/*
 * 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: JoinNode.java,v 1.9 2006/12/14 15:49:27 khussey Exp $
 */
package org.eclipse.uml2.uml;

import java.util.Map;

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

import org.eclipse.emf.ecore.EClass;

/**
 * <!-- begin-user-doc -->
 * A representation of the model object '<em><b>Join Node</b></em>'.
 * <!-- end-user-doc -->
 *
 * <!-- begin-model-doc -->
 * A join node is a control node that synchronizes multiple flows.
 * Join nodes have a Boolean value specification using the names of the incoming edges to specify the conditions under which the join will emit a token.
 * <!-- end-model-doc -->
 *
 * <p>
 * The following features are supported:
 * <ul>
 *   <li>{@link org.eclipse.uml2.uml.JoinNode#isCombineDuplicate <em>Is Combine Duplicate</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.JoinNode#getJoinSpec <em>Join Spec</em>}</li>
 * </ul>
 * </p>
 *
 * @see org.eclipse.uml2.uml.UMLPackage#getJoinNode()
 * @model
 * @generated
 */
public interface JoinNode
		extends ControlNode {

	/**
	 * Returns the value of the '<em><b>Is Combine Duplicate</b></em>' attribute.
	 * The default value is <code>"true"</code>.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * Tells whether tokens having objects with the same identity are combined into one by the join.
	 * <!-- end-model-doc -->
	 * @return the value of the '<em>Is Combine Duplicate</em>' attribute.
	 * @see #setIsCombineDuplicate(boolean)
	 * @see org.eclipse.uml2.uml.UMLPackage#getJoinNode_IsCombineDuplicate()
	 * @model default="true" dataType="org.eclipse.uml2.uml.Boolean" required="true" ordered="false"
	 * @generated
	 */
	boolean isCombineDuplicate();

	/**
	 * Sets the value of the '{@link org.eclipse.uml2.uml.JoinNode#isCombineDuplicate <em>Is Combine Duplicate</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Is Combine Duplicate</em>' attribute.
	 * @see #isCombineDuplicate()
	 * @generated
	 */
	void setIsCombineDuplicate(boolean value);

	/**
	 * Returns the value of the '<em><b>Join Spec</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * A specification giving the conditions under which the join with emit a token. Default is "and".
	 * <!-- end-model-doc -->
	 * @return the value of the '<em>Join Spec</em>' containment reference.
	 * @see #setJoinSpec(ValueSpecification)
	 * @see org.eclipse.uml2.uml.UMLPackage#getJoinNode_JoinSpec()
	 * @model containment="true" resolveProxies="true" required="true" ordered="false"
	 * @generated
	 */
	ValueSpecification getJoinSpec();

	/**
	 * Sets the value of the '{@link org.eclipse.uml2.uml.JoinNode#getJoinSpec <em>Join Spec</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Join Spec</em>' containment reference.
	 * @see #getJoinSpec()
	 * @generated
	 */
	void setJoinSpec(ValueSpecification value);

	/**
	 * Creates a new {@link org.eclipse.uml2.uml.ValueSpecification}, with the specified '<em><b>Name</b></em>', and '<em><b>Type</b></em>', and sets the '<em><b>Join Spec</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param name The '<em><b>Name</b></em>' for the new {@link org.eclipse.uml2.uml.ValueSpecification}, or <code>null</code>.
	 * @param type The '<em><b>Type</b></em>' for the new {@link org.eclipse.uml2.uml.ValueSpecification}, or <code>null</code>.
	 * @param eClass The Ecore class of the {@link org.eclipse.uml2.uml.ValueSpecification} to create.
	 * @return The new {@link org.eclipse.uml2.uml.ValueSpecification}.
	 * @see #getJoinSpec()
	 * @generated
	 */
	ValueSpecification createJoinSpec(String name, Type type, EClass eClass);

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * A join node has one outgoing edge.
	 * self.outgoing->size() = 1
	 * <!-- end-model-doc -->
	 * @model
	 * @generated
	 */
	boolean validateOneOutgoingEdge(DiagnosticChain diagnostics,
			Map<Object, Object> context);

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * <!-- begin-model-doc -->
	 * If a join node has an incoming object flow, it must have an outgoing object flow, otherwise, it must have an outgoing control flow.
	 * (self.incoming.select(e | e.isTypeOf(ObjectFlow)->notEmpty() implies
	 *   self.outgoing.isTypeOf(ObjectFlow)) and
	 *     (self.incoming.select(e | e.isTypeOf(ObjectFlow)->empty() implies
	 *       self.outgoing.isTypeOf(ControlFlow))
	 * <!-- end-model-doc -->
	 * @model
	 * @generated
	 */
	boolean validateIncomingObjectFlow(DiagnosticChain diagnostics,
			Map<Object, Object> context);

} // JoinNode