Examples of com.sleepycat.bdb.TransactionRunner

com.sleepycat.bdb.TransactionRunner
Starts a transaction, calls {@link TransactionWorker#doWork}, and handles transaction retry and exceptions. @author Mark Hayes

    public void setUp()
        throws Exception {


        System.out.println(getName());
        env = testEnv.open(getName());
        runner = new TransactionRunner(env);
        File dir = testEnv.getDirectory(getName());


        openFlags = Db.DB_CREATE;
        if (testEnv.isTxnMode())
            openFlags |= Db.DB_AUTO_COMMIT;

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    public void setUp()
        throws Exception {


        System.out.println(getName());
        env = testEnv.open(getName());
        runner = new TransactionRunner(env);
        createDatabase();
    }

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    }


    private void commitTest(final boolean explicit)
        throws Exception {


        final TransactionRunner runner = new TransactionRunner(env);


        assertNull(currentTxn.getTxn());


        runner.run(new TransactionWorker() {
            public void doWork() throws Exception {
                final DbTxn txn1 = currentTxn.getTxn();
                assertNotNull(txn1);
                assertNull(map.put(ONE, ONE));
                assertEquals(ONE, map.get(ONE));


                runner.run(new TransactionWorker() {
                    public void doWork() throws Exception {
                        final DbTxn txn2 = currentTxn.getTxn();
                        assertNotNull(txn2);
                        assertTrue(txn1 != txn2);
                        assertNull(map.put(TWO, TWO));

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    }


    private void abortTest(final boolean explicit)
        throws Exception {


        final TransactionRunner runner = new TransactionRunner(env);


        assertNull(currentTxn.getTxn());


        runner.run(new TransactionWorker() {
            public void doWork() throws Exception {
                final DbTxn txn1 = currentTxn.getTxn();
                assertNotNull(txn1);
                assertNull(map.put(ONE, ONE));
                assertEquals(ONE, map.get(ONE));


                try {
                    runner.run(new TransactionWorker() {
                        public void doWork() throws Exception {
                            final DbTxn txn2 = currentTxn.getTxn();
                            assertNotNull(txn2);
                            assertTrue(txn1 != txn2);
                            assertNull(map.put(TWO, TWO));

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            // For testing auto-commit, use a normal (transactional) runner for
            // all reading and for writing via an iterator, and a do-nothing
            // runner for writing via collections; if auto-commit is tested,
            // the per-collection auto-commit property will be set elsewhere.
            //
            TransactionRunner normalRunner = new TransactionRunner(env);
            TransactionRunner nullRunner = new NullTransactionRunner(env);
            readRunner = nullRunner;
            writeIterRunner = normalRunner;
            if (isAutoCommit)
                writeRunner = nullRunner;
            else

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    public void setUp()
        throws Exception {


        System.out.println(getName());
        env = TestEnv.TXN.open(getName());
        runner = new TransactionRunner(env);
        createDatabase();
    }

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        System.out.println(getName());
        env = testEnv.open(getName());
        openFlags = Db.DB_CREATE;
        if (testEnv.isTxnMode())
            openFlags |= Db.DB_AUTO_COMMIT;
        runner = new TransactionRunner(env);
        createDatabase();
    }

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    }


    public void testDirtyReadTransaction()
        throws Exception {


        TransactionRunner runner = new TransactionRunner(env);
        runner.setDirtyRead(true);
        assertNull(currentTxn.getTxn());
        runner.run(new TransactionWorker() {
            public void doWork() throws Exception {
                assertNotNull(currentTxn.getTxn());
                doDirtyRead(map);
            }
        });

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        }


        public synchronized void run() {


            try {
                final TransactionRunner runner = new TransactionRunner(env);
                final Object thread = this;
                assertNull(currentTxn.getTxn());


                runner.run(new TransactionWorker() {
                    public void doWork() throws Exception {
                        assertNotNull(currentTxn.getTxn());
                        readCheck(map, TWO, null);
                        synchronized (parent) { parent.notify(); }
                        thread.wait();

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     * to use depends on the application.
     */
    private void run()
        throws Exception {


        TransactionRunner runner = new TransactionRunner(db.getEnvironment());
        runner.run(new PopulateDatabase());
        runner.run(new PrintDatabase());
    }

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