/*
* 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.solr.index;
import java.io.Closeable;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.api.Type;
import org.apache.jackrabbit.oak.plugins.index.IndexEditor;
import org.apache.jackrabbit.oak.plugins.index.solr.OakSolrConfiguration;
import org.apache.jackrabbit.oak.plugins.index.solr.query.SolrQueryIndex;
import org.apache.jackrabbit.oak.spi.commit.Editor;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.apache.jackrabbit.oak.spi.state.NodeStateUtils;
import org.apache.jackrabbit.oak.spi.state.ReadOnlyBuilder;
import org.apache.solr.client.solrj.SolrServer;
import static org.apache.jackrabbit.JcrConstants.JCR_PRIMARYTYPE;
import static org.apache.jackrabbit.oak.commons.PathUtils.concat;
import static org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.EMPTY_NODE;
/**
* {@link IndexEditor} implementation that is responsible for keeping the
* {@link org.apache.jackrabbit.oak.plugins.index.solr.query.SolrQueryIndex} up to date
* <p/>
* This handles index updates by keeping a {@link Map} of <code>String</code>
* and {@link SolrIndexUpdate} for each path.
*
* @see org.apache.jackrabbit.oak.plugins.index.solr.query.SolrQueryIndex
* @see SolrIndexHook
*/
public class SolrIndexDiff implements IndexEditor, Closeable {
private final SolrIndexDiff parent;
private final NodeBuilder node;
private final String name;
private String path;
private final Map<String, SolrIndexUpdate> updates;
private SolrServer solrServer;
private OakSolrConfiguration configuration;
/**
* the root editor in charge of applying the updates
*/
private final boolean isRoot;
private SolrIndexDiff(SolrIndexDiff parent, NodeBuilder node, SolrServer solrServer,
String name, String path, Map<String, SolrIndexUpdate> updates, OakSolrConfiguration configuration, boolean isRoot) {
this.parent = parent;
this.node = node;
this.name = name;
this.path = path;
this.updates = updates;
this.solrServer = solrServer;
this.configuration = configuration;
this.isRoot = isRoot;
}
private SolrIndexDiff(SolrIndexDiff parent, SolrServer solrServer, String name) {
this(parent, getChildNode(parent.node, name), solrServer, name, null,
parent.updates, parent.configuration, false);
}
public SolrIndexDiff(NodeBuilder root, SolrServer solrServer, OakSolrConfiguration configuration) {
this(null, root, solrServer, null, "/", new HashMap<String, SolrIndexUpdate>(), configuration, true);
}
@Override
public void enter(NodeState before, NodeState after)
throws CommitFailedException {
// TODO : test properly on PDFs
if (node != null && node.hasChildNode("oak:index")) {
NodeBuilder index = node.child("oak:index");
for (String indexName : index.getChildNodeNames()) {
NodeBuilder child = index.child(indexName);
if (isIndexNode(child) && !this.updates.containsKey(getPath())) {
this.updates.put(getPath(), new SolrIndexUpdate(
getPath(), child, configuration));
}
}
}
if (node != null && name != null && !NodeStateUtils.isHidden(name)) {
for (SolrIndexUpdate update : updates.values()) {
update.insert(getPath(), node);
}
}
}
private static NodeBuilder getChildNode(NodeBuilder node, String name) {
if (node != null && node.hasChildNode(name)) {
return node.child(name);
} else {
return null;
}
}
public String getPath() {
if (path == null) {
path = concat(parent.getPath(), name);
}
return path;
}
private static boolean isIndexNode(NodeBuilder node) {
PropertyState ps = node.getProperty(JCR_PRIMARYTYPE);
boolean isNodeType = ps != null && !ps.isArray()
&& ps.getValue(Type.STRING).equals("oak:queryIndexDefinition");
if (!isNodeType) {
return false;
}
PropertyState type = node.getProperty("type");
boolean isIndexType = type != null && !type.isArray()
&& type.getValue(Type.STRING).equals(SolrQueryIndex.TYPE);
return isIndexType;
}
@Override
public void propertyAdded(PropertyState after) {
for (SolrIndexUpdate update : updates.values()) {
update.insert(getPath(), node);
}
}
@Override
public void propertyChanged(PropertyState before, PropertyState after) {
for (SolrIndexUpdate update : updates.values()) {
update.insert(getPath(), node);
}
}
@Override
public void propertyDeleted(PropertyState before) {
for (SolrIndexUpdate update : updates.values()) {
update.insert(getPath(), node);
}
}
@Override
public Editor childNodeAdded(String name, NodeState after) {
if (NodeStateUtils.isHidden(name)) {
return null;
}
for (SolrIndexUpdate update : updates.values()) {
update.insert(concat(getPath(), name), new ReadOnlyBuilder(after));
}
return childNodeChanged(name, EMPTY_NODE, after);
}
@Override
public Editor childNodeChanged(String name, NodeState before, NodeState after) {
if (NodeStateUtils.isHidden(name)) {
return null;
}
return new SolrIndexDiff(this, solrServer, name);
}
@Override
public Editor childNodeDeleted(String name, NodeState before) {
if (NodeStateUtils.isHidden(name)) {
return null;
}
for (SolrIndexUpdate update : updates.values()) {
update.remove(concat(getPath(), name));
}
return null;
}
@Override
public void leave(NodeState before, NodeState after)
throws CommitFailedException {
if(!isRoot){
return;
}
for (SolrIndexUpdate update : updates.values()) {
update.apply(solrServer);
}
}
@Override
public void close() throws IOException {
for (SolrIndexUpdate update : updates.values()) {
update.close();
}
updates.clear();
}
}