org.nakedobjects.plugins.html.context.TransientObjectMapping Maven / Gradle / Ivy

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package org.nakedobjects.plugins.html.context;

import org.nakedobjects.metamodel.adapter.NakedObject;
import org.nakedobjects.metamodel.adapter.oid.Oid;
import org.nakedobjects.metamodel.adapter.version.Version;
import org.nakedobjects.metamodel.commons.debug.DebugString;
import org.nakedobjects.metamodel.commons.ensure.Assert;
import org.nakedobjects.runtime.context.NakedObjectsContext;
import org.nakedobjects.runtime.memento.Memento;
import org.nakedobjects.runtime.persistence.PersistenceSession;
import org.nakedobjects.runtime.persistence.adaptermanager.AdapterManager;


public class TransientObjectMapping implements ObjectMapping {
    private final Oid oid;
    private final Memento memento;

    public TransientObjectMapping(final NakedObject adapter) {
        oid = adapter.getOid();
        Assert.assertTrue("OID is for persistent", oid.isTransient());
        Assert.assertTrue("adapter is for persistent", adapter.isTransient());
        memento = new Memento(adapter);
    }

    public void debug(final DebugString debug) {
        memento.debug(debug);
    }

    public Oid getOid() {
        return oid;
    }

    public NakedObject getObject() {
        return getAdapterManager().getAdapterFor(oid);
    }

    @Override
    public int hashCode() {
        return oid.hashCode();
    }

    @Override
    public boolean equals(final Object obj) {
        if (obj instanceof TransientObjectMapping) {
            return ((TransientObjectMapping) obj).oid.equals(oid);
        }
        return false;
    }

    @Override
    public String toString() {
        return "TRANSIENT : " + oid + " : " + memento;
    }

    public Version getVersion() {
        return null;
    }

    public void checkVersion(final NakedObject object) {}

    public void restoreToLoader() {
        memento.recreateObject();
    }

    public void updateVersion() {}


    
    //////////////////////////////////////////////////////////////
    // Dependencies (from context)
    //////////////////////////////////////////////////////////////
    
    
    private AdapterManager getAdapterManager() {
        return getPersistenceSession().getAdapterManager();
    }

    private PersistenceSession getPersistenceSession() {
        return NakedObjectsContext.getPersistenceSession();
    }


}

// Copyright (c) Naked Objects Group Ltd.