Repository: asterixdb
Updated Branches:
  refs/heads/master 8769807ba -> 50860b839


http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-4/drop-dependency.4.ddl.sqlpp
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-4/drop-dependency.4.ddl.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-4/drop-dependency.4.ddl.sqlpp
new file mode 100644
index 0000000..c972efc
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-4/drop-dependency.4.ddl.sqlpp
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under A
+ * 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.
+ */
+
+/*
+ * Description  : Try to drop a functional dependency
+ * Expected Res : Error
+ */
+
+drop dataverse B if exists;
+drop dataverse C if exists;
+create dataverse B;
+create dataverse C;
+use C;
+
+create type TweetMessageType as closed {
+  tweetid: uuid,
+  sender_location: point,
+  send_time: datetime,
+  referred_topics: {{ string }},
+  message_text: string,
+  countA: int32,
+  countB: int32
+};
+
+create dataset TweetMessages(TweetMessageType)
+primary key tweetid autogenerated;
+
+create function f1(message, text){
+  contains(message,text)
+};
+
+use B;
+
+create function f2(place, text){
+ (select m.message_text
+  from C.TweetMessages m)
+};
+
+use C;
+drop dataset TweetMessages;
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-5/drop-dependency.5.ddl.sqlpp
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-5/drop-dependency.5.ddl.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-5/drop-dependency.5.ddl.sqlpp
new file mode 100644
index 0000000..3a7f4dc
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-5/drop-dependency.5.ddl.sqlpp
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under A
+ * 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.
+ */
+
+/*
+ * Description  : Try to drop a functional dependency
+ * Expected Res : Error
+ */
+
+drop dataverse B if exists;
+drop dataverse C if exists;
+create dataverse C;
+use C;
+
+create function f1(message, text){
+  contains(message,text)
+};
+
+create function f0(message, text){
+  C.f1(message,text)
+};
+
+drop function f1@2;
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-6/drop-dependency.6.ddl.sqlpp
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-6/drop-dependency.6.ddl.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-6/drop-dependency.6.ddl.sqlpp
new file mode 100644
index 0000000..3ab7b6f
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/user-defined-functions/drop-dependency-6/drop-dependency.6.ddl.sqlpp
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under A
+ * 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.
+ */
+
+/*
+ * Description  : Try to drop a functional dependency
+ * Expected Res : Error
+ */
+
+drop dataverse B if exists;
+drop dataverse C if exists;
+create dataverse C;
+use C;
+
+create type TweetMessageType as closed {
+  tweetid: uuid,
+  sender_location: point,
+  send_time: datetime,
+  referred_topics: {{ string }},
+  message_text: string,
+  countA: int32,
+  countB: int32
+};
+
+create dataset TweetMessages(TweetMessageType)
+primary key tweetid autogenerated;
+
+create function f1(message, text){
+  contains(message,text)
+};
+
+create function f2(place, text){
+ (select m.message_text
+  from C.TweetMessages m)
+};
+
+drop dataset TweetMessages;
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/validate-default-library/validate-default-library.1.adm
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/validate-default-library/validate-default-library.1.adm
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/validate-default-library/validate-default-library.1.adm
index 8f4c581..403237e 100644
--- 
a/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/validate-default-library/validate-default-library.1.adm
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/validate-default-library/validate-default-library.1.adm
@@ -1,8 +1,8 @@
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#addHashTags", "Arity": "1", "Params": [ "Tweet" ], "ReturnType": 
"ProcessedTweet", "Definition": 
"org.apache.asterix.external.library.AddHashTagsFactory", "Language": "JAVA", 
"Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#addHashTagsInPlace", "Arity": "1", "Params": [ "Tweet" ], 
"ReturnType": "ProcessedTweet", "Definition": 
"org.apache.asterix.external.library.AddHashTagsInPlaceFactory", "Language": 
"JAVA", "Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#allTypes", "Arity": "1", "Params": [ "AllType" ], "ReturnType": 
"AllType", "Definition": "org.apache.asterix.external.library.AllTypesFactory", 
"Language": "JAVA", "Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#echoDelay", "Arity": "1", "Params": [ "TweetMessageType" ], 
"ReturnType": "TweetMessageType", "Definition": 
"org.apache.asterix.external.library.EchoDelayFactory", "Language": "JAVA", 
"Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#getCapital", "Arity": "1", "Params": [ "ASTRING" ], "ReturnType": 
"CountryCapitalType", "Definition": 
"org.apache.asterix.external.library.CapitalFinderFactory", "Language": "JAVA", 
"Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": "testlib#mysum", 
"Arity": "2", "Params": [ "AINT32", "AINT32" ], "ReturnType": "AINT32", 
"Definition": "org.apache.asterix.external.library.SumFactory", "Language": 
"JAVA", "Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#parseTweet", "Arity": "1", "Params": [ "TweetInputType" ], 
"ReturnType": "TweetOutputType", "Definition": 
"org.apache.asterix.external.library.ParseTweetFactory", "Language": "JAVA", 
"Kind": "SCALAR" } }
-{ "Function": { "DataverseName": "externallibtest", "Name": "testlib#toUpper", 
"Arity": "1", "Params": [ "TextType" ], "ReturnType": "TextType", "Definition": 
"org.apache.asterix.external.library.UpperCaseFactory", "Language": "JAVA", 
"Kind": "SCALAR" } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#addHashTags", "Arity": "1", "Params": [ "Tweet" ], "ReturnType": 
"ProcessedTweet", "Definition": 
"org.apache.asterix.external.library.AddHashTagsFactory", "Language": "JAVA", 
"Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#addHashTagsInPlace", "Arity": "1", "Params": [ "Tweet" ], 
"ReturnType": "ProcessedTweet", "Definition": 
"org.apache.asterix.external.library.AddHashTagsInPlaceFactory", "Language": 
"JAVA", "Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#allTypes", "Arity": "1", "Params": [ "AllType" ], "ReturnType": 
"AllType", "Definition": "org.apache.asterix.external.library.AllTypesFactory", 
"Language": "JAVA", "Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#echoDelay", "Arity": "1", "Params": [ "TweetMessageType" ], 
"ReturnType": "TweetMessageType", "Definition": 
"org.apache.asterix.external.library.EchoDelayFactory", "Language": "JAVA", 
"Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#getCapital", "Arity": "1", "Params": [ "ASTRING" ], "ReturnType": 
"CountryCapitalType", "Definition": 
"org.apache.asterix.external.library.CapitalFinderFactory", "Language": "JAVA", 
"Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": "testlib#mysum", 
"Arity": "2", "Params": [ "AINT32", "AINT32" ], "ReturnType": "AINT32", 
"Definition": "org.apache.asterix.external.library.SumFactory", "Language": 
"JAVA", "Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": 
"testlib#parseTweet", "Arity": "1", "Params": [ "TweetInputType" ], 
"ReturnType": "TweetOutputType", "Definition": 
"org.apache.asterix.external.library.ParseTweetFactory", "Language": "JAVA", 
"Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }
+{ "Function": { "DataverseName": "externallibtest", "Name": "testlib#toUpper", 
"Arity": "1", "Params": [ "TextType" ], "ReturnType": "TextType", "Definition": 
"org.apache.asterix.external.library.UpperCaseFactory", "Language": "JAVA", 
"Kind": "SCALAR", "Dependencies": [ [  ], [  ] ] } }

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/results/user-defined-functions/check-dependencies-1/check-dependencies-1.1.adm
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/results/user-defined-functions/check-dependencies-1/check-dependencies-1.1.adm
 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/user-defined-functions/check-dependencies-1/check-dependencies-1.1.adm
new file mode 100644
index 0000000..50f19bb
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/runtimets/results/user-defined-functions/check-dependencies-1/check-dependencies-1.1.adm
@@ -0,0 +1,6 @@
+{ "DataverseName": "B", "Name": "f0", "Dependencies": [ [  ], [  ] ] }
+{ "DataverseName": "B", "Name": "f5", "Dependencies": [ [ [ "C", 
"TweetMessages" ], [ "B", "TweetMessages2" ] ], [ [ "C", "f1", "2" ], [ "B", 
"f0", "2" ] ] ] }
+{ "DataverseName": "C", "Name": "f1", "Dependencies": [ [  ], [  ] ] }
+{ "DataverseName": "C", "Name": "f2", "Dependencies": [ [ [ "C", 
"TweetMessages" ] ], [ [ "C", "f1", "2" ], [ "B", "f0", "2" ] ] ] }
+{ "DataverseName": "C", "Name": "f3", "Dependencies": [ [  ], [ [ "C", "f2", 
"2" ] ] ] }
+{ "DataverseName": "C", "Name": "f4", "Dependencies": [ [ [ "C", 
"TweetMessages" ] ], [  ] ] }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml 
b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
index fd47766..14784d6 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
@@ -7922,7 +7922,7 @@
     <test-case FilePath="user-defined-functions">
       <compilation-unit name="bad-function-ddl-9">
         <output-dir compare="Text">bad-function-ddl-9</output-dir>
-        <expected-error>function experiments.good_function@1 depends upon 
function experiments.function_that_does_not_exist@0 which is 
undefined</expected-error>
+        <expected-error>function experiments.function_that_does_not_exist@0 is 
not defined</expected-error>
       </compilation-unit>
     </test-case>
     <test-case FilePath="user-defined-functions">
@@ -7932,6 +7932,47 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="user-defined-functions">
+      <compilation-unit name="check-dependencies-1">
+        <output-dir compare="Text">check-dependencies-1</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-1">
+        <output-dir compare="Text">drop-dependency-1</output-dir>
+        <expected-error>Cannot drop dataverse. Function B.f0@2 depends on 
function C.f1@2</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-2">
+        <output-dir compare="Text">drop-dependency-2</output-dir>
+        <expected-error>Cannot drop dataverse. Function B.f2@2 depends on 
dataset C.TweetMessages</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-3">
+        <output-dir compare="Text">drop-dependency-3</output-dir>
+        <expected-error>Cannot drop function C.f1@2 being used by function 
B.f0@2</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-4">
+        <output-dir compare="Text">drop-dependency-4</output-dir>
+        <expected-error>Cannot drop dataset C.TweetMessages being used by 
function B.f2@2</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-5">
+        <output-dir compare="Text">drop-dependency-5</output-dir>
+        <expected-error>Cannot drop function C.f1@2 being used by function 
C.f0@2</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
+      <compilation-unit name="drop-dependency-6">
+        <output-dir compare="Text">drop-dependency-6</output-dir>
+        <expected-error>Cannot drop dataset C.TweetMessages being used by 
function C.f2@2</expected-error>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="user-defined-functions">
       <compilation-unit name="single-line-definition">
         <output-dir compare="Text">single-line-definition</output-dir>
       </compilation-unit>

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/rewrites/AqlQueryRewriter.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/rewrites/AqlQueryRewriter.java
 
b/asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/rewrites/AqlQueryRewriter.java
index 977f6bb..6ab69ad 100644
--- 
a/asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/rewrites/AqlQueryRewriter.java
+++ 
b/asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/rewrites/AqlQueryRewriter.java
@@ -40,6 +40,7 @@ import org.apache.asterix.lang.common.base.IQueryRewriter;
 import org.apache.asterix.lang.common.base.IReturningStatement;
 import org.apache.asterix.lang.common.clause.GroupbyClause;
 import org.apache.asterix.lang.common.clause.LetClause;
+import org.apache.asterix.lang.common.expression.CallExpr;
 import org.apache.asterix.lang.common.expression.GbyVariableExpressionPair;
 import org.apache.asterix.lang.common.expression.VariableExpr;
 import org.apache.asterix.lang.common.rewrites.LangRewritingContext;
@@ -68,7 +69,8 @@ class AqlQueryRewriter implements IQueryRewriter {
 
     @Override
     public void rewrite(List<FunctionDecl> declaredFunctions, 
IReturningStatement topStatement,
-            MetadataProvider metadataProvider, LangRewritingContext context) 
throws CompilationException {
+            MetadataProvider metadataProvider, LangRewritingContext context, 
boolean inlineUdfs)
+            throws CompilationException {
         setup(declaredFunctions, topStatement, metadataProvider, context);
         if (topStatement.isTopLevel()) {
             wrapInLets();
@@ -130,7 +132,8 @@ class AqlQueryRewriter implements IQueryRewriter {
         declaredFunctions.removeAll(storedFunctionDecls);
     }
 
-    private Set<FunctionSignature> getFunctionCalls(Expression expression) 
throws CompilationException {
+    @Override
+    public Set<CallExpr> getFunctionCalls(Expression expression) throws 
CompilationException {
         GatherFunctionCalls gfc = new GatherFunctionCalls();
         expression.accept(gfc, null);
         return gfc.getCalls();

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/base/IQueryRewriter.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/base/IQueryRewriter.java
 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/base/IQueryRewriter.java
index 0c6c04c..f072917 100644
--- 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/base/IQueryRewriter.java
+++ 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/base/IQueryRewriter.java
@@ -19,8 +19,10 @@
 package org.apache.asterix.lang.common.base;
 
 import java.util.List;
+import java.util.Set;
 
 import org.apache.asterix.common.exceptions.CompilationException;
+import org.apache.asterix.lang.common.expression.CallExpr;
 import org.apache.asterix.lang.common.rewrites.LangRewritingContext;
 import org.apache.asterix.lang.common.statement.FunctionDecl;
 import org.apache.asterix.metadata.declared.MetadataProvider;
@@ -39,6 +41,13 @@ public interface IQueryRewriter {
      * @param context,
      *            manages ids of variables and guarantees uniqueness of 
variables.
      */
-    public void rewrite(List<FunctionDecl> declaredFunctions, 
IReturningStatement topExpr,
-            MetadataProvider metadataProvider, LangRewritingContext context) 
throws CompilationException;
+    void rewrite(List<FunctionDecl> declaredFunctions, IReturningStatement 
topExpr,
+            MetadataProvider metadataProvider, LangRewritingContext context, 
boolean inlineUdfs)
+            throws CompilationException;
+
+    /**
+     * Find the function calls used by a given expression
+     */
+    Set<CallExpr> getFunctionCalls(Expression expression) throws 
CompilationException;
+
 }

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/util/FunctionUtil.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/util/FunctionUtil.java
 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/util/FunctionUtil.java
index 1ca9316..3571dcf 100644
--- 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/util/FunctionUtil.java
+++ 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/util/FunctionUtil.java
@@ -20,6 +20,7 @@
 package org.apache.asterix.lang.common.util;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Set;
 
@@ -27,13 +28,18 @@ import 
org.apache.asterix.common.exceptions.CompilationException;
 import org.apache.asterix.common.functions.FunctionConstants;
 import org.apache.asterix.common.functions.FunctionSignature;
 import org.apache.asterix.lang.common.base.Expression;
+import org.apache.asterix.lang.common.base.IQueryRewriter;
+import org.apache.asterix.lang.common.expression.CallExpr;
+import org.apache.asterix.lang.common.expression.LiteralExpr;
 import org.apache.asterix.lang.common.statement.FunctionDecl;
 import org.apache.asterix.metadata.MetadataManager;
 import org.apache.asterix.metadata.MetadataTransactionContext;
 import org.apache.asterix.metadata.declared.MetadataProvider;
 import org.apache.asterix.metadata.entities.Function;
+import org.apache.asterix.metadata.utils.DatasetUtil;
 import org.apache.asterix.om.functions.BuiltinFunctions;
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
+import org.apache.hyracks.algebricks.common.utils.Pair;
 import 
org.apache.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
 import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
 import org.apache.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
@@ -52,7 +58,7 @@ public class FunctionUtil {
 
     @FunctionalInterface
     public interface IFunctionCollector {
-        Set<FunctionSignature> getFunctionCalls(Expression expression) throws 
CompilationException;
+        Set<CallExpr> getFunctionCalls(Expression expression) throws 
CompilationException;
     }
 
     @FunctionalInterface
@@ -95,8 +101,9 @@ public class FunctionUtil {
         }
         String value = 
metadataProvider.getConfig().get(FunctionUtil.IMPORT_PRIVATE_FUNCTIONS);
         boolean includePrivateFunctions = (value != null) ? 
Boolean.valueOf(value.toLowerCase()) : false;
-        Set<FunctionSignature> functionCalls = 
functionCollector.getFunctionCalls(expression);
-        for (FunctionSignature signature : functionCalls) {
+        Set<CallExpr> functionCalls = 
functionCollector.getFunctionCalls(expression);
+        for (CallExpr functionCall : functionCalls) {
+            FunctionSignature signature = functionCall.getFunctionSignature();
             if (declaredFunctions != null && 
declaredFunctions.contains(signature)) {
                 continue;
             }
@@ -155,6 +162,35 @@ public class FunctionUtil {
         return functionDecls;
     }
 
+    public static List<List<List<String>>> 
getFunctionDependencies(IQueryRewriter rewriter, Expression expression,
+            MetadataProvider metadataProvider) throws CompilationException {
+        Set<CallExpr> functionCalls = rewriter.getFunctionCalls(expression);
+        //Get the List of used functions and used datasets
+        List<List<String>> datasourceDependencies = new ArrayList<>();
+        List<List<String>> functionDependencies = new ArrayList<>();
+        for (CallExpr functionCall : functionCalls) {
+            FunctionSignature signature = functionCall.getFunctionSignature();
+            FunctionIdentifier fid =
+                    new FunctionIdentifier(signature.getNamespace(), 
signature.getName(), signature.getArity());
+            if (fid.equals(BuiltinFunctions.DATASET)) {
+                Pair<String, String> path = 
DatasetUtil.getDatasetInfo(metadataProvider,
+                        ((LiteralExpr) 
functionCall.getExprList().get(0)).getValue().getStringValue());
+                datasourceDependencies.add(Arrays.asList(path.first, 
path.second));
+            }
+
+            else if (BuiltinFunctions.isBuiltinCompilerFunction(signature, 
false)) {
+                continue;
+            } else {
+                
functionDependencies.add(Arrays.asList(signature.getNamespace(), 
signature.getName(),
+                        Integer.toString(signature.getArity())));
+            }
+        }
+        List<List<List<String>>> dependencies = new ArrayList<>();
+        dependencies.add(datasourceDependencies);
+        dependencies.add(functionDependencies);
+        return dependencies;
+    }
+
     private static Function 
lookupUserDefinedFunctionDecl(MetadataTransactionContext mdTxnCtx,
             FunctionSignature signature) throws AlgebricksException {
         if (signature.getNamespace() == null) {

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/AbstractInlineUdfsVisitor.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/AbstractInlineUdfsVisitor.java
 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/AbstractInlineUdfsVisitor.java
index 7d8c11e..8ae67d6 100644
--- 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/AbstractInlineUdfsVisitor.java
+++ 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/AbstractInlineUdfsVisitor.java
@@ -347,7 +347,7 @@ public abstract class AbstractInlineUdfsVisitor extends 
AbstractQueryExpressionV
         metadataProvider.setDefaultDataverse(fnDataverse);
         try {
             IQueryRewriter queryRewriter = 
rewriterFactory.createQueryRewriter();
-            queryRewriter.rewrite(declaredFunctions, wrappedQuery, 
metadataProvider, context);
+            queryRewriter.rewrite(declaredFunctions, wrappedQuery, 
metadataProvider, context, true);
             return wrappedQuery.getBody();
         } finally {
             metadataProvider.setDefaultDataverse(defaultDataverse);

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/GatherFunctionCallsVisitor.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/GatherFunctionCallsVisitor.java
 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/GatherFunctionCallsVisitor.java
index 8842d86..3d149fb 100644
--- 
a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/GatherFunctionCallsVisitor.java
+++ 
b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/GatherFunctionCallsVisitor.java
@@ -23,7 +23,6 @@ import java.util.HashSet;
 import java.util.Set;
 
 import org.apache.asterix.common.exceptions.CompilationException;
-import org.apache.asterix.common.functions.FunctionSignature;
 import org.apache.asterix.lang.common.base.Expression;
 import org.apache.asterix.lang.common.clause.GroupbyClause;
 import org.apache.asterix.lang.common.clause.LetClause;
@@ -53,11 +52,11 @@ import 
org.apache.asterix.lang.common.visitor.base.AbstractQueryExpressionVisito
 
 public class GatherFunctionCallsVisitor extends 
AbstractQueryExpressionVisitor<Void, Void> {
 
-    protected final Set<FunctionSignature> calls = new 
HashSet<FunctionSignature>();
+    protected final Set<CallExpr> calls = new HashSet<>();
 
     @Override
     public Void visit(CallExpr pf, Void arg) throws CompilationException {
-        calls.add(pf.getFunctionSignature());
+        calls.add(pf);
         for (Expression e : pf.getExprList()) {
             e.accept(this, arg);
         }
@@ -202,7 +201,7 @@ public class GatherFunctionCallsVisitor extends 
AbstractQueryExpressionVisitor<V
         return null;
     }
 
-    public Set<FunctionSignature> getCalls() {
+    public Set<CallExpr> getCalls() {
         return calls;
     }
 

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java
 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java
index a8b3dc6..cd57396 100644
--- 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java
+++ 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java
@@ -31,7 +31,7 @@ class SqlppFunctionBodyRewriter extends SqlppQueryRewriter {
     @Override
     public void rewrite(List<FunctionDecl> declaredFunctions, 
IReturningStatement topStatement,
             MetadataProvider metadataProvider,
-            LangRewritingContext context) throws CompilationException {
+            LangRewritingContext context, boolean inlineUdfs) throws 
CompilationException {
         // Sets up parameters.
         setup(declaredFunctions, topStatement, metadataProvider, context);
 
@@ -63,6 +63,6 @@ class SqlppFunctionBodyRewriter extends SqlppQueryRewriter {
         rewriteListInputFunctions();
 
         // Inlines functions recursively.
-        inlineDeclaredUdfs();
+        inlineDeclaredUdfs(inlineUdfs);
     }
 }

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppQueryRewriter.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppQueryRewriter.java
 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppQueryRewriter.java
index 3e9a873..befa5ab 100644
--- 
a/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppQueryRewriter.java
+++ 
b/asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppQueryRewriter.java
@@ -28,6 +28,7 @@ import org.apache.asterix.lang.common.base.Expression;
 import org.apache.asterix.lang.common.base.IQueryRewriter;
 import org.apache.asterix.lang.common.base.IReturningStatement;
 import org.apache.asterix.lang.common.clause.LetClause;
+import org.apache.asterix.lang.common.expression.CallExpr;
 import org.apache.asterix.lang.common.rewrites.LangRewritingContext;
 import org.apache.asterix.lang.common.statement.FunctionDecl;
 import org.apache.asterix.lang.common.util.FunctionUtil;
@@ -86,7 +87,8 @@ class SqlppQueryRewriter implements IQueryRewriter {
 
     @Override
     public void rewrite(List<FunctionDecl> declaredFunctions, 
IReturningStatement topStatement,
-            MetadataProvider metadataProvider, LangRewritingContext context) 
throws CompilationException {
+            MetadataProvider metadataProvider, LangRewritingContext context, 
boolean inlineUdfs)
+            throws CompilationException {
         if (topStatement == null) {
             return;
         }
@@ -126,7 +128,7 @@ class SqlppQueryRewriter implements IQueryRewriter {
         rewriteListInputFunctions();
 
         // Inlines functions.
-        inlineDeclaredUdfs();
+        inlineDeclaredUdfs(inlineUdfs);
 
         // Rewrites function names.
         // This should be done after inlineDeclaredUdfs() because user-defined 
function
@@ -213,7 +215,7 @@ class SqlppQueryRewriter implements IQueryRewriter {
         topExpr.accept(groupByVisitor, null);
     }
 
-    protected void inlineDeclaredUdfs() throws CompilationException {
+    protected void inlineDeclaredUdfs(boolean inlineUdfs) throws 
CompilationException {
         List<FunctionSignature> funIds = new ArrayList<FunctionSignature>();
         for (FunctionDecl fdecl : declaredFunctions) {
             funIds.add(fdecl.getSignature());
@@ -226,7 +228,7 @@ class SqlppQueryRewriter implements IQueryRewriter {
                     signature -> 
FunctionMapUtil.normalizeBuiltinFunctionSignature(signature, false)));
         }
         declaredFunctions.addAll(usedStoredFunctionDecls);
-        if (!declaredFunctions.isEmpty()) {
+        if (inlineUdfs && !declaredFunctions.isEmpty()) {
             SqlppInlineUdfsVisitor visitor = new 
SqlppInlineUdfsVisitor(context,
                     new SqlppFunctionBodyRewriterFactory() /* the rewriter for 
function bodies expressions*/,
                     declaredFunctions, metadataProvider);
@@ -237,7 +239,8 @@ class SqlppQueryRewriter implements IQueryRewriter {
         declaredFunctions.removeAll(usedStoredFunctionDecls);
     }
 
-    private Set<FunctionSignature> getFunctionCalls(Expression expression) 
throws CompilationException {
+    @Override
+    public Set<CallExpr> getFunctionCalls(Expression expression) throws 
CompilationException {
         GatherFunctionCalls gfc = new GatherFunctionCalls();
         expression.accept(gfc, null);
         return gfc.getCalls();

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataNode.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataNode.java
 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataNode.java
index ed3bbe0..6634e51 100644
--- 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataNode.java
+++ 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataNode.java
@@ -268,7 +268,6 @@ public class MetadataNode implements IMetadataNode {
         }
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public <T extends IExtensionMetadataEntity> void addEntity(TxnId txnId, T 
entity)
             throws AlgebricksException, RemoteException {
@@ -280,7 +279,6 @@ public class MetadataNode implements IMetadataNode {
         addEntity(txnId, entity, tupleTranslator, index);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public <T extends IExtensionMetadataEntity> void upsertEntity(TxnId txnId, 
T entity)
             throws AlgebricksException, RemoteException {
@@ -292,7 +290,6 @@ public class MetadataNode implements IMetadataNode {
         upsertEntity(txnId, entity, tupleTranslator, index);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public <T extends IExtensionMetadataEntity> void deleteEntity(TxnId txnId, 
T entity)
             throws AlgebricksException, RemoteException {
@@ -304,7 +301,6 @@ public class MetadataNode implements IMetadataNode {
         deleteEntity(txnId, entity, tupleTranslator, index);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public <T extends IExtensionMetadataEntity> List<T> getEntities(TxnId 
txnId, IExtensionMetadataSearchKey searchKey)
             throws AlgebricksException, RemoteException {
@@ -527,13 +523,22 @@ public class MetadataNode implements IMetadataNode {
 
             confirmDataverseCanBeDeleted(txnId, dataverseName);
 
+            // As a side effect, acquires an S lock on the 'Function' dataset
+            // on behalf of txnId.
+            List<Function> dataverseFunctions = getDataverseFunctions(txnId, 
dataverseName);
+            // Drop all functions in this dataverse.
+            for (Function function : dataverseFunctions) {
+                dropFunction(txnId, new FunctionSignature(dataverseName, 
function.getName(), function.getArity()),
+                        true);
+            }
+
             List<Dataset> dataverseDatasets;
             Dataset ds;
             dataverseDatasets = getDataverseDatasets(txnId, dataverseName);
             // Drop all datasets in this dataverse.
             for (int i = 0; i < dataverseDatasets.size(); i++) {
                 ds = dataverseDatasets.get(i);
-                dropDataset(txnId, dataverseName, ds.getDatasetName());
+                dropDataset(txnId, dataverseName, ds.getDatasetName(), true);
             }
 
             // After dropping datasets, drop datatypes
@@ -546,14 +551,6 @@ public class MetadataNode implements IMetadataNode {
                 forceDropDatatype(txnId, dataverseName, 
dataverseDatatypes.get(i).getDatatypeName());
             }
 
-            // As a side effect, acquires an S lock on the 'Function' dataset
-            // on behalf of txnId.
-            List<Function> dataverseFunctions = getDataverseFunctions(txnId, 
dataverseName);
-            // Drop all functions in this dataverse.
-            for (Function function : dataverseFunctions) {
-                dropFunction(txnId, new FunctionSignature(dataverseName, 
function.getName(), function.getArity()));
-            }
-
             // As a side effect, acquires an S lock on the 'Adapter' dataset
             // on behalf of txnId.
             List<DatasourceAdapter> dataverseAdapters = 
getDataverseAdapters(txnId, dataverseName);
@@ -609,6 +606,16 @@ public class MetadataNode implements IMetadataNode {
     @Override
     public void dropDataset(TxnId txnId, String dataverseName, String 
datasetName)
             throws AlgebricksException, RemoteException {
+        dropDataset(txnId, dataverseName, datasetName, false);
+    }
+
+    public void dropDataset(TxnId txnId, String dataverseName, String 
datasetName, boolean force)
+            throws AlgebricksException, RemoteException {
+
+        if (!force) {
+            confirmDatasetCanBeDeleted(txnId, dataverseName, datasetName);
+        }
+
         Dataset dataset = getDataset(txnId, dataverseName, datasetName);
         if (dataset == null) {
             throw new AlgebricksException("Cannot drop dataset '" + 
datasetName + "' because it doesn't exist.");
@@ -902,6 +909,19 @@ public class MetadataNode implements IMetadataNode {
         }
     }
 
+    public List<Function> getAllFunctions(TxnId txnId) throws 
AlgebricksException, RemoteException {
+        try {
+            ITupleReference searchKey = null;
+            FunctionTupleTranslator tupleReaderWriter = 
tupleTranslatorProvider.getFunctionTupleTranslator(false);
+            IValueExtractor<Function> valueExtractor = new 
MetadataEntityValueExtractor<>(tupleReaderWriter);
+            List<Function> results = new ArrayList<>();
+            searchIndex(txnId, MetadataPrimaryIndexes.FUNCTION_DATASET, 
searchKey, valueExtractor, results);
+            return results;
+        } catch (HyracksDataException e) {
+            throw new AlgebricksException(e);
+        }
+    }
+
     public List<Datatype> getAllDatatypes(TxnId txnId) throws 
AlgebricksException, RemoteException {
         try {
             ITupleReference searchKey = null;
@@ -932,6 +952,62 @@ public class MetadataNode implements IMetadataNode {
                                 + " used by dataset " + set.getDataverseName() 
+ "." + set.getDatasetName());
             }
         }
+
+        // If a function from a DIFFERENT dataverse
+        // uses functions or datatypes from this dataverse
+        // throw an error
+        List<Function> functions = getAllFunctions(txnId);
+        for (Function function : functions) {
+            if (function.getDataverseName().equals(dataverseName)) {
+                continue;
+            }
+            for (List<String> datasetDependency : 
function.getDependencies().get(0)) {
+                if (datasetDependency.get(0).equals(dataverseName)) {
+                    throw new AlgebricksException("Cannot drop dataverse. 
Function " + function.getDataverseName() + "."
+                            + function.getName() + "@" + function.getArity() + 
" depends on dataset "
+                            + datasetDependency.get(0) + "." + 
datasetDependency.get(1));
+                }
+            }
+            for (List<String> functionDependency : 
function.getDependencies().get(1)) {
+                if (functionDependency.get(0).equals(dataverseName)) {
+                    throw new AlgebricksException(
+                            "Cannot drop dataverse. Function " + 
function.getDataverseName() + "." + function.getName()
+                                    + "@" + function.getArity() + " depends on 
function " + functionDependency.get(0)
+                                    + "." + functionDependency.get(1) + "@" + 
functionDependency.get(2));
+                }
+            }
+        }
+    }
+
+    private void confirmFunctionCanBeDeleted(TxnId txnId, FunctionSignature 
signature)
+            throws AlgebricksException, RemoteException {
+        // If any other function uses this function, throw an error
+        List<Function> functions = getAllFunctions(txnId);
+        for (Function function : functions) {
+            for (List<String> functionalDependency : 
function.getDependencies().get(1)) {
+                if 
(functionalDependency.get(0).equals(signature.getNamespace())
+                        && 
functionalDependency.get(1).equals(signature.getName())
+                        && 
functionalDependency.get(2).equals(Integer.toString(signature.getArity()))) {
+                    throw new AlgebricksException("Cannot drop function " + 
signature + " being used by function "
+                            + function.getDataverseName() + "." + 
function.getName() + "@" + function.getArity());
+                }
+            }
+        }
+    }
+
+    private void confirmDatasetCanBeDeleted(TxnId txnId, String dataverseName, 
String datasetName)
+            throws AlgebricksException, RemoteException {
+        // If any function uses this type, throw an error
+        List<Function> functions = getAllFunctions(txnId);
+        for (Function function : functions) {
+            for (List<String> datasetDependency : 
function.getDependencies().get(0)) {
+                if (datasetDependency.get(0).equals(dataverseName) && 
datasetDependency.get(1).equals(datasetName)) {
+                    throw new AlgebricksException("Cannot drop dataset " + 
dataverseName + "." + datasetName
+                            + " being used by function " + 
function.getDataverseName() + "." + function.getName() + "@"
+                            + function.getArity());
+                }
+            }
+        }
     }
 
     private void confirmDatatypeIsUnused(TxnId txnId, String dataverseName, 
String datatypeName)
@@ -1123,6 +1199,15 @@ public class MetadataNode implements IMetadataNode {
     @Override
     public void dropFunction(TxnId txnId, FunctionSignature functionSignature)
             throws AlgebricksException, RemoteException {
+        dropFunction(txnId, functionSignature, false);
+    }
+
+    private void dropFunction(TxnId txnId, FunctionSignature 
functionSignature, boolean force)
+            throws AlgebricksException, RemoteException {
+
+        if (!force) {
+            confirmFunctionCanBeDeleted(txnId, functionSignature);
+        }
 
         Function function = getFunction(txnId, functionSignature);
 
@@ -1329,7 +1414,6 @@ public class MetadataNode implements IMetadataNode {
     // TODO: Can use Hyrack's TupleUtils for this, once we switch to a newer
     // Hyracks version.
     public static ITupleReference createTuple(String... fields) {
-        @SuppressWarnings("unchecked")
         ISerializerDeserializer<AString> stringSerde =
                 
SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ASTRING);
         AMutableString aString = new AMutableString("");
@@ -1836,7 +1920,6 @@ public class MetadataNode implements IMetadataNode {
 
     // This method is used to create a search tuple for external data file 
since the
     // search tuple has an int value
-    @SuppressWarnings("unchecked")
     public ITupleReference createExternalFileSearchTuple(String dataverseName, 
String datasetName, int fileNumber)
             throws HyracksDataException {
         ISerializerDeserializer<AString> stringSerde =

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataTransactionContext.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataTransactionContext.java
 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataTransactionContext.java
index 841065b..cb67ee5 100644
--- 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataTransactionContext.java
+++ 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/MetadataTransactionContext.java
@@ -158,7 +158,7 @@ public class MetadataTransactionContext extends 
MetadataCache {
 
     public void dropFunction(FunctionSignature signature) {
         Function function = new Function(signature.getNamespace(), 
signature.getName(), signature.getArity(), null,
-                null, null, null, null);
+                null, null, null, null, null);
         droppedCache.addFunctionIfNotExists(function);
         logAndApply(new MetadataLogicalOperation(function, false));
     }

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/bootstrap/MetadataRecordTypes.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/bootstrap/MetadataRecordTypes.java
 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/bootstrap/MetadataRecordTypes.java
index e0f925c..e2724e2 100644
--- 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/bootstrap/MetadataRecordTypes.java
+++ 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/bootstrap/MetadataRecordTypes.java
@@ -48,6 +48,7 @@ public final class MetadataRecordTypes {
     public static final String FIELD_NAME_DATAVERSE_NAME = "DataverseName";
     public static final String FIELD_NAME_DATA_FORMAT = "DataFormat";
     public static final String FIELD_NAME_DEFINITION = "Definition";
+    public static final String FIELD_NAME_DEPENDENCIES = "Dependencies";
     public static final String FIELD_NAME_DERIVED = "Derived";
     public static final String FIELD_NAME_DESCRIPTION = "Description";
     public static final String FIELD_NAME_EXTERNAL_DETAILS = "ExternalDetails";
@@ -321,16 +322,20 @@ public final class MetadataRecordTypes {
     public static final int FUNCTION_ARECORD_FUNCTION_DEFINITION_FIELD_INDEX = 
5;
     public static final int FUNCTION_ARECORD_FUNCTION_LANGUAGE_FIELD_INDEX = 6;
     public static final int FUNCTION_ARECORD_FUNCTION_KIND_FIELD_INDEX = 7;
+    public static final int FUNCTION_ARECORD_FUNCTION_DEPENDENCIES_FIELD_INDEX 
= 8;
     public static final ARecordType FUNCTION_RECORDTYPE = createRecordType(
             // RecordTypeName
             RECORD_NAME_FUNCTION,
             // FieldNames
             new String[] { FIELD_NAME_DATAVERSE_NAME, FIELD_NAME_NAME, 
FIELD_NAME_ARITY, FIELD_NAME_PARAMS,
-                    FIELD_NAME_RETURN_TYPE, FIELD_NAME_DEFINITION, 
FIELD_NAME_LANGUAGE, FIELD_NAME_KIND },
+                    FIELD_NAME_RETURN_TYPE, FIELD_NAME_DEFINITION, 
FIELD_NAME_LANGUAGE, FIELD_NAME_KIND,
+                    FIELD_NAME_DEPENDENCIES },
             // FieldTypes
             new IAType[] { BuiltinType.ASTRING, BuiltinType.ASTRING, 
BuiltinType.ASTRING,
                     new AOrderedListType(BuiltinType.ASTRING, null), 
BuiltinType.ASTRING, BuiltinType.ASTRING,
-                    BuiltinType.ASTRING, BuiltinType.ASTRING },
+                    BuiltinType.ASTRING, BuiltinType.ASTRING,
+                    new AOrderedListType(new AOrderedListType(new 
AOrderedListType(BuiltinType.ASTRING, null), null),
+                            null) },
             //IsOpen?
             true);
     //------------------------------------------ Adapter 
----------------------------------------//

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entities/Function.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entities/Function.java
 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entities/Function.java
index 1d1db37..8bdbaba 100644
--- 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entities/Function.java
+++ 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entities/Function.java
@@ -18,6 +18,7 @@
  */
 package org.apache.asterix.metadata.entities;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.asterix.metadata.MetadataCache;
@@ -36,13 +37,14 @@ public class Function implements IMetadataEntity<Function> {
     private final String name;
     private final int arity;
     private final List<String> params;
+    private final List<List<List<String>>> dependencies;
     private final String body;
     private final String returnType;
     private final String language;
     private final String kind;
 
     public Function(String dataverseName, String functionName, int arity, 
List<String> params, String returnType,
-            String functionBody, String language, String functionKind) {
+            String functionBody, String language, String functionKind, 
List<List<List<String>>> dependencies) {
         this.dataverse = dataverseName;
         this.name = functionName;
         this.params = params;
@@ -51,6 +53,13 @@ public class Function implements IMetadataEntity<Function> {
         this.language = language;
         this.kind = functionKind;
         this.arity = arity;
+        if (dependencies == null) {
+            this.dependencies = new ArrayList<>();
+            this.dependencies.add(new ArrayList<>());
+            this.dependencies.add(new ArrayList<>());
+        } else {
+            this.dependencies = dependencies;
+        }
     }
 
     public String getDataverseName() {
@@ -65,6 +74,10 @@ public class Function implements IMetadataEntity<Function> {
         return params;
     }
 
+    public List<List<List<String>>> getDependencies() {
+        return dependencies;
+    }
+
     public String getFunctionBody() {
         return body;
     }

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/50860b83/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entitytupletranslators/FunctionTupleTranslator.java
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entitytupletranslators/FunctionTupleTranslator.java
 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entitytupletranslators/FunctionTupleTranslator.java
index e15805e..273c78a 100644
--- 
a/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entitytupletranslators/FunctionTupleTranslator.java
+++ 
b/asterixdb/asterix-metadata/src/main/java/org/apache/asterix/metadata/entitytupletranslators/FunctionTupleTranslator.java
@@ -35,6 +35,7 @@ import org.apache.asterix.om.base.ARecord;
 import org.apache.asterix.om.base.AString;
 import org.apache.asterix.om.base.IACursor;
 import org.apache.asterix.om.types.AOrderedListType;
+import org.apache.asterix.om.types.BuiltinType;
 import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
 import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
@@ -56,7 +57,13 @@ public class FunctionTupleTranslator extends 
AbstractTupleTranslator<Function> {
     // Payload field containing serialized Function.
     public static final int FUNCTION_PAYLOAD_TUPLE_FIELD_INDEX = 3;
 
-    @SuppressWarnings("unchecked")
+    private transient OrderedListBuilder dependenciesListBuilder = new 
OrderedListBuilder();
+    private transient OrderedListBuilder dependencyListBuilder = new 
OrderedListBuilder();
+    private transient OrderedListBuilder dependencyNameListBuilder = new 
OrderedListBuilder();
+    private transient AOrderedListType stringList = new 
AOrderedListType(BuiltinType.ASTRING, null);
+    private transient AOrderedListType ListofLists =
+            new AOrderedListType(new AOrderedListType(BuiltinType.ASTRING, 
null), null);
+
     private ISerializerDeserializer<ARecord> recordSerDes =
             
SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(MetadataRecordTypes.FUNCTION_RECORDTYPE);
 
@@ -104,8 +111,33 @@ public class FunctionTupleTranslator extends 
AbstractTupleTranslator<Function> {
         String functionKind =
                 ((AString) 
functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_KIND_FIELD_INDEX))
                         .getStringValue();
+
+        IACursor dependenciesCursor = ((AOrderedList) functionRecord
+                
.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_DEPENDENCIES_FIELD_INDEX)).getCursor();
+        List<List<List<String>>> dependencies = new ArrayList<>();
+        AOrderedList dependencyList;
+        AOrderedList qualifiedList;
+        int i = 0;
+        while (dependenciesCursor.next()) {
+            dependencies.add(new ArrayList<>());
+            dependencyList = (AOrderedList) dependenciesCursor.get();
+            IACursor qualifiedDependencyCursor = dependencyList.getCursor();
+            int j = 0;
+            while (qualifiedDependencyCursor.next()) {
+                qualifiedList = (AOrderedList) qualifiedDependencyCursor.get();
+                IACursor qualifiedNameCursor = qualifiedList.getCursor();
+                dependencies.get(i).add(new ArrayList<>());
+                while (qualifiedNameCursor.next()) {
+                    dependencies.get(i).get(j).add(((AString) 
qualifiedNameCursor.get()).getStringValue());
+                }
+                j++;
+            }
+            i++;
+
+        }
+
         return new Function(dataverseName, functionName, 
Integer.parseInt(arity), params, returnType, definition,
-                language, functionKind);
+                language, functionKind, dependencies);
 
     }
 
@@ -185,6 +217,33 @@ public class FunctionTupleTranslator extends 
AbstractTupleTranslator<Function> {
         stringSerde.serialize(aString, fieldValue.getDataOutput());
         
recordBuilder.addField(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_KIND_FIELD_INDEX,
 fieldValue);
 
+        // write field 8
+        dependenciesListBuilder.reset((AOrderedListType) 
MetadataRecordTypes.FUNCTION_RECORDTYPE
+                
.getFieldTypes()[MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_DEPENDENCIES_FIELD_INDEX]);
+        List<List<List<String>>> dependenciesList = function.getDependencies();
+        for (List<List<String>> dependencies : dependenciesList) {
+            dependencyListBuilder.reset(ListofLists);
+            for (List<String> dependency : dependencies) {
+                dependencyNameListBuilder.reset(stringList);
+                for (String subName : dependency) {
+                    itemValue.reset();
+                    aString.setValue(subName);
+                    stringSerde.serialize(aString, itemValue.getDataOutput());
+                    dependencyNameListBuilder.addItem(itemValue);
+                }
+                itemValue.reset();
+                dependencyNameListBuilder.write(itemValue.getDataOutput(), 
true);
+                dependencyListBuilder.addItem(itemValue);
+
+            }
+            itemValue.reset();
+            dependencyListBuilder.write(itemValue.getDataOutput(), true);
+            dependenciesListBuilder.addItem(itemValue);
+        }
+        fieldValue.reset();
+        dependenciesListBuilder.write(fieldValue.getDataOutput(), true);
+        
recordBuilder.addField(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_DEPENDENCIES_FIELD_INDEX,
 fieldValue);
+
         // write record
         recordBuilder.write(tupleBuilder.getDataOutput(), true);
         tupleBuilder.addFieldEndOffset();

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