statement.java

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     *
     * @since 1.4
     */
    int EXECUTE_FAILED = -3;

    /**
     * The constant indicating that generated keys should be made 
     * available for retrieval.
     *
     * @since 1.4
     */
    int RETURN_GENERATED_KEYS = 1;

    /**
     * The constant indicating that generated keys should not be made 
     * available for retrieval.
     *
     * @since 1.4
     */
    int NO_GENERATED_KEYS = 2;

    /**
     * Moves to this <code>Statement</code> object's next result, deals with
     * any current <code>ResultSet</code> object(s) according  to the instructions
     * specified by the given flag, and returns
     * <code>true</code> if the next result is a <code>ResultSet</code> object.
     *
     * <P>There are no more results when the following is true:
     * <PRE>
     *     // stmt is a Statement object
     *     ((stmt.getMoreResults() == false) && (stmt.getUpdateCount() == -1))
     * </PRE>
     *
     * @param current one of the following <code>Statement</code>
     *        constants indicating what should happen to current 
     *        <code>ResultSet</code> objects obtained using the method
     *        <code>getResultSet</code>:
     *        <code>Statement.CLOSE_CURRENT_RESULT</code>, 
     *        <code>Statement.KEEP_CURRENT_RESULT</code>, or
     *        <code>Statement.CLOSE_ALL_RESULTS</code>
     * @return <code>true</code> if the next result is a <code>ResultSet</code> 
     *         object; <code>false</code> if it is an update count or there are no 
     *         more results
     * @exception SQLException if a database access error occurs or the argument
	 *         supplied is not one of the following:
     *        <code>Statement.CLOSE_CURRENT_RESULT</code>, 
     *        <code>Statement.KEEP_CURRENT_RESULT</code>, or
     *        <code>Statement.CLOSE_ALL_RESULTS</code>
     * @since 1.4
     * @see #execute
     */
    boolean getMoreResults(int current) throws SQLException;

    /**
     * Retrieves any auto-generated keys created as a result of executing this
     * <code>Statement</code> object. If this <code>Statement</code> object did 
     * not generate any keys, an empty <code>ResultSet</code>
     * object is returned.
     *
     * @return a <code>ResultSet</code> object containing the auto-generated key(s) 
     *         generated by the execution of this <code>Statement</code> object
     * @exception SQLException if a database access error occurs
     * @since 1.4
     */
    ResultSet getGeneratedKeys() throws SQLException;

    /**
     * Executes the given SQL statement and signals the driver with the
     * given flag about whether the
     * auto-generated keys produced by this <code>Statement</code> object
     * should be made available for retrieval. 
     *
     * @param sql must be an SQL <code>INSERT</code>, <code>UPDATE</code> or
     *        <code>DELETE</code> statement or an SQL statement that 
     *        returns nothing
     * @param autoGeneratedKeys a flag indicating whether auto-generated keys
     *        should be made available for retrieval;
     *         one of the following constants:
     *         <code>Statement.RETURN_GENERATED_KEYS</code>
     *         <code>Statement.NO_GENERATED_KEYS</code>
     * @return either the row count for <code>INSERT</code>, <code>UPDATE</code>
     *         or <code>DELETE</code> statements, or <code>0</code> for SQL 
     *         statements that return nothing
     * @exception SQLException if a database access error occurs, the given
     *            SQL statement returns a <code>ResultSet</code> object, or
     *            the given constant is not one of those allowed
     * @since 1.4
     */
    int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException;

    /**
     * Executes the given SQL statement and signals the driver that the
     * auto-generated keys indicated in the given array should be made available
     * for retrieval.  The driver will ignore the array if the SQL statement
     * is not an <code>INSERT</code> statement.
     *
     * @param sql an SQL <code>INSERT</code>, <code>UPDATE</code> or
     *        <code>DELETE</code> statement or an SQL statement that returns nothing,
     *        such as an SQL DDL statement
     * @param columnIndexes an array of column indexes indicating the columns
     *        that should be returned from the inserted row
     * @return either the row count for <code>INSERT</code>, <code>UPDATE</code>,
     *         or <code>DELETE</code> statements, or 0 for SQL statements 
     *         that return nothing
     * @exception SQLException if a database access error occurs, the SQL
     *            statement returns a <code>ResultSet</code> object, or the
	 *            second argument supplied to this method is not an <code>int</code> array
	 *            whose elements are valid column indexes 
     * @since 1.4
     */
    int executeUpdate(String sql, int columnIndexes[]) throws SQLException;

    /**
     * Executes the given SQL statement and signals the driver that the
     * auto-generated keys indicated in the given array should be made available
     * for retrieval.  The driver will ignore the array if the SQL statement
     * is not an <code>INSERT</code> statement.
     *
     * @param sql an SQL <code>INSERT</code>, <code>UPDATE</code> or
     *        <code>DELETE</code> statement or an SQL statement that returns nothing
     * @param columnNames an array of the names of the columns that should be 
     *        returned from the inserted row
     * @return either the row count for <code>INSERT</code>, <code>UPDATE</code>,
     *         or <code>DELETE</code> statements, or 0 for SQL statements 
     *         that return nothing
     * @exception SQLException if a database access error occurs, the SQL
     *            statement returns a <code>ResultSet</code> object, or the
	 *            second argument supplied to this method is not a <code>String</code> array
     *            whose elements are valid column names
     *
     * @since 1.4
     */
    int executeUpdate(String sql, String columnNames[]) throws SQLException;

    /**
     * Executes the given SQL statement, which may return multiple results,
     * and signals the driver that any
     * auto-generated keys should be made available
     * for retrieval.  The driver will ignore this signal if the SQL statement
     * is not an <code>INSERT</code> statement.
     * <P>
     * In some (uncommon) situations, a single SQL statement may return
     * multiple result sets and/or update counts.  Normally you can ignore
     * this unless you are (1) executing a stored procedure that you know may
     * return multiple results or (2) you are dynamically executing an
     * unknown SQL string.  
     * <P>
     * The <code>execute</code> method executes an SQL statement and indicates the
     * form of the first result.  You must then use the methods 
     * <code>getResultSet</code> or <code>getUpdateCount</code>
     * to retrieve the result, and <code>getMoreResults</code> to
     * move to any subsequent result(s).
     *
     * @param sql any SQL statement
     * @param autoGeneratedKeys a constant indicating whether auto-generated 
     *        keys should be made available for retrieval using the method
     *        <code>getGeneratedKeys</code>; one of the following constants:
     *        <code>Statement.RETURN_GENERATED_KEYS</code> or
     *	      <code>Statement.NO_GENERATED_KEYS</code>
     * @return <code>true</code> if the first result is a <code>ResultSet</code>
     *         object; <code>false</code> if it is an update count or there are
     *         no results
     * @exception SQLException if a database access error occurs or the second 
	 *         parameter supplied to this method is not 
     *         <code>Statement.RETURN_GENERATED_KEYS</code> or
	 *         <code>Statement.NO_GENERATED_KEYS</code>.
     * @see #getResultSet
     * @see #getUpdateCount
     * @see #getMoreResults
     * @see #getGeneratedKeys
     *
     * @since 1.4 
     */
    boolean execute(String sql, int autoGeneratedKeys) throws SQLException;

    /**
     * Executes the given SQL statement, which may return multiple results,
     * and signals the driver that the
     * auto-generated keys indicated in the given array should be made available
     * for retrieval.  This array contains the indexes of the columns in the 
     * target table that contain the auto-generated keys that should be made
     * available. The driver will ignore the array if the given SQL statement
     * is not an <code>INSERT</code> statement.
     * <P>
     * Under some (uncommon) situations, a single SQL statement may return
     * multiple result sets and/or update counts.  Normally you can ignore
     * this unless you are (1) executing a stored procedure that you know may
     * return multiple results or (2) you are dynamically executing an
     * unknown SQL string.  
     * <P>
     * The <code>execute</code> method executes an SQL statement and indicates the
     * form of the first result.  You must then use the methods 
     * <code>getResultSet</code> or <code>getUpdateCount</code>
     * to retrieve the result, and <code>getMoreResults</code> to
     * move to any subsequent result(s).
     *
     * @param sql any SQL statement
     * @param columnIndexes an array of the indexes of the columns in the 
     *        inserted row that should be  made available for retrieval by a
     *        call to the method <code>getGeneratedKeys</code>
     * @return <code>true</code> if the first result is a <code>ResultSet</code> 
     *         object; <code>false</code> if it is an update count or there 
     *         are no results
     * @exception SQLException if a database access error occurs or the 
     *            elements in the <code>int</code> array passed to this method
     *            are not valid column indexes
     * @see #getResultSet
     * @see #getUpdateCount
     * @see #getMoreResults
     *
     * @since 1.4
     */
    boolean execute(String sql, int columnIndexes[]) throws SQLException;

    /**
     * Executes the given SQL statement, which may return multiple results,
     * and signals the driver that the
     * auto-generated keys indicated in the given array should be made available
     * for retrieval. This array contains the names of the columns in the 
     * target table that contain the auto-generated keys that should be made
     * available. The driver will ignore the array if the given SQL statement
     * is not an <code>INSERT</code> statement.
     * <P>
     * In some (uncommon) situations, a single SQL statement may return
     * multiple result sets and/or update counts.  Normally you can ignore
     * this unless you are (1) executing a stored procedure that you know may
     * return multiple results or (2) you are dynamically executing an
     * unknown SQL string.  
     * <P>
     * The <code>execute</code> method executes an SQL statement and indicates the
     * form of the first result.  You must then use the methods 
     * <code>getResultSet</code> or <code>getUpdateCount</code>
     * to retrieve the result, and <code>getMoreResults</code> to
     * move to any subsequent result(s).
     *
     * @param sql any SQL statement
     * @param columnNames an array of the names of the columns in the inserted
     *        row that should be made available for retrieval by a call to the
     *        method <code>getGeneratedKeys</code>
     * @return <code>true</code> if the next result is a <code>ResultSet</code> 
     *         object; <code>false</code> if it is an update count or there 
     *         are no more results
     * @exception SQLException if a database access error occurs or the 
	 *          elements of the <code>String</code> array passed to this
     *          method are not valid column names
     * @see #getResultSet
     * @see #getUpdateCount
     * @see #getMoreResults
     * @see #getGeneratedKeys
     *
     * @since 1.4 
     */
    boolean execute(String sql, String columnNames[]) throws SQLException;

   /**
     * Retrieves the result set holdability for <code>ResultSet</code> objects
     * generated by this <code>Statement</code> object.
     *
     * @return either <code>ResultSet.HOLD_CURSORS_OVER_COMMIT</code> or
     *         <code>ResultSet.CLOSE_CURSORS_AT_COMMIT</code>
     * @exception SQLException if a database access error occurs
     *
     * @since 1.4
     */
    int getResultSetHoldability() throws SQLException;

}