com.opencnc.util.HibernateProxyTypeAdapter.java Source code

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Here is the source code for com.opencnc.util.HibernateProxyTypeAdapter.java

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package com.opencnc.util;

import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.TypeAdapterFactory;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import java.io.IOException;
import org.hibernate.proxy.HibernateProxy;

/**
 *
 * @author root
 */
public class HibernateProxyTypeAdapter extends TypeAdapter<HibernateProxy> {

    public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
        @Override
        @SuppressWarnings("unchecked")
        public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
            return (HibernateProxy.class.isAssignableFrom(type.getRawType())
                    ? (TypeAdapter<T>) new HibernateProxyTypeAdapter(
                            (TypeAdapter) gson.getAdapter(TypeToken.get(type.getRawType().getSuperclass())))
                    : null);
        }
    };
    private final TypeAdapter<Object> delegate;

    private HibernateProxyTypeAdapter(TypeAdapter<Object> delegate) {
        this.delegate = delegate;
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    @Override
    public void write(JsonWriter out, HibernateProxy value) throws IOException {
        if (value == null) {
            out.nullValue();
            return;
        }
        delegate.write(out, ((HibernateProxy) value).getHibernateLazyInitializer().getImplementation());
    }

    @Override
    public HibernateProxy read(JsonReader in) throws IOException {
        throw new UnsupportedOperationException("Not supported");
    }
}