public <T> T load(PersistenceContext context, Class<T> entityClass) {
log.debug("Loading entity of class {} using PersistenceContext {}", entityClass, context);
EntityMeta entityMeta = context.getEntityMeta();
Object primaryKey = context.getPrimaryKey();
Validator.validateNotNull(entityClass, "Entity class should not be null");
Validator.validateNotNull(
primaryKey, "Entity '%s' key should not be null", entityClass.getCanonicalName());
Validator.validateNotNull(
entityMeta, "Entity meta for '%s' should not be null", entityClass.getCanonicalName());
T entity = null;
if (entityMeta.isClusteredCounter()) {
entity = counterLoader.loadClusteredCounters(context);
} else {
Row row = context.loadEntity();
if (row != null) {
entity = entityMeta.instanciate();
mapper.setNonCounterPropertiesToEntity(row, entityMeta, entity);
}
}
return entity;
}
public <T> T createEmptyEntity(PersistenceContext context, Class<T> entityClass) {
log.debug("Loading entity of class {} using PersistenceContext {}", entityClass, context);
EntityMeta entityMeta = context.getEntityMeta();
Object primaryKey = context.getPrimaryKey();
Validator.validateNotNull(entityClass, "Entity class should not be null");
Validator.validateNotNull(
primaryKey, "Entity '%s' key should not be null", entityClass.getCanonicalName());
Validator.validateNotNull(
entityMeta, "Entity meta for '%s' should not be null", entityClass.getCanonicalName());
T entity = entityMeta.instanciate();
entityMeta.getIdMeta().setValueToField(entity, primaryKey);
return entity;
}
public void loadPropertyIntoObject(
PersistenceContext context, Object realObject, PropertyMeta pm) {
log.trace("Loading property {} into object {}", pm.getPropertyName(), realObject);
PropertyType type = pm.type();
if (type.isCounter()) {
counterLoader.loadCounter(context, realObject, pm);
} else {
Row row = context.loadProperty(pm);
mapper.setPropertyToEntity(row, pm, realObject);
}
}