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/* Derby - Class org.apache.derbyTesting.functionTests.tests.jdbcapi.SetTransactionIsolationTest 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.jdbcapi; 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.BaseTestSuite; import org.apache.derbyTesting.junit.CleanDatabaseTestSetup; import org.apache.derbyTesting.junit.DatabasePropertyTestSetup; import org.apache.derbyTesting.junit.RuntimeStatisticsParser; import org.apache.derbyTesting.junit.SQLUtilities; import org.apache.derbyTesting.junit.TestConfiguration; /** * Test setTransactionIsolation * */ public class SetTransactionIsolationTest extends BaseJDBCTestCase { /** * @param name */ public SetTransactionIsolationTest(String name) { super(name); } public static int[] isoLevels = { Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_REPEATABLE_READ, Connection.TRANSACTION_READ_COMMITTED, Connection.TRANSACTION_SERIALIZABLE }; /** * test setting of isolation levels with and without lock timeouts * @throws SQLException */ public void testIsolation() throws SQLException { Connection conn = getConnection(); Connection conn2 = openDefaultConnection(); conn.setAutoCommit(false); // test with no lock timeouts for (int i = 0; i < isoLevels.length; i++) { checkIsolationLevelNoTimeout(conn, isoLevels[i]); } // Now do an insert to create lock timeout Statement stmt = conn.createStatement(); stmt.executeUpdate("insert into t1 values(4,'Fourth Hello')"); for (int i = 0; i < isoLevels.length; i++) checkIsolationLevelTimeout(conn2, isoLevels[i]); stmt.close(); // rollback to cleanup locks from insert conn.rollback(); } /** * Check setTransactioIsolation and queries with timeout expected in * all cases except READ_UNCOMMITTED * * @param conn Connection to use * @param isoLevel Isolation level to test from Connection.TRANSACTION_* * @throws SQLException */ private void checkIsolationLevelTimeout(Connection conn, int isoLevel) throws SQLException { RuntimeStatisticsParser rsp = null; conn.setTransactionIsolation(isoLevel); try { rsp = SQLUtilities.executeAndGetRuntimeStatistics(conn, "select * from t1"); // only READ_UNCOMMITTED should make it through assertEquals(Connection.TRANSACTION_READ_UNCOMMITTED, rsp .getIsolationLevel()); } catch (SQLException se) { if (isoLevel != Connection.TRANSACTION_READ_UNCOMMITTED) assertSQLState("expected lock timeout", "40XL1", se); } try { rsp = SQLUtilities.executeAndGetRuntimeStatistics(conn, "insert into t1copy (select * from t1)"); ; // only READ_UNCOMMITTED should make it through assertEquals(Connection.TRANSACTION_READ_UNCOMMITTED, rsp .getIsolationLevel()); } catch (SQLException se) { if (isoLevel != Connection.TRANSACTION_READ_UNCOMMITTED) assertSQLState("expected lock timeout", "40XL1", se); } } /** * Test setTransactionIsolation and queries with no timeout expected * @param conn * @param isoLevel * @throws SQLException */ private void checkIsolationLevelNoTimeout(Connection conn, int isoLevel) throws SQLException { conn.setTransactionIsolation(isoLevel); RuntimeStatisticsParser rsp = SQLUtilities .executeAndGetRuntimeStatistics(conn, "select * from t1"); assertEquals(isoLevel, rsp.getIsolationLevel()); rsp = SQLUtilities.executeAndGetRuntimeStatistics(conn, "insert into t1copy (select * from t1)"); ; assertEquals(isoLevel, rsp.getIsolationLevel()); } /** * setTransactionIsolation commits? */ public void testSetTransactionIsolationCommitRollback() throws SQLException { Connection conn = getConnection(); conn.rollback(); conn.setAutoCommit(false); conn .setTransactionIsolation(java.sql.Connection.TRANSACTION_SERIALIZABLE); Statement s = conn.createStatement(); s.executeUpdate("delete from t3"); s.executeUpdate("insert into t3 values(1)"); conn.commit(); s.executeUpdate("insert into t3 values(2)"); conn .setTransactionIsolation(java.sql.Connection.TRANSACTION_SERIALIZABLE); conn.rollback(); ResultSet rs = s.executeQuery("select count(*) from t3"); rs.next(); int count = rs.getInt(1); assertEquals(1, count); rs.close(); s.close();