Examples of javax.jdo.Transaction.begin()

javax.jdo.Transaction.begin()
Begin a transaction. The type of transaction is determined by the setting of the Optimistic flag. @see #setOptimistic @see #getOptimistic @throws JDOUserException if transactions are managed by a containerin the managed environment, or if the transaction is already active.

    /** */
    public void testPositive() {
        PersistenceManager pm = getPM();
        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery(PCPoint.class, inserted, "x ==2");
            Object results = query.execute();


            // check query result

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    /** */
    public void testPositive() {
        PersistenceManager pm = getPM();
        Transaction tx = pm.currentTransaction();
        tx.begin();
        try {
            Query query = pm.newQuery(pm.getExtent(PCPoint.class, false), "x == 1");
            Object results = query.execute();


            // check query result

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        if(debug) 
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence01...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (1 + 1)");

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        if(debug) 
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence01...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (1 + 1) * 2");

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        if(debug)
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence03...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (9 - 1) * (3 + 5) / 32");

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        if(debug)
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence04...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == 2 && y == 2");

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        if(debug)
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence05...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (1 + 1) || y == (1002 - 1000)");

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        if(debug)
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence06...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (1 * 2) && true");

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    void runTestParenthesesMarkOperatorPrecedence07(PersistenceManager pm) {
        if(debug) logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence07...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("x == (10000 / 5000) || false");

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        if(debug)
            logger.debug("\nExecuting Test ParenthesesMarkOperatorPrecedence08...");


        Transaction tx = pm.currentTransaction();
        try {
            tx.begin();


            Query query = pm.newQuery();
            query.setClass(PCPoint.class);
            query.setCandidates(pm.getExtent(PCPoint.class, false));
            query.setFilter("(x == 2) == true");

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