use of org.datanucleus.tests.applicationid.AppIdStringGeneratorItem in project tests by datanucleus.
the class ValueGeneratorTest method testAppIdentityGenerator.
/**
* Test the use of "identity" generator for application-identity.
*/
public void testAppIdentityGenerator() throws Exception {
try {
HashSet idSet = new HashSet();
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
// Create a few objects.
for (int i = 0; i < 4; i++) {
AppIdStringGeneratorItem item = new AppIdStringGeneratorItem("First item");
pm.makePersistent(item);
pm.flush();
idSet.add(JDOHelper.getObjectId(item));
}
tx.commit();
assertEquals("Number of unique ids persisted is wrong", 4, idSet.size());
} catch (JDOUserException e) {
fail("Exception thrown during insert of objects with \"identity\" generator : " + e.getMessage());
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
pm = pmf.getPersistenceManager();
tx = pm.currentTransaction();
try {
tx.begin();
Iterator idIter = idSet.iterator();
while (idIter.hasNext()) {
Object id = idIter.next();
AppIdStringGeneratorItem obj = (AppIdStringGeneratorItem) pm.getObjectById(id);
assertEquals("Incorrect name", "First item", obj.getName());
}
tx.commit();
} catch (JDOUserException ue) {
assertTrue("Exception thrown during test " + ue.getMessage(), false);
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
pm = pmf.getPersistenceManager();
tx = pm.currentTransaction();
try {
tx.begin();
HashSet idSetCopy = new HashSet(idSet);
// Retrieve the items
Query q = pm.newQuery(pm.getExtent(AppIdStringGeneratorItem.class, true));
Collection c = (Collection) q.execute();
// Check on the number of items
assertTrue("Number of AppIdStringGeneratorItems retrieved is incorrect (" + c.size() + ") : should have been 4", c.size() == 4);
Iterator<AppIdStringGeneratorItem> iter = c.iterator();
while (iter.hasNext()) {
AppIdStringGeneratorItem item = iter.next();
Object id = JDOHelper.getObjectId(item);
if (idSetCopy.contains(id)) {
idSetCopy.remove(id);
}
}
tx.commit();
assertEquals("Wrong number of different IDs", 4, idSet.size());
assertTrue("Retrieved IDs did not match created IDs", 0 == idSetCopy.size());
} catch (JDOUserException ue) {
assertTrue("Exception thrown during test " + ue.getMessage(), false);
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
} finally {
clean(AppIdStringGeneratorItem.class);
}
}
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