com.bigdata.rawstore.IBlock Maven / Gradle / Ivy

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package com.bigdata.rawstore;

import java.io.InputStream;

/**
 * An object that may be used to read or write a block from a store. In general,
 * an instance of this interface either supports read or write but not both.
 * 
 * @author Bryan Thompson
 * @version $Id$
 */
public interface IBlock {

    /**
     * The address of the block on the store.
     */
    public long getAddress();

    /**
     * The length of the block.
     */
    public int length();

    /**
     * The source from which the block's data may be read.
     * 
     * Note: It is important to close() this input stream.
     * 
     * @throws UnsupportedOperationException
     *             if read is not supported.
     */
    public InputStream inputStream();

    //        /**
    //         * The sink on which the block's data may be written.
    //         * 
    //         * Note: It is important to flush() and close() this output stream.
    //         * 
    //         * @throws UnsupportedOperationException
    //         *             if write is not supported.
    //         */
    //        public OutputStream outputStream(); 

}