org.granite.grails.integration.GrailsClassGetter.java Source code

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Here is the source code for org.granite.grails.integration.GrailsClassGetter.java

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/*
  GRANITE DATA SERVICES
  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
    
  This file is part of Granite Data Services.
    
  Granite Data Services is free software; you can redistribute it and/or modify
  it under the terms of the GNU Library General Public License as published by
  the Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.
    
  Granite Data Services is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
  for more details.
    
  You should have received a copy of the GNU Library General Public License
  along with this library; if not, see <http://www.gnu.org/licenses/>.
*/

package org.granite.grails.integration;

import java.util.List;

import javax.servlet.ServletContext;

import org.codehaus.groovy.grails.commons.GrailsApplication;
import org.codehaus.groovy.grails.plugins.GrailsPluginManager;
import org.granite.context.GraniteContext;
import org.granite.datanucleus.DataNucleusClassGetter;
import org.granite.hibernate.HibernateClassGetter;
import org.granite.messaging.amf.io.util.ClassGetter;
import org.granite.messaging.amf.io.util.DefaultClassGetter;
import org.granite.messaging.webapp.HttpGraniteContext;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 * @author William Dra
 */
public class GrailsClassGetter extends DefaultClassGetter {

    private GrailsApplication grailsApplication;
    private ClassGetter delegate;

    private ClassGetter getDelegate() {
        if (delegate == null) {
            GraniteContext context = GraniteContext.getCurrentInstance();
            ServletContext sc = ((HttpGraniteContext) context).getServletContext();
            ApplicationContext springContext = WebApplicationContextUtils.getRequiredWebApplicationContext(sc);

            grailsApplication = (GrailsApplication) springContext.getBean("grailsApplication");
            GrailsPluginManager manager = (GrailsPluginManager) springContext.getBean("pluginManager");

            if (manager.hasGrailsPlugin("app-engine"))
                delegate = new DataNucleusClassGetter();
            else
                delegate = new HibernateClassGetter();
        }
        return delegate;
    }

    @Override
    public List<Object[]> getFieldValues(Object obj, Object dest) {
        return getDelegate().getFieldValues(obj, dest);
    }

    @Override
    public void initialize(Object owner, String propertyName, Object propertyValue) {
        getDelegate().initialize(owner, propertyName, propertyValue);
    }

    @Override
    public Class<?> getClass(Object o) {
        return getDelegate().getClass(o);
    }

    @Override
    public boolean isEntity(Object o) {
        return grailsApplication.isArtefactOfType("Domain", o.getClass());
    }

    @Override
    public boolean isInitialized(Object owner, String propertyName, Object propertyValue) {
        return getDelegate().isInitialized(owner, propertyName, propertyValue);
    }
}