/*
 * 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 javax.annotation.CheckForNull;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;
import org.apache.jackrabbit.oak.commons.PathUtils;
import org.apache.jackrabbit.oak.spi.commit.CommitInfo;
import org.apache.jackrabbit.oak.spi.commit.EditorProvider;
import org.apache.jackrabbit.oak.spi.commit.Validator;
import org.apache.jackrabbit.oak.spi.commit.ValidatorProvider;
import org.apache.jackrabbit.oak.spi.state.NodeState;

/**
 * This validator checks that all changes are contained within the subtree
 * rooted at a given path.
 */
@Component
@Service(EditorProvider.class)
public class ItemSaveValidatorProvider extends ValidatorProvider {

    @Override  @CheckForNull
    protected Validator getRootValidator(
            NodeState before, NodeState after, CommitInfo info) {
        String path = info.getPath();
        if (PathUtils.denotesRoot(path)) {
            return null; // no need to check saves of the whole transient space
        } else {
            return new ItemSaveValidator(path);
        }
    }

}
