foundation/eclipselink.core.test/src/it/java/org/eclipse/persistence/testing/tests/queries/report/Scenario1_7d.java

/*
 * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
//     Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.testing.tests.queries.report;

import java.util.*;

import org.eclipse.persistence.expressions.*;
import org.eclipse.persistence.queries.*;
import org.eclipse.persistence.testing.models.employee.domain.*;

/**
 * ReportQuery test for Scenario 1.7a
 * SELECT ID FROM EMPLOYEE
 */
public class Scenario1_7d extends ReportQueryTestCase {
    public Scenario1_7d() {
        setDescription("Retrieve PKs with no items");
    }

    @Override
    protected void buildExpectedResults() {
        Vector employees = getSession().readAllObjects(Employee.class);

        for (Enumeration e = employees.elements(); e.hasMoreElements(); ) {
            Employee emp = (Employee)e.nextElement();
            Object[] result = new Object[0];
            addResult(result,
                      getSession().getDescriptor(Employee.class).getObjectBuilder().extractPrimaryKeyFromObject(emp,
                                                                                                                getAbstractSession()));
        }
    }

    @Override
    protected void setup() throws Exception {
        super.setup();
        reportQuery = new ReportQuery(new ExpressionBuilder());

        reportQuery.setReferenceClass(Employee.class);
        reportQuery.retrievePrimaryKeys();
    }
}