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/*
* 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;
import java.io.IOException;
import java.io.InputStream;
import javax.annotation.Nonnull;
import static org.apache.jackrabbit.oak.api.Type.NAME;
import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.INDEX_DEFINITIONS_NODE_TYPE;
import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.TYPE_PROPERTY_NAME;
import static org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.EMPTY_NODE;
import static org.apache.jackrabbit.oak.plugins.memory.ModifiedNodeState.squeeze;
import static org.apache.jackrabbit.oak.plugins.version.VersionConstants.REP_VERSIONSTORAGE;
import com.google.common.collect.ImmutableList;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.api.Root;
import org.apache.jackrabbit.oak.api.Type;
import org.apache.jackrabbit.oak.plugins.document.bundlor.BundlingConfigInitializer;
import org.apache.jackrabbit.oak.plugins.index.IndexConstants;
import org.apache.jackrabbit.oak.plugins.index.IndexUtils;
import org.apache.jackrabbit.oak.plugins.index.counter.NodeCounterEditorProvider;
import org.apache.jackrabbit.oak.plugins.memory.MemoryNodeStore;
import org.apache.jackrabbit.oak.plugins.name.NamespaceEditorProvider;
import org.apache.jackrabbit.oak.plugins.name.Namespaces;
import org.apache.jackrabbit.oak.plugins.nodetype.NodeTypeConstants;
import org.apache.jackrabbit.oak.plugins.nodetype.TypeEditorProvider;
import org.apache.jackrabbit.oak.plugins.nodetype.write.NodeTypeRegistry;
import org.apache.jackrabbit.oak.plugins.tree.RootFactory;
import org.apache.jackrabbit.oak.plugins.version.VersionConstants;
import org.apache.jackrabbit.oak.spi.commit.CompositeEditorProvider;
import org.apache.jackrabbit.oak.spi.commit.EditorHook;
import org.apache.jackrabbit.oak.spi.lifecycle.RepositoryInitializer;
import org.apache.jackrabbit.oak.spi.state.ApplyDiff;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.apache.jackrabbit.oak.spi.state.NodeStore;
/**
* {@code InitialContent} implements a {@link RepositoryInitializer} the creates
* the initial JCR/Oak repository structure. This includes creating
*
*
* - the root node
* - jcr:system node and it subtree
* - version storage
* - activities
* - built-in node types
* - built-in namespaces
* - some basic index definitions required for a functional JCR repository
*
*/
public class InitialContent implements RepositoryInitializer, NodeTypeConstants {
public static final NodeState INITIAL_CONTENT = createInitialContent();
private static NodeState createInitialContent() {
NodeBuilder builder = EMPTY_NODE.builder();
new InitialContent().initialize(builder);
return squeeze(builder.getNodeState());
}
/**
* Whether to pre-populate the version store with intermediate nodes.
*/
private boolean prePopulateVS = false;
@Override
public void initialize(@Nonnull NodeBuilder builder) {
builder.setProperty(JCR_PRIMARYTYPE, NT_REP_ROOT, Type.NAME);
if (!builder.hasChildNode(JCR_SYSTEM)) {
NodeBuilder system = builder.child(JCR_SYSTEM);
system.setProperty(JCR_PRIMARYTYPE, NT_REP_SYSTEM, Type.NAME);
system.child(JCR_VERSIONSTORAGE)
.setProperty(JCR_PRIMARYTYPE, REP_VERSIONSTORAGE, Type.NAME);
system.child(JCR_NODE_TYPES)
.setProperty(JCR_PRIMARYTYPE, NT_REP_NODE_TYPES, Type.NAME);
system.child(VersionConstants.JCR_ACTIVITIES)
.setProperty(JCR_PRIMARYTYPE, VersionConstants.REP_ACTIVITIES, Type.NAME);
Namespaces.setupNamespaces(system);
}
BundlingConfigInitializer.INSTANCE.initialize(builder);
NodeBuilder versionStorage = builder.child(JCR_SYSTEM)
.child(JCR_VERSIONSTORAGE);
if (prePopulateVS && !isInitialized(versionStorage)) {
createIntermediateNodes(versionStorage);
}
if (!builder.hasChildNode(IndexConstants.INDEX_DEFINITIONS_NAME)) {
NodeBuilder index = IndexUtils.getOrCreateOakIndex(builder);
NodeBuilder uuid = IndexUtils.createIndexDefinition(index, "uuid", true, true,
ImmutableList.of(JCR_UUID), null);
uuid.setProperty("info",
"Oak index for UUID lookup (direct lookup of nodes with the mixin 'mix:referenceable').");
NodeBuilder nodetype = IndexUtils.createIndexDefinition(index, "nodetype", true, false,
ImmutableList.of(JCR_PRIMARYTYPE, JCR_MIXINTYPES), null);
nodetype.setProperty("info",
"Oak index for queries with node type, and possibly path restrictions, " +
"for example \"/jcr:root/content//element(*, mix:language)\".");
IndexUtils.createReferenceIndex(index);
index.child("counter")
.setProperty(JCR_PRIMARYTYPE, INDEX_DEFINITIONS_NODE_TYPE, NAME)
.setProperty(TYPE_PROPERTY_NAME, NodeCounterEditorProvider.TYPE)
.setProperty(IndexConstants.ASYNC_PROPERTY_NAME,
IndexConstants.ASYNC_PROPERTY_NAME)
.setProperty("info", "Oak index that allows to estimate " +
"how many nodes are stored below a given path, " +
"to decide whether traversing or using an index is faster.");
}
// squeeze node state before it is passed to store (OAK-2411)
NodeState base = squeeze(builder.getNodeState());
NodeStore store = new MemoryNodeStore(base);
registerBuiltIn(RootFactory.createSystemRoot(
store, new EditorHook(new CompositeEditorProvider(
new NamespaceEditorProvider(),
new TypeEditorProvider())), null, null, null));
NodeState target = store.getRoot();
target.compareAgainstBaseState(base, new ApplyDiff(builder));
}
/**
* Instructs the initializer to pre-populate the version store with
* intermediate nodes.
*
* @return this instance.
*/
public InitialContent withPrePopulatedVersionStore() {
this.prePopulateVS = true;
return this;
}
//--------------------------< internal >------------------------------------
private boolean isInitialized(NodeBuilder versionStorage) {
PropertyState init = versionStorage.getProperty(":initialized");
return init != null && init.getValue(Type.LONG) > 0;
}
private void createIntermediateNodes(NodeBuilder versionStorage) {
String fmt = "%02x";
versionStorage.setProperty(":initialized", 1);
for (int i = 0; i < 0xff; i++) {
NodeBuilder c = storageChild(versionStorage, String.format(fmt, i));
for (int j = 0; j < 0xff; j++) {
storageChild(c, String.format(fmt, j));
}
}
}
private NodeBuilder storageChild(NodeBuilder node, String name) {
NodeBuilder c = node.child(name);
if (!c.hasProperty(JCR_PRIMARYTYPE)) {
c.setProperty(JCR_PRIMARYTYPE, REP_VERSIONSTORAGE, Type.NAME);
}
return c;
}
/**
* Registers built in node types using the given {@link Root}.
*
* @param root the {@link Root} instance.
*/
private static void registerBuiltIn(final Root root) {
try {
InputStream stream = InitialContent.class.getResourceAsStream("builtin_nodetypes.cnd");
try {
NodeTypeRegistry.register(root, stream, "built-in node types");
} finally {
stream.close();
}
} catch (IOException e) {
throw new IllegalStateException("Unable to read built-in node types", e);
}
}
}
