/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
*   $PostgreSQL: pgjdbc/org/postgresql/jdbc3/AbstractJdbc3Blob.java,v 1.13 2008/01/08 06:56:29 jurka Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.jdbc3;

import java.sql.SQLException;

public abstract class AbstractJdbc3Blob extends org.postgresql.jdbc2.AbstractJdbc2Blob
{

    public AbstractJdbc3Blob(org.postgresql.core.BaseConnection conn, long oid) throws SQLException
    {
        super(conn, oid);
    }

    /**
     * Writes the given array of bytes to the <code>BLOB</code> value that
     * this <code>Blob</code> object represents, starting at position
     * <code>pos</code>, and returns the number of bytes written.
     *
     * @param pos the position in the <code>BLOB</code> object at which
     *    to start writing
     * @param bytes the array of bytes to be written to the <code>BLOB</code>
     *    value that this <code>Blob</code> object represents
     * @return the number of bytes written
     * @exception SQLException if there is an error accessing the
     *     <code>BLOB</code> value
     * @see #getBytes
     * @since 1.4
     */
    public synchronized int setBytes(long pos, byte[] bytes) throws SQLException
    {
        return setBytes(pos, bytes, 0, bytes.length);
    }

    

   /**
     * Writes all or part of the given <code>byte</code> array to the
     * <code>BLOB</code> value that this <code>Blob</code> object represents
     * and returns the number of bytes written.
     * Writing starts at position <code>pos</code> in the <code>BLOB</code>
     * value; <code>len</code> bytes from the given byte array are written.
     *
     * @param pos the position in the <code>BLOB</code> object at which
     *    to start writing
     * @param bytes the array of bytes to be written to this <code>BLOB</code>
     *    object
     * @param offset the offset into the array <code>bytes</code> at which
     *    to start reading the bytes to be set
     * @param len the number of bytes to be written to the <code>BLOB</code>
     *    value from the array of bytes <code>bytes</code>
     * @return the number of bytes written
     * @exception SQLException if there is an error accessing the
     *     <code>BLOB</code> value
     * @see #getBytes
     * @since 1.4
     */
    public synchronized int setBytes(long pos, byte[] bytes, int offset, int len) throws SQLException
    {
        assertPosition(pos);
        lo.seek((int) (pos-1));
        lo.write(bytes, offset, len);
        return len;
    }

}