hyracks/hyracks-storage-am-common/src/main/java/edu/uci/ics/hyracks/storage/am/common/dataflow/IndexRegistry.java

/*
 * Copyright 2009-2013 by The Regents of the University of California
 * Licensed 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 from
 * 
 *     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 edu.uci.ics.hyracks.storage.am.common.dataflow;

import java.util.HashMap;

public class IndexRegistry<IndexType> {

    private HashMap<Integer, IndexType> map = new HashMap<Integer, IndexType>();

    public IndexType get(int indexId) {
        return map.get(indexId);
    }

    public void register(int indexId, IndexType index) {
        map.put(indexId, index);
    }

    public void unregister(int indexId) {
        map.remove(indexId);
    }

    public int size() {
        return map.size();
    }
}