Example usage for org.hibernate.persister.entity EntityPersister createProxy

Introduction

In this page you can find the example usage for org.hibernate.persister.entity EntityPersister createProxy.

Prototype

Object createProxy(Serializable id, SharedSessionContractImplementor session) throws HibernateException;

Source Link

Document

Create a new proxy instance

Usage

From source file:com.autobizlogic.abl.data.hibernate.HibPersistentBeanCopy.java

License:Open Source License

/**
 * Create from a state array./*from w  ww .j  a  va2 s .  co  m*/
 * @param The state (typically from a Hibernate event)
 * @param pk The primary key
 * @param persister The persister for the object
 */
@SuppressWarnings("unchecked")
protected HibPersistentBeanCopy(Object[] state, Object entity, Serializable pk, EntityPersister persister,
        Session session) {
    if (entity instanceof Map)
        map = (Map<String, Object>) entity;
    else {
        bean = entity;
        beanMap = new BeanMap(entity);
    }
    this.pk = pk;
    this.metaEntity = MetaModelFactory.getHibernateMetaModel(persister.getFactory())
            .getMetaEntity(persister.getEntityName());

    ClassMetadata metadata = persister.getClassMetadata();
    String[] propNames = metadata.getPropertyNames();
    for (int i = 0; i < propNames.length; i++) {
        String propName = propNames[i];
        if (metaEntity.getMetaProperty(propName).isCollection())
            continue;

        MetaRole metaRole = metaEntity.getMetaRole(propName);
        if (metaRole == null) { // Not a relationship -- must be an attribute
            if (state[i] != null)
                values.put(propName, state[i]);
        } else if (!metaRole.isCollection()) {
            // In the case of old values, when we are handed the state, it contains the pk for associations,
            // and not (as you'd expect) the object itself. So we check whether the value is a real object,
            // and if it's not, we grab it from the object.
            if (state[i] == null || session.contains(state[i])) {
                values.put(propName, state[i]);
            } else {
                // We have a pk instead of a proxy -- ask Hibernate to create a proxy for it.
                String className = metadata.getPropertyType(propName).getReturnedClass().getName();
                PersistenceContext persContext = HibernateSessionUtil.getPersistenceContextForSession(session);
                EntityPersister entityPersister = HibernateSessionUtil.getEntityPersister(session, className,
                        bean);
                EntityKey entityKey = new EntityKey((Serializable) state[i], entityPersister,
                        session.getEntityMode());

                // Has a proxy already been created for this session?
                Object proxy = persContext.getProxy(entityKey);
                if (proxy == null) {
                    // There is no proxy anywhere for this object, so ask Hibernate to create one for us
                    proxy = entityPersister.createProxy((Serializable) state[i], (SessionImplementor) session);
                    persContext.getBatchFetchQueue().addBatchLoadableEntityKey(entityKey);
                    persContext.addProxy(entityKey, proxy);
                }
                values.put(propName, proxy);
            }
        }
    }
}

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