/*
* @(#)RowSetInternal.java 1.10 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.sql;
import java.sql.*;
/**
* The interface that a <code>RowSet</code> object implements in order to
* present itself to a <code>RowSetReader</code> or <code>RowSetWriter</code>
* object. The <code>RowSetInternal</code> interface contains
* methods that let the reader or writer access and modify the internal
* state of the rowset.
*
* @since 1.4
*/
public interface RowSetInternal {
/**
* Retrieves the parameters that have been set for this
* <code>RowSet</code> object's command.
*
* @return an array of the current parameter values for this <code>RowSet</code>
* object's command
* @exception SQLException if a database access error occurs
*/
Object[] getParams() throws SQLException;
/**
* Retrieves the <code>Connection</code> object that was passed to this
* <code>RowSet</code> object.
*
* @return the <code>Connection</code> object passed to the rowset
* or <code>null</code> if none was passed
* @exception SQLException if a database access error occurs
*/
Connection getConnection() throws SQLException;
/**
* Sets the given <code>RowSetMetaData</code> object as the
* <code>RowSetMetaData</code> object for this <code>RowSet</code>
* object. The <code>RowSetReader</code> object associated with the rowset
* will use <code>RowSetMetaData</code> methods to set the values giving
* information about the rowset's columns.
*
* @param md the <code>RowSetMetaData</code> object that will be set with
* information about the rowset's columns
*
* @exception SQLException if a database access error occurs
*/
void setMetaData(RowSetMetaData md) throws SQLException;
/**
* Retrieves a <code>ResultSet</code> object containing the original
* value of this <code>RowSet</code> object.
* <P>
* The cursor is positioned before the first row in the result set.
* Only rows contained in the result set returned by the method
* <code>getOriginal</code> are said to have an original value.
*
* @return the original value of the rowset
* @exception SQLException if a database access error occurs
*/
public ResultSet getOriginal() throws SQLException;
/**
* Retrieves a <code>ResultSet</code> object containing the original value
* of the current row only. If the current row has no original value,
* an empty result set is returned. If there is no current row,
* an exception is thrown.
*
* @return the original value of the current row as a <code>ResultSet</code>
* object
* @exception SQLException if a database access error occurs or this method
* is called while the cursor is on the insert row, before the
* first row, or after the last row
*/
public ResultSet getOriginalRow() throws SQLException;
}