public void testReferenceLinkAttribute() {
Session ssn = SessionManager.getSession();
DataObject user = ssn.create(getModelName() + ".User");
user.set("id", BigInteger.valueOf(0));
user.set("email", "*****@*****.**");
user.set("firstName", "foo");
user.set("lastNames", "bar");
user.save();
DataObject[] images = new DataObject[2];
for (int i = 0; i < images.length; i++) {
images[i] = ssn.create(getModelName() + ".Image");
images[i].set("id", BigInteger.valueOf(i));
byte[] bytes = "This is the image.".getBytes();
images[i].set("bytes", bytes);
images[i].save();
}
// set image
user.set("image", images[0]);
user.save();
// retrieve and then update caption
DataAssociationCursor dac = ((DataAssociation) images[0].get("users")).cursor();
dac.next();
assertNull(dac.getLinkProperty("caption"));
assertEquals(user, dac.getDataObject());
DataObject link = dac.getLink();
link.set("caption", "caption");
link.save();
dac = ((DataAssociation) images[0].get("users")).cursor();
dac.next();
assertEquals("caption", dac.getLinkProperty("caption"));
assertEquals(1L, ((DataAssociation) images[0].get("users")).size());
// set new image as image
user.set("image", images[1]);
user.save();
// check that old image is no longer associated with user
assertEquals(0L, ((DataAssociation) images[0].get("users")).size());
// check that new image is associated with user and has no caption
dac = ((DataAssociation) images[1].get("users")).cursor();
dac.next();
assertNull(dac.getLinkProperty("caption"));
assertEquals(1L, ((DataAssociation) images[1].get("users")).size());
}
