| /******************************************************************************* |
| * Copyright (c) 2010, 2016 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 |
| * E.D.Willink - rework of LPG OCL Console for Xtext |
| *******************************************************************************/ |
| |
| package org.eclipse.ocl.examples.xtext.console; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.resource.ResourceSet; |
| import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl; |
| import org.eclipse.emf.ecore.xmi.XMLResource; |
| import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl; |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.ocl.pivot.OCLExpression; |
| |
| |
| /** |
| * A resource for loading and saving OCL expressions. |
| */ |
| public class OCLResource |
| extends XMIResourceImpl { |
| |
| private static Map<String, Object> saveOptions = new java.util.HashMap<String, Object>(); |
| |
| static { |
| saveOptions.put(XMLResource.OPTION_SAVE_TYPE_INFORMATION, true); |
| } |
| |
| /** |
| * Initializes me with my URI. |
| * |
| * @param uri my URI |
| */ |
| public OCLResource(URI uri) { |
| super(uri); |
| } |
| |
| @Override |
| protected boolean useIDs() { |
| return true; |
| } |
| |
| @Override |
| protected boolean useUUIDs() { |
| return true; |
| } |
| |
| /** |
| * Loads an OCL expression from the specified <code>path</code>. The |
| * OCL expression is converted to a string using a custom AST visitor that |
| * renders the string representation. |
| * |
| * @param path the absolute path of the XMI file to load |
| * @return the string representation of the OCL expression, if found |
| * @throws IOException if anything goes wrong in loading the XMI file |
| */ |
| public static String load(String path) throws IOException { |
| String result = null; |
| |
| ResourceSet rset = new ResourceSetImpl(); |
| |
| // create and load the resource |
| OCLResource res = new OCLResource(URI.createFileURI(path)); |
| rset.getResources().add(res); |
| |
| res.load(Collections.EMPTY_MAP); |
| |
| OCLExpression expr = res.getOCLExpression(); |
| if (expr != null) { |
| result = expr.toString(); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Saves the specified OCL expression to an XMI file. |
| * |
| * @param path the fully-qualified path of the XMI file to save |
| * @param document the current OCL document |
| * @param expression the expression to save |
| * |
| * @throws RuntimeException if anything goes wrong in parsing |
| * @throws IOException if anything goes wrong in saving |
| * @throws OCLParsingException if anything goes wrong in parsing |
| * |
| public static void save(String path, OCLDocument document, String expression) |
| throws IOException, ParserException { |
| final OCLResource res = new OCLResource(URI.createFileURI(path)); |
| |
| // create an OCL helper to do our parsing |
| OCL ocl = document.getOCLFactory().createOCL(document.getModelingLevel(), res); |
| OCLHelper helper = ocl.createOCLHelper(); |
| |
| // set our helper's context classifier to parse against it |
| ConstraintKind kind = document.getModelingLevel().setContext( |
| helper, document.getOCLContext(), document.getOCLFactory()); |
| |
| OCLExpression parsed = null; |
| |
| switch (document.getModelingLevel()) { |
| case M2: |
| parsed = helper.createQuery(expression); |
| break; |
| case M1: |
| Object constraint = helper.createConstraint(kind, expression); |
| parsed = ocl.getEnvironment().getUMLReflection().getSpecification( |
| constraint).getBodyExpression(); |
| break; |
| } |
| |
| // add the AST to the resource and save it |
| res.setOCLExpression(parsed); |
| |
| res.save(saveOptions); |
| } */ |
| |
| /** |
| * Sets my contents to the specified OCL expression. |
| * |
| * @param expr an OCL expression |
| */ |
| public void setOCLExpression(@NonNull OCLExpression expr) { |
| // add my expression as the first root, because I already contain |
| // variables and EPackages defining dynamically-generated types |
| getContents().add(0, expr); |
| } |
| |
| /** |
| * Obtains the OCL expression that I store. |
| * |
| * @return my OCL expression |
| */ |
| public OCLExpression getOCLExpression() { |
| OCLExpression result = null; |
| |
| if (!getContents().isEmpty()) { |
| result = (OCLExpression) getContents().get(0); |
| } |
| |
| return result; |
| } |
| } |