package it.cavallium.strangedb.database;

import java.io.IOException;
import java.nio.ByteBuffer;

public interface IBlocksIO {
	/**
	 * Allocate a block
	 * @param size block size
	 * @param data block data
	 * @return the block id
	 */
	long newBlock(int size, ByteBuffer data) throws IOException;

	/**
	 * Read a block
	 * @param blockId block id
	 * @return block data
	 */
	ByteBuffer readBlock(long blockId) throws IOException;

	/**
	 * Close file
	 */
	void close();
}