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-/* Statement.java -- Interface for executing SQL statements.
- Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.sql;
-
-/**
- * This interface provides a mechanism for executing SQL statements.
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public interface Statement
-{
- int CLOSE_CURRENT_RESULT = 1;
- int KEEP_CURRENT_RESULT = 2;
- int CLOSE_ALL_RESULTS = 3;
- int SUCCESS_NO_INFO = -2;
- int EXECUTE_FAILED = -3;
- int RETURN_GENERATED_KEYS = 1;
- int NO_GENERATED_KEYS = 2;
-
- /**
- * This method executes the specified SQL SELECT statement and returns a
- * (possibly empty) <code>ResultSet</code> with the results of the query.
- *
- * @param sql The SQL statement to execute.
- * @return The result set of the SQL statement.
- * @exception SQLException If an error occurs.
- */
- ResultSet executeQuery(String sql) throws SQLException;
-
- /**
- * This method executes the specified SQL INSERT, UPDATE, or DELETE statement
- * and returns the number of rows affected, which may be 0.
- *
- * @param sql The SQL statement to execute.
- * @return The number of rows affected by the SQL statement.
- * @exception SQLException If an error occurs.
- */
- int executeUpdate(String sql) throws SQLException;
-
- /**
- * This method closes the statement and frees any associated resources.
- *
- * @exception SQLException If an error occurs.
- */
- void close() throws SQLException;
-
- /**
- * This method returns the maximum length of any column value in bytes.
- *
- * @return The maximum length of any column value in bytes.
- * @exception SQLException If an error occurs.
- */
- int getMaxFieldSize() throws SQLException;
-
- /**
- * This method sets the limit for the maximum length of any column in bytes.
- *
- * @param maxsize The new maximum length of any column in bytes.
- * @exception SQLException If an error occurs.
- */
- void setMaxFieldSize(int max) throws SQLException;
-
- /**
- * This method returns the maximum possible number of rows in a result set.
- *
- * @return The maximum possible number of rows in a result set.
- * @exception SQLException If an error occurs.
- */
- int getMaxRows() throws SQLException;
-
- /**
- * This method sets the maximum number of rows that can be present in a
- * result set.
- *
- * @param maxrows The maximum possible number of rows in a result set.
- * @exception SQLException If an error occurs.
- */
- void setMaxRows(int max) throws SQLException;
-
- /**
- * This method sets the local escape processing mode on or off. The
- * default value is on.
- *
- * @param escape <code>true</code> to enable local escape processing,
- * <code>false</code> to disable it.
- * @exception SQLException If an error occurs.
- */
- void setEscapeProcessing(boolean enable) throws SQLException;
-
- /**
- * The method returns the number of seconds a statement may be in process
- * before timing out. A value of 0 means there is no timeout.
- *
- * @return The SQL statement timeout in seconds.
- * @exception SQLException If an error occurs.
- */
- int getQueryTimeout() throws SQLException;
-
- /**
- * This method sets the number of seconds a statement may be in process
- * before timing out. A value of 0 means there is no timeout.
- *
- * @param timeout The new SQL statement timeout value.
- * @exception SQLException If an error occurs.
- */
- void setQueryTimeout(int seconds) throws SQLException;
-
- /**
- * This method cancels an outstanding statement, if the database supports
- * that operation.
- *
- * @exception SQLException If an error occurs.
- */
- void cancel() throws SQLException;
-
- /**
- * This method returns the first SQL warning attached to this statement.
- * Subsequent warnings will be chained to this one.
- *
- * @return The first SQL warning for this statement.
- * @exception SQLException If an error occurs.
- */
- SQLWarning getWarnings() throws SQLException;
-
- /**
- * This method clears any SQL warnings that have been attached to this
- * statement.
- *
- * @exception SQLException If an error occurs.
- */
- void clearWarnings() throws SQLException;
-
- /**
- * This method sets the cursor name that will be used by the result set.
- *
- * @param name The cursor name to use for this statement.
- * @exception SQLException If an error occurs.
- */
- void setCursorName(String name) throws SQLException;
-
- /**
- * This method executes an arbitrary SQL statement of any time. The
- * methods <code>getResultSet</code>, <code>getMoreResults</code> and
- * <code>getUpdateCount</code> retrieve the results.
- *
- * @return <code>true</code> if a result set was returned, <code>false</code>
- * if an update count was returned.
- * @exception SQLException If an error occurs.
- */
- boolean execute(String sql) throws SQLException;
-
- /**
- * This method returns the result set of the SQL statement that was
- * executed. This should be called only once per result set returned.
- *
- * @return The result set of the query, or <code>null</code> if there was
- * no result set (for example, if the statement was an UPDATE).
- * @exception SQLException If an error occurs.
- * @see execute
- */
- ResultSet getResultSet() throws SQLException;
-
- /**
- * This method returns the update count of the SQL statement that was
- * executed. This should be called only once per executed SQL statement.
- *
- * @return The update count of the query, or -1 if there was no update
- * count (for example, if the statement was a SELECT).
- * @exception SQLException If an error occurs.
- * @see execute
- */
- int getUpdateCount() throws SQLException;
-
- /**
- * This method advances the result set pointer to the next result set,
- * which can then be retrieved using <code>getResultSet</code>
- *
- * @return <code>true</code> if there is another result set,
- * <code>false</code> otherwise (for example, the next result is an
- * update count).
- * @exception SQLException If an error occurs.
- * @see execute
- */
- boolean getMoreResults() throws SQLException;
-
- /**
- * This method informs the driver which direction the result set will
- * be accessed in.
- *
- * @param direction The direction the result set will be accessed in (?????)
- * @exception SQLException If an error occurs.
- */
- void setFetchDirection(int direction) throws SQLException;
-
- /**
- * This method returns the current direction that the driver thinks the
- * result set will be accessed int.
- *
- * @return The direction the result set will be accessed in (????)
- * @exception SQLException If an error occurs.
- */
- int getFetchDirection() throws SQLException;
-
- /**
- * This method informs the driver how many rows it should fetch from the
- * database at a time.
- *
- * @param numrows The number of rows the driver should fetch at a time
- * to populate the result set.
- * @exception SQLException If an error occurs.
- */
- void setFetchSize(int rows) throws SQLException;
-
- /**
- * This method returns the number of rows the driver believes should be
- * fetched from the database at a time.
- *
- * @return The number of rows that will be fetched from the database at a time.
- * @exception SQLException If an error occurs.
- */
- int getFetchSize() throws SQLException;
-
- /**
- * This method returns the concurrency type of the result set for this
- * statement. This will be one of the concurrency types defined in
- * <code>ResultSet</code>.
- *
- * @return The concurrency type of the result set for this statement.
- * @exception SQLException If an error occurs.
- * @see ResultSet
- */
- int getResultSetConcurrency() throws SQLException;
-
- /**
- * This method returns the result set type for this statement. This will
- * be one of the result set types defined in <code>ResultSet</code>.
- *
- * @return The result set type for this statement.
- * @exception SQLException If an error occurs.
- * @see ResultSet
- */
- int getResultSetType() throws SQLException;
-
- /**
- * This method adds a SQL statement to a SQL batch. A driver is not
- * required to implement this method.
- *
- * @param sql The sql statement to add to the batch.
- * @exception SQLException If an error occurs.
- */
- void addBatch(String sql) throws SQLException;
-
- /**
- * This method clears out any SQL statements that have been populated in
- * the current batch. A driver is not required to implement this method.
- *
- * @exception SQLException If an error occurs.
- */
- void clearBatch() throws SQLException;
-
- /**
- * This method executes the SQL batch and returns an array of update
- * counts - one for each SQL statement in the batch - ordered in the same
- * order the statements were added to the batch. A driver is not required
- * to implement this method.
- *
- * @return An array of update counts for this batch.
- * @exception SQLException If an error occurs.
- */
- int[] executeBatch() throws SQLException;
-
- /**
- * This method returns the <code>Connection</code> instance that was
- * used to create this object.
- *
- * @return The connection used to create this object.
- * @exception SQLException If an error occurs.
- */
- Connection getConnection() throws SQLException;
-
- /**
- * @since 1.4
- */
- boolean getMoreResults(int current) throws SQLException;
-
- /**
- * @since 1.4
- */
- ResultSet getGeneratedKeys() throws SQLException;
-
- /**
- * @since 1.4
- */
- int executeUpdate(String sql, int autoGeneratedKeys)
- throws SQLException;
-
- /**
- * @since 1.4
- */
- int executeUpdate(String sql, int[] columnIndexes)
- throws SQLException;
-
- /**
- * @since 1.4
- */
- int executeUpdate(String sql, String[] columnNames)
- throws SQLException;
-
- /**
- * @since 1.4
- */
- boolean execute(String sql, int autoGeneratedKeys)
- throws SQLException;
-
- /**
- * @since 1.4
- */
- boolean execute(String sql, int[] columnIndexes) throws SQLException;
-
- /**
- * @since 1.4
- */
- boolean execute(String sql, String[] columnNames)
- throws SQLException;
-
- /**
- * @since 1.4
- */
- int getResultSetHoldability() throws SQLException;
-}