org.apache.flink.runtime.state.gemini.engine.page.DataPageSortedSubPageImpl 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.flink.runtime.state.gemini.engine.page;

import org.apache.flink.runtime.state.gemini.engine.page.bmap.GBinaryHashMap;
import org.apache.flink.runtime.state.gemini.engine.page.bmap.GBinarySortedMap;

/**
 * The class DataPageSortedSubPageImpl is just for boxing the GBinarySortedMap of sub map into DataPage. By this
 * way, we can put the GBuffer address of sub map GBinarySortedMap into PageAddress[] of GBufferAddressMapping and
 * PageAddressCompositeImpl.
 */
public class DataPageSortedSubPageImpl extends DataPageAbstractSubPage {

	private GBinarySortedMap gBinarySortedMap;

	public DataPageSortedSubPageImpl(GBinarySortedMap gBinarySortedMap) {
		this.gBinarySortedMap = gBinarySortedMap;
		if (gBinarySortedMap.getGBinaryHashMap() != null && gBinarySortedMap.getGBinaryHashMap().getGByteBuffer() != null) {
			gBinarySortedMap.getGBinaryHashMap().getGByteBuffer().setWaitSeqId();
		}
	}

	@Override
	public int getSize() {
		return gBinarySortedMap.bytesSize();
	}

	@Override
	public int getCheckSum() {
		return gBinarySortedMap.getGBinaryHashMap().getOriginChecksum();
	}

	@Override
	public GBinaryHashMap getGBinaryHashMap() {
		return gBinarySortedMap.getGBinaryHashMap();
	}

	@Override
	public void retain() {
		if (gBinarySortedMap != null) {
			gBinarySortedMap.retain();
		}
	}

	@Override
	public void release() {
		if (gBinarySortedMap != null) {
			gBinarySortedMap.release();
		}
	}

	@Override
	public int refCnt() {
		if (gBinarySortedMap == null) {
			return 0;
		}
		return gBinarySortedMap.refCnt();
	}

	@Override
	public void close() {
		release();
	}
}