/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.jdbc;
import java.sql.ResultSet;
import java.sql.Statement;
/**
* A callback for non-blocking statement result processing.
* {@link Statement#close()} must still be called to release
* statement resources.
*
* Statement methods, such as cancel, are perfectly valid
* even when using a callback.
*/
public interface StatementCallback {
/**
* Process the current row of the {@link ResultSet}.
* Any call that retrieves non-lob values from the current row
* will be performed without blocking on more data from sources.
* Calls outside of the current row, such as next(), may block.
* @param rs
* @throws Exception
*/
void onRow(Statement s, ResultSet rs) throws Exception;
/**
* Called when an exception occurs. No further rows will
* be processed by this callback.
* @param e
*/
void onException(Statement s, Exception e) throws Exception;
/**
* Called when processing has completed normally.
* @param rs
*/
void onComplete(Statement s) throws Exception;
}