Example usage for org.hibernate.proxy HibernateProxy writeReplace

Introduction

In this page you can find the example usage for org.hibernate.proxy HibernateProxy writeReplace.

Prototype

public Object writeReplace();

Source Link

Document

Perform serialization-time write-replacement of this proxy.

Usage

From source file:org.ambraproject.rhino.util.JsonAdapterUtil.java

License:Open Source License

/**
 * If the object is a lazy-loaded HibernateProxy, force it to be replaced with its actual write-replacement. This can
 * be used to work around Hibernate optimizations that disrupt Gson's automatic serialization.
 * <p/>//from   www  . j  a  v a 2 s.  co m
 * This may incur extra performance costs if the full object would not have otherwise been read.
 *
 * @param object     a Hibernate model entity, which may be lazy-loaded
 * @param classToken the model type
 * @param <T>        the model type
 * @return a non-lazy-loading instance of the entity
 * @see org.hibernate.proxy.HibernateProxy#writeReplace()
 */
public static <T> T forceHibernateLazyLoad(T object, Class<T> classToken) {
    Preconditions.checkNotNull(classToken);
    if (object instanceof HibernateProxy) {
        HibernateProxy hibernateProxy = (HibernateProxy) object;
        return classToken.cast(hibernateProxy.writeReplace());
    }
    return object;
}

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From source file:org.granite.hibernate.jmf.EntityCodec.java

License:Open Source License

public void encode(ExtendedObjectOutput out, Object v)
        throws IOException, IllegalAccessException, InvocationTargetException {
    String detachedState = null;//from www .ja v a 2s .  c o  m

    if (v instanceof HibernateProxy) {
        HibernateProxy proxy = (HibernateProxy) v;

        // Only write initialized flag, detachedState & id if v is an uninitialized proxy.
        if (proxy.getHibernateLazyInitializer().isUninitialized()) {

            Class<?> persistentClass = proxy.getHibernateLazyInitializer().getPersistentClass();
            if (!serializableProxyAdapters.containsKey(persistentClass)) {
                try {
                    SerializableProxyAdapter proxyAdapter = new SerializableProxyAdapter(proxy.writeReplace());
                    serializableProxyAdapters.putIfAbsent(persistentClass, proxyAdapter);
                } catch (Exception e) {
                    throw new IOException("Could not create SerializableProxyAdapter for: " + proxy);
                }
            }

            Serializable id = proxy.getHibernateLazyInitializer().getIdentifier();
            log.debug("Writing uninitialized HibernateProxy %s with id %s", detachedState, id);

            out.writeBoolean(false);
            out.writeUTF(null);
            out.writeObject(id);
            return;
        }

        // Proxy is initialized, get the underlying persistent object.
        log.debug("Writing initialized HibernateProxy...");
        v = proxy.getHibernateLazyInitializer().getImplementation();
    }

    // Write initialized flag & detachedState.
    out.writeBoolean(true);
    out.writeUTF(null);

    // Write all fields in lexical order. 
    List<Property> fields = out.getReflection().findSerializableFields(v.getClass());
    for (Property field : fields)
        out.getAndWriteField(v, field);
}

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