| /******************************************************************************* |
| * Copyright (c) 2004-2008 Peter Pasztor, Akos Horvath, Gergely Varro, Istvan Rath and Daniel Varro |
| * 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: |
| * Peter Pasztor, Akos Horvath, Gergely Varro, Istvan Rath - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.viatra2.gtasm.interpreter.term.rules; |
| |
| |
| import org.eclipse.viatra2.core.IEntity; |
| import org.eclipse.viatra2.core.IModelElement; |
| import org.eclipse.viatra2.core.IRelation; |
| import org.eclipse.viatra2.gtasm.interpreter.exception.ViatraTransformationException; |
| import org.eclipse.viatra2.gtasm.interpreter.executionEnvironment.IExecutionEnvironment; |
| import org.eclipse.viatra2.gtasm.interpreter.term.internal.TermInterpreterErrorString; |
| import org.eclipse.viatra2.gtasm.interpreter.term.internal.TermInterpreterException; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.enums.ValueKind; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.terms.ModelElementQuery; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.terms.Term; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Aggregate; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.ElementReference; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.FullyQualifiedName; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Inverse; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Multiplicity; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Name; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Source; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Target; |
| import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.modelmanagement.queryFunctions.Value; |
| |
| /**All model query operations evaluation are handled by the class |
| * @author Peter Pasztor, Akos Horvath |
| * |
| */ |
| public class ModelElementQueryEvaluator extends TermEvaluator { |
| private static ModelElementQueryEvaluator _instance = new ModelElementQueryEvaluator(); |
| |
| private ModelElementQueryEvaluator() { |
| ; |
| } |
| |
| public static ModelElementQueryEvaluator getInstance() { |
| return _instance; |
| } |
| |
| @Override |
| public Object evaluate(IExecutionEnvironment executionEnvironment, |
| Term termToBeEvaluated) throws ViatraTransformationException { |
| ModelElementQuery modelElementQuery = (ModelElementQuery) termToBeEvaluated; |
| //evaluate the argument of the operation |
| Object result = TermEvaluator.getInstance().evaluate( |
| executionEnvironment, (modelElementQuery).getArgument()); |
| |
| if (modelElementQuery instanceof Aggregate) { |
| |
| if (!(result instanceof IRelation)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_RELATION_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| return ((IRelation) result).getIsAggregation(); |
| } else if (modelElementQuery instanceof FullyQualifiedName) { |
| // result is a model element right now - if it's correct... |
| if (!(result instanceof IModelElement)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_MODELELEMENT_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| return ((IModelElement) result).getFullyQualifiedName(); |
| } else if (modelElementQuery instanceof Name) { |
| if (!(result instanceof IModelElement)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_MODELELEMENT_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| return ((IModelElement) result).getName(); |
| } |
| else if (modelElementQuery instanceof ElementReference) { |
| // result is definitely not null |
| if (!(result instanceof String)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_STRING_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| result = executionEnvironment.getFramework().getTopmodel() |
| .getModelManager().getElementByName((String) result); |
| |
| return result != null ? result : ValueKind.UNDEF_LITERAL; |
| } else if (modelElementQuery instanceof Value) { |
| if (!(result instanceof IEntity)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_ENTITY_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| |
| return ((IEntity) result).getValue(); |
| |
| } else if (modelElementQuery instanceof Multiplicity) { |
| if (!(result instanceof IRelation)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_RELATION_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| return ((IRelation) result).getMultiplicity(); |
| } else if (modelElementQuery instanceof Inverse) { |
| if (!(result instanceof IRelation)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_RELATION_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| |
| return ((IRelation) result).getInverse(); |
| |
| } else if (modelElementQuery instanceof Target) { |
| if (!(result instanceof IRelation)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_RELATION_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| |
| result = ((IRelation) result).getTo(); |
| return result != null ? result : ValueKind.UNDEF_LITERAL; |
| |
| } else if (modelElementQuery instanceof Source) { |
| if (!(result instanceof IRelation)) { |
| if (ValueKind.UNDEF_LITERAL.equals(result)) |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_EXIST_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName(), convertToJavaType(result)}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.REF_NOT_RELATION_MODELELEMENTQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| |
| result = ((IRelation) result).getFrom(); |
| return result != null ? result : ValueKind.UNDEF_LITERAL; |
| } |
| else |
| { |
| String[] context = {modelElementQuery.getName()}; |
| throw new TermInterpreterException( |
| TermInterpreterErrorString.UNIMP_MODELQUERY |
| ,context |
| ,termToBeEvaluated); |
| } |
| } |
| |
| } |