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package org.apache.cayenne.lifecycle.sort;
import java.util.Arrays;
import java.util.List;
import junit.framework.TestCase;
import org.apache.cayenne.configuration.server.ServerRuntime;
import org.apache.cayenne.lifecycle.relationship.ObjectIdRelationshipFilter;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.EntityResolver;
public class WeightedAshwoodEntitySorterTest extends TestCase {
private ServerRuntime runtime;
@Override
protected void setUp() throws Exception {
runtime = new ServerRuntime("cayenne-lifecycle.xml");
// a filter is required to invalidate root objects after commit
ObjectIdRelationshipFilter filter = new ObjectIdRelationshipFilter();
runtime.getDataDomain().addFilter(filter);
runtime.getDataDomain().getEntityResolver().getCallbackRegistry().addListener(
filter);
}
@Override
protected void tearDown() throws Exception {
runtime.shutdown();
}
public void testSortDbEntities() {
EntityResolver resolver = runtime.getDataDomain().getEntityResolver();
// since it is impossible to ensure non-coincidental sort order of unrelated
// DbEntities (without overriding DbEntity.hashCode()), we'll test on 2 entities
// with a relationship, and reverse the topological order with SortWeight
// annotation.
List<DbEntity> eSorted = Arrays.asList(resolver.getDbEntity("SORT_DEP"), resolver
.getDbEntity("SORT_ROOT"));
List<DbEntity> e1 = Arrays.asList(resolver.getDbEntity("SORT_ROOT"), resolver
.getDbEntity("SORT_DEP"));
List<DbEntity> e2 = Arrays.asList(resolver.getDbEntity("SORT_DEP"), resolver
.getDbEntity("SORT_ROOT"));
WeightedAshwoodEntitySorter sorter = new WeightedAshwoodEntitySorter();
sorter.setEntityResolver(resolver);
sorter.sortDbEntities(e1, false);
assertEquals(eSorted, e1);
sorter.sortDbEntities(e2, false);
assertEquals(eSorted, e2);
}
}