/*******************************************************************************
 * Copyright (c) 2001, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.model.internal.validation;

import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.eclipse.jem.internal.java.adapters.JavaReflectionAdaptor;
import org.eclipse.jem.java.JavaClass;
import org.eclipse.jem.java.JavaHelpers;
import org.eclipse.jem.java.Method;
import org.eclipse.jem.java.TypeKind;
import org.eclipse.jst.j2ee.ejb.EnterpriseBean;
import org.eclipse.wst.validation.internal.core.ValidationException;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;


/**
 * @version 	1.0
 * @author
 */
public abstract class AComponentVRule extends AInterfaceTypeVRule {
	public Object getTarget(Object parent, Object clazz) {
		if(parent == null) {
			return null;
		}

		if((isRemote() & REMOTE) == REMOTE) {
			return ((EnterpriseBean)parent).getRemoteInterface();
		}
		return ((EnterpriseBean)parent).getLocalInterface();
	}
	
	public long getDefaultMethodType() {
		return BUSINESS;
	}
	
	@Override
	public long[] getBaseTypes() {
		return getSupertypes();
	}
	
	public void validate(IEJBValidationContext vc, EnterpriseBean bean, JavaClass clazz) throws ValidationCancelledException, InvalidInputException, ValidationException {
		if(!followRMI_IIOPInheritanceRules(bean, clazz)) {
			// IWAD4057 = {0} must follow RMI-IIOP rules for remote interfaces. Read section 7.10.5 of the EJB 2.0 specification.
			// IWAD4210 = {0} must follow RMI-IIOP rules for remote interfaces. Read section 10.6.9 of the EJB 2.0 specification.
			// IWAD4326 = {0} must follow RMI-IIOP rules for remote interfaces. Read section 12.2.8 of the EJB 2.0 specification.
			IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2468, IEJBValidationContext.INFO, bean, clazz, this);
			vc.addMessage(message);
		}
		
		validateAppendixB(vc, bean, clazz);
	}
	
	@Override
	public void validate(IEJBValidationContext vc, EnterpriseBean bean, JavaClass clazz, Method method, List[] methodsExtendedLists) throws ValidationCancelledException, InvalidInputException, ValidationException {
		super.validate(vc, bean, clazz, method, methodsExtendedLists); // check application exceptions
		
		if(isEJBInterfaceMethod(bean, method)) {
			// IWAD4021 = {0} is provided by the container. Read section 6.5 of the EJB 2.0 specification.
			// IWAD4110 = {0} is provided by the container. Read section 9.9 of the EJB 2.0 specification.
			// IWAD4112 = {0} is provided by the container. Read section 9.10 of the EJB 2.0 specification.
			IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2469, IEJBValidationContext.INFO, bean, clazz, method, this);
			vc.addMessage(message);
		}
		
		Method match = ValidationRuleUtility.getMethod(method, method.getName(), getBeanClassMethodsExtended(methodsExtendedLists));
		if(match == null) {
			// IWAD4058 = {0} must exist on {1}. Read section 7.10.5 of the EJB 2.0 specificiation.
			// IWAD4070 = {0} must exist on {1}. Read section 7.10.7 of the EJB 2.0 specification.
			// IWAD4327 = {0} must exist on {1}. Read section 12.2.8 of the EJB 2.0 specification.
			// IWAD4354 = {0} must exist on {1}. Read section 12.2.10 of the EJB 2.0 specification.
			// IWAD4211 = {0} must exist on {1}. Read section 10.6.9 of the EJB 2.0 specification.
			// IWAD4227 = {0} must exist on {1}. Read section 10.6.11 of the EJB 2.0 specification.
			IMessage message = MessageUtility.getUtility().getMessage(vc, IEJBValidatorMessageConstants.CHKJ2023, IEJBValidationContext.ERROR, bean, clazz, method, new String[]{method.getMethodElementSignature(), bean.getEjbClass().getJavaName()}, this);
			vc.addMessage(message);
		}
		else {
			if(!ValidationRuleUtility.isAssignableFrom(method.getReturnType(), match.getReturnType())) {
				// IWAD4212 = This method must return the same type as {0}. Read section 10.6.9 of the EJB 2.0 specification.
				// IWAD4228 = This method must return the same type as {0}. Read section 10.6.11 of the EJB 2.0 specification.
				// IWAD4328 = This method must return the same type as {0} on {1}. Read section 12.2.8 of the EJB 2.0 specification.
				// IWAD4355 = This method must return {0}. Read section 12.2.10 of the EJB 2.0 specification.
				
				boolean addMessage = true;
				
				//if the return type on the interface is resolvable and the match on the bean is not. flush the bean and recheck if it resolves
				JavaClass returnType = ValidationRuleUtility.getJavaClass(method.getReturnType());
				JavaClass beanReturnType = ValidationRuleUtility.getJavaClass(match.getReturnType());
				if (returnType != null  && beanReturnType != null && returnType.getKind() != TypeKind.UNDEFINED_LITERAL && beanReturnType.getKind() == TypeKind.UNDEFINED_LITERAL) { 
					// bugzilla 274340 - EJB validation is using a stale JEM cache for bean class
					JavaReflectionAdaptor adapter = (JavaReflectionAdaptor) JavaReflectionAdaptor.retrieveAdaptorFrom(bean.getEjbClass());
					adapter.flushReflectedValuesIfNecessary(true);
					if (ValidationRuleUtility.getMethodExtended(bean.getEjbClass(), method.getName(), method.listParametersWithoutReturn(), method.getReturnType()) != null) {
						addMessage = false;
					}
				}	
				if (addMessage) {
					IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2470, IEJBValidationContext.ERROR, bean, clazz, method, new String[]{match.getReturnType().getJavaName()}, this);
					vc.addMessage(message);
				}
			}
			
			Set exceptions = ValidationRuleUtility.getNotSubsetExceptions(bean, match, method);
			Iterator eiterator = exceptions.iterator();
			while(eiterator.hasNext()) {
				JavaClass exception = (JavaClass)eiterator.next();
				IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2471, IEJBValidationContext.WARNING, bean, clazz, method, new String[]{exception.getJavaName(), match.getMethodElementSignature()}, this);
				vc.addMessage(message);
			}
		}
		
		if(!followRemoteExceptionRules(bean, method)) {
			// IWAD4056 = This method must throw java.rmi.RemoteException. Read section 7.10.5 of the EJB 2.0 specification.
			// IWAD4069 = This method must not throw java.rmi.RemoteException. Read section 7.10.7, 18.3.8, 18.6 of the EJB 2.0 specification.
			// IWAD4325 = This method must throw java.rmi.RemoteException. Read section 12.2.8 of the EJB 2.0 specification.
			// IWAD4353 = This method must not throw java.rmi.RemoteException. Read section 12.2.10, 18.3.8, 18.6 of the EJB 2.0 specification.
			// IWAD4209 = This method must throw java.rmi.RemoteException. Read section 10.6.9 of the EJB 2.0 specification.
			IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2503_bus, getMessageRemoteExceptionSeverity(), bean, clazz, method, this);
			vc.addMessage(message);
		}
		
		// IWAD4055 = {0} must be a legal type for RMI-IIOP. Read section 7.10.5 of the EJB 2.0 specification.
		// IWAD4208 = {0} must be a legal type for RMI-IIOP. Read section 10.6.9 of the EJB 2.0 specification.
		// IWAD4324 = {0} must be a legal type for RMI-IIOP. Read section 12.2.8 of the EJB 2.0 specification.
		validateRMI_IIOPTypeRules(vc, bean, clazz, method, methodsExtendedLists, true);
		
		JavaHelpers oe = getOverExposedLocalType(bean, clazz, method);
		if(oe != null) {
			// IWAD4059 = This method must not expose the {0} type. Read section 7.10.5 of the EJB 2.0 specification.
			// IWAD4107 = This method must not expose the {0} type. Read section 9.7.2 of the EJB 2.0 specification.
			// IWAD4330 = This method must not expose the {0} type. Read section 12.2.8 of the EJB 2.0 specification.
			// IWAD4128 = This method must not expose the {0} type. Read section 10.3.1, 10.3.10.1 of the EJB 2.0 specification.
			IMessage message = MessageUtility.getUtility().getMessage(vc, IMessagePrefixEjb20Constants.CHKJ2472, IEJBValidationContext.INFO, bean, clazz, method, new String[]{oe.getQualifiedName()}, this);
			vc.addMessage(message);
		}
	}
	
	protected void validateAppendixB(IEJBValidationContext vc, EnterpriseBean bean, JavaClass thisComponent) {
		// The Java inheritance structure must match the EJB inheritance structure.
		// e.g. if EJB B is a child of EJB A, then class B must be a child of class A.
		// B could be a grandchild (or great-grandchild or ...) of A.
		if(bean == null) {
			return;
		}
		EnterpriseBean supertype = getSuperType(bean);
		JavaClass parentComponent = null;
		if (supertype != null) {
			parentComponent = getComponentInterface(supertype);

			if(parentComponent == null) {
				// child uses either local, or remote, but not both interfaces
				return;
			}
			
			// Component a Xchild of parent Component
			try {
				ValidationRuleUtility.isValidType(thisComponent);
				ValidationRuleUtility.isValidType(parentComponent);
				if (!ValidationRuleUtility.isAssignableFrom(thisComponent, parentComponent)) {
					String[] msgParm = new String[] { thisComponent.getQualifiedName(), parentComponent.getQualifiedName()};
					IMessage message = MessageUtility.getUtility().getMessage(vc, IEJBValidatorMessageConstants.CHKJ2105, IEJBValidationContext.ERROR, bean, thisComponent, msgParm, this);
					vc.addMessage(message);
				}
			}
			catch (InvalidInputException e) {
				String[] msgParm = { e.getJavaClass().getQualifiedName(), bean.getName()};
				IMessage message = MessageUtility.getUtility().getMessage(vc, IEJBValidatorMessageConstants.CHKJ2849, IEJBValidationContext.WARNING, bean, msgParm, this);
				vc.addMessage(message);
			}
		}
		
//		validateAppendixB(vc, supertype, parentComponent);
	}
}