protected void test() throws Throwable {
// query to read emp_1
ReadObjectQuery query = new ReadObjectQuery(Employee.class);
ExpressionBuilder builder = query.getExpressionBuilder();
Expression exp =
builder.get("firstName").equal(firstName).and(builder.get("lastName").equal("1"));
query.setSelectionCriteria(exp);
// executing the query used to cause StackOverflow
Employee empRead = (Employee) getSession().executeQuery(query);
// the following line is provided just in case you need to put a break point after query
// execution
empRead.getManagedEmployees().size();
query = null;
}
protected void setup() throws Throwable {
if ((batchType == BatchFetchType.IN) && !getSession().getPlatform().isOracle()) {
throwWarning("Nested arrays not supported on this database");
}
// set readBatch to true on managedEmployees mapping
mappingToDisableBatchReadInReset =
(ForeignReferenceMapping)
getSession()
.getDescriptor(Employee.class)
.getMappingForAttributeName("managedEmployees");
if (mappingToDisableBatchReadInReset.shouldUseBatchReading()) {
// nothing to do - it already uses batch reading
mappingToDisableBatchReadInReset = null;
} else {
mappingToDisableBatchReadInReset.setUsesBatchReading(true);
mappingToDisableBatchReadInReset.setBatchFetchType(batchType);
mappingToDisableBatchReadInReset.getSelectionQuery().setIsPrepared(false);
((ReadAllQuery) mappingToDisableBatchReadInReset.getSelectionQuery())
.setBatchFetchPolicy(null);
mappingToDisableBatchReadInReset
.getDescriptor()
.getObjectBuilder()
.initializeBatchFetchedAttributes();
}
// create objects to be used by the test:
// emp_1 has two managed employees, each of them has one managed employee.
emp_1 = new Employee();
emp_1.firstName = firstName;
emp_1.lastName = "1";
emp_1.sex = "male";
emp_1.managedEmployees = new Vector(2);
Employee emp_1_1 = new Employee();
emp_1_1.firstName = firstName;
emp_1_1.lastName = "1_1";
emp_1_1.sex = "male";
emp_1_1.managedEmployees = new Vector(1);
emp_1.managedEmployees.add(emp_1_1);
emp_1_1.manager = emp_1;
Employee emp_1_2 = new Employee();
emp_1_2.firstName = firstName;
emp_1_2.lastName = "1_2";
emp_1_2.sex = "male";
emp_1_2.managedEmployees = new Vector(1);
emp_1.managedEmployees.add(emp_1_2);
emp_1_2.manager = emp_1;
Employee emp_1_1_1 = new Employee();
emp_1_1_1.firstName = firstName;
emp_1_1_1.lastName = "1_1_1";
emp_1_1_1.sex = "male";
emp_1_1.managedEmployees.add(emp_1_1_1);
emp_1_1_1.manager = emp_1_1;
Employee emp_1_2_1 = new Employee();
emp_1_2_1.firstName = firstName;
emp_1_2_1.lastName = "1_2_1";
emp_1_2_1.sex = "male";
emp_1_2.managedEmployees.add(emp_1_2_1);
emp_1_2_1.manager = emp_1_2;
// Begin transaction here and rollback it in reset.
((AbstractSession) getSession()).beginTransaction();
// write the objects into the db, merge them into session's cache.
UnitOfWork uow = getSession().acquireUnitOfWork();
uow.registerObject(emp_1);
uow.commit();
// now invalidate all the created objects in the session's cache
getSession().getIdentityMapAccessor().invalidateObject(emp_1);
getSession().getIdentityMapAccessor().invalidateObject(emp_1_1);
getSession().getIdentityMapAccessor().invalidateObject(emp_1_2);
getSession().getIdentityMapAccessor().invalidateObject(emp_1_1_1);
getSession().getIdentityMapAccessor().invalidateObject(emp_1_2_1);
}
