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/*
* Copyright (c) 2005 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: Expression.java,v 1.1 2005/11/14 22:25:59 khussey Exp $
*/
package org.eclipse.uml2.uml;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
/**
* <!-- begin-user-doc -->
* A representation of the model object '<em><b>Expression</b></em>'.
* <!-- end-user-doc -->
*
* <!-- begin-model-doc -->
* An expression is a structured tree of symbols that denotes a (possibly empty) set of values when evaluated in a context.
* An expression represents a node in an expression tree, which may be non-terminal or terminal. It defines a symbol, and has a possibly empty sequence of operands which are value specifications.
* <!-- end-model-doc -->
*
* <p>
* The following features are supported:
* <ul>
* <li>{@link org.eclipse.uml2.uml.Expression#getSymbol <em>Symbol</em>}</li>
* <li>{@link org.eclipse.uml2.uml.Expression#getOperands <em>Operand</em>}</li>
* </ul>
* </p>
*
* @see org.eclipse.uml2.uml.UMLPackage#getExpression()
* @model
* @generated
*/
public interface Expression
extends ValueSpecification {
/**
* Returns the value of the '<em><b>Symbol</b></em>' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* <!-- begin-model-doc -->
* The symbol associated with the node in the expression tree.
* <!-- end-model-doc -->
* @return the value of the '<em>Symbol</em>' attribute.
* @see #setSymbol(String)
* @see org.eclipse.uml2.uml.UMLPackage#getExpression_Symbol()
* @model required="true" ordered="false"
* @generated
*/
String getSymbol();
/**
* Sets the value of the '{@link org.eclipse.uml2.uml.Expression#getSymbol <em>Symbol</em>}' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @param value the new value of the '<em>Symbol</em>' attribute.
* @see #getSymbol()
* @generated
*/
void setSymbol(String value);
/**
* Returns the value of the '<em><b>Operand</b></em>' containment reference list.
* The list contents are of type {@link org.eclipse.uml2.uml.ValueSpecification}.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* <!-- begin-model-doc -->
* Specifies a sequence of operands.
* <!-- end-model-doc -->
* @return the value of the '<em>Operand</em>' containment reference list.
* @see org.eclipse.uml2.uml.UMLPackage#getExpression_Operand()
* @model type="org.eclipse.uml2.uml.ValueSpecification" containment="true" resolveProxies="false"
* @generated
*/
List getOperands();
/**
* Creates a {@link org.eclipse.uml2.uml.ValueSpecification} and appends it to the '<em><b>Operand</b></em>' containment reference list.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @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 #getOperands()
* @generated
*/
ValueSpecification createOperand(EClass eClass);
/**
* Retrieves the {@link org.eclipse.uml2.uml.ValueSpecification} with the specified '<em><b>Name</b></em>' from the '<em><b>Operand</b></em>' containment reference list.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @param name The '<em><b>Name</b></em>' of the {@link org.eclipse.uml2.uml.ValueSpecification} to retrieve.
* @return The {@link org.eclipse.uml2.uml.ValueSpecification} with the specified '<em><b>Name</b></em>', or <code>null</code>.
* @see #getOperands()
* @generated
*/
ValueSpecification getOperand(String name);
} // Expression
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