Source Code Cross Referenced for setTransactionIsolation.java in  » Database-DBMS » db-derby-10.2 » org » apache » derbyTesting » functionTests » tests » jdbcapi » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derbyTesting.functionTests.tests.jdbcapi 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:
003:           Derby - Class org.apache.derbyTesting.functionTests.tests.jdbcapi.setTransactionIsolation.java
004:
005:           Licensed to the Apache Software Foundation (ASF) under one or more
006:           contributor license agreements.  See the NOTICE file distributed with
007:           this work for additional information regarding copyright ownership.
008:           The ASF licenses this file to You under the Apache License, Version 2.0
009:           (the "License"); you may not use this file except in compliance with
010:           the License.  You may obtain a copy of the License at
011:
012:              http://www.apache.org/licenses/LICENSE-2.0
013:
014:           Unless required by applicable law or agreed to in writing, software
015:           distributed under the License is distributed on an "AS IS" BASIS,
016:           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:           See the License for the specific language governing permissions and
018:           limitations under the License.
019:
020:         */
021:
022:        package org.apache.derbyTesting.functionTests.tests.jdbcapi;
023:
024:        import java.lang.reflect.*;
025:
026:        import java.sql.CallableStatement;
027:        import java.sql.Connection;
028:        import java.sql.PreparedStatement;
029:        import java.sql.ResultSet;
030:        import java.sql.ResultSetMetaData;
031:        import java.sql.SQLException;
032:        import java.sql.Statement;
033:        import java.sql.Types;
034:        import java.sql.*;
035:        import java.io.*;
036:
037:        import org.apache.derby.tools.ij;
038:        import org.apache.derby.tools.JDBCDisplayUtil;
039:        import org.apache.derbyTesting.functionTests.util.TestUtil;
040:
041:        public class setTransactionIsolation {
042:
043:            static String conntype = null;
044:            static boolean shortTest = true;
045:
046:            public static void main(String args[]) {
047:
048:                try {
049:                    // use the ij utility to read the property file and
050:                    // make the initial connection.
051:                    ij.getPropertyArg(args);
052:                    Connection conn = ij.startJBMS();
053:
054:                    createAndPopulateTable(conn);
055:                    runTests(conn);
056:                    conn.rollback();
057:                    cleanUp(conn);
058:                    conn.close();
059:                } catch (Throwable e) {
060:                    e.printStackTrace();
061:                }
062:            }
063:
064:            private static void dropTable(Statement stmt, String tab) {
065:                try {
066:                    stmt.executeUpdate("drop table " + tab);
067:                } catch (SQLException se) {
068:                }
069:            }
070:
071:            //create table and insert couple of rows
072:            private static void createAndPopulateTable(Connection conn)
073:                    throws SQLException {
074:                Statement stmt = conn.createStatement();
075:
076:                String[] tabsToDrop = { "tab1", "t1", "t1copy", "t2", "t3" };
077:                for (int i = 0; i < tabsToDrop.length; i++)
078:                    dropTable(stmt, tabsToDrop[i]);
079:
080:                System.out.println("Creating table...");
081:                final int stringLength = 400;
082:                stmt.executeUpdate("CREATE TABLE TAB1 (c11 int, "
083:                        + "c12 varchar(" + stringLength + "))");
084:                PreparedStatement insertStmt = conn
085:                        .prepareStatement("INSERT INTO TAB1 VALUES(?,?)");
086:                // We need to ensure that there is more data in the table than the
087:                // client can fetch in one message (about 32K). Otherwise, the
088:                // cursor might be closed on the server and we are not testing the
089:                // same thing in embedded mode and client/server mode.
090:                final int rows = 40000 / stringLength;
091:                StringBuffer buff = new StringBuffer(stringLength);
092:                for (int i = 0; i < stringLength; i++) {
093:                    buff.append(" ");
094:                }
095:                for (int i = 1; i <= rows; i++) {
096:                    insertStmt.setInt(1, i);
097:                    insertStmt.setString(2, buff.toString());
098:                    insertStmt.executeUpdate();
099:                }
100:                insertStmt.close();
101:
102:                stmt.execute("create table t1(I int, B char(15))");
103:                stmt.execute("create table t1copy(I int, B char(15))");
104:
105:                stmt.executeUpdate("INSERT INTO T1 VALUES(1,'First Hello')");
106:                stmt.executeUpdate("INSERT INTO T1 VALUES(2,'Second Hello')");
107:                stmt.executeUpdate("INSERT INTO T1 VALUES(3,'Third Hello')");
108:
109:                stmt.executeUpdate("create table t3 (i integer)");
110:
111:                System.out.println("done creating table and inserting data.");
112:
113:                stmt.close();
114:            }
115:
116:            public static void runTests(Connection conn) throws Throwable {
117:                try {
118:                    // make new statements after we set the isolation level
119:                    testIsolation(conn, true);
120:                    // reuse old statements.  setTransaction isolation has no effect 
121:                    // on already prepared statements for network server
122:                    conn
123:                            .setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
124:                    testIsolation(conn, false);
125:                    testSetTransactionIsolationInHoldCursor(conn);
126:                    testSetTransactionIsolationCommits(conn);
127:                } catch (SQLException sqle) {
128:                    System.out.print("FAIL:");
129:                    org.apache.derby.tools.JDBCDisplayUtil.ShowSQLException(
130:                            System.out, sqle);
131:                    sqle.printStackTrace(System.out);
132:                }
133:
134:            }
135:
136:            public static int[] isoLevels = {
137:                    Connection.TRANSACTION_READ_UNCOMMITTED,
138:                    Connection.TRANSACTION_REPEATABLE_READ,
139:                    Connection.TRANSACTION_READ_COMMITTED,
140:                    Connection.TRANSACTION_SERIALIZABLE };
141:
142:            private static void testIsolation(Connection conn,
143:                    boolean makeNewStatements) throws SQLException {
144:
145:                Connection conn2 = null;
146:                try {
147:                    conn2 = ij.startJBMS();
148:
149:                } catch (Exception e) {
150:                    System.out.println(e.getMessage());
151:                    e.printStackTrace();
152:                }
153:                Statement stmt = conn.createStatement();
154:                Statement stmt2 = conn2.createStatement();
155:                System.out.println("*** testIsolation. makeNewStatements ="
156:                        + makeNewStatements);
157:
158:                conn.setAutoCommit(false);
159:
160:                conn2.setAutoCommit(false);
161:
162:                stmt2
163:                        .executeUpdate("call SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1)");
164:                String[] sql = { "select * from t1",
165:                        "insert into t1copy (select * from t1)" };
166:
167:                PreparedStatement ps = null;
168:                System.out.println("*** Test with no lock timeouts ***");
169:                for (int s = 0; s < sql.length; s++)
170:                    testLevelsAndPrintStatistics(conn2, sql[s],
171:                            makeNewStatements);
172:                // Now do an insert to create lock timeout
173:                System.out
174:                        .println("*** Test with lock timeouts on everything but read uncommitted***");
175:                System.out
176:                        .println("conn :insert into t1 values(4,'Forth Hello') (no commit)");
177:                stmt.executeUpdate("insert into t1 values(4,'Fourth Hello')");
178:                for (int s = 0; s < sql.length; s++)
179:                    testLevelsAndPrintStatistics(conn2, sql[s],
180:                            makeNewStatements);
181:                stmt.close();
182:                stmt2.close();
183:                // rollback to cleanup locks from insert
184:                conn.rollback();
185:
186:            }
187:
188:            /**
189:             *   Call setTransactionIsolation with holdable cursor open?
190:             */
191:            public static void testSetTransactionIsolationInHoldCursor(
192:                    Connection conn) {
193:                try {
194:
195:                    PreparedStatement ps = conn
196:                            .prepareStatement("SELECT * from TAB1");
197:                    ResultSet rs = ps.executeQuery();
198:                    rs.next();
199:                    // setTransactionIsolation should fail because we have 
200:                    // a holdable cursor open
201:                    conn
202:                            .setTransactionIsolation(java.sql.Connection.TRANSACTION_SERIALIZABLE);
203:                    rs.next(); // to fix DERBY-1108. Else the GC for ibm15 will clean up the ResultSet Object
204:                } catch (SQLException se) {
205:                    System.out.println("EXPECTED EXCEPTION SQLSTATE:"
206:                            + se.getSQLState() + " " + se.getMessage());
207:                    return;
208:                }
209:                System.out
210:                        .println("FAIL: setTransactionIsolation() did not throw exception with open hold cursor");
211:            }
212:
213:            /**
214:             *   setTransactionIsolation commits?
215:             */
216:            public static void testSetTransactionIsolationCommits(
217:                    Connection conn) {
218:                // In the current client implementation, the transaction will
219:                // commit when setTransactionIsolation is called, while the
220:                // embedded driver will not commit. See
221:                // http://issues.apache.org/jira/browse/DERBY-2064
222:                try {
223:                    conn.rollback();
224:                    conn.setAutoCommit(false);
225:                    conn
226:                            .setTransactionIsolation(java.sql.Connection.TRANSACTION_SERIALIZABLE);
227:                    Statement s = conn.createStatement();
228:                    s.executeUpdate("delete from t3");
229:                    s.executeUpdate("insert into t3 values(1)");
230:                    conn.commit();
231:                    s.executeUpdate("insert into t3 values(2)");
232:                    conn
233:                            .setTransactionIsolation(java.sql.Connection.TRANSACTION_SERIALIZABLE);
234:                    conn.rollback();
235:                    ResultSet rs = s.executeQuery("select count(*) from t3");
236:                    rs.next();
237:                    int count = rs.getInt(1);
238:                    switch (count) {
239:                    case 1:
240:                        System.out
241:                                .println("count="
242:                                        + count
243:                                        + ", setTransactionIsolation() does not commit");
244:                        break;
245:                    case 2:
246:                        System.out.println("count=" + count
247:                                + ", setTransactionIsolation() commits");
248:                        break;
249:                    default:
250:                        System.out
251:                                .println("FAIL: count="
252:                                        + count
253:                                        + ", unexepected behaviour from testSetTransactionIsolationCommits");
254:                        break;
255:                    }
256:                    rs.close();
257:                    s.close();
258:                } catch (SQLException se) {
259:                    System.out.println(se.getMessage());
260:                }
261:            }
262:
263:            public static void testLevelsAndPrintStatistics(Connection con,
264:                    String sql, boolean makeNewStatements) throws SQLException {
265:                System.out.println("***testLevelsAndPrintStatistics sql:" + sql
266:                        + " makenewStatements:" + makeNewStatements);
267:                PreparedStatement ps = con.prepareStatement(sql);
268:                Statement stmt = con.createStatement();
269:
270:                System.out.println("con.prepareStatement(" + sql + ")");
271:                for (int i = 0; i < isoLevels.length; i++) {
272:
273:                    try {
274:                        System.out.println("con.setTransactionIsolation("
275:                                + getIsoLevelName(isoLevels[i]) + ")");
276:                        con.setTransactionIsolation(isoLevels[i]);
277:
278:                        System.out
279:                                .println("con.getTransactionIsolation() ="
280:                                        + getIsoLevelName(con
281:                                                .getTransactionIsolation()));
282:                        if (makeNewStatements) {
283:                            ps.close();
284:                            ps = con.prepareStatement(sql);
285:                            System.out.println("con.prepareStatement(" + sql
286:                                    + ")");
287:                        }
288:
289:                        System.out.println(sql);
290:                        ps.execute();
291:                        ResultSet rs = ps.getResultSet();
292:                        // fetch data so that we get the same errors with
293:                        // and without pre-fetching in execute()
294:                        rs.next();
295:                        showScanStatistics(rs, con);
296:
297:                        // Now execute again and look at the locks
298:                        /*
299:                          // can't do the locks right now because of prefetch
300:                        ps.execute();
301:                        rs = ps.getResultSet();
302:                        if (rs != null)
303:                        {
304:                        	rs.next();
305:                        	ResultSet lockrs = stmt.executeQuery("Select * from SYSCS_DIAG.LOCK_TABLE l where l.tableType <> 'S'");
306:                        	JDBCDisplayUtil.DisplayResults(System.out,lockrs,con);
307:                        	lockrs.close();
308:                        	rs.close();
309:                        }
310:                         */
311:                    } catch (Exception e) {
312:                        System.out.println(e.getMessage());
313:                        //e.printStackTrace();
314:                    }
315:                    con.commit();
316:                    stmt
317:                            .executeUpdate("call SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1)");
318:                }
319:
320:                ps.close();
321:                stmt.close();
322:                System.out.println("\n\n");
323:            }
324:
325:            public static String getIsoLevelName(int level) {
326:                switch (level) {
327:                case java.sql.Connection.TRANSACTION_REPEATABLE_READ:
328:                    return "TRANSACTION_REAPEATABLE_READ:" + level;
329:
330:                case java.sql.Connection.TRANSACTION_READ_COMMITTED:
331:                    return "TRANSACTION_READ_COMMITTED:" + level;
332:                case java.sql.Connection.TRANSACTION_SERIALIZABLE:
333:                    return "TRANSACTION_SERIALIZABLE:" + level;
334:                case java.sql.Connection.TRANSACTION_READ_UNCOMMITTED:
335:                    return "TRANSACTION_READ_UNCOMMITTED:" + level;
336:
337:                }
338:                return "UNEXPECTED_ISO_LEVEL";
339:            }
340:
341:            private static void statementExceptionExpected(Statement s,
342:                    String sql) {
343:                System.out.println(sql);
344:                try {
345:                    s.execute(sql);
346:                    System.out
347:                            .println("FAIL - SQL expected to throw exception");
348:                } catch (SQLException sqle) {
349:                    System.out.println("EXPECTED " + sqle.toString());
350:                }
351:            }
352:
353:            public static void showResultsAndStatistics(Statement s,
354:                    Connection conn, boolean expectException) {
355:                ResultSet rs = null;
356:                try {
357:                    rs = s.getResultSet();
358:                    if (rs == null) {
359:                        System.out
360:                                .println("UPDATE COUNT " + s.getUpdateCount());
361:                        return;
362:                    } else
363:                        showResultsAndStatistics(rs, conn, expectException);
364:                } catch (SQLException se) {
365:                    // assume the getResultSet should go well 
366:                    // expectException is for the scan
367:                    System.out.print("FAIL: UNEXPECTED EXCEPTION:");
368:                    JDBCDisplayUtil.ShowSQLException(System.out, se);
369:                }
370:            }
371:
372:            public static void showResultsAndStatistics(ResultSet rs,
373:                    Connection conn, boolean expectException) {
374:
375:                try {
376:                    System.out.println("CursorName:" + rs.getCursorName());
377:                    JDBCDisplayUtil.DisplayResults(System.out, rs, conn);
378:                    showScanStatistics(rs, conn);
379:                } catch (SQLException se) {
380:                    if (expectException)
381:                        System.out.print("EXPECTED SQL EXCEPTION:");
382:                    else
383:                        System.out.print("FAIL: UNEXPECTED EXCEPTION:");
384:                    JDBCDisplayUtil.ShowSQLException(System.out, se);
385:                }
386:
387:            }
388:
389:            public static void showScanStatistics(ResultSet rs, Connection conn) {
390:                Statement s = null;
391:                ResultSet infors = null;
392:
393:                try {
394:                    rs.close(); // need to close to get statistics
395:                    s = conn.createStatement();
396:                    infors = s
397:                            .executeQuery("values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS()");
398:                    JDBCDisplayUtil.setMaxDisplayWidth(2000);
399:                    JDBCDisplayUtil.DisplayResults(System.out, infors, conn);
400:                    infors.close();
401:                } catch (SQLException se) {
402:                    System.out.print("FAIL:");
403:                    JDBCDisplayUtil.ShowSQLException(System.out, se);
404:                }
405:            }
406:
407:            static void cleanUp(Connection conn) throws SQLException {
408:                String[] testObjects = { "table t1" };
409:                Statement stmt = conn.createStatement();
410:                TestUtil.cleanUpTest(stmt, testObjects);
411:                conn.commit();
412:                stmt.close();
413:            }
414:
415:        }
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