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package org.apache.cayenne.access;
import junit.framework.TestCase;
import org.apache.cayenne.configuration.ConfigurationNameMapper;
import org.apache.cayenne.configuration.ConfigurationTree;
import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.configuration.DataMapLoader;
import org.apache.cayenne.configuration.DefaultConfigurationNameMapper;
import org.apache.cayenne.configuration.XMLDataChannelDescriptorLoader;
import org.apache.cayenne.configuration.XMLDataMapLoader;
import org.apache.cayenne.di.Binder;
import org.apache.cayenne.di.DIBootstrap;
import org.apache.cayenne.di.Injector;
import org.apache.cayenne.di.Module;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.Relationship;
import org.apache.cayenne.resource.URLResource;
import java.net.URL;
import java.util.ArrayList;
public class ManyToManyCandidateEntityTest extends TestCase {
private DataMap map;
@Override
public void setUp() throws Exception {
Module testModule = new Module() {
public void configure(Binder binder) {
binder.bind(DataMapLoader.class).to(XMLDataMapLoader.class);
binder.bind(ConfigurationNameMapper.class).to(
DefaultConfigurationNameMapper.class);
}
};
Injector injector = DIBootstrap.createInjector(testModule);
// create and initialize loader instance to test
XMLDataChannelDescriptorLoader loader = new XMLDataChannelDescriptorLoader();
injector.injectMembers(loader);
String testConfigName = "relationship-optimisation";
URL url = getClass().getResource("cayenne-" + testConfigName + ".xml");
ConfigurationTree<DataChannelDescriptor> tree = loader.load(new URLResource(url));
map = tree.getRootNode().getDataMap(testConfigName);
}
public void testMatchingForManyToManyEntity() throws Exception {
ObjEntity manyToManyEntity = map.getObjEntity("Table1Table2");
assertEquals(true, new ManyToManyCandidateEntity(manyToManyEntity).isRepresentManyToManyTable());
}
public void testMatchingForNotManyToManyEntity() throws Exception {
ObjEntity entity = map.getObjEntity("Table1");
assertEquals(false, new ManyToManyCandidateEntity(entity).isRepresentManyToManyTable());
}
public void testOptimisationForManyToManyEntity() {
ObjEntity manyToManyEntity = map.getObjEntity("Table1Table2");
new ManyToManyCandidateEntity(manyToManyEntity).optimizeRelationships();
ObjEntity table1Entity = map.getObjEntity("Table1");
ObjEntity table2Entity = map.getObjEntity("Table2");
assertEquals(1, table1Entity.getRelationships().size());
assertEquals(table2Entity, new ArrayList<Relationship>(table1Entity.getRelationships()).get(0)
.getTargetEntity());
assertEquals(1, table2Entity.getRelationships().size());
assertEquals(table1Entity, new ArrayList<Relationship>(table2Entity.getRelationships()).get(0)
.getTargetEntity());
}
}