/*
 * 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.hyracks.storage.am.lsm.common.impls;

import org.apache.hyracks.data.std.primitive.LongPointable;
import org.apache.hyracks.storage.am.lsm.common.api.ILSMComponent;
import org.apache.hyracks.storage.am.lsm.common.api.ILSMComponentFilter;

public abstract class AbstractLSMComponent implements ILSMComponent {
    // Finals
    protected final LongPointable pointable = LongPointable.FACTORY.createPointable();
    protected final ILSMComponentFilter filter;
    protected final AbstractLSMIndex lsmIndex;
    // Mutables
    protected volatile ComponentState state;
    protected int readerCount;

    public AbstractLSMComponent(AbstractLSMIndex lsmIndex, ILSMComponentFilter filter) {
        this.lsmIndex = lsmIndex;
        this.filter = filter;
        readerCount = 0;
    }

    @Override
    public ComponentState getState() {
        return state;
    }

    @Override
    public ILSMComponentFilter getLSMComponentFilter() {
        return filter;
    }

    @Override
    public final AbstractLSMIndex getLsmIndex() {
        return lsmIndex;
    }

    @Override
    public int getReaderCount() {
        return readerCount;
    }
}
