src/java.sql/share/classes/javax/sql/RowSetInternal.java

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package javax.sql;

import java.sql.*;

/**
 * The interface that a {@code RowSet} object implements in order to
 * present itself to a {@code RowSetReader} or {@code RowSetWriter}
 * object. The {@code RowSetInternal} 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} object's command.
   *
   * @return an array of the current parameter values for this {@code RowSet}
   *         object's command
   * @throws SQLException if a database access error occurs
   */
  Object[] getParams() throws SQLException;

  /**
   * Retrieves the {@code Connection} object that was passed to this
   * {@code RowSet} object.
   *
   * @return the {@code Connection} object passed to the rowset
   *      or {@code null} if none was passed
   * @throws SQLException if a database access error occurs
   */
  Connection getConnection() throws SQLException;

  /**
   * Sets the given {@code RowSetMetaData} object as the
   * {@code RowSetMetaData} object for this {@code RowSet}
   * object. The {@code RowSetReader} object associated with the rowset
   * will use {@code RowSetMetaData} methods to set the values giving
   * information about the rowset's columns.
   *
   * @param md the {@code RowSetMetaData} object that will be set with
   *        information about the rowset's columns
   *
   * @throws SQLException if a database access error occurs
   */
  void setMetaData(RowSetMetaData md) throws SQLException;

  /**
   * Retrieves a {@code ResultSet} object containing the original
   * value of this {@code RowSet} 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} are said to have an original value.
   *
   * @return the original value of the rowset
   * @throws SQLException if a database access error occurs
   */
  public ResultSet getOriginal() throws SQLException;

  /**
   * Retrieves a {@code ResultSet} 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}
   *         object
   * @throws 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;

}