private Object getEntityId(Object obj, HibernateTemplate ht)
throws IllegalAccessException, InvocationTargetException {
ClassMetadata cm = ht.getSessionFactory().getClassMetadata(superClass);
String idCol = cm.getIdentifierPropertyName();
PropertyDescriptor idPropDescr = BeanUtils.getPropertyDescriptor(superClass, idCol);
return idPropDescr.getReadMethod().invoke(obj);
}
/**
* Parse the {@link DataAccessException} to see if special problems were encountered while
* performing the query. See issue NMS-5029 for examples of stack traces that can be thrown from
* these calls. {@see http://issues.opennms.org/browse/NMS-5029}
*/
private void logExtraSaveOrUpdateExceptionInformation(
final T entity, final DataAccessException e) {
Throwable cause = e;
while (cause.getCause() != null) {
// if (cause.getCause().getClass().getName().equals(PSQLException.class.getName())) {
if (cause.getMessage().contains("duplicate key value violates unique constraint")) {
final ClassMetadata meta = getSessionFactory().getClassMetadata(m_entityClass);
LogUtils.warnf(
this,
"Duplicate key constraint violation, class: %s, key value: %s",
m_entityClass.getName(),
meta.getPropertyValue(entity, meta.getIdentifierPropertyName(), EntityMode.POJO));
break;
} else if (cause.getMessage().contains("given object has a null identifier")) {
LogUtils.warnf(
this,
"Null identifier on object, class: %s: %s",
m_entityClass.getName(),
entity.toString());
break;
}
// }
cause = cause.getCause();
}
}
/** 取得对象的主键名,辅助函数. */
public String getIdName(Class<T> clazz) {
Assert.notNull(clazz);
ClassMetadata meta = getSessionFactory().getClassMetadata(clazz);
Assert.notNull(meta, "Class " + clazz + " not define in hibernate session factory.");
String idName = meta.getIdentifierPropertyName();
Assert.hasText(idName, clazz.getSimpleName() + " has no identifier property define.");
return idName;
}
/**
* 取得对象的主键名,辅助函数.
*
* @param entityClass 实体类型
* @return 主键名称
*/
public String getIdName(Class entityClass) {
Assert.notNull(entityClass);
entityClass = ReflectUtils.getOriginalClass(entityClass);
ClassMetadata meta = this.getSessionFactory().getClassMetadata(entityClass);
Assert.notNull(meta, "Class " + entityClass + " not define in hibernate session factory.");
String idName = meta.getIdentifierPropertyName();
Assert.hasText(idName, entityClass.getSimpleName() + " has no identifier property define.");
return idName;
}
@Override
public void delete(long id) {
String entityName = entityClassMetadata.getEntityName();
String idPropertyName = entityClassMetadata.getIdentifierPropertyName();
String hqlDeleteQuery =
new StringBuffer()
.append("delete ")
.append(entityName)
.append(" where ")
.append(idPropertyName)
.append(" = :id")
.toString();
Query deleteQuery = getCurrentSession().createQuery(hqlDeleteQuery);
deleteQuery.setParameter("id", id);
deleteQuery.executeUpdate();
}
private void addChildExampleCriteria(Object exampleInstance, Criteria criteria, Session sesion) {
ClassMetadata metadata =
sesion.getSessionFactory().getClassMetadata(exampleInstance.getClass());
String[] propertyNames = metadata.getPropertyNames();
Type[] propertyTypes = metadata.getPropertyTypes();
// see if this example instance has any properties that are entities
for (int i = 0; i < propertyNames.length; i++) {
String propertyName = propertyNames[i];
Type propertyType = propertyTypes[i];
if (propertyType instanceof EntityType) {
// this property is an association - Hibernate's Example ignores
// these
Object value = metadata.getPropertyValue(exampleInstance, propertyName, EntityMode.POJO);
if (value != null) {
ClassMetadata childMetadata =
sesion.getSessionFactory().getClassMetadata(value.getClass());
Criteria childCriteria = criteria.createCriteria(propertyName);
if (childMetadata.hasIdentifierProperty()) {
Object id = childMetadata.getIdentifier(value, EntityMode.POJO);
if (id != null) {
// add the identifier to the child criteria
childCriteria.add(Restrictions.eq(childMetadata.getIdentifierPropertyName(), id));
}
}
// add the entity's fields as Example fields
childCriteria.add(Example.create(value));
// add this entity's associations
addChildExampleCriteria(value, childCriteria, sesion);
}
}
} // ~for
}
/** 取得对象的主键名. */
public String getIdName() {
ClassMetadata meta = getSessionFactory().getClassMetadata(entityClass);
return meta.getIdentifierPropertyName();
}
/** 取得对象的主键名. */
public String getIdName() {
ClassMetadata meta = getSessionFactory().getClassMetadata(entityClass);
Assert.notNull(
meta, "Class " + entityClass.getSimpleName() + " not define in HibernateSessionFactory.");
return meta.getIdentifierPropertyName();
}
