io.uhndata.cards.versioning.LastModifiedEditorProvider Maven / Gradle / Ivy

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Records the date/time of most recent modification done to a node

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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 io.uhndata.cards.versioning;

import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.spi.commit.CommitInfo;
import org.apache.jackrabbit.oak.spi.commit.Editor;
import org.apache.jackrabbit.oak.spi.commit.EditorProvider;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.apache.sling.api.resource.ResourceResolver;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

import io.uhndata.cards.resolverProvider.ThreadResourceResolverProvider;

/**
 * A {@link EditorProvider} returning {@link LastModifiedEditor}.
 *
 * @version $Id: 55f17eda51dd64094207824c662a16db0247a09f $
 */
@Component(property = "service.ranking:Integer=70")
public class LastModifiedEditorProvider implements EditorProvider
{
    @Reference
    private ThreadResourceResolverProvider rrp;

    @Override
    public Editor getRootEditor(NodeState before, NodeState after, NodeBuilder builder, CommitInfo info)
        throws CommitFailedException
    {
        final ResourceResolver myResolver = this.rrp.getThreadResourceResolver();
        if (myResolver != null) {
            // Each LastModifiedEditor maintains a state, so a new instance must be returned each time
            return new LastModifiedEditor(builder, myResolver, null);
        }
        return null;
    }
}