EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.remote.dto.assembler.converter;

import java.beans.PropertyDescriptor;

import java.lang.reflect.Method;

import net.sf.dozer.util.mapping.MapperIF;

import net.sf.dozer.util.mapping.MappingException;

import net.sf.dozer.util.mapping.converters.ConfigurableCustomConverter;

import org.hibernate.Hibernate;

import org.springframework.beans.BeanUtils;

import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import eu.etaxonomy.cdm.model.common.CdmBase;

public class HibernateProxyNullSafeDeepConverter implements ConfigurableCustomConverter, ApplicationContextAware {

	private MapperIF mapper;

	private ApplicationContext applicationContext;

	protected MapperIF getMapper() {

		if(mapper == null) {

			this.setMapper((MapperIF)this.applicationContext.getBean("dozerMapper", MapperIF.class)); 

		}

		return mapper;

	}

	public void setMapper(MapperIF mapper) {

		this.mapper = mapper;

	}

	public Object convert(Object destination, Object source, Class destClass, Class sourceClass, String arg) {

		if (source == null || !Hibernate.isInitialized(source)) {

		    return null;

	    } else {

	    	try {

	    		PropertyDescriptor propertyDescriptor = BeanUtils.getPropertyDescriptor(sourceClass, arg);

	    		Method method = propertyDescriptor.getReadMethod();

	    		method.setAccessible(true);	    		

	    		assert method != null;

	    		Object value = method.invoke(source);

	    		if(value == null || !Hibernate.isInitialized(value)) {

	    		    return null;

	    		} else {

	    			if(value instanceof CdmBase) {

	    			return getMapper().map(value, destClass);

	    			} else {

	    				return value;

	    		}

	    		}

			} catch (Exception e) {

				throw new MappingException("Converter HibernateProxyNullSafeDeepConverter used incorrectly. Arguments passed in were:"+ destination + " and " + source + " sourceClass " + sourceClass + " destClass " + destClass, e);

			} 

		} 

	}

	public void setApplicationContext(ApplicationContext applicationContext)

			throws BeansException {

		this.applicationContext = applicationContext;

	}

}