Author: chetanm
Date: Fri May 12 06:10:44 2017
New Revision: 1794926

URL: http://svn.apache.org/viewvc?rev=1794926&view=rev
Log:
OAK-6216 - Property IndexInfoProvider implementation

Added:
    
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java
   (with props)
    
jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java
   (with props)

Added: 
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java
URL: 
http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java?rev=1794926&view=auto
==============================================================================
--- 
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java
 (added)
+++ 
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java
 Fri May 12 06:10:44 2017
@@ -0,0 +1,145 @@
+/*
+ * 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.jackrabbit.oak.plugins.index.property;
+
+import java.io.IOException;
+
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.Service;
+import org.apache.jackrabbit.oak.plugins.index.IndexConstants;
+import org.apache.jackrabbit.oak.plugins.index.IndexInfo;
+import org.apache.jackrabbit.oak.plugins.index.IndexInfoProvider;
+import org.apache.jackrabbit.oak.plugins.index.counter.ApproximateCounter;
+import org.apache.jackrabbit.oak.spi.state.ChildNodeEntry;
+import org.apache.jackrabbit.oak.spi.state.NodeState;
+import org.apache.jackrabbit.oak.spi.state.NodeStateUtils;
+import org.apache.jackrabbit.oak.spi.state.NodeStore;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+@Component
+@Service
+public class PropertyIndexInfoProvider implements IndexInfoProvider {
+
+    @Reference
+    private NodeStore nodeStore;
+
+    @SuppressWarnings("unused")
+    public PropertyIndexInfoProvider() {
+        //For DS
+    }
+
+    public PropertyIndexInfoProvider(NodeStore nodeStore) {
+        this.nodeStore = nodeStore;
+    }
+
+    @Override
+    public String getType() {
+        return PropertyIndexEditorProvider.TYPE;
+    }
+
+    @Override
+    public IndexInfo getInfo(String indexPath) throws IOException {
+        NodeState idxState = NodeStateUtils.getNode(nodeStore.getRoot(), 
indexPath);
+
+        
checkArgument(PropertyIndexEditorProvider.TYPE.equals(idxState.getString(IndexConstants.TYPE_PROPERTY_NAME)),
+                "Index definition at [%s] is not of type 'property'", 
indexPath);
+        PropertyIndexInfo info = new PropertyIndexInfo(indexPath);
+        computeCountEstimate(info, idxState);
+        return info;
+    }
+
+    private void computeCountEstimate(PropertyIndexInfo info, NodeState 
idxState) {
+        long count = -1;
+
+        for (ChildNodeEntry cne : idxState.getChildNodeEntries()) {
+            if (NodeStateUtils.isHidden(cne.getName())) {
+                NodeState indexData = cne.getNodeState();
+                long estimate = ApproximateCounter.getCountSync(indexData);
+                if (estimate > 0) {
+                    if (count < 0) {
+                        count = 0;
+                    }
+                    count += estimate;
+
+                } else if (indexData.getChildNodeCount(1) == 0) {
+                    //If we cannot get estimate then at least try to see if 
any index data is there or not
+                    count = 0;
+                }
+            }
+        }
+        info.estimatedCount = count;
+    }
+
+    @Override
+    public boolean isValid(String indexPath) throws IOException {
+        return true;
+    }
+
+    private static class PropertyIndexInfo implements IndexInfo {
+        private final String indexPath;
+        long estimatedCount = -1;
+
+        public PropertyIndexInfo(String indexPath) {
+            this.indexPath = indexPath;
+        }
+
+        @Override
+        public String getIndexPath() {
+            return indexPath;
+        }
+
+        @Override
+        public String getType() {
+            return PropertyIndexEditorProvider.TYPE;
+        }
+
+        @Override
+        public String getAsyncLaneName() {
+            return null;
+        }
+
+        @Override
+        public long getLastUpdatedTime() {
+            return -2;
+        }
+
+        @Override
+        public long getIndexedUpToTime() {
+            return 0;
+        }
+
+        @Override
+        public long getEstimatedEntryCount() {
+            return estimatedCount;
+        }
+
+        @Override
+        public long getSizeInBytes() {
+            return -1;
+        }
+
+        @Override
+        public boolean hasIndexDefinitionChangedWithoutReindexing() {
+            return false;
+        }
+    }
+}

Propchange: 
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProvider.java
------------------------------------------------------------------------------
    svn:eol-style = native

Added: 
jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java
URL: 
http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java?rev=1794926&view=auto
==============================================================================
--- 
jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java
 (added)
+++ 
jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java
 Fri May 12 06:10:44 2017
@@ -0,0 +1,72 @@
+/*
+ * 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.jackrabbit.oak.plugins.index.property;
+
+import com.google.common.collect.ImmutableSet;
+import org.apache.jackrabbit.oak.InitialContent;
+import org.apache.jackrabbit.oak.api.CommitFailedException;
+import org.apache.jackrabbit.oak.plugins.index.IndexInfo;
+import org.apache.jackrabbit.oak.plugins.index.IndexUpdateProvider;
+import org.apache.jackrabbit.oak.plugins.memory.MemoryNodeStore;
+import org.apache.jackrabbit.oak.spi.commit.CommitHook;
+import org.apache.jackrabbit.oak.spi.commit.CommitInfo;
+import org.apache.jackrabbit.oak.spi.commit.EditorHook;
+import org.apache.jackrabbit.oak.spi.commit.EmptyHook;
+import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
+import org.apache.jackrabbit.oak.spi.state.NodeStore;
+import org.junit.Before;
+import org.junit.Test;
+
+import static 
org.apache.jackrabbit.oak.plugins.index.IndexConstants.INDEX_DEFINITIONS_NAME;
+import static 
org.apache.jackrabbit.oak.plugins.index.IndexUtils.createIndexDefinition;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class PropertyIndexInfoProviderTest {
+    private static final CommitHook HOOK = new EditorHook(
+            new IndexUpdateProvider(new PropertyIndexEditorProvider()));
+
+    private NodeStore store = new MemoryNodeStore();
+
+    private PropertyIndexInfoProvider infoProvider = new 
PropertyIndexInfoProvider(store);
+
+    @Before
+    public void setUp() throws CommitFailedException {
+        NodeBuilder builder = store.getRoot().builder();
+        new InitialContent().initialize(builder);
+        store.merge(builder, EmptyHook.INSTANCE, CommitInfo.EMPTY);
+    }
+
+    @Test
+    public void emptyIndexEstimate() throws Exception{
+        NodeBuilder builder = store.getRoot().builder();
+        NodeBuilder index = 
createIndexDefinition(builder.child(INDEX_DEFINITIONS_NAME), "foo",
+                true, false, ImmutableSet.of("foo"), null);
+        store.merge(builder, HOOK, CommitInfo.EMPTY);
+
+        IndexInfo info = infoProvider.getInfo("/oak:index/foo");
+        assertNotNull(info);
+
+        assertEquals("/oak:index/foo", info.getIndexPath());
+        assertEquals("property", info.getType());
+        assertEquals(-2, info.getLastUpdatedTime());
+        assertEquals(0, info.getEstimatedEntryCount());
+    }
+}
\ No newline at end of file

Propchange: 
jackrabbit/oak/trunk/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/index/property/PropertyIndexInfoProviderTest.java
------------------------------------------------------------------------------
    svn:eol-style = native


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