org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardIndexProvider Maven / Gradle / Ivy

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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.spi.whiteboard;

import java.util.List;

import javax.annotation.Nonnull;

import org.apache.jackrabbit.oak.spi.query.CompositeQueryIndexProvider;
import org.apache.jackrabbit.oak.spi.query.QueryIndex;
import org.apache.jackrabbit.oak.spi.query.QueryIndexProvider;
import org.apache.jackrabbit.oak.spi.state.NodeState;

/**
 * Dynamic {@link QueryIndexProvider} based on the available
 * whiteboard services.
 */
public class WhiteboardIndexProvider
        extends AbstractServiceTracker
        implements QueryIndexProvider {

    public WhiteboardIndexProvider() {
        super(QueryIndexProvider.class);
    }

    @Override @Nonnull
    public List getQueryIndexes(NodeState nodeState) {
        QueryIndexProvider composite =
                CompositeQueryIndexProvider.compose(getServices());
        return composite.getQueryIndexes(nodeState);
    }

}