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Groovy example source code file (MyIntegerAnnoTraceASTTransformation.java)

This example Groovy source code file (MyIntegerAnnoTraceASTTransformation.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

annotatednode, annotatednode, annotationnode, annotationnode, arraylist, file, file, groovyasttransformation, groovyasttransformation, internal, io, list, myintegerannotraceasttransformation, runtimeexception, sourceunit, util

The Groovy MyIntegerAnnoTraceASTTransformation.java source code

 * Copyright 2008-2009 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package groovy.annotations;

import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.AnnotatedNode;
import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.control.CompilePhase;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.transform.ASTTransformation;
import org.codehaus.groovy.transform.GroovyASTTransformation;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.io.File;
import java.io.IOException;

 * Traces @MyIntegerAnno annotation
 * @author Paul King
@GroovyASTTransformation(phase = CompilePhase.CANONICALIZATION)
public class MyIntegerAnnoTraceASTTransformation implements ASTTransformation {
    public static List<String> trace = new ArrayList();
    public void visit(ASTNode[] nodes, final SourceUnit source) {
        if (nodes.length != 2 || !(nodes[0] instanceof AnnotationNode) || !(nodes[1] instanceof AnnotatedNode)) {
            throw new RuntimeException("Internal error: expecting [AnnotationNode, AnnotatedNode] but got: " + Arrays.asList(nodes));
        AnnotatedNode parent = (AnnotatedNode) nodes[1];
        File f = new File("temp/log.txt");
        try {
            DefaultGroovyMethods.append(f, parent.getClass().getSimpleName() + " " +
                    parent.getAnnotations().get(0).getMember("value").getText() + " ");
        } catch (IOException e) {

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