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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.plugins.nodetype;
import static org.apache.jackrabbit.JcrConstants.JCR_MIXINTYPES;
import static org.apache.jackrabbit.JcrConstants.JCR_PRIMARYTYPE;
import static org.apache.jackrabbit.JcrConstants.JCR_SYSTEM;
import static org.apache.jackrabbit.oak.plugins.memory.EmptyNodeState.MISSING_NODE;
import static org.apache.jackrabbit.oak.plugins.nodetype.NodeTypeConstants.JCR_NODE_TYPES;
import java.util.Set;
import javax.jcr.RepositoryException;
import javax.jcr.nodetype.NoSuchNodeTypeException;
import javax.jcr.nodetype.NodeType;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;
import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.namepath.NamePathMapper;
import org.apache.jackrabbit.oak.plugins.tree.RootFactory;
import org.apache.jackrabbit.oak.spi.commit.CommitInfo;
import org.apache.jackrabbit.oak.spi.commit.Editor;
import org.apache.jackrabbit.oak.spi.commit.EditorDiff;
import org.apache.jackrabbit.oak.spi.commit.EditorProvider;
import org.apache.jackrabbit.oak.spi.commit.VisibleEditor;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Component
@Service(EditorProvider.class)
public class TypeEditorProvider implements EditorProvider {
private static final Logger LOG = LoggerFactory.getLogger(TypeEditorProvider.class);
private final boolean strict;
public TypeEditorProvider(boolean strict) {
this.strict = strict;
}
public TypeEditorProvider() {
this(true);
}
@Override
public Editor getRootEditor(
NodeState before, NodeState after, NodeBuilder builder,
CommitInfo info) throws CommitFailedException {
NodeState beforeTypes =
before.getChildNode(JCR_SYSTEM).getChildNode(JCR_NODE_TYPES);
NodeState afterTypes =
after.getChildNode(JCR_SYSTEM).getChildNode(JCR_NODE_TYPES);
String primary = after.getName(JCR_PRIMARYTYPE);
Iterable mixins = after.getNames(JCR_MIXINTYPES);
TypeRegistration registration = new TypeRegistration();
afterTypes.compareAgainstBaseState(beforeTypes, registration);
if (registration.isModified()) {
ReadOnlyNodeTypeManager ntBefore = ReadOnlyNodeTypeManager.getInstance(RootFactory.createReadOnlyRoot(before), NamePathMapper.DEFAULT);
ReadOnlyNodeTypeManager ntAfter = ReadOnlyNodeTypeManager.getInstance(RootFactory.createReadOnlyRoot(after), NamePathMapper.DEFAULT);
afterTypes = registration.apply(builder);
Set modifiedTypes =
registration.getModifiedTypes(beforeTypes);
if (!modifiedTypes.isEmpty()) {
boolean modified = false;
for (String t : modifiedTypes) {
boolean mod = !isTrivialChange(ntBefore, ntAfter, t);
modified = modified || mod;
}
if (!modified) {
LOG.info("Node type changes: " + modifiedTypes + " appear to be trivial, repository will not be scanned");
}
else {
long start = System.currentTimeMillis();
// Some node types were modified, so scan the repository
// to make sure that the modified definitions still apply.
Editor editor = new VisibleEditor(new TypeEditor(
strict, modifiedTypes, afterTypes,
primary, mixins, builder));
LOG.info("Node type changes: " + modifiedTypes + " appear not to be trivial, starting repository scan");
CommitFailedException exception =
EditorDiff.process(editor, MISSING_NODE, after);
LOG.info("Node type changes: " + modifiedTypes + "; repository scan took " + (System.currentTimeMillis() - start)
+ "ms" + (exception == null ? "" : "; failed with " + exception.getMessage()));
if (exception != null) {
throw exception;
}
}
}
}
return new VisibleEditor(new TypeEditor(
strict, null, afterTypes, primary, mixins, builder));
}
private boolean isTrivialChange(ReadOnlyNodeTypeManager ntBefore, ReadOnlyNodeTypeManager ntAfter, String nodeType) {
NodeType nb, na;
try {
nb = ntBefore.getNodeType(nodeType);
} catch (NoSuchNodeTypeException ex) {
LOG.info(nodeType + " not present in 'before' state");
return true;
} catch (RepositoryException ex) {
LOG.info("getting node type", ex);
return false;
}
try {
na = ntAfter.getNodeType(nodeType);
} catch (NoSuchNodeTypeException ex) {
LOG.info(nodeType + " was removed");
return false;
} catch (RepositoryException ex) {
LOG.info("getting node type", ex);
return false;
}
NodeTypeDefDiff diff = NodeTypeDefDiff.create(nb, na);
if (!diff.isModified()) {
LOG.info("Node type " + nodeType + " was not changed");
return true;
} else if (diff.isTrivial()) {
LOG.info("Node type change for " + nodeType + " appears to be trivial");
return true;
} else {
LOG.info("Node type change for " + nodeType + " requires repository scan: " + diff);
return false;
}
}
}
