Examples of org.odmg.Transaction.checkpoint()

org.odmg.Transaction.checkpoint()
Commit the transaction, but reopen the transaction, retaining all locks. Calling checkpoint commits persistent object modifications made within the transaction since the last checkpoint to the database. The transaction retains all locks it held on those objects at the time the checkpoint was invoked.


        ProductGroup pg1 = new ProductGroup();
        pg1.setName("BatchModeTest ProductGroup #1");
        database.makePersistent(pg1);


        tx.checkpoint();


        Article a1 = Article.createInstance();
        a1.setArticleName("BatchModeTest Article #1");
        a1.setProductGroup(pg1);
        pg1.addArticle(a1);

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        Article a2 = Article.createInstance();
        a2.setArticleName("BatchModeTest Article #2");
        a2.setProductGroup(pg2);
        pg2.addArticle(a2);


        tx.checkpoint();


        database.deletePersistent(a1);


        tx.checkpoint();

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        tx.checkpoint();


        database.deletePersistent(a1);


        tx.checkpoint();


        database.deletePersistent(pg1);
        database.deletePersistent(a2);
        database.deletePersistent(pg2);

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        database.deletePersistent(pg1);
        database.deletePersistent(a2);
        database.deletePersistent(pg2);


        tx.checkpoint();
        tx.commit();
    }
}

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        Transaction tx = odmg.newTransaction();
        tx.begin();
        storeObjects(tx, getNewODMGZoos("testUserRollbackWithCheckpoint", 10));
        // now we store objects to DB
        tx.checkpoint();
        storeObjects(tx, getNewProjects("testUserRollbackWithCheckpoint", 10));
        //we abort tx, all actions after the last checkpoint call should be rollback
        tx.abort();


        int odmgZoosAfter = getDBObjectCountWithNewPB(ODMGZoo.class);

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        projectsBefore = getDBObjectCountWithNewPB(Project.class);
        // we reuse current tx
        tx.begin();
        storeObjects(tx, getNewODMGZoos("testUserRollbackWithCheckpoint", 10));
        // now we store objects to DB
        tx.checkpoint();
        storeObjects(tx, getNewProjects("testUserRollbackWithCheckpoint", 10));
        //we abort tx, all actions after the last checkpoint call should be rollback
        tx.abort();


        odmgZoosAfter = getDBObjectCountWithNewPB(ODMGZoo.class);

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        tx.begin();
        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();
        tx.checkpoint();
        tx.checkpoint();
        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();

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        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();
        tx.checkpoint();
        tx.checkpoint();
        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();
        tx.checkpoint();

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        tx.checkpoint();
        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();
        tx.checkpoint();
        tx.checkpoint();
        tx.commit();


        tx = odmg.newTransaction();
        tx.begin();

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        tx.abort();


        tx = odmg.newTransaction();
        tx.begin();
        tx.checkpoint();
        tx.checkpoint();
        tx.commit();


        tx = odmg.newTransaction();
        tx.begin();
        tx.commit();

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