/*
* 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.itemsave;
import static com.google.common.collect.Lists.newArrayList;
import static org.apache.jackrabbit.oak.commons.PathUtils.elements;
import java.util.List;
import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.spi.commit.FailingValidator;
import org.apache.jackrabbit.oak.spi.commit.SubtreeExcludingValidator;
import org.apache.jackrabbit.oak.spi.commit.Validator;
/**
* This validator checks that all changes are contained within the subtree
* rooted at a given path.
*/
class ItemSaveValidator extends SubtreeExcludingValidator {
/**
* Name of the property whose {@link #propertyChanged(org.apache.jackrabbit.oak.api.PropertyState, org.apache.jackrabbit.oak.api.PropertyState)} to
* ignore or {@code null} if no property should be ignored.
*/
private final String ignorePropertyChange;
/**
* Create a new validator that only throws a {@link CommitFailedException} whenever
* there are changes not contained in the subtree rooted at {@code path}.
* @param path
*/
public ItemSaveValidator(String path) {
this(new FailingValidator(CommitFailedException.UNSUPPORTED, 0,
"Failed to save subtree at " + path + ". There are " +
"transient modifications outside that subtree."),
newArrayList(elements(path)));
}
private ItemSaveValidator(Validator validator, List<String> path) {
super(validator, path);
// Ignore property changes if this is the head of the path.
// This allows for calling save on a changed property.
ignorePropertyChange = path.size() == 1 ? path.get(0) : null;
}
@Override
public void propertyChanged(PropertyState before, PropertyState after)
throws CommitFailedException {
if (!before.getName().equals(ignorePropertyChange)) {
super.propertyChanged(before, after);
}
}
@Override
protected SubtreeExcludingValidator createValidator(
Validator validator, final List<String> path) {
return new ItemSaveValidator(validator, path);
}
}