/*
* Copyright 2014-2015 the original author or authors
*
* Licensed under the Apache License, Version 2.0 (the “License”);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Created on 2015年4月10日
// $Id$
package com.wplatform.ddal.excutor;
import com.wplatform.ddal.message.DbException;
import com.wplatform.ddal.result.LocalResult;
import com.wplatform.ddal.result.ResultTarget;
/**
* @author <a href="mailto:jorgie.mail@gmail.com">jorgie li</a>
*/
public interface PreparedExecutor {
/**
* Execute the query.
*
* @param maxRows the maximum number of rows to return
* @return the result set
* @throws DbException if it is not a query
*/
LocalResult executeQuery(int maxRows);
/**
* Execute the query, writing the result to the target result.
*
* @param maxRows the maximum number of rows to return
* @param target the target result (null will return the result)
* @return the result set (if the target is not set).
*/
LocalResult executeQuery(int maxRows, ResultTarget target);
/**
* Execute the statement.
*
* @return the update count
* @throws DbException if it is a query
*/
int executeUpdate();
/**
* kill a currently running PreparedExecutor.
* This operation will cancel all opened JDBC statements
* and close all opened JDBC connections
*/
void kill();
}