@Override
public Object bind(
RootParamNode rootParamNode,
String name,
Class clazz,
java.lang.reflect.Type type,
Annotation[] annotations) {
// TODO need to be more generic in order to work with JPASupport
if (clazz.isAnnotationPresent(Entity.class)) {
ParamNode paramNode = rootParamNode.getChild(name, true);
String[] keyNames = new JPAModelLoader(clazz).keyNames();
ParamNode[] ids = new ParamNode[keyNames.length];
// Collect the matching ids
int i = 0;
for (String keyName : keyNames) {
ids[i++] = paramNode.getChild(keyName, true);
}
if (ids != null && ids.length > 0) {
try {
EntityManager em = JPABase.getJPAConfig(clazz).getJPAContext().em();
StringBuilder q =
new StringBuilder().append("from ").append(clazz.getName()).append(" o where");
int keyIdx = 1;
for (String keyName : keyNames) {
q.append(" o.").append(keyName).append(" = ?").append(keyIdx++).append(" and ");
}
if (q.length() > 4) {
q = q.delete(q.length() - 4, q.length());
}
Query query = em.createQuery(q.toString());
// The primary key can be a composite.
Class[] pk = new JPAModelLoader(clazz).keyTypes();
int j = 0;
for (ParamNode id : ids) {
if (id.getValues() == null
|| id.getValues().length == 0
|| id.getFirstValue(null) == null
|| id.getFirstValue(null).trim().length() <= 0) {
// We have no ids, it is a new entity
return GenericModel.create(rootParamNode, name, clazz, annotations);
}
query.setParameter(
j + 1,
Binder.directBind(
id.getOriginalKey(), annotations, id.getValues()[0], pk[j++], null));
}
Object o = query.getSingleResult();
return GenericModel.edit(rootParamNode, name, o, annotations);
} catch (NoResultException e) {
// ok
} catch (Exception e) {
throw new UnexpectedException(e);
}
}
return GenericModel.create(rootParamNode, name, clazz, annotations);
}
return null;
}
@Override
public Object bindBean(RootParamNode rootParamNode, String name, Object bean) {
if (bean instanceof JPABase) {
return GenericModel.edit(rootParamNode, name, bean, null);
}
return null;
}