Example #1
0
 /**
  * Invoke byExample method for each not null x-to-one association when their pk is not set. This
  * allows you to search entities based on an associated entity's properties value.
  */
 @SuppressWarnings("unchecked")
 public <T extends Identifiable<?>, M2O extends Identifiable<?>> List<Predicate> byExampleOnXToOne(
     ManagedType<T> mt,
     Root<T> mtPath,
     final T mtValue,
     SearchParameters sp,
     CriteriaBuilder builder) {
   List<Predicate> predicates = newArrayList();
   for (SingularAttribute<? super T, ?> attr : mt.getSingularAttributes()) {
     if (attr.getPersistentAttributeType() == MANY_TO_ONE
         || attr.getPersistentAttributeType() == ONE_TO_ONE) {
       M2O m2oValue = (M2O) JpaUtil.getValue(mtValue, mt.getAttribute(attr.getName()));
       Class<M2O> m2oType = (Class<M2O>) attr.getBindableJavaType();
       Path<M2O> m2oPath = (Path<M2O>) mtPath.get(attr);
       ManagedType<M2O> m2oMt = em.getMetamodel().entity(m2oType);
       if (m2oValue != null) {
         if (m2oValue.isIdSet()) { // we have an id, let's restrict only on this field
           predicates.add(builder.equal(m2oPath.get("id"), m2oValue.getId()));
         } else {
           predicates.addAll(byExample(m2oMt, m2oPath, m2oValue, sp, builder));
         }
       }
     }
   }
   return predicates;
 }
 @Override
 public Map<String, Map<String, Class<?>>> getTableColumnMap() {
   Metamodel metamodel = entityManager.getEntityManagerFactory().getMetamodel();
   Set<EntityType<?>> entityTypes = metamodel.getEntities();
   Map<String, Map<String, Class<?>>> tableColumnMap =
       new HashMap<String, Map<String, Class<?>>>();
   for (EntityType<?> type : entityTypes) {
     EntityType<Entity> entityType = (EntityType<Entity>) type;
     Set<SingularAttribute<? super Entity, ?>> singularAttributes =
         entityType.getSingularAttributes();
     Map<String, Class<?>> columnMap = new HashMap<String, Class<?>>();
     for (SingularAttribute<? super Entity, ?> singularAttribute : singularAttributes) {
       columnMap.put(singularAttribute.getName(), singularAttribute.getJavaType());
     }
     tableColumnMap.put(entityType.getName(), columnMap);
   }
   return tableColumnMap;
 }
Example #3
0
  @SuppressWarnings("unchecked")
  private static String getEntityIdField(EntityManager em, Class entity) {

    String idProperty = "";

    Metamodel metamodel = em.getMetamodel();
    EntityType e = metamodel.entity(entity);
    Set<SingularAttribute> singularAttributes = e.getSingularAttributes();

    for (SingularAttribute singularAttribute : singularAttributes) {

      if (singularAttribute.isId()) {

        idProperty = singularAttribute.getName();
        break;
      }
    }

    return idProperty;
  }
Example #4
0
  @Override
  public String toString() {

    return attribute.getName() + " == " + value;
  }