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/**
* Derby - Class org.apache.derbyTesting.functionTests.tests.lang.Bug5052rtsTest
*
* 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.CallableStatement;
import java.sql.Connection;
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.TestConfiguration;
/**
* testing gathering of runtime statistics for for the resultsets/statements not
* closed by the usee, but get closed when garbage collector collects such
* objects and closes them by calling the finalize.
*
*/
public class Bug5052rtsTest extends BaseJDBCTestCase {
/**
* Basic constructor.
*/
public Bug5052rtsTest(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(Bug5052rtsTest.class)) {
protected void decorateSQL(Statement stmt) throws SQLException {
stmt
.execute("create table tab1 (COL1 int, COL2 smallint, COL3 real)");
stmt.executeUpdate("insert into tab1 values(1, 2, 3.1)");
stmt.executeUpdate("insert into tab1 values(2, 2, 3.1)");
}
};
}
/**
* Make sure NullPointerException does not occur if
* RuntimeStatistics is used and ResultSet is not closed by the user
*
* @throws SQLException
*/
public void testBug5052() throws SQLException {
Statement stmt0 = createStatement();
Statement stmt1 = createStatement();
Statement stmt2 = createStatement();
CallableStatement cs;
ResultSet rs;
ResultSet rs1;
/* case1: Setting runtime statistics on just before result set close. */
rs = stmt0.executeQuery("select * from tab1"); // opens the result set
while (rs.next()) {
// System.out.println(rs.getString(1));
}
// set the runtime statistics on now.
cs = prepareCall(
"CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
cs.setInt(1, 1);
cs.execute();
cs.close();
rs.close();
cs = prepareCall(
"CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
cs.setInt(1, 0);
cs.execute();
cs.close();
/* case2: Statement/Resultset getting closed by the Garbage collector. */
rs = stmt1.executeQuery("select * from tab1"); // opens the result set
while (rs.next()) {
// System.out.println(rs.getString(1));
}
// set the runtime statistics on now.
cs = prepareCall(
"CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(?)");
cs.setInt(1, 1);
cs.execute();
cs.close();
rs1 = stmt2.executeQuery("select count(*) from tab1"); // opens the
// result set
while (rs1.next()) {
// System.out.println(rs1.getString(1));
}
for (int i = 0; i < 3; i++) {
System.gc();
System.runFinalization();
// sleep for sometime to make sure garbage collector kicked in
// and collected the result set object.
try {
Thread.sleep(3000);
} catch (InterruptedException ie) {
fail("Unexpected interruption!");
}
}
commit(); // This should have failed before we fix 5052
}
}
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