| /* |
| * 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.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 org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Reference; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| @Component |
| 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()) { |
| //In multiplexing setups there can be multiple index nodes |
| 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 (count < 0 && 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; |
| } |
| |
| @Override |
| public String getIndexDefinitionDiff() { |
| return null; |
| } |
| } |
| } |