Examples of javax.jdo.PersistenceManager

javax.jdo.PersistenceManager
PersistenceManager is the primary interface for JDO-aware application components. It is the factory for Query and Transaction instances, and contains methods to manage the life cycle of PersistenceCapable instances.
A PersistenceManager is obtained from the {@link PersistenceManagerFactory}(recommended) or by construction. @version 2.1

    {
        if (pc == null)
        {
            return null;
        }
        PersistenceManager pm = JDOHelper.getPersistenceManager(pc);
        if (pm == null)
        {
            return null;
        }
        return ((AbstractPersistenceManager)pm).getObjectManager();

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        assertIsOpen();


        // Freeze the PMF config now that we are handing out PM's
        freezeConfiguration();


        PersistenceManager pm = new JDOPersistenceManager(this, userName, password);


        if (lifecycleListeners != null)
        {
            // Add PMF lifecycle listeners to the PM
            Iterator listenerIter = lifecycleListeners.iterator();
            while (listenerIter.hasNext())
            {
                LifecycleListenerForClass listener = (LifecycleListenerForClass) listenerIter.next();
                pm.addInstanceLifecycleListener(listener.getListener(), listener.getClasses());
            }
        }


        getPmCache().add(pm);

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     * to succeed or to fail.
     */
    private void compile(String assertion, 
            QueryElementHolder queryElementHolder, boolean asSingleString,  
            String singleStringQuery, boolean positive) {
        PersistenceManager pm = getPM();
        try {
            Query query;
            if (queryElementHolder != null) {
                if (asSingleString) {
                    query = queryElementHolder.getSingleStringQuery(pm);

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     * @param queryText
     * @param positive
     */
    protected void compile(String assertion, 
            Query query, String queryText, boolean positive) {
        PersistenceManager pm = getPM();
        Transaction tx = pm.currentTransaction();
        tx.begin();
        try {
            query.compile();
            if (!positive) {
                fail(assertion,

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     * @return the query result
     */
    private Object execute(String assertion, 
            QueryElementHolder queryElementHolder, boolean asSingleString,
            Object parameters, Object expectedResult) {
        PersistenceManager pm = getPM();
        Query query = asSingleString ?
                queryElementHolder.getSingleStringQuery(pm) :
                    queryElementHolder.getAPIQuery(pm);
        Object result = execute(assertion, query, 
                queryElementHolder.toString(),

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     */
    private Object execute(String assertion, Query query, 
            String singleStringQuery, boolean hasOrdering,
            Object parameters, Object expectedResult, boolean positive) {
        Object result = null;
        PersistenceManager pm = getPM();
        Transaction tx = pm.currentTransaction();
        tx.begin();
        try {
            try {
                if (parameters == null) {
                    result = query.execute();

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     * @param expectedNrOfDeletedObjects the expected number of deleted objects.
     */
    private void delete(String assertion, 
            QueryElementHolder queryElementHolder, boolean asSingleString,
            Object parameters, long expectedNrOfDeletedObjects) {
        PersistenceManager pm = getPM();
        Query query = asSingleString ?
                queryElementHolder.getSingleStringQuery(pm) :
                    queryElementHolder.getAPIQuery(pm);
        delete(assertion, query, queryElementHolder.toString(), 
                parameters, expectedNrOfDeletedObjects);

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     */
    private void delete(String assertion, Query query, 
            String singleStringQuery, Object parameters, 
            long expectedNrOfDeletedObjects) {
        boolean positive = expectedNrOfDeletedObjects >= 0;
        PersistenceManager pm = getPM();
        Transaction tx = pm.currentTransaction();
        tx.begin();
        try {
            try {
                long nr;
                if (parameters == null) {

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        BatchTestRunner.run(NonCorrelatedSubqueries.class);
    }


    /** */
    public void testPositive() throws Exception {
        PersistenceManager pm = getPM();
        runTestSubqueries01(pm);
        runTestSubqueries02(pm);
    }

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        BatchTestRunner.run(CorrelatedSubqueriesWithParameters.class);
    }


    /** */
    public void testPositive() throws Exception {
        PersistenceManager pm = getPM();
        runTestSubqueries01(pm);
        runTestSubqueries02(pm);
        runTestSubqueries03(pm);
    }

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