SetMojo.java

package org.codehaus.mojo.versions;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.codehaus.plexus.components.interactivity.Prompter;
import org.codehaus.plexus.components.interactivity.PrompterException;
import org.codehaus.plexus.util.StringUtils;

/**
 * Sets the current projects version, updating the details of any child modules as necessary.
 *
 * @author Stephen Connolly
 * @goal set
 * @aggregator
 * @requiresProject true
 * @requiresDirectInvocation true
 * @since 1.0-beta-1
 */
public class SetMojo
        extends AbstractSetMojo
{

    /**
     * The new version number to set.
     *
     * @parameter expression="${newVersion}"
     * @since 1.0-beta-1
     */
    private String newVersion;

    /**
     * The version of the dependency/module to update.
     *
     * @parameter expression="${oldVersion}" default-value="${project.version}"
     * @since 1.2
     */
    private String oldVersion;

    /**
     * Component used to prompt for input
     *
     * @component
     */
    private Prompter prompter;

    /**
     * Called when this mojo is executed.
     *
     * @throws org.apache.maven.plugin.MojoExecutionException
     *          when things go wrong.
     * @throws org.apache.maven.plugin.MojoFailureException
     *          when things go wrong.
     */
    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        if ( updateMatchingVersions == null )
        {
            updateMatchingVersions = Boolean.TRUE;
        }

        if ( getProject().getOriginalModel().getVersion() == null )
        {
            throw new MojoExecutionException( "Project version is inherited from parent." );
        }

        if ( StringUtils.isEmpty( newVersion ) )
        {
            if ( settings.isInteractiveMode() )
            {
                try
                {
                    newVersion =
                        prompter.prompt( "Enter the new version to set", getProject().getOriginalModel().getVersion() );
                }
                catch ( PrompterException e )
                {
                    throw new MojoExecutionException( e.getMessage(), e );
                }
            }
            else
            {
                throw new MojoExecutionException( "You must specify the new version, either by using the newVersion "
                    + "property (that is -DnewVersion=... on the command line) or run in interactive mode" );
            }
        }
        setVersion(newVersion, oldVersion);
    }

}