/*
 * Copyright (c) 2005, 2007 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: MergeNode.java,v 1.4 2007/04/25 17:47:04 khussey Exp $
 */
package org.eclipse.uml2.uml;

import java.util.Map;

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

/**
 * <!-- begin-user-doc -->
 * A representation of the model object '<em><b>Merge Node</b></em>'.
 * <!-- end-user-doc -->
 *
 * <!-- begin-model-doc -->
 * A merge node is a control node that brings together multiple alternate flows. It is not used to synchronize concurrent flows but to accept one among several alternate flows.
 * <!-- end-model-doc -->
 *
 *
 * @see org.eclipse.uml2.uml.UMLPackage#getMergeNode()
 * @model
 * @generated
 */
public interface MergeNode
		extends ControlNode {

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * A merge node has one outgoing edge.
	 * true
	 * @param diagnostics The chain of diagnostics to which problems are to be appended.
	 * @param context The cache of context-specific information.
	 * <!-- end-model-doc -->
	 * @model
	 * @generated
	 */
	boolean validateOneOutgoingEdge(DiagnosticChain diagnostics,
			Map<Object, Object> context);

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * The edges coming into and out of a merge node must be either all object flows or all control flows.
	 * true
	 * @param diagnostics The chain of diagnostics to which problems are to be appended.
	 * @param context The cache of context-specific information.
	 * <!-- end-model-doc -->
	 * @model
	 * @generated
	 */
	boolean validateEdges(DiagnosticChain diagnostics,
			Map<Object, Object> context);

} // MergeNode