home | career | drupal | java | mac | mysql | perl | scala | uml | unix

Groovy example source code file (GenerateStubsTask.java)

This example Groovy source code file (GenerateStubsTask.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

buildexception, file, file, generated, generating, groovyclassloader, io, java, java, javastubcompilationunit, javastubcompilationunit, no, override, string, string

The Groovy GenerateStubsTask.java source code

/*
 * Copyright 2003-2007 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,
 * 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.codehaus.groovy.ant;

import groovy.lang.GroovyClassLoader;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;

import org.codehaus.groovy.tools.javac.JavaStubCompilationUnit;

import java.io.File;

/**
 * Generates Java stubs from Groovy sources.
 *
 * @version $Id: GenerateStubsTask.java 18226 2009-11-12 07:16:10Z paulk $
 * @author <a href="mailto:jason@planet57.com">Jason Dillon
 */
public class GenerateStubsTask
    extends CompileTaskSupport
{
    @Override
    protected void compile() {
        GroovyClassLoader gcl = createClassLoader();
        JavaStubCompilationUnit cu = new JavaStubCompilationUnit(config, gcl, destdir);

        int count = 0;

        String[] list = src.list();
        for (int i = 0; i < list.length; i++) {
            File basedir = getProject().resolveFile(list[i]);
            if (!basedir.exists()) {
                throw new BuildException("Source directory does not exist: " + basedir, getLocation());
            }

            DirectoryScanner scanner = getDirectoryScanner(basedir);
            String[] includes = scanner.getIncludedFiles();

            log.debug("Including files from: " + basedir);

            for (int j=0; j < includes.length; j++) {
                log.debug("    "  + includes[j]);
                
                File file = new File(basedir, includes[j]);
                cu.addSource(file);

                // Increment the count for each non/java src we found
                if (!includes[j].endsWith(".java")) {
                    count++;
                }
            }
        }

        if (count > 0) {
            log.info("Generating " + count + " Java stub" + (count > 1 ? "s" : "") + " to " + destdir);

            cu.compile();

            log.info("Generated " + cu.getStubCount() + " Java stub(s)");
        }
        else {
            log.info("No sources found for stub generation");
        }
    }
}

Other Groovy examples (source code examples)

Here is a short list of links related to this Groovy GenerateStubsTask.java source code file:

new blog posts

 

Copyright 1998-2014 Alvin Alexander, alvinalexander.com
All Rights Reserved.