package org.apache.maven.plugin;

 /*

  * 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.artifact.Artifact;

 import org.codehaus.plexus.compiler.util.scan.SimpleSourceInclusionScanner;

 import org.codehaus.plexus.compiler.util.scan.SourceInclusionScanner;

 import org.codehaus.plexus.compiler.util.scan.StaleSourceScanner;

 import java.io.File;

 import java.util.Collections;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 /**

  * Compiles application sources

  *

  * @author <a href="mailto:jason@maven.org">Jason van Zyl </a>

  * @version $Id$

  * @since 2.0

  * @goal compile

  * @phase compile

  * @requiresDependencyResolution compile

  */

 public class CompilerMojo

     extends AbstractCompilerMojo

 {

     /**

      * The source directories containing the sources to be compiled.

      *

      * @parameter default-value="${project.compileSourceRoots}"

      * @required

      * @readonly

      */

     private List compileSourceRoots;

     /**

      * Project classpath.

      *

      * @parameter default-value="${project.compileClasspathElements}"

      * @required

      * @readonly

      */

     private List classpathElements;

     /**

      * The directory for compiled classes.

      *

      * @parameter default-value="${project.build.outputDirectory}"

      * @required

      * @readonly

      */

     private File outputDirectory;

     /**

      * Project artifacts.

      *

      * @parameter default-value="${project.artifact}"

      * @required

      * @readonly

      * @todo this is an export variable, really

      */

     private Artifact projectArtifact;

     /**

      * A list of inclusion filters for the compiler.

      *

      * @parameter

      */

     private Set includes = new HashSet();

     /**

      * A list of exclusion filters for the compiler.

      *

      * @parameter

      */

     private Set excludes = new HashSet();

     protected List getCompileSourceRoots()

     {

         return compileSourceRoots;

     }

     protected List getClasspathElements()

     {

         return classpathElements;

     }

     protected File getOutputDirectory()

     {

         return outputDirectory;

     }

     public void execute()

         throws MojoExecutionException, CompilationFailureException

     {

         super.execute();

         projectArtifact.setFile( outputDirectory );

     }

     protected SourceInclusionScanner getSourceInclusionScanner( int staleMillis )

     {

         SourceInclusionScanner scanner = null;

         if ( includes.isEmpty() && excludes.isEmpty() )

         {

             scanner = new StaleSourceScanner( staleMillis );

         }

         else

         {

             if ( includes.isEmpty() )

             {

                 includes.add( "**/*.java" );

             }

             scanner = new StaleSourceScanner( staleMillis, includes, excludes );

         }

         return scanner;

     }

     protected SourceInclusionScanner getSourceInclusionScanner( String inputFileEnding )

     {

         SourceInclusionScanner scanner = null;

         if ( includes.isEmpty() && excludes.isEmpty() )

         {

             includes = Collections.singleton( "**/*." + inputFileEnding );

             scanner = new SimpleSourceInclusionScanner( includes, Collections.EMPTY_SET );

         }

         else

         {

             if ( includes.isEmpty() )

             {

                 includes.add( "**/*." + inputFileEnding );

             }

             scanner = new SimpleSourceInclusionScanner( includes, excludes );

         }

         return scanner;

     }

     protected String getSource()

     {

       return source;

     }

     protected String getTarget()

     {

       return target;

     }

     protected String getCompilerArgument()

     {

       return compilerArgument;

     }

     protected Map getCompilerArguments()

     {

       return compilerArguments;

     }

 }