/** Test that transactions can be aborted */
public void testAbortTransactions() throws Exception {
Address address1 = new Address();
address1.setAddress("Address 3");
Address address2 = new Address();
address2.setAddress("Address 4");
Query q = new Query();
QueryClass qcAddress = new QueryClass(Address.class);
QueryField qf = new QueryField(qcAddress, "address");
ConstraintSet cs1 = new ConstraintSet(ConstraintOp.OR);
cs1.addConstraint(new SimpleConstraint(qf, ConstraintOp.MATCHES, new QueryValue("Address%")));
q.addToSelect(qcAddress);
q.addFrom(qcAddress);
q.addToOrderBy(qf);
q.setConstraint(cs1);
Results res = writer.execute(q);
assertEquals(res.toString(), 0, res.size());
res = realOs.execute(q);
assertEquals(res.toString(), 0, res.size());
writer.beginTransaction();
assertTrue(writer.isInTransaction());
writer.store(address1);
writer.store(address2);
// TODO: These lines now fail, because we do not allow querying on writers with uncommitted
// data. The writer should relax this restriction.
res = writer.execute(q);
assertEquals(2, res.size());
res = realOs.execute(q);
assertEquals(res.toString(), 0, res.size());
writer.abortTransaction();
assertFalse(writer.isInTransaction());
// Should be nothing there unless we commit
res = writer.execute(q);
assertEquals(res.toString(), 0, res.size());
res = realOs.execute(q);
assertEquals(res.toString(), 0, res.size());
}
public void testFailFast() throws Exception {
Query q1 = new Query();
QueryClass qc1 = new QueryClass(Employee.class);
q1.addFrom(qc1);
q1.addToSelect(qc1);
Results r1 = writer.execute(q1);
writer.store(data.get("EmployeeA1"));
try {
r1.iterator().hasNext();
fail("Expected: ConcurrentModificationException");
} catch (ConcurrentModificationException e) {
}
}
/** Test that transactions do actually commit and that isInTransaction() works. */
public void testCommitTransactions() throws Exception {
Address address1 = new Address();
address1.setAddress("Address 1");
Address address2 = new Address();
address2.setAddress("Address 2");
Query q = new Query();
QueryClass qcAddress = new QueryClass(Address.class);
QueryField qf = new QueryField(qcAddress, "address");
ConstraintSet cs1 = new ConstraintSet(ConstraintOp.OR);
cs1.addConstraint(new SimpleConstraint(qf, ConstraintOp.MATCHES, new QueryValue("Address%")));
q.addToSelect(qcAddress);
q.addFrom(qcAddress);
q.addToOrderBy(qf);
q.setConstraint(cs1);
try {
writer.beginTransaction();
assertTrue(writer.isInTransaction());
writer.store(address1);
writer.store(address2);
// Should be nothing in OS until we commit
Results res = realOs.execute(q);
assertEquals(0, res.size());
// However, they should be in the WRITER.
// TODO: These lines now fail, because we do not allow querying on writers with uncommitted
// data. The writer should relax this restriction.
res = writer.execute(q);
assertEquals(2, res.size());
writer.commitTransaction();
assertFalse(writer.isInTransaction());
res = realOs.execute(q);
assertEquals(2, res.size());
assertEquals(address1, (Address) ((ResultsRow) res.get(0)).get(0));
assertEquals(address2, (Address) ((ResultsRow) res.get(1)).get(0));
} finally {
writer.delete(address1);
writer.delete(address2);
}
}