Examples with JDOQLCompiler org.datanucleus.query.compiler.JDOQLCompiler used on opensource projects

Example 36 with JDOQLCompiler

use of org.datanucleus.query.compiler.JDOQLCompiler in project tests by datanucleus.

the class JDOQLEvaluatorTest method testFilterEqualityOperator.

/**
 * Test of filter with == and != operators.
 */
public void testFilterEqualityOperator() {
    PersistenceManager pm = pmf.getPersistenceManager();
    Transaction tx = pm.currentTransaction();
    try {
        tx.begin();
        // Create some instances to query over
        List<Person> instances = new ArrayList<>();
        Person p1 = new Person(101, "Mickey", "Mouse", "mickey.mouse@warnerbros.com");
        Person p2 = new Person(102, "Donald", "Duck", "donald.duck@warnerbros.com");
        Person p3 = new Person(103, "Minnie", "Mouse", "minnie.mouse@warnerbros.com");
        instances.add(p1);
        instances.add(p2);
        instances.add(p3);
        // Compile the query
        JDOQuery q = (JDOQuery) pm.newQuery(Person.class, "firstName == 'Mickey'");
        Query query = q.getInternalQuery();
        ClassLoaderResolver clr = query.getExecutionContext().getClassLoaderResolver();
        JavaQueryCompiler compiler = new JDOQLCompiler(query.getExecutionContext().getNucleusContext(), clr, null, query.getCandidateClass(), null, query.getFilter(), query.getParsedImports(), query.getOrdering(), query.getResult(), query.getGrouping(), query.getHaving(), query.getExplicitParametersDeclaration(), query.getExplicitVariablesDeclaration(), null);
        QueryCompilation compilation = compiler.compile(new HashMap(), null);
        // Execute the query
        JavaQueryInMemoryEvaluator eval = new JDOQLInMemoryEvaluator(query, instances, compilation, null, clr);
        List results = (List) eval.execute(true, true, true, true, true);
        assertEquals("Number of result instances was wrong", 1, results.size());
        Person p = (Person) results.get(0);
        assertEquals("Result instance has wrong first name", "Mickey", p.getFirstName());
        assertEquals("Result instance has wrong last name", "Mouse", p.getLastName());
        assertEquals("Person number of result instance is wrong", 101, p.getPersonNum());
        // Compile the query
        q = (JDOQuery) pm.newQuery(Person.class, "lastName != 'Mouse'");
        query = q.getInternalQuery();
        clr = query.getExecutionContext().getClassLoaderResolver();
        compiler = new JDOQLCompiler(query.getExecutionContext().getNucleusContext(), clr, null, query.getCandidateClass(), null, query.getFilter(), query.getParsedImports(), query.getOrdering(), query.getResult(), query.getGrouping(), query.getHaving(), query.getExplicitParametersDeclaration(), query.getExplicitVariablesDeclaration(), null);
        compilation = compiler.compile(new HashMap(), null);
        // Execute the query
        eval = new JDOQLInMemoryEvaluator(query, instances, compilation, null, clr);
        results = (List) eval.execute(true, true, true, true, true);
        assertEquals("Number of result instances was wrong", 1, results.size());
        p = (Person) results.get(0);
        assertEquals("Result instance has wrong first name", "Donald", p.getFirstName());
        assertEquals("Result instance has wrong last name", "Duck", p.getLastName());
        assertEquals("Person number of result instance is wrong", 102, p.getPersonNum());
        tx.commit();
    } catch (Exception e) {
        e.printStackTrace();
        fail("Exception thrown during query execution " + e.getMessage());
    } finally {
        if (tx.isActive()) {
            tx.rollback();
        }
        pm.close();
    }
}