/*
 * Copyright (c) 2005, 2006 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 - initial API and implementation
 *
 * $Id: DurationConstraint.java,v 1.6 2006/05/12 20:38:05 khussey Exp $
 */
package org.eclipse.uml2.uml;

import java.util.Map;

import org.eclipse.emf.common.util.DiagnosticChain;
import org.eclipse.emf.common.util.EList;

/**
 * <!-- begin-user-doc -->
 * A representation of the model object '<em><b>Duration Constraint</b></em>'.
 * <!-- end-user-doc -->
 *
 * <!-- begin-model-doc -->
 * A duration constraint is a constraint that refers to a duration interval.
 * <!-- end-model-doc -->
 *
 * <p>
 * The following features are supported:
 * <ul>
 *   <li>{@link org.eclipse.uml2.uml.DurationConstraint#getFirstEvents <em>First Event</em>}</li>
 * </ul>
 * </p>
 *
 * @see org.eclipse.uml2.uml.UMLPackage#getDurationConstraint()
 * @model
 * @generated
 */
public interface DurationConstraint
		extends IntervalConstraint {

	/**
	 * Returns the value of the '<em><b>First Event</b></em>' attribute list.
	 * The list contents are of type {@link java.lang.Boolean}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * The value of firstEvent[i] is related to constrainedElement[i] (where i is 1 or 2). If firstEvent[i] is true, then the corresponding observation event is the first time instant the execution enters constrainedElement[i]. If firstEvent[i] is false, then the corresponding observation event is the last time instant the execution is within constrainedElement[i]. Default value is true applied when constrainedElement[i] refers an element that represents only one time instant.
	 * <!-- end-model-doc -->
	 * @return the value of the '<em>First Event</em>' attribute list.
	 * @see org.eclipse.uml2.uml.UMLPackage#getDurationConstraint_FirstEvent()
	 * @model type="boolean" default="true" dataType="org.eclipse.uml2.uml.Boolean" upper="2" ordered="false"
	 * @generated
	 */
	EList getFirstEvents();

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * The multiplicity of firstEvent must be 2 if the multiplicity of constrainedElement is 2. Otherwise the multiplicity of firstEvent is 0.
	 * if (constrainedElement->size() =2)
	 *   then (firstEvent->size() = 2) else (firstEvent->size() = 0)
	 * <!-- end-model-doc -->
	 * @model
	 * @generated
	 */
	boolean validateFirstEventMultiplicity(DiagnosticChain diagnostics,
			Map context);

} // DurationConstraint