/** Add a predicate for each simple property whose value is not null. */
public <T> List<Predicate> byExample(
ManagedType<T> mt,
Path<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 //
|| attr.getPersistentAttributeType() == EMBEDDED) {
continue;
}
Object attrValue = JpaUtil.getValue(mtValue, attr);
if (attrValue != null) {
if (attr.getJavaType() == String.class) {
if (isNotEmpty((String) attrValue)) {
predicates.add(
JpaUtil.stringPredicate(
mtPath.get(JpaUtil.stringAttribute(mt, attr)), attrValue, sp, builder));
}
} else {
predicates.add(builder.equal(mtPath.get(JpaUtil.attribute(mt, attr)), attrValue));
}
}
}
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;
}
public boolean isBoolean() {
return field != null && field.getJavaType().isAssignableFrom(Boolean.class);
}