/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

package constraints;

import helpers.MarkerManager;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.emf.validation.AbstractModelConstraint;

import org.eclipse.emf.validation.IValidationContext;

import cenrep.Access;

import cenrep.IAccessable;

import cenrep.Key;

import cenrep.Repository;

public class AccessExistanceConstraint extends AbstractModelConstraint {

	private final static String URL_POSTFIX ="#.7B.25element_ref.25.7D_does_not_have_any_read_capabilities";

	public AccessExistanceConstraint() {

	}

	public IStatus validate(IValidationContext ctx) {

		IAccessable accessable = (IAccessable)ctx.getTarget();

		Access rac = accessable.getReadAccess(); 

		if (rac==null || ((rac.getSid()==null || rac.getSid().trim().isEmpty()) &&  (rac.getCapabilities()==null || rac.getCapabilities().trim().isEmpty()))){

			if (accessable instanceof Key)

			{

				Key key = (Key)accessable;

				if (!checkRepositoryAccess(((Repository)key.eContainer()).getReadAccess()))

					return MarkerManager.getInstance().addProblem(ctx, ElementRefParser.getName(accessable),ElementRefParser.getName(accessable),URL_POSTFIX);

			}

			else if (accessable instanceof Repository)

				return MarkerManager.getInstance().addProblem(ctx, ElementRefParser.getName(accessable),ElementRefParser.getName(accessable),URL_POSTFIX);

		}

		return ctx.createSuccessStatus();

	}

	private boolean checkRepositoryAccess(Access rac)

	{

			if (rac==null || ((rac.getSid()==null || rac.getSid().trim().isEmpty()) &&  (rac.getCapabilities()==null || rac.getCapabilities().trim().isEmpty())))

				return false;

			return true;

	}

}