/*
  Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program 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; version 2
  of the License.

  This program 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 this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA

 */

package com.mysql.jdbc;

import java.io.InputStream;
import java.sql.SQLException;

/**
 * This interface contains methods that are considered the "vendor extension"
 * to the JDBC API for MySQL's implementation of java.sql.Statement.
 *
 * For those looking further into the driver implementation, it is not
 * an API that is used for plugability of implementations inside our driver
 * (which is why there are still references to StatementImpl throughout the
 * code).
 *
 * @version $Id: $
 *
 */
public interface Statement extends java.sql.Statement {

	/**
	 * Workaround for containers that 'check' for sane values of
	 * Statement.setFetchSize() so that applications can use
	 * the Java variant of libmysql's mysql_use_result() behavior.
	 *
	 * @throws SQLException
	 */
	public abstract void enableStreamingResults() throws SQLException;

	/**
	 * Resets this statements fetch size and result set type to the values
	 * they had before enableStreamingResults() was called.
	 *
	 * @throws SQLException
	 */
	public abstract void disableStreamingResults() throws SQLException;

	/**
	 * Sets an InputStream instance that will be used to send data
	 * to the MySQL server for a "LOAD DATA LOCAL INFILE" statement
	 * rather than a FileInputStream or URLInputStream that represents
	 * the path given as an argument to the statement.
	 *
	 * This stream will be read to completion upon execution of a
	 * "LOAD DATA LOCAL INFILE" statement, and will automatically
	 * be closed by the driver, so it needs to be reset
	 * before each call to execute*() that would cause the MySQL
	 * server to request data to fulfill the request for
	 * "LOAD DATA LOCAL INFILE".
	 *
	 * If this value is set to NULL, the driver will revert to using
	 * a FileInputStream or URLInputStream as required.
	 */
	public abstract void setLocalInfileInputStream(InputStream stream);

	/**
	 * Returns the InputStream instance that will be used to send
	 * data in response to a "LOAD DATA LOCAL INFILE" statement.
	 *
	 * This method returns NULL if no such stream has been set
	 * via setLocalInfileInputStream().
	 */
	public abstract InputStream getLocalInfileInputStream();

	public void setPingTarget(PingTarget pingTarget);

	public ExceptionInterceptor getExceptionInterceptor();
	
	/** 
	 * Callback for result set instances to remove them from the Set that 
	 * tracks them per-statement 
	 */
	 
	public abstract void removeOpenResultSet(ResultSetInternalMethods rs);
	
	/**
	 * Returns the number of open result sets for this statement.
	 * @return
	 */
	public abstract int getOpenResultSetCount();

	public void setHoldResultsOpenOverClose(boolean holdResultsOpenOverClose);
}