DuplicateExternalPropertyIDConstraint.java

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 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 *
 * This file is part of REDHAWK IDE.
 *
 * 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
 *******************************************************************************/
package gov.redhawk.sca.sad.validation;

import mil.jpeojtrs.sca.sad.ExternalProperty;
import mil.jpeojtrs.sca.sad.SoftwareAssembly;
import mil.jpeojtrs.sca.util.ScaEcoreUtils;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.validation.AbstractModelConstraint;
import org.eclipse.emf.validation.IValidationContext;

/**
 * @since 2.0
 * 
 */
public class DuplicateExternalPropertyIDConstraint extends AbstractModelConstraint {

	/**
	 * 
	 */
	public DuplicateExternalPropertyIDConstraint() {
		// TODO Auto-generated constructor stub
	}

	/* (non-Javadoc)
	 * @see org.eclipse.emf.validation.AbstractModelConstraint#validate(org.eclipse.emf.validation.IValidationContext)
	 */
	@Override
	public IStatus validate(IValidationContext ctx) {
		final EObject target = ctx.getTarget();

		if (target instanceof ExternalProperty) {
			return validateProperty((ExternalProperty) target, ctx);
		}
		return ctx.createSuccessStatus();
	}

	public static boolean validateProperty(ExternalProperty prop, SoftwareAssembly sad) {
		String id = prop.resolveExternalID();
		if (id == null) {
			return true;
		}
		if (sad.getExternalProperties() != null) {
			for (ExternalProperty p : sad.getExternalProperties().getProperties()) {
				if (p == prop) {
					continue;
				}
				String id2 = p.resolveExternalID();
				if (id.equals(id2)) {
					return false;
				}
			}
		}
		return true;
	}

	private IStatus validateProperty(ExternalProperty prop, IValidationContext ctx) {
		SoftwareAssembly sad = ScaEcoreUtils.getEContainerOfType(prop, SoftwareAssembly.class);
		if (!validateProperty(prop, sad)) {
			String id = prop.resolveExternalID();
			return ctx.createFailureStatus(id);
		}

		return ctx.createSuccessStatus();
	}

}