001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020package org.sonar.api.batch; 021 022import com.google.common.collect.Lists; 023import org.apache.maven.artifact.DependencyResolutionRequiredException; 024import org.apache.maven.project.MavenProject; 025import org.sonar.api.BatchComponent; 026import org.sonar.api.utils.SonarException; 027 028import java.io.File; 029import java.net.MalformedURLException; 030import java.net.URL; 031import java.net.URLClassLoader; 032import java.util.List; 033 034/** 035 * @since 2.2 036 */ 037public class ProjectClasspath implements BatchComponent { 038 039 protected MavenProject pom; 040 private List<File> elements; 041 private URLClassLoader classloader; 042 043 public ProjectClasspath(MavenProject pom) { 044 this.pom = pom; 045 } 046 047 public URLClassLoader getClassloader() { 048 if (classloader == null) { 049 classloader = createClassLoader(); 050 } 051 return classloader; 052 } 053 054 /** 055 * bytecode directory + JARs (dependencies) 056 */ 057 public List<File> getElements() { 058 if (elements == null) { 059 elements = createElements(); 060 } 061 return elements; 062 } 063 064 protected URLClassLoader createClassLoader() { 065 try { 066 List<URL> urls = Lists.newArrayList(); 067 for (File file : getElements()) { 068 urls.add(file.toURI().toURL()); 069 } 070 return new URLClassLoader(urls.toArray(new URL[urls.size()]), null); 071 072 } catch (MalformedURLException e) { 073 throw new SonarException("Fail to create the project classloader. Classpath element is unvalid.", e); 074 } 075 } 076 077 protected List<File> createElements() { 078 try { 079 List<File> files = Lists.newArrayList(); 080 if (pom.getCompileClasspathElements() != null) { 081 for (String classPathString : (List<String>) pom.getCompileClasspathElements()) { 082 files.add(new File(classPathString)); 083 } 084 } 085 086 if (pom.getBuild().getOutputDirectory() != null) { 087 File outputDirectoryFile = new File(pom.getBuild().getOutputDirectory()); 088 if (outputDirectoryFile.exists()) { 089 files.add(outputDirectoryFile); 090 } 091 } 092 return files; 093 } catch (DependencyResolutionRequiredException e) { 094 throw new SonarException("Fail to create the project classloader", e); 095 } 096 } 097}