/*
* Copyright 2012 PRODYNA AG
*
* Licensed under the Eclipse Public License (EPL), Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php or
* http://www.nabucco.org/License.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.nabucco.framework.generator.compiler.transformation.java.adapter;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.Argument;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldReference;
import org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ReturnStatement;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.nabucco.framework.generator.compiler.constants.NabuccoJavaTemplateConstants;
import org.nabucco.framework.generator.compiler.transformation.java.common.ast.JavaAstSupport;
import org.nabucco.framework.generator.compiler.transformation.java.common.ast.container.JavaAstContainter;
import org.nabucco.framework.generator.compiler.transformation.java.common.ast.container.JavaAstType;
import org.nabucco.framework.generator.compiler.transformation.java.constants.ServerConstants;
import org.nabucco.framework.generator.compiler.transformation.java.visitor.NabuccoToJavaVisitorContext;
import org.nabucco.framework.generator.compiler.transformation.java.visitor.NabuccoToJavaVisitorSupport;
import org.nabucco.framework.generator.compiler.transformation.util.NabuccoTransformationUtility;
import org.nabucco.framework.generator.compiler.transformation.util.mapper.NabuccoModifierComponentMapper;
import org.nabucco.framework.generator.compiler.visitor.NabuccoVisitorException;
import org.nabucco.framework.generator.parser.model.NabuccoModelType;
import org.nabucco.framework.generator.parser.syntaxtree.AdapterStatement;
import org.nabucco.framework.generator.parser.syntaxtree.ServiceDeclaration;
import org.nabucco.framework.mda.model.MdaModel;
import org.nabucco.framework.mda.model.java.JavaCompilationUnit;
import org.nabucco.framework.mda.model.java.JavaModel;
import org.nabucco.framework.mda.model.java.JavaModelException;
import org.nabucco.framework.mda.model.java.ast.JavaAstMethod;
import org.nabucco.framework.mda.model.java.ast.element.JavaAstElementFactory;
import org.nabucco.framework.mda.model.java.ast.produce.JavaAstModelProducer;
import org.nabucco.framework.mda.template.java.JavaTemplateException;
/**
* NabuccoToJavaAdapterLocalProxyVisitor
*
* @author Nicolas Moser, PRODYNA AG
*/
public class NabuccoToJavaAdapterLocalProxyVisitor extends NabuccoToJavaVisitorSupport {
private static final String ANNOTATION_OVERRIDE = "Override";
private static final String DELEGATE_FIELD = "delegate";
/**
* Creates a new {@link NabuccoToJavaAdapterLocalProxyVisitor} instance.
*
* @param visitorContext
* the visitor context
*/
public NabuccoToJavaAdapterLocalProxyVisitor(NabuccoToJavaVisitorContext visitorContext) {
super(visitorContext);
}
@Override
public void visit(AdapterStatement nabuccoAdapter, MdaModel<JavaModel> target) {
// Visit sub-nodes first!
super.visit(nabuccoAdapter, target);
JavaAstElementFactory javaFactory = JavaAstElementFactory.getInstance();
String interfaceName = nabuccoAdapter.nodeToken2.tokenImage;
String localInterface = interfaceName + ServerConstants.LOCAL;
String pkg = this.getVisitorContext().getPackage();
String name = localInterface + ServerConstants.PROXY;
String projectName = super.getProjectName(NabuccoModelType.ADAPTER,
NabuccoModifierComponentMapper.getModifierType(nabuccoAdapter.nodeToken.tokenImage));
try {
// Load Template
JavaCompilationUnit unit = super.extractAst(NabuccoJavaTemplateConstants.ADAPTER_LOCAL_PROXY_TEMPLATE);
TypeDeclaration type = unit.getType(NabuccoJavaTemplateConstants.ADAPTER_LOCAL_PROXY_TEMPLATE);
// Name and Package
javaFactory.getJavaAstType().setTypeName(type, name);
javaFactory.getJavaAstUnit().setPackage(unit.getUnitDeclaration(), pkg);
// Super-classes
super.createInterface(interfaceName);
this.prepareDelegate(localInterface, type);
// Javadoc
JavaAstSupport.convertJavadocAnnotations(nabuccoAdapter.annotationDeclaration, type);
JavaAstSupport.convertAstNodes(unit, this.getVisitorContext().getContainerList(), this.getVisitorContext()
.getImportList());
// File creation
unit.setProjectName(projectName);
unit.setSourceFolder(super.getSourceFolder());
target.getModel().getUnitList().add(unit);
} catch (JavaModelException jme) {
throw new NabuccoVisitorException("Error during Java AST adapter modification.", jme);
} catch (JavaTemplateException te) {
throw new NabuccoVisitorException("Error during Java template adapter processing.", te);
}
}
/**
* Modify the delegate type.
*
* @param interfaceName
* name of the local interface
* @param type
* the type declaration
*
* @throws JavaModelException
*/
private void prepareDelegate(String interfaceName, TypeDeclaration type) throws JavaModelException {
JavaAstModelProducer producer = JavaAstModelProducer.getInstance();
JavaAstElementFactory javaFactory = JavaAstElementFactory.getInstance();
FieldDeclaration delegate = javaFactory.getJavaAstType().getField(type, DELEGATE_FIELD);
delegate.type = producer.createTypeReference(interfaceName, false);
ConstructorDeclaration constructor = javaFactory.getJavaAstType().getConstructors(type).get(0);
Argument argument = constructor.arguments[0];
javaFactory.getJavaAstArgument().setType(argument, producer.createTypeReference(interfaceName, false));
}
@Override
public void visit(ServiceDeclaration nabuccoService, MdaModel<JavaModel> target) {
String type = nabuccoService.nodeToken1.tokenImage;
String name = NabuccoTransformationUtility.firstToLower(type);
JavaAstContainter<MethodDeclaration> getter = this.createGetter(name, type);
super.getVisitorContext().getContainerList().add(getter);
}
/**
* Create the delegating getter.
*
* @param serviceName
* name of the service
* @param serviceType
* type of the service
*
* @return the getter method
*/
private JavaAstContainter<MethodDeclaration> createGetter(String serviceName, String serviceType) {
try {
JavaAstModelProducer producer = JavaAstModelProducer.getInstance();
JavaAstMethod methodFactory = JavaAstElementFactory.getInstance().getJavaAstMethod();
String getterName = NabuccoTransformationUtility.toGetter(serviceName);
MethodDeclaration getter = producer.createMethodDeclaration(getterName, null, false);
methodFactory.setReturnType(getter, producer.createTypeReference(serviceType, false));
methodFactory.addException(getter, producer.createTypeReference(SERVICE + EXCEPTION, false));
FieldReference fieldReference = producer.createFieldThisReference(DELEGATE_FIELD);
MessageSend delegate = producer.createMessageSend(getterName + ServerConstants.LOCAL, fieldReference, null);
ReturnStatement returnStatement = producer.createReturnStatement(delegate);
getter.statements = new Statement[] { returnStatement };
Annotation override = producer.createAnnotation(ANNOTATION_OVERRIDE, null);
methodFactory.addAnnotation(getter, override);
JavaAstContainter<MethodDeclaration> container = new JavaAstContainter<MethodDeclaration>(getter,
JavaAstType.METHOD);
container.getImports().add(super.resolveImport(serviceType));
return container;
} catch (JavaModelException jme) {
throw new NabuccoVisitorException("Error creating local proxy getter.", jme);
}
}
}