NestedObjectContextPeerEventsIT.java example

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package org.apache.cayenne.remote;

import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.ObjectId;
import org.apache.cayenne.configuration.rop.client.ClientRuntime;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.remote.service.LocalConnection;
import org.apache.cayenne.testdo.mt.ClientMtTable1;
import org.apache.cayenne.testdo.mt.ClientMtTable2;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

import java.util.Arrays;
import java.util.Collection;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

@UseServerRuntime(CayenneProjects.MULTI_TIER_PROJECT)
@RunWith(value=Parameterized.class)
public class NestedObjectContextPeerEventsIT extends RemoteCayenneCase {

    @Inject
    private ClientRuntime runtime;
    
    @Parameters
    public static Collection<Object[]> data() {
        return Arrays.asList(new Object[][]{
                {LocalConnection.HESSIAN_SERIALIZATION},
                {LocalConnection.JAVA_SERIALIZATION},
                {LocalConnection.NO_SERIALIZATION},
        });
    }

    public NestedObjectContextPeerEventsIT(int serializationPolicy) {
        super.serializationPolicy = serializationPolicy;
    }

    @Test
    public void testPeerObjectUpdatedTempOID() throws Exception {
        ObjectContext peer1 = runtime.newContext(clientContext);
        ClientMtTable1 a1 = peer1.newObject(ClientMtTable1.class);
        a1.setGlobalAttribute1("Y");
        ObjectId a1TempId = a1.getObjectId();

        ObjectContext peer2 = runtime.newContext(clientContext);
        ClientMtTable1 a2 = peer2.localObject(a1);

        assertEquals(a1TempId, a2.getObjectId());

        peer1.commitChanges();
        assertFalse(a1.getObjectId().isTemporary());
        assertFalse(a2.getObjectId().isTemporary());
        assertEquals(a2.getObjectId(), a1.getObjectId());
    }

    @Test
    public void testPeerObjectUpdatedSimpleProperty() throws Exception {
        ClientMtTable1 a = clientContext.newObject(ClientMtTable1.class);
        a.setGlobalAttribute1("X");
        clientContext.commitChanges();

        ObjectContext peer1 = runtime.newContext(clientContext);
        ClientMtTable1 a1 = peer1.localObject(a);

        ObjectContext peer2 = runtime.newContext(clientContext);
        ClientMtTable1 a2 = peer2.localObject(a);

        a1.setGlobalAttribute1("Y");
        assertEquals("X", a2.getGlobalAttribute1());
        peer1.commitChangesToParent();
        assertEquals("Y", a2.getGlobalAttribute1());

        assertFalse(
                "Peer data context became dirty on event processing",
                peer2.hasChanges());
    }

    @Test
    public void testPeerObjectUpdatedToOneRelationship() throws Exception {
        ClientMtTable1 a = clientContext.newObject(ClientMtTable1.class);
        ClientMtTable1 altA = clientContext.newObject(ClientMtTable1.class);

        ClientMtTable2 p = clientContext.newObject(ClientMtTable2.class);
        p.setTable1(a);
        p.setGlobalAttribute("PPP");
        a.setGlobalAttribute1("X");
        altA.setGlobalAttribute1("Y");
        clientContext.commitChanges();

        ObjectContext peer1 = runtime.newContext(clientContext);
        ClientMtTable2 p1 = peer1.localObject(p);
        ClientMtTable1 altA1 = peer1.localObject(altA);

        ObjectContext peer2 = runtime.newContext(clientContext);
        ClientMtTable2 p2 = peer2.localObject(p);
        ClientMtTable1 altA2 = peer2.localObject(altA);
        ClientMtTable1 a2 = peer2.localObject(a);

        p1.setTable1(altA1);
        assertSame(a2, p2.getTable1());
        peer1.commitChangesToParent();
        assertEquals(altA2, p2.getTable1());

        assertFalse(
                "Peer data context became dirty on event processing",
                peer2.hasChanges());
    }

    @Test
    public void testPeerObjectUpdatedToManyRelationship() throws Exception {
        ClientMtTable1 a = clientContext.newObject(ClientMtTable1.class);
        a.setGlobalAttribute1("X");

        ClientMtTable2 px = clientContext.newObject(ClientMtTable2.class);
        px.setTable1(a);
        px.setGlobalAttribute("PX");

        ClientMtTable2 py = clientContext.newObject(ClientMtTable2.class);
        py.setGlobalAttribute("PY");

        clientContext.commitChanges();

        ObjectContext peer1 = runtime.newContext(clientContext);
        ClientMtTable2 py1 = peer1.localObject(py);
        ClientMtTable1 a1 = peer1.localObject(a);

        ObjectContext peer2 = runtime.newContext(clientContext);
        ClientMtTable2 py2 = peer2.localObject(py);
        ClientMtTable1 a2 = peer2.localObject(a);

        a1.addToTable2Array(py1);
        assertEquals(1, a2.getTable2Array().size());
        assertFalse(a2.getTable2Array().contains(py2));
        peer1.commitChangesToParent();
        assertEquals(2, a2.getTable2Array().size());
        assertTrue(a2.getTable2Array().contains(py2));

        assertFalse(
                "Peer data context became dirty on event processing",
                peer2.hasChanges());
    }
}