ATLAS-746 : After updating a set of entities, response contains only the first 
entity definition


Project: http://git-wip-us.apache.org/repos/asf/incubator-atlas/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-atlas/commit/5f508c97
Tree: http://git-wip-us.apache.org/repos/asf/incubator-atlas/tree/5f508c97
Diff: http://git-wip-us.apache.org/repos/asf/incubator-atlas/diff/5f508c97

Branch: refs/heads/master
Commit: 5f508c97c7ea9436e16dbacb6770f14d0114eca3
Parents: acfe9a4
Author: Jeff Hagelberg <[email protected]>
Authored: Tue Feb 7 15:31:02 2017 -0500
Committer: Jeff Hagelberg <[email protected]>
Committed: Tue Feb 7 15:31:02 2017 -0500

----------------------------------------------------------------------
 .../apache/atlas/catalog/DefaultTypeSystem.java |   3 +-
 .../java/org/apache/atlas/AtlasBaseClient.java  |  65 ++++--
 .../main/java/org/apache/atlas/AtlasClient.java |   3 +-
 .../org/apache/atlas/AtlasEntitiesClientV2.java |  67 ++++--
 .../atlas/CreateUpdateEntitiesResult.java       | 122 ++++++++++
 .../model/instance/EntityMutationResponse.java  |  37 +--
 .../atlas/model/instance/GuidMapping.java       |  84 +++++++
 release-log.txt                                 |   1 +
 .../atlas/repository/MetadataRepository.java    |   9 +-
 .../graph/GraphBackedMetadataRepository.java    |  28 ++-
 .../graph/TypedInstanceToGraphMapper.java       |  15 +-
 .../store/graph/v1/AtlasStructDefStoreV1.java   |   8 +-
 .../graph/v1/AtlasTypeDefGraphStoreV1.java      |   7 +-
 .../atlas/services/DefaultMetadataService.java  |  51 ++--
 .../org/apache/atlas/BaseRepositoryTest.java    |   2 +-
 .../test/java/org/apache/atlas/TestUtils.java   | 222 ++++++++++++++----
 .../GraphBackedDiscoveryServiceTest.java        |  71 ++++--
 ...hBackedMetadataRepositoryDeleteTestBase.java |  24 +-
 .../GraphBackedMetadataRepositoryTest.java      | 232 ++++++++++++++++---
 .../atlas/repository/graph/GraphHelperTest.java |   6 +-
 .../graph/GraphRepoMapperScaleTest.java         |  12 +-
 .../typestore/GraphBackedTypeStoreTest.java     |   3 +-
 .../service/DefaultMetadataServiceTest.java     |   4 +-
 .../apache/atlas/services/MetadataService.java  |  27 +--
 .../atlas/typesystem/types/TypeSystem.java      |   2 +-
 .../org/apache/atlas/examples/QuickStartV2.java |   5 +-
 .../java/org/apache/atlas/util/RestUtils.java   |  32 +--
 .../web/adapters/AtlasInstanceRestAdapters.java |  23 +-
 .../atlas/web/resources/EntityResource.java     |  58 +++--
 .../org/apache/atlas/web/rest/EntitiesREST.java |   3 +-
 .../org/apache/atlas/web/rest/EntityREST.java   |   3 +-
 .../apache/atlas/examples/QuickStartV2IT.java   |  11 +-
 .../org/apache/atlas/util/RestUtilsTest.java    | 212 +++++++++++++++++
 .../atlas/web/resources/BaseResourceIT.java     | 116 ++++++++--
 .../web/resources/EntityJerseyResourceIT.java   | 101 ++++++--
 .../web/resources/EntityV2JerseyResourceIT.java | 115 +++++++--
 36 files changed, 1448 insertions(+), 336 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/catalog/src/main/java/org/apache/atlas/catalog/DefaultTypeSystem.java
----------------------------------------------------------------------
diff --git 
a/catalog/src/main/java/org/apache/atlas/catalog/DefaultTypeSystem.java 
b/catalog/src/main/java/org/apache/atlas/catalog/DefaultTypeSystem.java
index 726351a..ea967f9 100644
--- a/catalog/src/main/java/org/apache/atlas/catalog/DefaultTypeSystem.java
+++ b/catalog/src/main/java/org/apache/atlas/catalog/DefaultTypeSystem.java
@@ -105,7 +105,8 @@ public class DefaultTypeSystem implements AtlasTypeSystem {
             entity.set(TaxonomyResourceProvider.NAMESPACE_ATTRIBUTE_NAME, 
TaxonomyResourceProvider.TAXONOMY_NS);
 
             ITypedReferenceableInstance typedInstance = 
metadataService.getTypedReferenceableInstance(entity);
-            final List<String> entities = 
metadataService.createEntities(Collections.singletonList(typedInstance).toArray(new
 ITypedReferenceableInstance[1]));
+            ITypedReferenceableInstance[] entitiesToCreate = 
Collections.singletonList(typedInstance).toArray(new 
ITypedReferenceableInstance[1]);
+            final List<String> entities = 
metadataService.createEntities(entitiesToCreate).getCreatedEntities();
             return entities != null && entities.size() > 0 ? entities.get(0) : 
null;
         } catch (EntityExistsException e) {
             throw new ResourceAlreadyExistsException(

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/client/src/main/java/org/apache/atlas/AtlasBaseClient.java
----------------------------------------------------------------------
diff --git a/client/src/main/java/org/apache/atlas/AtlasBaseClient.java 
b/client/src/main/java/org/apache/atlas/AtlasBaseClient.java
index 9b69991..cec5a11 100644
--- a/client/src/main/java/org/apache/atlas/AtlasBaseClient.java
+++ b/client/src/main/java/org/apache/atlas/AtlasBaseClient.java
@@ -17,15 +17,19 @@
  */
 package org.apache.atlas;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.sun.jersey.api.client.Client;
-import com.sun.jersey.api.client.ClientHandlerException;
-import com.sun.jersey.api.client.ClientResponse;
-import com.sun.jersey.api.client.WebResource;
-import com.sun.jersey.api.client.config.DefaultClientConfig;
-import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;
-import com.sun.jersey.api.json.JSONConfiguration;
-import com.sun.jersey.client.urlconnection.URLConnectionClientHandler;
+import static org.apache.atlas.security.SecurityProperties.TLS_ENABLED;
+
+import java.io.IOException;
+import java.net.ConnectException;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.HttpMethod;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+
 import org.apache.atlas.model.metrics.AtlasMetrics;
 import org.apache.atlas.security.SecureClientUtils;
 import org.apache.atlas.type.AtlasType;
@@ -38,17 +42,16 @@ import org.codehaus.jettison.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.ws.rs.HttpMethod;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.MultivaluedMap;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.UriBuilder;
-import java.io.IOException;
-import java.net.ConnectException;
-import java.util.List;
-import java.util.Map;
-
-import static org.apache.atlas.security.SecurityProperties.TLS_ENABLED;
+import com.google.common.annotations.VisibleForTesting;
+import com.sun.jersey.api.client.Client;
+import com.sun.jersey.api.client.ClientHandlerException;
+import com.sun.jersey.api.client.ClientResponse;
+import com.sun.jersey.api.client.GenericType;
+import com.sun.jersey.api.client.WebResource;
+import com.sun.jersey.api.client.config.DefaultClientConfig;
+import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;
+import com.sun.jersey.api.json.JSONConfiguration;
+import com.sun.jersey.client.urlconnection.URLConnectionClientHandler;
 
 public abstract class AtlasBaseClient {
     public static final String BASE_URI = "api/atlas/";
@@ -277,6 +280,14 @@ public abstract class AtlasBaseClient {
     }
 
     protected <T> T callAPIWithResource(APIInfo api, WebResource resource, 
Object requestObject, Class<T> responseType) throws AtlasServiceException {
+        GenericType<T> genericType = null;
+        if(responseType != null) {
+            genericType = new GenericType<>(responseType);
+        }
+        return callAPIWithResource(api, resource, requestObject, genericType);
+    }
+
+    protected <T> T callAPIWithResource(APIInfo api, WebResource resource, 
Object requestObject, GenericType<T> responseType) throws AtlasServiceException 
{
         ClientResponse clientResponse = null;
         int i = 0;
         do {
@@ -297,7 +308,7 @@ public abstract class AtlasBaseClient {
                     return null;
                 }
                 try {
-                    if (responseType == JSONObject.class) {
+                    if (responseType.getRawClass() == JSONObject.class) {
                         String stringEntity = 
clientResponse.getEntity(String.class);
                         try {
                             JSONObject jsonObject = new 
JSONObject(stringEntity);
@@ -419,6 +430,12 @@ public abstract class AtlasBaseClient {
         return callAPIWithResource(api, getResource(api, params), 
requestObject, responseType);
     }
 
+    public <T> T callAPI(APIInfo api, Object requestObject, GenericType<T> 
responseType, String... params)
+            throws AtlasServiceException {
+        return callAPIWithResource(api, getResource(api, params), 
requestObject, responseType);
+    }
+
+
     public <T> T callAPI(APIInfo api, Object requestBody, Class<T> 
responseType,
                          MultivaluedMap<String, String> queryParams, String... 
params) throws AtlasServiceException {
         WebResource resource = getResource(api, queryParams, params);
@@ -431,6 +448,12 @@ public abstract class AtlasBaseClient {
         return callAPIWithResource(api, resource, null, responseType);
     }
 
+    public <T> T callAPI(APIInfo api, GenericType<T> responseType, 
MultivaluedMap<String, String> queryParams, String... params)
+            throws AtlasServiceException {
+        WebResource resource = getResource(api, queryParams, params);
+        return callAPIWithResource(api, resource, null, responseType);
+    }
+
     protected WebResource getResource(APIInfo api, String... pathParams) {
         return getResource(service, api, pathParams);
     }

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/client/src/main/java/org/apache/atlas/AtlasClient.java
----------------------------------------------------------------------
diff --git a/client/src/main/java/org/apache/atlas/AtlasClient.java 
b/client/src/main/java/org/apache/atlas/AtlasClient.java
index 154644d..1955f2a 100755
--- a/client/src/main/java/org/apache/atlas/AtlasClient.java
+++ b/client/src/main/java/org/apache/atlas/AtlasClient.java
@@ -61,6 +61,7 @@ public class AtlasClient extends AtlasBaseClient {
     public static final String TYPENAME = "typeName";
     public static final String GUID = "GUID";
     public static final String ENTITIES = "entities";
+    public static final String GUID_ASSIGNMENTS = "guidAssignments";
 
     public static final String DEFINITION = "definition";
     public static final String ERROR = "error";
@@ -616,7 +617,7 @@ public class AtlasClient extends AtlasBaseClient {
 
     /**
      * Delete the specified entities from the repository
-     * 
+     *
      * @param guids guids of entities to delete
      * @return List of entity ids updated/deleted
      * @throws AtlasServiceException

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/client/src/main/java/org/apache/atlas/AtlasEntitiesClientV2.java
----------------------------------------------------------------------
diff --git a/client/src/main/java/org/apache/atlas/AtlasEntitiesClientV2.java 
b/client/src/main/java/org/apache/atlas/AtlasEntitiesClientV2.java
index 2b3669d..2d6e708 100644
--- a/client/src/main/java/org/apache/atlas/AtlasEntitiesClientV2.java
+++ b/client/src/main/java/org/apache/atlas/AtlasEntitiesClientV2.java
@@ -17,29 +17,32 @@
  */
 package org.apache.atlas;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.sun.jersey.api.client.WebResource;
-import com.sun.jersey.core.util.MultivaluedMapImpl;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.HttpMethod;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.core.Response;
+
 import org.apache.atlas.model.SearchFilter;
 import org.apache.atlas.model.instance.AtlasClassification;
 import 
org.apache.atlas.model.instance.AtlasClassification.AtlasClassifications;
 import org.apache.atlas.model.instance.AtlasEntity;
+import org.apache.atlas.model.instance.AtlasEntity.AtlasEntities;
 import org.apache.atlas.model.instance.AtlasEntityWithAssociations;
 import org.apache.atlas.model.instance.EntityMutationResponse;
 import org.apache.commons.configuration.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 
-import javax.ws.rs.HttpMethod;
-import javax.ws.rs.core.MultivaluedMap;
-import javax.ws.rs.core.Response;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import static org.apache.atlas.model.instance.AtlasEntity.AtlasEntities;
+import com.google.common.annotations.VisibleForTesting;
+import com.sun.jersey.api.client.GenericType;
+import com.sun.jersey.api.client.WebResource;
+import com.sun.jersey.core.util.MultivaluedMapImpl;
 
 public class AtlasEntitiesClientV2 extends AtlasBaseClient {
 
+    private static final GenericType<List<AtlasEntityWithAssociations>> 
ENTITY_WITH_ASSOCIATIONS_LIST_TYPE = new 
GenericType<List<AtlasEntityWithAssociations>>(){};
     public static final String ENTITY_API = BASE_URI + "v2/entity/";
     public static final String ENTITIES_API = BASE_URI + "v2/entities/";
 
@@ -84,22 +87,25 @@ public class AtlasEntitiesClientV2 extends AtlasBaseClient {
         super(service, configuration);
     }
 
-    public AtlasEntity getEntityByGuid(String guid) throws 
AtlasServiceException {
-        return callAPI(GET_ENTITY_BY_GUID, null, AtlasEntity.class, guid);
+    public List<AtlasEntityWithAssociations> getEntityByGuid(String guid) 
throws AtlasServiceException {
+
+        return callAPI(GET_ENTITY_BY_GUID, null, 
ENTITY_WITH_ASSOCIATIONS_LIST_TYPE, guid);
     }
 
     public AtlasEntities getEntityByGuids(List<String> guids) throws 
AtlasServiceException {
         return callAPI(GET_ENTITY_BY_GUID, AtlasEntities.class, "guid", guids);
     }
 
-    public AtlasEntityWithAssociations getEntityWithAssociationByGuid(String 
guid) throws AtlasServiceException {
-        return 
callAPI(formatPathForPathParams(GET_ENTITY_WITH_ASSOCIATION_BY_GUID, guid), 
null, AtlasEntityWithAssociations.class);
+    public List<AtlasEntityWithAssociations> 
getEntityWithAssociationByGuid(String guid) throws AtlasServiceException {
+
+        return 
callAPI(formatPathForPathParams(GET_ENTITY_WITH_ASSOCIATION_BY_GUID, guid), 
null, ENTITY_WITH_ASSOCIATIONS_LIST_TYPE);
     }
 
-    public AtlasEntity getEntityByAttribute(String type, String attribute, 
String value) throws AtlasServiceException {
+    public List<AtlasEntityWithAssociations> getEntityByAttribute(String type, 
String attribute, String value) throws AtlasServiceException {
+
         MultivaluedMap<String, String> queryParams = new MultivaluedMapImpl();
         queryParams.add("value", value);
-        return callAPI(formatPathForPathParams(GET_ENTITY_BY_ATTRIBUTE, type, 
attribute), AtlasEntity.class, queryParams);
+        return callAPI(formatPathForPathParams(GET_ENTITY_BY_ATTRIBUTE, type, 
attribute), ENTITY_WITH_ASSOCIATIONS_LIST_TYPE, queryParams);
     }
 
     public EntityMutationResponse updateEntityByAttribute(String type, String 
attribute, String value, AtlasEntity entity) throws AtlasServiceException {
@@ -115,11 +121,11 @@ public class AtlasEntitiesClientV2 extends 
AtlasBaseClient {
     }
 
     public EntityMutationResponse createEntity(final AtlasEntity atlasEntity) 
throws AtlasServiceException {
-        return callAPI(CREATE_ENTITY, new HashMap<String, AtlasEntity>() {{ 
put(atlasEntity.getGuid(), atlasEntity); }}, EntityMutationResponse.class);
+        return callAPI(CREATE_ENTITY, new HashMap<String, AtlasEntity>(1) {{ 
put(atlasEntity.getGuid(), atlasEntity); }}, EntityMutationResponse.class);
     }
 
     public EntityMutationResponse updateEntity(final AtlasEntity atlasEntity) 
throws AtlasServiceException {
-        return callAPI(UPDATE_ENTITY, new HashMap<String, AtlasEntity>() {{ 
put(atlasEntity.getGuid(), atlasEntity); }}, EntityMutationResponse.class);
+        return callAPI(UPDATE_ENTITY, new HashMap<String, AtlasEntity>(1) {{ 
put(atlasEntity.getGuid(), atlasEntity); }}, EntityMutationResponse.class);
     }
 
     public AtlasEntity deleteEntityByGuid(String guid) throws 
AtlasServiceException {
@@ -135,7 +141,7 @@ public class AtlasEntitiesClientV2 extends AtlasBaseClient {
     }
 
     public void addClassifications(String guid, List<AtlasClassification> 
classifications) throws AtlasServiceException {
-        callAPI(formatPathForPathParams(ADD_CLASSIFICATIONS, guid), 
classifications, null, (String[]) null);
+        callAPI(formatPathForPathParams(ADD_CLASSIFICATIONS, guid), 
classifications, (Class<?>)null, (String[]) null);
     }
 
     public void updateClassifications(String guid, List<AtlasClassification> 
classifications) throws AtlasServiceException {
@@ -156,11 +162,24 @@ public class AtlasEntitiesClientV2 extends 
AtlasBaseClient {
         return null;
     }
 
-    public List<AtlasEntity> createEntities(Map<String, AtlasEntity> 
atlasEntities) throws AtlasServiceException {
-        return (List<AtlasEntity>)callAPI(CREATE_ENTITIES, atlasEntities, 
List.class);
+    public EntityMutationResponse createEntities(List<AtlasEntity> 
atlasEntities) throws AtlasServiceException {
+
+        return callAPI(CREATE_ENTITIES, entityListToMap(atlasEntities), 
EntityMutationResponse.class);
+    }
+
+    private Map<String, AtlasEntity> entityListToMap(List<AtlasEntity> 
atlasEntities) {
+        Map<String,AtlasEntity> toSend = new HashMap<String, 
AtlasEntity>(atlasEntities.size());
+        for(AtlasEntity entity : atlasEntities) {
+            toSend.put(entity.getGuid(), entity);
+        }
+        return toSend;
+    }
+
+    public EntityMutationResponse updateEntities(List<AtlasEntity> 
atlasEntities) throws AtlasServiceException {
+        return callAPI(UPDATE_ENTITIES, entityListToMap(atlasEntities), 
EntityMutationResponse.class);
     }
 
-    public List<AtlasEntity> updateEntities(Map<String, AtlasEntity> 
atlasEntities) throws AtlasServiceException {
-        return (List<AtlasEntity>)callAPI(UPDATE_ENTITIES, atlasEntities, 
List.class);
+    public AtlasEntity.AtlasEntities searchEntities(SearchFilter searchFilter) 
throws AtlasServiceException {
+        return callAPI(GET_ENTITIES, AtlasEntity.AtlasEntities.class, 
searchFilter.getParams());
     }
 }

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/client/src/main/java/org/apache/atlas/CreateUpdateEntitiesResult.java
----------------------------------------------------------------------
diff --git 
a/client/src/main/java/org/apache/atlas/CreateUpdateEntitiesResult.java 
b/client/src/main/java/org/apache/atlas/CreateUpdateEntitiesResult.java
new file mode 100644
index 0000000..a1aef61
--- /dev/null
+++ b/client/src/main/java/org/apache/atlas/CreateUpdateEntitiesResult.java
@@ -0,0 +1,122 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.atlas;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.atlas.AtlasClient.EntityResult;
+import org.apache.atlas.model.instance.GuidMapping;
+
+/**
+ * Result from creating or updating entities.
+ */
+public class CreateUpdateEntitiesResult {
+
+    /**
+     * Guid mapping for the entities that were created/updated
+     */
+    private GuidMapping guidMapping;
+
+    /**
+     * Entity result
+     */
+    private EntityResult entityResult;
+
+    /**
+     * Gets the guid mapping
+     */
+    public GuidMapping getGuidMapping() {
+        return guidMapping;
+    }
+
+    /**
+     * Sets the guid mapping
+     */
+    public void setGuidMapping(GuidMapping guidMapping) {
+        this.guidMapping = guidMapping;
+    }
+
+    /**
+     * Gets the entity result
+     */
+    public EntityResult getEntityResult() {
+        return entityResult;
+    }
+
+    /**
+     * Sets the entity result
+     */
+    public void setEntityResult(EntityResult entityResult) {
+        this.entityResult = entityResult;
+    }
+
+    /**
+     * Deserializes the given json into an instance of
+     * CreateUpdateEntitiesResult.
+     *
+     * @param json
+     *            the (unmodified) json that comes back from Atlas.
+     * @return
+     * @throws AtlasServiceException
+     */
+    public static CreateUpdateEntitiesResult fromJson(String json) throws 
AtlasServiceException {
+
+        GuidMapping guidMapping = GuidMapping.fromString(json);
+        EntityResult entityResult = EntityResult.fromString(json);
+        CreateUpdateEntitiesResult result = new CreateUpdateEntitiesResult();
+        result.setEntityResult(entityResult);
+        result.setGuidMapping(guidMapping);
+        return result;
+    }
+
+    /**
+     * Convenience method to get the guids of the created entities from
+     * the EntityResult.
+     */
+    public List<String> getCreatedEntities() {
+        if(entityResult == null) {
+            return Collections.emptyList();
+        }
+        return getEntityResult().getCreatedEntities();
+    }
+
+    /**
+     * Convenience method to get the guids of the updated entities from
+     * the EntityResult.
+     */
+    public List<String> getUpdatedEntities() {
+        if(entityResult == null) {
+            return Collections.emptyList();
+        }
+        return getEntityResult().getUpdateEntities();
+    }
+
+
+    /**
+     * Convenience method to get the guids of the deleted entities
+     * from the EntityResult.
+     */
+    public List<String> getDeletedEntities() {
+        if (entityResult == null) {
+            return Collections.emptyList();
+        }
+        return getEntityResult().getDeletedEntities();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/intg/src/main/java/org/apache/atlas/model/instance/EntityMutationResponse.java
----------------------------------------------------------------------
diff --git 
a/intg/src/main/java/org/apache/atlas/model/instance/EntityMutationResponse.java
 
b/intg/src/main/java/org/apache/atlas/model/instance/EntityMutationResponse.java
index 874a43a..2f2d44f 100644
--- 
a/intg/src/main/java/org/apache/atlas/model/instance/EntityMutationResponse.java
+++ 
b/intg/src/main/java/org/apache/atlas/model/instance/EntityMutationResponse.java
@@ -18,25 +18,24 @@
 package org.apache.atlas.model.instance;
 
 
-import org.apache.atlas.model.typedef.AtlasBaseTypeDef;
-import org.apache.commons.collections.CollectionUtils;
-import org.apache.commons.collections.MapUtils;
-import org.codehaus.jackson.annotate.JsonAutoDetect;
-import org.codehaus.jackson.annotate.JsonIgnore;
-import org.codehaus.jackson.annotate.JsonIgnoreProperties;
-import org.codehaus.jackson.map.annotate.JsonSerialize;
+import static org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.NONE;
+import static 
org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.PUBLIC_ONLY;
 
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlRootElement;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 
-import static org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.NONE;
-import static 
org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.PUBLIC_ONLY;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+
+import org.apache.atlas.model.typedef.AtlasBaseTypeDef;
+import org.codehaus.jackson.annotate.JsonAutoDetect;
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
 
 @JsonAutoDetect(getterVisibility=PUBLIC_ONLY, setterVisibility=PUBLIC_ONLY, 
fieldVisibility=NONE)
 @JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
@@ -46,6 +45,7 @@ import static 
org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.PUBLIC_ONL
 public class EntityMutationResponse {
 
     Map<EntityMutations.EntityOperation, List<AtlasEntityHeader>> 
entitiesMutated;
+    Map<String,String> guidAssignments;
 
     public EntityMutationResponse() {
     }
@@ -148,16 +148,25 @@ public class EntityMutationResponse {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         EntityMutationResponse that = (EntityMutationResponse) o;
-        return Objects.equals(entitiesMutated, that.entitiesMutated);
+        return Objects.equals(entitiesMutated, that.entitiesMutated) &&
+               Objects.equals(guidAssignments, that.guidAssignments);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(entitiesMutated);
+        return Objects.hash(entitiesMutated, guidAssignments);
     }
 
     @Override
     public String toString() {
         return toString(new StringBuilder()).toString();
     }
+
+    public void setGuidAssignments(Map<String,String> guidAssignments) {
+        this.guidAssignments = guidAssignments;
+    }
+
+    public Map<String,String> getGuidAssignments() {
+        return guidAssignments;
+    }
 }

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/intg/src/main/java/org/apache/atlas/model/instance/GuidMapping.java
----------------------------------------------------------------------
diff --git 
a/intg/src/main/java/org/apache/atlas/model/instance/GuidMapping.java 
b/intg/src/main/java/org/apache/atlas/model/instance/GuidMapping.java
new file mode 100644
index 0000000..43ce3b0
--- /dev/null
+++ b/intg/src/main/java/org/apache/atlas/model/instance/GuidMapping.java
@@ -0,0 +1,84 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.atlas.model.instance;
+
+import static org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.NONE;
+import static 
org.codehaus.jackson.annotate.JsonAutoDetect.Visibility.PUBLIC_ONLY;
+
+import java.util.Map;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+
+import org.codehaus.jackson.annotate.JsonAutoDetect;
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+/**
+ * This stores a mapping of guid assignments that were made during the 
processing
+ * of a create or update entity request.
+ *.
+ */
+@JsonAutoDetect(getterVisibility=PUBLIC_ONLY, setterVisibility=PUBLIC_ONLY, 
fieldVisibility=NONE)
+@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
+@JsonIgnoreProperties(ignoreUnknown=true)
+@XmlRootElement
+@XmlAccessorType(XmlAccessType.PROPERTY)
+public class GuidMapping {
+
+    @JsonIgnore
+    private static final Gson gson = new 
GsonBuilder().setPrettyPrinting().create();
+
+    private Map<String,String> guidAssignments;
+
+
+    public GuidMapping() {
+
+    }
+
+    public GuidMapping(Map<String,String> guidAssignments) {
+        this.guidAssignments = guidAssignments;
+    }
+
+
+    public Map<String,String> getGuidAssignments() {
+        return guidAssignments;
+    }
+
+    public void setGuidAssignments(Map<String,String> guidAssignments) {
+        this.guidAssignments = guidAssignments;
+    }
+    /**
+     * Converts the GuidMapping to json
+     */
+    @Override
+    public String toString() {
+        return gson.toJson(this);
+    }
+
+    @JsonIgnore
+    public static GuidMapping fromString(String json) {
+        return gson.fromJson(json, GuidMapping.class);
+    }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/release-log.txt
----------------------------------------------------------------------
diff --git a/release-log.txt b/release-log.txt
index e6272fb..5a12669 100644
--- a/release-log.txt
+++ b/release-log.txt
@@ -9,6 +9,7 @@ ATLAS-1060 Add composite indexes for exact match performance 
improvements for al
 ATLAS-1127 Modify creation and modification timestamps to Date instead of 
Long(sumasai)
 
 ALL CHANGES:
+ATLAS-746  After updating a set of entities, response contains only the first 
entity definition (jnhagelb)
 ATLAS-1510 Consolidate/batch calls to GraphBackedTypeStore.findVertex() 
(jnhagelb)
 ATLAS-1388 Cache entities that are created/updated (jnhagelb)
 ATLAS-1369 Optimize Gremlin queries generated by DSL translator (jnhagelb)

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/repository/MetadataRepository.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/repository/MetadataRepository.java 
b/repository/src/main/java/org/apache/atlas/repository/MetadataRepository.java
index 1d61ea8..3f31f25 100755
--- 
a/repository/src/main/java/org/apache/atlas/repository/MetadataRepository.java
+++ 
b/repository/src/main/java/org/apache/atlas/repository/MetadataRepository.java
@@ -20,6 +20,7 @@ package org.apache.atlas.repository;
 
 import org.apache.atlas.AtlasClient;
 import org.apache.atlas.AtlasException;
+import org.apache.atlas.CreateUpdateEntitiesResult;
 import org.apache.atlas.typesystem.ITypedReferenceableInstance;
 import org.apache.atlas.typesystem.ITypedStruct;
 import org.apache.atlas.typesystem.exception.EntityExistsException;
@@ -91,11 +92,11 @@ public interface MetadataRepository {
      * Creates an entity definition (instance) corresponding to a given type.
      *
      * @param entities     entity (typed instance)
-     * @return a globally unique identifier
+     * @return CreateOrUpdateEntitiesResult with the guids of the entities 
that were created
      * @throws RepositoryException
      * @throws EntityExistsException
      */
-    List<String> createEntities(ITypedReferenceableInstance... entities) 
throws RepositoryException, EntityExistsException;
+    CreateUpdateEntitiesResult createEntities(ITypedReferenceableInstance... 
entities) throws RepositoryException, EntityExistsException;
 
     /**
      * Fetch the complete definition of an entity given its GUID.
@@ -166,13 +167,13 @@ public interface MetadataRepository {
      * Adds/Updates the property to the entity that corresponds to the GUID
      * Supports only primitive attribute/Class Id updations.
      */
-    AtlasClient.EntityResult updatePartial(ITypedReferenceableInstance entity) 
throws RepositoryException;
+    CreateUpdateEntitiesResult updatePartial(ITypedReferenceableInstance 
entity) throws RepositoryException;
 
     /**
      * Adds the property to the entity that corresponds to the GUID
      * @param entitiesToBeUpdated The entities to be updated
      */
-    AtlasClient.EntityResult updateEntities(ITypedReferenceableInstance... 
entitiesToBeUpdated) throws RepositoryException;
+    CreateUpdateEntitiesResult updateEntities(ITypedReferenceableInstance... 
entitiesToBeUpdated) throws RepositoryException;
 
     /**
      * Returns the entity for the given type and qualified name

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java
 
b/repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java
index 27bf6d7..943edef 100755
--- 
a/repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java
+++ 
b/repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java
@@ -27,8 +27,10 @@ import java.util.Map;
 
 import org.apache.atlas.AtlasClient;
 import org.apache.atlas.AtlasException;
+import org.apache.atlas.CreateUpdateEntitiesResult;
 import org.apache.atlas.GraphTransaction;
 import org.apache.atlas.RequestContext;
+import org.apache.atlas.model.instance.GuidMapping;
 import org.apache.atlas.repository.Constants;
 import org.apache.atlas.repository.MetadataRepository;
 import org.apache.atlas.repository.RepositoryException;
@@ -143,7 +145,7 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
 
     @Override
     @GraphTransaction
-    public List<String> createEntities(ITypedReferenceableInstance... 
entities) throws RepositoryException,
+    public CreateUpdateEntitiesResult 
createEntities(ITypedReferenceableInstance... entities) throws 
RepositoryException,
         EntityExistsException {
         if (LOG.isDebugEnabled()) {
             LOG.debug("adding entities={}", entities);
@@ -152,7 +154,13 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
         try {
             TypedInstanceToGraphMapper instanceToGraphMapper = new 
TypedInstanceToGraphMapper(graphToInstanceMapper, deleteHandler);
             
instanceToGraphMapper.mapTypedInstanceToGraph(TypedInstanceToGraphMapper.Operation.CREATE,
 entities);
-            return RequestContext.get().getCreatedEntityIds();
+            List<String> createdGuids = 
RequestContext.get().getCreatedEntityIds();
+            CreateUpdateEntitiesResult result = new 
CreateUpdateEntitiesResult();
+            AtlasClient.EntityResult entityResult = new 
AtlasClient.EntityResult(createdGuids, null,  null);
+            GuidMapping mapping = instanceToGraphMapper.createGuidMapping();
+            result.setEntityResult(entityResult);
+            result.setGuidMapping(mapping);
+            return result;
         } catch (EntityExistsException e) {
             throw e;
         } catch (AtlasException e) {
@@ -360,7 +368,7 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
 
     @Override
     @GraphTransaction
-    public AtlasClient.EntityResult 
updateEntities(ITypedReferenceableInstance... entitiesUpdated) throws 
RepositoryException {
+    public CreateUpdateEntitiesResult 
updateEntities(ITypedReferenceableInstance... entitiesUpdated) throws 
RepositoryException {
         if (LOG.isDebugEnabled()) {
             LOG.debug("updating entity {}", entitiesUpdated);
         }
@@ -369,8 +377,12 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
             TypedInstanceToGraphMapper instanceToGraphMapper = new 
TypedInstanceToGraphMapper(graphToInstanceMapper, deleteHandler);
             
instanceToGraphMapper.mapTypedInstanceToGraph(TypedInstanceToGraphMapper.Operation.UPDATE_FULL,
                     entitiesUpdated);
+            CreateUpdateEntitiesResult result = new 
CreateUpdateEntitiesResult();
             RequestContext requestContext = RequestContext.get();
-            return createEntityResultFromContext(requestContext);
+            
result.setEntityResult(createEntityResultFromContext(requestContext));
+            GuidMapping mapping = instanceToGraphMapper.createGuidMapping();
+            result.setGuidMapping(mapping);
+            return result;
         } catch (AtlasException e) {
             throw new RepositoryException(e);
         }
@@ -378,7 +390,7 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
 
     @Override
     @GraphTransaction
-    public AtlasClient.EntityResult updatePartial(ITypedReferenceableInstance 
entity) throws RepositoryException {
+    public CreateUpdateEntitiesResult 
updatePartial(ITypedReferenceableInstance entity) throws RepositoryException {
         if (LOG.isDebugEnabled()) {
             LOG.debug("updating entity {}", entity);
         }
@@ -387,7 +399,11 @@ public class GraphBackedMetadataRepository implements 
MetadataRepository {
             TypedInstanceToGraphMapper instanceToGraphMapper = new 
TypedInstanceToGraphMapper(graphToInstanceMapper, deleteHandler);
             
instanceToGraphMapper.mapTypedInstanceToGraph(TypedInstanceToGraphMapper.Operation.UPDATE_PARTIAL,
 entity);
             RequestContext requestContext = RequestContext.get();
-            return createEntityResultFromContext(requestContext);
+            CreateUpdateEntitiesResult result = new 
CreateUpdateEntitiesResult();
+            GuidMapping mapping = instanceToGraphMapper.createGuidMapping();
+            
result.setEntityResult(createEntityResultFromContext(requestContext));
+            result.setGuidMapping(mapping);
+            return result;
         } catch (AtlasException e) {
             throw new RepositoryException(e);
         }

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/repository/graph/TypedInstanceToGraphMapper.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/repository/graph/TypedInstanceToGraphMapper.java
 
b/repository/src/main/java/org/apache/atlas/repository/graph/TypedInstanceToGraphMapper.java
index 1a88251..d9c7feb 100644
--- 
a/repository/src/main/java/org/apache/atlas/repository/graph/TypedInstanceToGraphMapper.java
+++ 
b/repository/src/main/java/org/apache/atlas/repository/graph/TypedInstanceToGraphMapper.java
@@ -32,6 +32,7 @@ import java.util.Set;
 
 import org.apache.atlas.AtlasException;
 import org.apache.atlas.RequestContext;
+import org.apache.atlas.model.instance.GuidMapping;
 import org.apache.atlas.repository.Constants;
 import org.apache.atlas.repository.RepositoryException;
 import org.apache.atlas.repository.graphdb.AtlasEdge;
@@ -847,4 +848,16 @@ public final class TypedInstanceToGraphMapper {
             context.cache(instance);
         }
     }
-}
+
+    public GuidMapping createGuidMapping() {
+        Map<String,String> mapping = new HashMap<>(idToVertexMap.size());
+        for(Map.Entry<Id, AtlasVertex> entry : idToVertexMap.entrySet()) {
+            Id id = entry.getKey();
+            if (id.isUnassigned()) {
+                AtlasVertex classVertex = entry.getValue();
+                mapping.put(id._getId(), GraphHelper.getGuid(classVertex));
+            }
+        }
+        return new GuidMapping(mapping);
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasStructDefStoreV1.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasStructDefStoreV1.java
 
b/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasStructDefStoreV1.java
index d48c87e..69cf60a 100644
--- 
a/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasStructDefStoreV1.java
+++ 
b/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasStructDefStoreV1.java
@@ -43,6 +43,8 @@ import org.codehaus.jettison.json.JSONException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.google.common.annotations.VisibleForTesting;
+
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -498,7 +500,8 @@ public class AtlasStructDefStoreV1 extends 
AtlasAbstractDefStoreV1 implements At
         }
     }
 
-    private static String toJsonFromAttribute(AtlasAttribute attribute) {
+    @VisibleForTesting
+    public static String toJsonFromAttribute(AtlasAttribute attribute) {
         AtlasAttributeDef attributeDef      = attribute.getAttributeDef();
         boolean           isComposite       = attribute.legacyIsComposite();
         String            reverseAttribName = 
attribute.legacyReverseAttribute();
@@ -539,7 +542,8 @@ public class AtlasStructDefStoreV1 extends 
AtlasAbstractDefStoreV1 implements At
         return AtlasType.toJson(attribInfo);
     }
 
-    private static AtlasAttributeDef toAttributeDefFromJson(AtlasStructDef     
      structDef,
+    @VisibleForTesting
+    public static AtlasAttributeDef toAttributeDefFromJson(AtlasStructDef      
     structDef,
                                                             Map                
      attribInfo,
                                                             
AtlasTypeDefGraphStoreV1 typeDefStore)
         throws AtlasBaseException {

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasTypeDefGraphStoreV1.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasTypeDefGraphStoreV1.java
 
b/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasTypeDefGraphStoreV1.java
index 88197ac..b76dfef 100644
--- 
a/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasTypeDefGraphStoreV1.java
+++ 
b/repository/src/main/java/org/apache/atlas/repository/store/graph/v1/AtlasTypeDefGraphStoreV1.java
@@ -17,6 +17,7 @@
  */
 package org.apache.atlas.repository.store.graph.v1;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
 import com.google.inject.Inject;
 
@@ -110,7 +111,8 @@ public class AtlasTypeDefGraphStoreV1 extends 
AtlasTypeDefGraphStore {
 
     AtlasGraph getAtlasGraph() { return atlasGraph; }
 
-    AtlasVertex findTypeVertexByName(String typeName) {
+    @VisibleForTesting
+    public AtlasVertex findTypeVertexByName(String typeName) {
         Iterator results = atlasGraph.query().has(VERTEX_TYPE_PROPERTY_KEY, 
VERTEX_TYPE)
                                              
.has(Constants.TYPENAME_PROPERTY_KEY, typeName)
                                              .vertices().iterator();
@@ -276,7 +278,8 @@ public class AtlasTypeDefGraphStoreV1 extends 
AtlasTypeDefGraphStore {
         return VERTEX_TYPE.equals(vertexType);
     }
 
-    boolean isTypeVertex(AtlasVertex vertex, TypeCategory category) {
+    @VisibleForTesting
+    public boolean isTypeVertex(AtlasVertex vertex, TypeCategory category) {
         boolean ret = false;
 
         if (isTypeVertex(vertex)) {

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/main/java/org/apache/atlas/services/DefaultMetadataService.java
----------------------------------------------------------------------
diff --git 
a/repository/src/main/java/org/apache/atlas/services/DefaultMetadataService.java
 
b/repository/src/main/java/org/apache/atlas/services/DefaultMetadataService.java
index b14531f..c6cd93c 100755
--- 
a/repository/src/main/java/org/apache/atlas/services/DefaultMetadataService.java
+++ 
b/repository/src/main/java/org/apache/atlas/services/DefaultMetadataService.java
@@ -26,6 +26,7 @@ import org.apache.atlas.ApplicationProperties;
 import org.apache.atlas.AtlasClient;
 import org.apache.atlas.AtlasErrorCode;
 import org.apache.atlas.AtlasException;
+import org.apache.atlas.CreateUpdateEntitiesResult;
 import org.apache.atlas.EntityAuditEvent;
 import org.apache.atlas.RequestContext;
 import org.apache.atlas.exception.AtlasBaseException;
@@ -293,7 +294,7 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
      * @return guids - list of guids
      */
     @Override
-    public List<String> createEntities(String entityInstanceDefinition) throws 
AtlasException {
+    public CreateUpdateEntitiesResult createEntities(String 
entityInstanceDefinition) throws AtlasException {
         entityInstanceDefinition = 
ParamChecker.notEmpty(entityInstanceDefinition, "Entity instance definition");
 
         ITypedReferenceableInstance[] typedInstances = 
deserializeClassInstances(entityInstanceDefinition);
@@ -301,10 +302,10 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
         return createEntities(typedInstances);
     }
 
-    public List<String> createEntities(ITypedReferenceableInstance[] 
typedInstances) throws AtlasException {
-        final List<String> guids = repository.createEntities(typedInstances);
-        onEntitiesAdded(guids);
-        return guids;
+    public CreateUpdateEntitiesResult 
createEntities(ITypedReferenceableInstance[] typedInstances) throws 
AtlasException {
+        final CreateUpdateEntitiesResult result = 
repository.createEntities(typedInstances);
+        onEntitiesAdded(result.getCreatedEntities());
+        return result;
     }
 
     private ITypedReferenceableInstance[] deserializeClassInstances(String 
entityInstanceDefinition) throws AtlasException {
@@ -397,13 +398,13 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
      * @return guids - json array of guids
      */
     @Override
-    public AtlasClient.EntityResult updateEntities(String 
entityInstanceDefinition) throws AtlasException {
+    public CreateUpdateEntitiesResult updateEntities(String 
entityInstanceDefinition) throws AtlasException {
         entityInstanceDefinition = 
ParamChecker.notEmpty(entityInstanceDefinition, "Entity instance definition");
         ITypedReferenceableInstance[] typedInstances = 
deserializeClassInstances(entityInstanceDefinition);
 
-        AtlasClient.EntityResult entityResult = 
repository.updateEntities(typedInstances);
-        onEntitiesAddedUpdated(entityResult);
-        return entityResult;
+        CreateUpdateEntitiesResult result = 
repository.updateEntities(typedInstances);
+        onEntitiesAddedUpdated(result.getEntityResult());
+        return result;
     }
 
     /**
@@ -413,10 +414,10 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
      * @return guids - json array of guids
      */
     @Override
-    public AtlasClient.EntityResult 
updateEntities(ITypedReferenceableInstance[] entityInstanceDefinitions) throws 
AtlasException {
-        AtlasClient.EntityResult entityResult = 
repository.updateEntities(entityInstanceDefinitions);
-        onEntitiesAddedUpdated(entityResult);
-        return entityResult;
+    public CreateUpdateEntitiesResult 
updateEntities(ITypedReferenceableInstance[] entityInstanceDefinitions) throws 
AtlasException {
+        CreateUpdateEntitiesResult result = 
repository.updateEntities(entityInstanceDefinitions);
+        onEntitiesAddedUpdated(result.getEntityResult());
+        return result;
     }
 
     private void onEntitiesAddedUpdated(AtlasClient.EntityResult entityResult) 
throws AtlasException {
@@ -427,7 +428,7 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
     }
 
     @Override
-    public AtlasClient.EntityResult updateEntityAttributeByGuid(String guid, 
String attributeName,
+    public CreateUpdateEntitiesResult updateEntityAttributeByGuid(String guid, 
String attributeName,
                                                                 String value) 
throws AtlasException {
         guid          = ParamChecker.notEmpty(guid, "entity id");
         attributeName = ParamChecker.notEmpty(attributeName, "attribute name");
@@ -457,9 +458,9 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
         }
 
         ((ReferenceableInstance)newInstance).replaceWithNewId(new Id(guid, 0, 
newInstance.getTypeName()));
-        AtlasClient.EntityResult entityResult = 
repository.updatePartial(newInstance);
-        onEntitiesAddedUpdated(entityResult);
-        return entityResult;
+        CreateUpdateEntitiesResult result = 
repository.updatePartial(newInstance);
+        onEntitiesAddedUpdated(result.getEntityResult());
+        return result;
     }
 
     private ITypedReferenceableInstance validateEntityExists(String guid)
@@ -472,7 +473,7 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
     }
 
     @Override
-    public AtlasClient.EntityResult updateEntityPartialByGuid(String guid, 
Referenceable newEntity)
+    public CreateUpdateEntitiesResult updateEntityPartialByGuid(String guid, 
Referenceable newEntity)
             throws AtlasException {
         guid      = ParamChecker.notEmpty(guid, "guid cannot be null");
         newEntity = ParamChecker.notNull(newEntity, "updatedEntity cannot be 
null");
@@ -481,9 +482,9 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
         ITypedReferenceableInstance newInstance = 
convertToTypedInstance(newEntity, existInstance.getTypeName());
         ((ReferenceableInstance)newInstance).replaceWithNewId(new Id(guid, 0, 
newInstance.getTypeName()));
 
-        AtlasClient.EntityResult entityResult = 
repository.updatePartial(newInstance);
-        onEntitiesAddedUpdated(entityResult);
-        return entityResult;
+        CreateUpdateEntitiesResult result = 
repository.updatePartial(newInstance);
+        onEntitiesAddedUpdated(result.getEntityResult());
+        return result;
     }
 
     private ITypedReferenceableInstance convertToTypedInstance(Referenceable 
updatedEntity, String typeName)
@@ -530,7 +531,7 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
     }
 
     @Override
-    public AtlasClient.EntityResult updateEntityByUniqueAttribute(String 
typeName, String uniqueAttributeName,
+    public CreateUpdateEntitiesResult updateEntityByUniqueAttribute(String 
typeName, String uniqueAttributeName,
                                                                   String 
attrValue,
                                                                   
Referenceable updatedEntity) throws AtlasException {
         typeName            = ParamChecker.notEmpty(typeName, "typeName");
@@ -543,9 +544,9 @@ public class DefaultMetadataService implements 
MetadataService, ActiveStateChang
         final ITypedReferenceableInstance newInstance = 
convertToTypedInstance(updatedEntity, typeName);
         
((ReferenceableInstance)newInstance).replaceWithNewId(oldInstance.getId());
 
-        AtlasClient.EntityResult entityResult = 
repository.updatePartial(newInstance);
-        onEntitiesAddedUpdated(entityResult);
-        return entityResult;
+        CreateUpdateEntitiesResult result = 
repository.updatePartial(newInstance);
+        onEntitiesAddedUpdated(result.getEntityResult());
+        return result;
     }
 
     private void validateTypeExists(String entityType) throws AtlasException {

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/test/java/org/apache/atlas/BaseRepositoryTest.java
----------------------------------------------------------------------
diff --git a/repository/src/test/java/org/apache/atlas/BaseRepositoryTest.java 
b/repository/src/test/java/org/apache/atlas/BaseRepositoryTest.java
index 9714a8b..6656dc6 100644
--- a/repository/src/test/java/org/apache/atlas/BaseRepositoryTest.java
+++ b/repository/src/test/java/org/apache/atlas/BaseRepositoryTest.java
@@ -395,7 +395,7 @@ public class BaseRepositoryTest {
     }
     private Id createInstance(Referenceable referenceable, ClassType clsType) 
throws Exception {
         ITypedReferenceableInstance typedInstance = 
clsType.convert(referenceable, Multiplicity.REQUIRED);
-        List<String> guids = repository.createEntities(typedInstance);
+        List<String> guids = 
repository.createEntities(typedInstance).getCreatedEntities();
 
         // return the reference to created instance with guid
         return new Id(guids.get(guids.size() - 1), 0, 
referenceable.getTypeName());

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/test/java/org/apache/atlas/TestUtils.java
----------------------------------------------------------------------
diff --git a/repository/src/test/java/org/apache/atlas/TestUtils.java 
b/repository/src/test/java/org/apache/atlas/TestUtils.java
index 1d1a5e0..e5abd77 100755
--- a/repository/src/test/java/org/apache/atlas/TestUtils.java
+++ b/repository/src/test/java/org/apache/atlas/TestUtils.java
@@ -24,6 +24,7 @@ import static 
org.apache.atlas.typesystem.types.utils.TypesUtil.createRequiredAt
 import static 
org.apache.atlas.typesystem.types.utils.TypesUtil.createStructTypeDef;
 import static 
org.apache.atlas.typesystem.types.utils.TypesUtil.createTraitTypeDef;
 import static 
org.apache.atlas.typesystem.types.utils.TypesUtil.createUniqueRequiredAttrDef;
+import static org.testng.Assert.assertEquals;
 
 import java.io.File;
 import java.io.FileOutputStream;
@@ -38,7 +39,11 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 import org.apache.atlas.listener.EntityChangeListener;
 import org.apache.atlas.listener.TypesChangeListener;
@@ -53,14 +58,17 @@ import org.apache.atlas.repository.typestore.ITypeStore;
 import org.apache.atlas.services.DefaultMetadataService;
 import org.apache.atlas.services.MetadataService;
 import org.apache.atlas.type.AtlasTypeRegistry;
+import org.apache.atlas.typesystem.IInstance;
 import org.apache.atlas.typesystem.ITypedReferenceableInstance;
 import org.apache.atlas.typesystem.Referenceable;
 import org.apache.atlas.typesystem.TypesDef;
 import org.apache.atlas.typesystem.json.InstanceSerialization;
 import org.apache.atlas.typesystem.persistence.Id;
 import org.apache.atlas.typesystem.types.AttributeDefinition;
+import org.apache.atlas.typesystem.types.AttributeInfo;
 import org.apache.atlas.typesystem.types.ClassType;
 import org.apache.atlas.typesystem.types.DataTypes;
+import org.apache.atlas.typesystem.types.DataTypes.TypeCategory;
 import org.apache.atlas.typesystem.types.EnumTypeDefinition;
 import org.apache.atlas.typesystem.types.EnumValue;
 import org.apache.atlas.typesystem.types.HierarchicalTypeDefinition;
@@ -89,6 +97,32 @@ public final class TestUtils {
 
     public static final long TEST_DATE_IN_LONG = 1418265358440L;
 
+
+    public static final String EMPLOYEES_ATTR = "employees";
+    public static final String DEPARTMENT_ATTR = "department";
+    public static final String ASSETS_ATTR = "assets";
+
+    public static final String POSITIONS_ATTR = "positions";
+    public static final String ASSET_TYPE = "TestAsset";
+
+    public static final String DATABASE_TYPE = "hive_database";
+    public static final String DATABASE_NAME = "foo";
+    public static final String TABLE_TYPE = "hive_table";
+    public static final String PROCESS_TYPE = "hive_process";
+    public static final String COLUMN_TYPE = "column_type";
+    public static final String TABLE_NAME = "bar";
+    public static final String CLASSIFICATION = "classification";
+    public static final String PII = "PII";
+    public static final String SUPER_TYPE_NAME = "Base";
+    public static final String STORAGE_DESC_TYPE = "hive_storagedesc";
+    public static final String PARTITION_STRUCT_TYPE = "partition_struct_type";
+    public static final String PARTITION_CLASS_TYPE = "partition_class_type";
+    public static final String SERDE_TYPE = "serdeType";
+    public static final String COLUMNS_MAP = "columnsMap";
+    public static final String COLUMNS_ATTR_NAME = "columns";
+
+    public static final String NAME = "name";
+
     private TestUtils() {
     }
 
@@ -141,17 +175,21 @@ public final class TestUtils {
                         createRequiredAttrDef("city", DataTypes.STRING_TYPE));
 
         HierarchicalTypeDefinition<ClassType> deptTypeDef = 
createClassTypeDef(DEPARTMENT_TYPE, "Department"+_description, 
ImmutableSet.<String>of(),
-                createRequiredAttrDef("name", DataTypes.STRING_TYPE),
-                new AttributeDefinition("employees", 
String.format("array<%s>", "Person"), Multiplicity.OPTIONAL,
-                        true, "department"));
+                createRequiredAttrDef(NAME, DataTypes.STRING_TYPE),
+                new AttributeDefinition(EMPLOYEES_ATTR, 
String.format("array<%s>", "Person"), Multiplicity.OPTIONAL,
+                        true, DEPARTMENT_ATTR),
+                new AttributeDefinition(POSITIONS_ATTR, 
String.format("map<%s,%s>", DataTypes.STRING_TYPE.getName(), "Person"), 
Multiplicity.OPTIONAL,
+                        false, null)
+                );
 
         HierarchicalTypeDefinition<ClassType> personTypeDef = 
createClassTypeDef("Person", "Person"+_description, ImmutableSet.<String>of(),
-                createRequiredAttrDef("name", DataTypes.STRING_TYPE),
+                createRequiredAttrDef(NAME, DataTypes.STRING_TYPE),
                 createOptionalAttrDef("orgLevel", "OrgLevel"),
                 createOptionalAttrDef("address", "Address"),
-                new AttributeDefinition("department", "Department", 
Multiplicity.REQUIRED, false, "employees"),
+                new AttributeDefinition(DEPARTMENT_ATTR, "Department", 
Multiplicity.REQUIRED, false, EMPLOYEES_ATTR),
                 new AttributeDefinition("manager", "Manager", 
Multiplicity.OPTIONAL, false, "subordinates"),
                 new AttributeDefinition("mentor", "Person", 
Multiplicity.OPTIONAL, false, null),
+                new AttributeDefinition(ASSETS_ATTR, 
String.format("array<%s>", ASSET_TYPE) , Multiplicity.OPTIONAL, false, null),
                 createOptionalAttrDef("birthday", DataTypes.DATE_TYPE),
                 createOptionalAttrDef("hasPets", DataTypes.BOOLEAN_TYPE),
                 createOptionalAttrDef("numberOfCars", DataTypes.BYTE_TYPE),
@@ -165,6 +203,12 @@ public final class TestUtils {
                 createOptionalAttrDef("isOrganDonor", DataTypes.BOOLEAN_TYPE)
                 );
 
+
+        HierarchicalTypeDefinition<ClassType> assetTypeDef = 
createClassTypeDef(ASSET_TYPE, "Asset"+_description, ImmutableSet.<String>of(),
+                createRequiredAttrDef(NAME, DataTypes.STRING_TYPE),
+                new AttributeDefinition("childAssets", 
String.format("array<%s>", ASSET_TYPE) , Multiplicity.OPTIONAL, false, null)
+                );
+
         HierarchicalTypeDefinition<ClassType> managerTypeDef = 
createClassTypeDef("Manager", "Manager"+_description, ImmutableSet.of("Person"),
                 new AttributeDefinition("subordinates", 
String.format("array<%s>", "Person"), Multiplicity.COLLECTION,
                         false, "manager"));
@@ -175,7 +219,7 @@ public final class TestUtils {
 
         ts.defineTypes(ImmutableList.of(orgLevelEnum), 
ImmutableList.of(addressDetails),
                 ImmutableList.of(securityClearanceTypeDef),
-                ImmutableList.of(deptTypeDef, personTypeDef, managerTypeDef));
+                ImmutableList.of(deptTypeDef, personTypeDef, managerTypeDef, 
assetTypeDef));
     }
 
     public static final String DEPARTMENT_TYPE = "Department";
@@ -193,9 +237,9 @@ public final class TestUtils {
         Referenceable max = new Referenceable("Person");
         Referenceable maxAddr = new Referenceable("Address");
 
-        hrDept.set("name", "hr");
-        john.set("name", "John");
-        john.set("department", hrDept);
+        hrDept.set(NAME, "hr");
+        john.set(NAME, "John");
+        john.set(DEPARTMENT_ATTR, hrDept);
         johnAddr.set("street", "Stewart Drive");
         johnAddr.set("city", "Sunnyvale");
         john.set("address", johnAddr);
@@ -212,22 +256,22 @@ public final class TestUtils {
         john.set("numberOfStarsEstimate", new 
BigInteger("1000000000000000000000"));
         john.set("approximationOfPi", new 
BigDecimal("3.141592653589793238462643383279502884197169399375105820974944592307816406286"));
 
-        jane.set("name", "Jane");
-        jane.set("department", hrDept);
+        jane.set(NAME, "Jane");
+        jane.set(DEPARTMENT_ATTR, hrDept);
         janeAddr.set("street", "Great America Parkway");
         janeAddr.set("city", "Santa Clara");
         jane.set("address", janeAddr);
         janeAddr.set("street", "Great America Parkway");
 
-        julius.set("name", "Julius");
-        julius.set("department", hrDept);
+        julius.set(NAME, "Julius");
+        julius.set(DEPARTMENT_ATTR, hrDept);
         juliusAddr.set("street", "Madison Ave");
         juliusAddr.set("city", "Newtonville");
         julius.set("address", juliusAddr);
         julius.set("subordinates", ImmutableList.<Referenceable>of());
 
-        max.set("name", "Max");
-        max.set("department", hrDept);
+        max.set(NAME, "Max");
+        max.set(DEPARTMENT_ATTR, hrDept);
         maxAddr.set("street", "Ripley St");
         maxAddr.set("city", "Newton");
         max.set("address", maxAddr);
@@ -247,7 +291,7 @@ public final class TestUtils {
 
         john.set("manager", jane);
         john.set("mentor", max);
-        hrDept.set("employees", ImmutableList.of(john, jane, julius, max));
+        hrDept.set(EMPLOYEES_ATTR, ImmutableList.of(john, jane, julius, max));
 
         jane.set("subordinates", ImmutableList.of(john, max));
 
@@ -260,23 +304,7 @@ public final class TestUtils {
         return hrDept2;
     }
 
-    public static final String DATABASE_TYPE = "hive_database";
-    public static final String DATABASE_NAME = "foo";
-    public static final String TABLE_TYPE = "hive_table";
-    public static final String PROCESS_TYPE = "hive_process";
-    public static final String COLUMN_TYPE = "column_type";
-    public static final String TABLE_NAME = "bar";
-    public static final String CLASSIFICATION = "classification";
-    public static final String PII = "PII";
-    public static final String SUPER_TYPE_NAME = "Base";
-    public static final String STORAGE_DESC_TYPE = "hive_storagedesc";
-    public static final String PARTITION_STRUCT_TYPE = "partition_struct_type";
-    public static final String PARTITION_CLASS_TYPE = "partition_class_type";
-    public static final String SERDE_TYPE = "serdeType";
-    public static final String COLUMNS_MAP = "columnsMap";
-    public static final String COLUMNS_ATTR_NAME = "columns";
 
-    public static final String NAME = "name";
 
     public static TypesDef simpleType(){
         HierarchicalTypeDefinition<ClassType> superTypeDefinition =
@@ -284,7 +312,7 @@ public final class TestUtils {
                         createOptionalAttrDef("attr", DataTypes.STRING_TYPE));
 
         StructTypeDefinition structTypeDefinition = new 
StructTypeDefinition("s_type", "structType",
-                new AttributeDefinition[]{createRequiredAttrDef("name", 
DataTypes.STRING_TYPE)});
+                new AttributeDefinition[]{createRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE)});
 
         HierarchicalTypeDefinition<TraitType> traitTypeDefinition =
                 createTraitTypeDef("t_type", "traitType", 
ImmutableSet.<String>of());
@@ -306,7 +334,7 @@ public final class TestUtils {
                         createOptionalAttrDef("attr", DataTypes.STRING_TYPE));
 
         StructTypeDefinition structTypeDefinition = new 
StructTypeDefinition("s_type", "structType",
-                new AttributeDefinition[]{createRequiredAttrDef("name", 
DataTypes.STRING_TYPE)});
+                new AttributeDefinition[]{createRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE)});
 
         HierarchicalTypeDefinition<TraitType> traitTypeDefinition =
                 createTraitTypeDef("t_type", "traitType", 
ImmutableSet.<String>of());
@@ -344,7 +372,7 @@ public final class TestUtils {
 
 
         StructTypeDefinition structTypeDefinition = new 
StructTypeDefinition("serdeType", "serdeType" + _description,
-                new AttributeDefinition[]{createRequiredAttrDef("name", 
DataTypes.STRING_TYPE),
+                new AttributeDefinition[]{createRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE),
                     createRequiredAttrDef("serde", DataTypes.STRING_TYPE),
                     createOptionalAttrDef("description", 
DataTypes.STRING_TYPE)});
 
@@ -354,11 +382,11 @@ public final class TestUtils {
 
         HierarchicalTypeDefinition<ClassType> columnsDefinition =
                 createClassTypeDef(COLUMN_TYPE, ImmutableSet.<String>of(),
-                        createUniqueRequiredAttrDef("name", 
DataTypes.STRING_TYPE),
+                        createUniqueRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE),
                         createRequiredAttrDef("type", DataTypes.STRING_TYPE));
 
         StructTypeDefinition partitionDefinition = new 
StructTypeDefinition("partition_struct_type", "partition_struct_type" + 
_description,
-                new AttributeDefinition[]{createRequiredAttrDef("name", 
DataTypes.STRING_TYPE),});
+                new AttributeDefinition[]{createRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE),});
 
         AttributeDefinition[] attributeDefinitions = new AttributeDefinition[]{
             new AttributeDefinition("location", 
DataTypes.STRING_TYPE.getName(), Multiplicity.OPTIONAL, false,
@@ -403,7 +431,7 @@ public final class TestUtils {
 
         HierarchicalTypeDefinition<ClassType> tableTypeDefinition =
                 createClassTypeDef(TABLE_TYPE, TABLE_TYPE + _description, 
ImmutableSet.of(SUPER_TYPE_NAME),
-                        TypesUtil.createUniqueRequiredAttrDef("name", 
DataTypes.STRING_TYPE),
+                        TypesUtil.createUniqueRequiredAttrDef(NAME, 
DataTypes.STRING_TYPE),
                         createRequiredAttrDef("description", 
DataTypes.STRING_TYPE),
                         createRequiredAttrDef("type", DataTypes.STRING_TYPE),
                         createOptionalAttrDef("created", DataTypes.DATE_TYPE),
@@ -498,19 +526,75 @@ public final class TestUtils {
         return entity;
     }
 
+    /**
+     * Creates an entity in the graph and does basic validation
+     * of the GuidMapping that was created in the process.
+     *
+     */
     public static String createInstance(MetadataService metadataService, 
Referenceable entity) throws Exception {
         RequestContext.createContext();
 
         String entityjson = InstanceSerialization.toJson(entity, true);
         JSONArray entitiesJson = new JSONArray();
         entitiesJson.put(entityjson);
-        List<String> guids = 
metadataService.createEntities(entitiesJson.toString());
+        CreateUpdateEntitiesResult creationResult = 
metadataService.createEntities(entitiesJson.toString());
+        Map<String,String> guidMap = 
creationResult.getGuidMapping().getGuidAssignments();
+        Map<Id, Referenceable> referencedObjects = 
findReferencedObjects(entity);
+
+        for(Map.Entry<Id,Referenceable> entry : referencedObjects.entrySet()) {
+            Id foundId = entry.getKey();
+            if(foundId.isUnassigned()) {
+                String guid = guidMap.get(entry.getKey()._getId());
+                Referenceable obj = entry.getValue();
+                loadAndDoSimpleValidation(guid,obj, metadataService);
+            }
+        }
+        List<String> guids = creationResult.getCreatedEntities();
         if (guids != null && guids.size() > 0) {
             return guids.get(guids.size() - 1);
         }
         return null;
     }
 
+    private static Map<Id,Referenceable> findReferencedObjects(Referenceable 
ref) {
+        Map<Id, Referenceable> result = new HashMap<>();
+        findReferencedObjects(ref, result);
+        return result;
+    }
+
+    private static void findReferencedObjects(Referenceable ref, Map<Id, 
Referenceable> seen) {
+
+        Id guid = ref.getId();
+        if(seen.containsKey(guid)) {
+            return;
+        }
+        seen.put(guid, ref);
+        for(Map.Entry<String, Object> attr : ref.getValuesMap().entrySet()) {
+            Object value = attr.getValue();
+            if(value instanceof Referenceable) {
+                findReferencedObjects((Referenceable)value, seen);
+            }
+            else if(value instanceof List) {
+                for(Object o : (List)value) {
+                    if(o instanceof Referenceable) {
+                        findReferencedObjects((Referenceable)o, seen);
+                    }
+                }
+            }
+            else if(value instanceof Map) {
+                for(Object o : ((Map)value).values()) {
+                    if(o instanceof Referenceable) {
+                        findReferencedObjects((Referenceable)o, seen);
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Clears the state in the request context.
+     *
+     */
     public static void resetRequestContext() {
         //reset the context while preserving the user
         String user = RequestContext.get().getUser();
@@ -518,6 +602,10 @@ public final class TestUtils {
         RequestContext.get().setUser(user);
     }
 
+    /**
+     * Triggers the Atlas initialization process using the specified 
MetadataRepository.
+     * This causes the built-in types and their indices to be created.
+     */
     public static void setupGraphProvider(MetadataRepository repo) throws 
AtlasException {
         TypeCache typeCache = null;
         try {
@@ -634,4 +722,60 @@ public final class TestUtils {
 
         });
     }
+
+    /**
+     * Loads the entity and does sanity testing of the GuidMapping  that was
+     * created during the operation.
+     *
+     */
+    public static ITypedReferenceableInstance loadAndDoSimpleValidation(String 
guid, Referenceable original, MetadataRepository repositoryService) throws 
AtlasException {
+        ITypedReferenceableInstance loaded = 
repositoryService.getEntityDefinition(guid);
+        doSimpleValidation(original,  loaded);
+        return loaded;
+    }
+
+    /**
+     * Loads the entity and does sanity testing of the GuidMapping that was
+     * created during the operation.
+     *
+     */
+    public static ITypedReferenceableInstance loadAndDoSimpleValidation(String 
guid, Referenceable original, MetadataService repositoryService) throws 
AtlasException {
+        ITypedReferenceableInstance loaded = 
repositoryService.getEntityDefinition(guid);
+        doSimpleValidation(original,  loaded);
+        return loaded;
+
+    }
+
+    private static void doSimpleValidation(Referenceable original, IInstance 
loaded) throws AtlasException {
+
+        assertEquals(loaded.getTypeName(), original.getTypeName());
+        ClassType ct = TypeSystem.getInstance().getDataType(ClassType.class, 
loaded.getTypeName());
+
+        //compare primitive fields
+        for(AttributeInfo field : ct.fieldMapping.fields.values()) {
+            if(field.dataType().getTypeCategory() == TypeCategory.PRIMITIVE) {
+                if(original.get(field.name) != null) {
+                    Object rawLoadedValue = loaded.get(field.name);
+                    Object rawProvidedValue = original.get(field.name);
+                    Object convertedLoadedValue = 
field.dataType().convert(rawLoadedValue, Multiplicity.REQUIRED);
+                    Object convertedProvidedValue = 
field.dataType().convert(rawProvidedValue, Multiplicity.REQUIRED);
+
+                    assertEquals(convertedLoadedValue, convertedProvidedValue);
+                }
+            }
+        }
+    }
+
+    /**
+     * Validates that the two String Collections contain the same items, 
without
+     * regard to order.
+     *
+     */
+    public static void assertContentsSame(Collection<String> actual, 
Collection<String> expected) {
+        assertEquals(actual.size(), expected.size());
+        Set<String> checker = new HashSet<>();
+        checker.addAll(expected);
+        checker.removeAll(actual);
+        assertEquals(checker.size(), 0);
+    }
 }

http://git-wip-us.apache.org/repos/asf/incubator-atlas/blob/5f508c97/repository/src/test/java/org/apache/atlas/discovery/GraphBackedDiscoveryServiceTest.java
----------------------------------------------------------------------
diff --git 
a/repository/src/test/java/org/apache/atlas/discovery/GraphBackedDiscoveryServiceTest.java
 
b/repository/src/test/java/org/apache/atlas/discovery/GraphBackedDiscoveryServiceTest.java
index ce87c9e..ffda984 100755
--- 
a/repository/src/test/java/org/apache/atlas/discovery/GraphBackedDiscoveryServiceTest.java
+++ 
b/repository/src/test/java/org/apache/atlas/discovery/GraphBackedDiscoveryServiceTest.java
@@ -121,7 +121,7 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
             }
 
         }
-      
+
         //We need to commit the transaction before creating the indices to 
release the locks held by the transaction.
         //otherwise, the index commit will fail while waiting for the those 
locks to be released.
         AtlasGraphProvider.getGraphInstance().commit();
@@ -302,7 +302,7 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
         for (String name : Arrays.asList("John", "Max")) {
             Assert.assertTrue(names.contains(name));
         }
-        
+
         // Query for all Vertices modified after 01/01/2015 00:00:00 GMT
         r = discoveryService.searchByGremlin("g.V.filter{it." + 
Constants.MODIFICATION_TIMESTAMP_PROPERTY_KEY + " > 1420070400000}.toList()");
         Assert.assertTrue(r instanceof List);
@@ -524,55 +524,55 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
                 {"hive_db, hive_table limit 5", 5},
                 {"hive_db, hive_table limit 5 offset 0", 5},
                 {"hive_db, hive_table limit 5 offset 5", 5},
-                
+
                 {"View is JdbcAccess", 2},
                 {"View is JdbcAccess limit 1", 1},
                 {"View is JdbcAccess limit 2 offset 1", 1},
                 {"hive_db as db1, hive_table where db1.name = \"Reporting\"", 
0}, //Not working - ATLAS-145
-                
-                
+
+
                 {"from hive_table", 10},
                 {"from hive_table limit 5", 5},
                 {"from hive_table limit 5 offset 5", 5},
-                
+
                 {"hive_table", 10},
                 {"hive_table limit 5", 5},
                 {"hive_table limit 5 offset 5", 5},
-                
+
                 {"hive_table isa Dimension", 3},
                 {"hive_table isa Dimension limit 2", 2},
                 {"hive_table isa Dimension limit 2 offset 0", 2},
                 {"hive_table isa Dimension limit 2 offset 1", 2},
                 {"hive_table isa Dimension limit 3 offset 1", 2},
-                
+
                 {"hive_column where hive_column isa PII", 8},
                 {"hive_column where hive_column isa PII limit 5", 5},
                 {"hive_column where hive_column isa PII limit 5 offset 1", 5},
                 {"hive_column where hive_column isa PII limit 5 offset 5", 3},
-                
-                
+
+
                 {"View is Dimension" , 2},
                 {"View is Dimension limit 1" , 1},
                 {"View is Dimension limit 1 offset 1" , 1},
                 {"View is Dimension limit 10 offset 1" , 1},
-                
+
                 {"hive_column select hive_column.name", 37},
                 {"hive_column select hive_column.name limit 5", 5},
                 {"hive_column select hive_column.name limit 5 offset 36", 1},
-                
+
                 {"hive_column select name", 37},
                 {"hive_column select name limit 5", 5},
                 {"hive_column select name limit 5 offset 36 ", 1},
-                
+
                 {"hive_column where hive_column.name=\"customer_id\"", 6},
                 {"hive_column where hive_column.name=\"customer_id\" limit 2", 
2},
                 {"hive_column where hive_column.name=\"customer_id\" limit 2 
offset 1", 2},
                 {"hive_column where hive_column.name=\"customer_id\" limit 10 
offset 3", 3},
-                
+
                 {"from hive_table select hive_table.name", 10},
                 {"from hive_table select hive_table.name limit 5", 5},
                 {"from hive_table select hive_table.name limit 5 offset 5", 5},
-                
+
                 {"hive_db where (name = \"Reporting\")", 1},
                 {"hive_db where (name = \"Reporting\") limit 10", 1},
                 {"hive_db where (name = \"Reporting\") select name as _col_0, 
owner as _col_1", 1},
@@ -585,18 +585,18 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
                 {"hive_db where hive_db has name limit 5", 3},
                 {"hive_db where hive_db has name limit 2 offset 0", 2},
                 {"hive_db where hive_db has name limit 2 offset 1", 2},
-                
+
                 {"hive_db as db1 hive_table where (db1.name = \"Reporting\")", 
0}, //Not working -> ATLAS-145
                 {"hive_db where (name = \"Reporting\") select name as _col_0, 
(createTime + 1) as _col_1 ", 1},
                 {"hive_db where (name = \"Reporting\") select name as _col_0, 
(createTime + 1) as _col_1 limit 10", 1},
                 {"hive_db where (name = \"Reporting\") select name as _col_0, 
(createTime + 1) as _col_1 limit 10 offset 1", 0},
                 {"hive_db where (name = \"Reporting\") select name as _col_0, 
(createTime + 1) as _col_1 limit 10 offset 0", 1},
-                
+
                 {"hive_table where (name = \"sales_fact\" and createTime > 
\"2014-01-01\" ) select name as _col_0, createTime as _col_1 ", 1},
                 {"hive_table where (name = \"sales_fact\" and createTime > 
\"2014-01-01\" ) select name as _col_0, createTime as _col_1 limit 10 ", 1},
                 {"hive_table where (name = \"sales_fact\" and createTime > 
\"2014-01-01\" ) select name as _col_0, createTime as _col_1 limit 10 offset 
0", 1},
                 {"hive_table where (name = \"sales_fact\" and createTime > 
\"2014-01-01\" ) select name as _col_0, createTime as _col_1 limit 10 offset 
5", 0},
-                
+
                 {"hive_table where (name = \"sales_fact\" and createTime >= 
\"2014-12-11T02:35:58.440Z\" ) select name as _col_0, createTime as _col_1 ", 
1},
                 {"hive_table where (name = \"sales_fact\" and createTime >= 
\"2014-12-11T02:35:58.440Z\" ) select name as _col_0, createTime as _col_1 
limit 10 offset 0", 1},
                 {"hive_table where (name = \"sales_fact\" and createTime >= 
\"2014-12-11T02:35:58.440Z\" ) select name as _col_0, createTime as _col_1 
limit 10 offset 1", 0},
@@ -608,25 +608,25 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
                 {"Dimension limit 2", 2},
                 {"Dimension limit 2 offset 1", 2},
                 {"Dimension limit 5 offset 4", 1},
-                
+
                 {"JdbcAccess", 2},
                 {"JdbcAccess limit 5 offset 0", 2},
                 {"JdbcAccess limit 2 offset 1", 1},
                 {"JdbcAccess limit 1", 1},
-                
+
                 {"ETL", 5},
                 {"ETL limit 2", 2},
                 {"ETL limit 1", 1},
                 {"ETL limit 1 offset 0", 1},
                 {"ETL limit 2 offset 1", 2},
-                
+
                 {"Metric", 9},
                 {"Metric limit 10", 9},
                 {"Metric limit 2", 2},
                 {"Metric limit 10 offset 1", 8},
-                
-                
-                
+
+
+
                 {"PII", 8},
                 {"PII limit 10", 8},
                 {"PII limit 2", 2},
@@ -933,7 +933,7 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
 
         System.out.println("query [" + dslQuery + "] returned [" + 
rows.length() + "] rows");
     }
-    
+
     @Test(dataProvider = "dslQueriesProvider")
     public void  testSearchByDSLQueries(String dslQuery, Integer 
expectedNumRows) throws Exception {
         runQuery(dslQuery, expectedNumRows, 40, 0);
@@ -1207,6 +1207,27 @@ public class GraphBackedDiscoveryServiceTest extends 
BaseRepositoryTest {
 
     }
 
+    @Test
+    public void testSearchForTypeWithNoInstances() throws Exception {
+
+        HierarchicalTypeDefinition EMPTY = createClassTypeDef("EmptyType", 
null,
+                createRequiredAttrDef("a", DataTypes.INT_TYPE));
+        TypeSystem.getInstance().defineClassTypes(EMPTY);
+
+        String dslQuery = "EmptyType";
+        String jsonResults = searchByDSL(dslQuery);
+        assertNotNull(jsonResults);
+        JSONObject results = new JSONObject(jsonResults);
+
+        assertEquals(results.length(), 3);
+
+        JSONArray rows = results.getJSONArray("rows");
+        assertNotNull(rows);
+
+        // query should not return any rows
+        assertEquals(rows.length(), 0);
+    }
+
     private FieldValueValidator makeCountValidator(int count) {
         return new 
FieldValueValidator().withFieldNames("count()").withExpectedValues(count);
     }

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