net.smartlab.web.EnterpriseDomain Maven / Gradle / Ivy

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/*
 * The SmartWeb Framework
 * Copyright (C) 2004-2006
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * For further informations on the SmartWeb Framework please visit
 *
 *                        http://smartweb.sourceforge.net
 */
package net.smartlab.web;

import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.rmi.RemoteException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Set;

import javax.ejb.EJBObject;
import javax.ejb.SessionBean;

/**
 * @TODO documentation
 * @author [email protected]
 */
public abstract class EnterpriseDomain implements SessionBean {

	private static final long serialVersionUID = -2893852982428251155L;


	public static class RequestContext implements Serializable {

		private static final long serialVersionUID = 2724059707578588014L;

		/**
		 * Attributes container.
		 */
		private HashMap attributes = new HashMap();


		public boolean contains(String key) {
			return attributes.containsKey(key);
		}

		public Set getAttributeNames() {
			return attributes.keySet();
		}

		public Serializable setAttribute(String key, Serializable value) {
			return (Serializable)attributes.put(key, value);
		}

		public Serializable removeAttribute(String key) {
			return (Serializable)attributes.remove(key);
		}

		public int size() {
			return attributes.size();
		}

		public Collection getAttributesMap() {
			return attributes.values();
		}
	}


	public Object execute(String method, Object[] arguments, String[] types, EnterpriseDomain.RequestContext context)
			throws RemoteException, InvocationTargetException {
		try {
			Domain.context.set(context);
			return this.getClass().getMethod(method, EnterpriseDomain.forNames(types)).invoke(this, arguments);
		} catch (IllegalArgumentException iae) {
			throw new InvocationTargetException(iae);
		} catch (IllegalAccessException iae) {
			throw new InvocationTargetException(iae);
		} catch (NoSuchMethodException nsme) {
			throw new InvocationTargetException(nsme);
		} catch (ClassNotFoundException cnfe) {
			throw new InvocationTargetException(cnfe);
		} finally {
			try {
				BusinessObjectFactory.close();
			} catch (DAOException daoe) {
				throw new InvocationTargetException(daoe);
			}
		}
	}

	protected static RequestContext getContext() {
		return (RequestContext)Domain.context.get();
	}

	/**
	 * Get the classes from names.  argTypes is not null.
	 * 
	 * @param argTypes The method argument classes' names
	 * @return ClassNotFoundException if any class can not be located
	 */
	private static Class[] forNames(String[] argTypes) throws ClassNotFoundException {
		if (argTypes == null) {
			return null;
		}
		Class[] result = new Class[argTypes.length];
		for (int i = 0; i < argTypes.length; i++) {
			if (EnterpriseDomainBuilder.primitives.containsKey(argTypes[i])) {
				result[i] = (Class)EnterpriseDomainBuilder.primitives.get(argTypes[i]);
			} else {
				result[i] = Class.forName(argTypes[i]);
			}
		}
		return result;
	}


	/**
	 * @TODO documentation
	 * @author [email protected]
	 */
	public static interface Remote extends EJBObject {

		/**
		 * @TODO documentation
		 * @param method
		 * @param arguments
		 * @param types
		 * @param context
		 * @return
		 * @throws RemoteException
		 */
		public Object execute(String method, Object[] arguments, String[] types,
				EnterpriseDomain.RequestContext context) throws RemoteException;
	}
}