Block.java

package org.wonderdb.block;

import java.util.List;
import java.util.Stack;

import org.wonderdb.cache.Cacheable;
import org.wonderdb.types.BlockPtr;
import org.wonderdb.types.record.Record;

/*******************************************************************************
 *    Copyright 2013 Vilas Athavale
 *
 *    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 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.
 *******************************************************************************/

public interface Block extends Cacheable<BlockPtr, List<Record>> {
	BlockPtr getNext();
	BlockPtr getPrev();
	BlockPtr getParent(Stack<BlockPtr> stack);
	
	void setNext(BlockPtr n);
	void setPrev(BlockPtr p);
	void setParent(BlockPtr p);
	
	void writeLock();
	void writeUnlock();
	void readLock();
	void readUnlock();
	
	void setData(List<Record> records);

	int getResourceCount();
	void adjustResourceCount(int count);
}