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The Adobe Experience Manager SDK
/*
* 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.jcr;
import static java.util.Objects.requireNonNull;
import static org.apache.jackrabbit.guava.common.base.Preconditions.checkState;
import static org.apache.jackrabbit.guava.common.collect.Sets.newLinkedHashSet;
import static org.apache.jackrabbit.oak.plugins.commit.JcrConflictHandler.createJcrConflictHandler;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.ScheduledExecutorService;
import javax.jcr.Repository;
import org.apache.jackrabbit.oak.Oak;
import org.apache.jackrabbit.oak.Oak.OakDefaultComponents;
import org.apache.jackrabbit.oak.api.ContentRepository;
import org.apache.jackrabbit.oak.api.jmx.SessionMBean;
import org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl;
import org.apache.jackrabbit.oak.plugins.index.IndexEditorProvider;
import org.apache.jackrabbit.oak.plugins.observation.CommitRateLimiter;
import org.apache.jackrabbit.oak.spi.commit.BackgroundObserver;
import org.apache.jackrabbit.oak.spi.commit.CommitHook;
import org.apache.jackrabbit.oak.spi.commit.CompositeConflictHandler;
import org.apache.jackrabbit.oak.spi.commit.ConflictHandlers;
import org.apache.jackrabbit.oak.spi.commit.Editor;
import org.apache.jackrabbit.oak.spi.commit.EditorProvider;
import org.apache.jackrabbit.oak.spi.commit.Observer;
import org.apache.jackrabbit.oak.spi.commit.PartialConflictHandler;
import org.apache.jackrabbit.oak.spi.commit.ThreeWayConflictHandler;
import org.apache.jackrabbit.oak.spi.lifecycle.RepositoryInitializer;
import org.apache.jackrabbit.oak.spi.query.QueryIndexProvider;
import org.apache.jackrabbit.oak.spi.query.QueryLimits;
import org.apache.jackrabbit.oak.spi.security.SecurityProvider;
import org.apache.jackrabbit.oak.spi.state.Clusterable;
import org.apache.jackrabbit.oak.spi.state.NodeStore;
import org.apache.jackrabbit.oak.spi.whiteboard.Whiteboard;
import org.jetbrains.annotations.NotNull;
/**
* Builder class which encapsulates the details of building a JCR
* {@link Repository} backed by an Oak {@link ContentRepository} instance
*
* The backing {@linkplain ContentRepository} instance will be constructed with
* reasonable defaults and additional components can be registered by calling
* the {@code with} methods. Note that it is not possible to remove components
* once registered.
*
* The Jcr builder is a lazy initializer, to have a working repository make sure
* you call {@link Jcr#createContentRepository()} or
* {@link Jcr#createRepository()}.
*/
public class Jcr {
public static final int DEFAULT_OBSERVATION_QUEUE_LENGTH = BackgroundObserver.DEFAULT_QUEUE_SIZE;
private final Oak oak;
private final Set repositoryInitializers = newLinkedHashSet();
private final Set queryIndexProviders = newLinkedHashSet();
private final Set commitHooks = newLinkedHashSet();
private final Set indexEditorProviders = newLinkedHashSet();
private final Set editorProviders = newLinkedHashSet();
private final Set editors = newLinkedHashSet();
private final Set observers = newLinkedHashSet();
private final CompositeConflictHandler conflictHandler = createJcrConflictHandler();
private SecurityProvider securityProvider;
private CommitRateLimiter commitRateLimiter;
private ScheduledExecutorService scheduledExecutor;
private Executor executor;
private QueryLimits queryEngineSettings;
private String defaultWorkspaceName;
private Whiteboard whiteboard;
private int observationQueueLength = DEFAULT_OBSERVATION_QUEUE_LENGTH;
private boolean fastQueryResultSize;
private boolean createSessionMBeans = true; // by default every (long-living) session will register an MBean
private ContentRepository contentRepository;
private Repository repository;
private Clusterable clusterable;
public Jcr(Oak oak, boolean initialize) {
this.oak = oak;
if (initialize) {
OakDefaultComponents defs = new OakDefaultComponents();
with(defs.securityProvider());
for (CommitHook ch : defs.commitHooks()) {
with(ch);
}
for (RepositoryInitializer ri : defs.repositoryInitializers()) {
with(ri);
}
for (EditorProvider ep : defs.editorProviders()) {
with(ep);
}
for (IndexEditorProvider iep : defs.indexEditorProviders()) {
with(iep);
}
for (QueryIndexProvider qip : defs.queryIndexProviders()) {
with(qip);
}
}
}
public Jcr(Oak oak) {
this(oak, true);
}
public Jcr() {
this(new Oak());
}
public Jcr(NodeStore store) {
this(new Oak(store));
}
@NotNull
public Jcr with(@NotNull Clusterable c) {
ensureRepositoryIsNotCreated();
this.clusterable = requireNonNull(c);
return this;
}
@NotNull
public final Jcr with(@NotNull RepositoryInitializer initializer) {
ensureRepositoryIsNotCreated();
repositoryInitializers.add(requireNonNull(initializer));
return this;
}
public Jcr withAtomicCounter() {
ensureRepositoryIsNotCreated();
oak.withAtomicCounter();
return this;
}
private void ensureRepositoryIsNotCreated() {
checkState(repository == null && contentRepository == null,
"Repository was already created");
}
@NotNull
public final Jcr with(@NotNull QueryIndexProvider provider) {
ensureRepositoryIsNotCreated();
queryIndexProviders.add(requireNonNull(provider));
return this;
}
@NotNull
public final Jcr with(@NotNull IndexEditorProvider indexEditorProvider) {
ensureRepositoryIsNotCreated();
indexEditorProviders.add(requireNonNull(indexEditorProvider));
return this;
}
@NotNull
public final Jcr with(@NotNull CommitHook hook) {
ensureRepositoryIsNotCreated();
commitHooks.add(requireNonNull(hook));
return this;
}
@NotNull
public final Jcr with(@NotNull EditorProvider provider) {
ensureRepositoryIsNotCreated();
editorProviders.add(requireNonNull(provider));
return this;
}
@NotNull
public final Jcr with(@NotNull Editor editor) {
ensureRepositoryIsNotCreated();
editors.add(requireNonNull(editor));
return this;
}
@NotNull
public final Jcr with(@NotNull SecurityProvider securityProvider) {
ensureRepositoryIsNotCreated();
this.securityProvider = requireNonNull(securityProvider);
return this;
}
/**
* @deprecated Use {@link #with(ThreeWayConflictHandler)} instead
*/
@Deprecated
@NotNull
public final Jcr with(@NotNull PartialConflictHandler conflictHandler) {
return with(ConflictHandlers.wrap(conflictHandler));
}
@NotNull
public final Jcr with(@NotNull ThreeWayConflictHandler conflictHandler) {
ensureRepositoryIsNotCreated();
this.conflictHandler.addHandler(requireNonNull(conflictHandler));
return this;
}
@NotNull
public final Jcr with(@NotNull ScheduledExecutorService executor) {
ensureRepositoryIsNotCreated();
this.scheduledExecutor = requireNonNull(executor);
return this;
}
@NotNull
public final Jcr with(@NotNull Executor executor) {
ensureRepositoryIsNotCreated();
this.executor = requireNonNull(executor);
return this;
}
@NotNull
public final Jcr with(@NotNull Observer observer) {
ensureRepositoryIsNotCreated();
observers.add(requireNonNull(observer));
return this;
}
/**
* @deprecated Use {@link #withAsyncIndexing(String, long)} instead
*/
@NotNull
@Deprecated
public Jcr withAsyncIndexing() {
ensureRepositoryIsNotCreated();
oak.withAsyncIndexing();
return this;
}
@NotNull
public Jcr withAsyncIndexing(@NotNull String name, long delayInSeconds) {
ensureRepositoryIsNotCreated();
oak.withAsyncIndexing(name, delayInSeconds);
return this;
}
@NotNull
public Jcr withObservationQueueLength(int observationQueueLength) {
ensureRepositoryIsNotCreated();
this.observationQueueLength = observationQueueLength;
return this;
}
@NotNull
public Jcr with(@NotNull CommitRateLimiter commitRateLimiter) {
ensureRepositoryIsNotCreated();
this.commitRateLimiter = requireNonNull(commitRateLimiter);
return this;
}
@NotNull
public Jcr with(@NotNull QueryLimits qs) {
ensureRepositoryIsNotCreated();
this.queryEngineSettings = requireNonNull(qs);
return this;
}
@NotNull
public Jcr withFastQueryResultSize(boolean fastQueryResultSize) {
ensureRepositoryIsNotCreated();
this.fastQueryResultSize = fastQueryResultSize;
return this;
}
@NotNull
public Jcr with(@NotNull String defaultWorkspaceName) {
ensureRepositoryIsNotCreated();
this.defaultWorkspaceName = requireNonNull(defaultWorkspaceName);
return this;
}
@NotNull
public Jcr with(@NotNull Whiteboard whiteboard) {
ensureRepositoryIsNotCreated();
this.whiteboard = requireNonNull(whiteboard);
return this;
}
/**
* Disables registration of {@link SessionMBean} for every open Session in the repository.
* This gets rid of some overhead for cases where MBeans are not leveraged.
* @return the Jcr object
* @since 1.46
*/
@NotNull
public Jcr withoutSessionMBeans() {
createSessionMBeans = false;
return this;
}
private void setUpOak() {
// whiteboard
if (whiteboard != null) {
oak.with(whiteboard);
}
// repository initializers
for (RepositoryInitializer repositoryInitializer : repositoryInitializers) {
oak.with(repositoryInitializer);
}
// query index providers
for (QueryIndexProvider queryIndexProvider : queryIndexProviders) {
oak.with(queryIndexProvider);
}
// commit hooks
for (CommitHook commitHook : commitHooks) {
oak.with(commitHook);
}
// conflict handlers
oak.with(conflictHandler);
// index editor providers
for (IndexEditorProvider indexEditorProvider : indexEditorProviders) {
oak.with(indexEditorProvider);
}
// editors
for (Editor editor : editors) {
oak.with(editor);
}
// editor providers
for (EditorProvider editorProvider : editorProviders) {
oak.with(editorProvider);
}
// securityProvider
oak.with(securityProvider);
// executors
if (scheduledExecutor != null) {
oak.with(scheduledExecutor);
}
if (executor != null) {
oak.with(executor);
}
// observers
for (Observer observer : observers) {
oak.with(observer);
}
// commit rate limiter
if (commitRateLimiter != null) {
oak.with(commitRateLimiter);
}
// query engine settings
if (queryEngineSettings != null) {
oak.with(queryEngineSettings);
}
// default workspace name
if (defaultWorkspaceName != null) {
oak.with(defaultWorkspaceName);
}
if (clusterable != null) {
oak.with(clusterable);
}
}
@NotNull
public ContentRepository createContentRepository() {
if (contentRepository == null) {
setUpOak();
contentRepository = oak.createContentRepository();
}
return contentRepository;
}
@NotNull
public Repository createRepository() {
if (repository == null) {
repository = new RepositoryImpl(
createContentRepository(),
oak.getWhiteboard(),
securityProvider,
observationQueueLength,
commitRateLimiter,
fastQueryResultSize,
createSessionMBeans);
}
return repository;
}
}
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