XjcMojo.java

package org.codehaus.mojo.xjc;

/*
 * Copyright 2005 Ashley Williams.
 *
 * 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.
 */

import java.io.File;

import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Copy;
import org.apache.tools.ant.taskdefs.Mkdir;
import org.apache.tools.ant.types.FileSet;
import org.codehaus.mojo.mant.MantGoal;

/**
 * xjc compiler plugin.
 * This plugin generates JAXB source files from an XML schema.
 * The source files are generated in a directory under the project build
 * directory derived from the configured properties.
 *
 * <p>
 * A word of caution:
 * Your schema may be rejected if your text editor places spurious whitespace
 * characters at the start of the file - if you think your schema is otherwise well
 * formed then open it up in a hex editor and correct as necessary.
 * </p>
 *
 * @goal xjc
 * @phase generate-sources
 * @requiresDependencyResolution test
 */
public class XjcMojo
    extends AbstractMojo
{
    /**
     * The Maven project.
     *
     * @parameter expression="${project}"
     * @required
     * @readonly
     */
    private MavenProject project;

    /**
     * The xjc ant task, for example:
     * <xjc schema="src/main/resources/com/acme/services.xsd" package="com.acme"/>
     * Place inside a CDATA section - see README.txt for more information.
     * @parameter
     * @required
     */
    private String task;

    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        String[] mappings = new String[] { "@target", MantGoal.JAVA_GEN };
        MantGoal goal = new MantGoal( this, project, "com.sun.tools.xjc.XJCTask", task, mappings );
        createJavaGenDir(goal);
        goal.execute();
        copyResources( goal );
    }

    /**
     * The xjc task won't create the target directory so we create it here.
     * @param goal
     */
    private void createJavaGenDir(MantGoal goal)
    {
        Mkdir mkdir = new Mkdir();
        Project project = new Project();
        project.init();
        mkdir.setProject(project);
        mkdir.setTaskName("mkdir");
        mkdir.setDir( new File( goal.getJavaGen() ) );
        mkdir.execute();
    }

    /**
     * Copies the generated java to the generated resources.
     * Easiest way to get the Configuration.xml and jaxb.properties files in the right
     * place, although unfortunately all the java files are copied too.
     * @param goal
     */
    private void copyResources( MantGoal goal )
    {
        Copy copy = new Copy();
        Project project = new Project();
        project.init();
        copy.setProject(project);
        copy.setTaskName("copy");
        copy.setTodir( new File( goal.getResGen() ) );
        FileSet fileSet = new FileSet();
        fileSet.setDir( new File( goal.getJavaGen() ) );
        copy.addFileset( fileSet );
        copy.execute();
    }
}