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/**
* Derby - Class org.apache.derbyTesting.functionTests.tests.lang.Bug4356Test
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.derbyTesting.functionTests.tests.lang;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import junit.framework.Test;
import org.apache.derbyTesting.junit.BaseJDBCTestCase;
import org.apache.derbyTesting.junit.CleanDatabaseTestSetup;
import org.apache.derbyTesting.junit.JDBC;
import org.apache.derbyTesting.junit.TestConfiguration;
/**
* Demonstrate subselect behavior with prepared statement.
*/
public class Bug4356Test extends BaseJDBCTestCase {
/**
* Basic constructor.
*/
public Bug4356Test(String name) {
super(name);
}
/**
* Sets the auto commit to false.
*/
protected void initializeConnection(Connection conn) throws SQLException {
conn.setAutoCommit(false);
}
/**
* Returns the implemented tests.
*
* @return An instance of <code>Test</code> with the implemented tests to
* run.
*/
public static Test suite() {
return new CleanDatabaseTestSetup(TestConfiguration
.embeddedSuite(Bug4356Test.class)) {
protected void decorateSQL(Statement stmt) throws SQLException {
stmt.executeUpdate("CREATE TABLE T1 (a integer, b integer)");
stmt.executeUpdate("CREATE TABLE T2 (a integer)");
stmt.executeUpdate("INSERT INTO T2 VALUES(1)");
}
};
}
/**
* Bug only happens when autocommit is off.
*/
protected void setUp() throws Exception {
super.setUp();
}
/**
* Check fix for Bug4356 - Prepared statement parameter buffers are not cleared between calls
* to executeUpdate() in the same transaction.
* Using a prepared statement to insert data into a table using
* a sub select to get the data from a second table. The
* prepared statement doesn't seem to clear it's buffers between
* execute statements within the same transaction.
* @throws SQLException
*/
public void testBug4356() throws SQLException {
Statement stmt = createStatement();
ResultSet rs;
PreparedStatement ps = prepareStatement("INSERT INTO T1 VALUES (?,(select count(*) from t2 where a = ?)) ");
ps.setInt(1, 1);
ps.setInt(2, 1);
ps.executeUpdate();
ps.setInt(1, 2);
ps.setInt(2, 2);
ps.executeUpdate();
commit();
rs = stmt.executeQuery("SELECT * FROM T1");
JDBC.assertFullResultSet(rs,new String[][] {{"1","1"},
{"2","0"}});
rs.close();
stmt.close();
}
}
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