public void testQuery() {
createData();
EmbeddedObjectContainer database = Db4oEmbedded.openFile(aliasConfig(), tempFile());
database.query(B.class);
database.query(A.class);
database.close();
querydb(Db4oEmbedded.newConfiguration(), new int[] {1, 0}, A.class, B.class);
}
private EmbeddedConfiguration aliasConfig() {
EmbeddedConfiguration configuration = Db4oEmbedded.newConfiguration();
configuration
.common()
.addAlias(
new TypeAlias(
CrossPlatformServices.fullyQualifiedName(A.class),
CrossPlatformServices.fullyQualifiedName(B.class)));
return configuration;
}
public <T, T1> void querydb(
EmbeddedConfiguration config, int[] count, Class<T> class1, Class<T1> class2) {
EmbeddedObjectContainer database = Db4oEmbedded.openFile(config, tempFile());
try {
List<T> list = database.query(class1);
Assert.areEqual(
count[0], list.size(), "Unexpected result querying for " + class1.getSimpleName());
if (count[0] > 0) {
// System.out.println("Querying for " + class1.getSimpleName() + " getting " +
// list.get(0).getClass().getSimpleName());
}
List<T1> list1 = database.query(class2);
Assert.areEqual(
count[1], list1.size(), "Unexpected result querying for " + class2.getSimpleName());
if (count[1] > 0) {
// System.out.println("Querying for " + class2.getSimpleName() + " getting " +
// list1.get(0).getClass().getSimpleName());
}
} finally {
database.close();
}
}
private void createData() {
EmbeddedObjectContainer database = Db4oEmbedded.openFile(tempFile());
database.store(new A("Item1"));
database.commit();
database.close();
}