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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.api.java.tuple.Tuple2;
import org.apache.flink.runtime.state.gemini.engine.GRegionContext;
import org.apache.flink.runtime.state.gemini.engine.exceptions.GeminiRuntimeException;
import org.apache.flink.runtime.state.gemini.engine.memstore.GSValue;
import org.apache.flink.runtime.state.gemini.engine.page.bmap.BinaryValue;
import org.apache.flink.runtime.state.gemini.engine.page.bmap.GBinaryHashMap;
import org.apache.flink.runtime.state.gemini.engine.page.compress.GCompressAlgorithm;
import org.apache.flink.runtime.state.gemini.engine.rm.Allocator;
import org.apache.flink.runtime.state.gemini.engine.vm.HitRecord;

import java.util.Map;
import java.util.Set;

/**
 * DataPageAbstractSubPage.
 */
public abstract class DataPageAbstractSubPage implements DataPage {

	protected final HitRecord hitRecord = new HitRecord();

	//chainIndex is changable
	protected volatile short chainIndex = 0;

	@Override
	public abstract int getSize();

	@Override
	public abstract int getCheckSum();

	@Override
	public abstract GBinaryHashMap getGBinaryHashMap();

	@Override
	public abstract void retain();

	@Override
	public abstract void release();

	@Override
	public abstract void close();

	@Override
	public BinaryValue getBinaryValue(K key) {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public GSValue get(K key) {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public boolean contains(K key) {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public long getVersion() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public DataPageType getDataPageType() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public int getCount() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public Map> getPOJOMap() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public Set getPOJOSet() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public Tuple2 split(
		PageIndexContext indexContext, int curBucketNum, int curIndex, Allocator allocator, GCompressAlgorithm gCompressAlgorithm, GRegionContext gRegionContext) {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public long getCompactionCount() {
		throw new GeminiRuntimeException("Sub Page doesn't support this method");
	}

	@Override
	public void setChainIndex(int index) {
		this.chainIndex = (short) index;
	}

	@Override
	public int getChainIndex() {
		return this.chainIndex;
	}

	@Override
	public void addRequestCount(long tickTime, int requestCount) {
		hitRecord.addRequestCount(tickTime, requestCount);
	}

	@Override
	public double score(long tickTime) {
		return hitRecord.score(tickTime, getSize(), getChainIndex());
	}

	@Override
	public long getRequestCount(long tickTime) {
		return hitRecord.getRequestCount(tickTime);
	}
}