MAVEN-123 add dependent artifacts source classpath elements to classpath

plugins/liferay-maven-plugin/src/main/java/com/liferay/maven/plugins/AbstractLiferayMojo.java

@@ -256,19 +256,41 @@ protected ClassLoader getProjectClassLoader() throws Exception {
 
 protected List<String> getProjectClassPath() throws Exception {
 List<String> projectClassPath = new ArrayList<String>();
+List<MavenProject> cpProjects = new ArrayList<MavenProject>();
 
 projectClassPath.addAll(getToolsClassPath());
 
-for (Object object : project.getCompileClasspathElements()) {
-String path = (String)object;
+cpProjects.add(project);
 
-File file = new File(path);
+for (Object object : project.getDependencyArtifacts()) {
+Artifact artifact = (Artifact) object;
 
-URI uri = file.toURI();
+if (artifact.getArtifactHandler().isAddedToClasspath() &&
+(Artifact.SCOPE_COMPILE.equals( artifact.getScope() ) ||
+Artifact.SCOPE_PROVIDED.equals( artifact.getScope() ) ||
+Artifact.SCOPE_SYSTEM.equals( artifact.getScope() ) ) ) {
+MavenProject depProject = this.resolveProject( artifact );
 
-URL url = uri.toURL();
+if (depProject != null && depProject.getCompileSourceRoots().size() >= 1 ) {
+getLog().debug( "adding project to classpath " + depProject );
+cpProjects.add( depProject );
+}
+}
+}
+
+for (MavenProject cpProject : cpProjects) {
+for (Object object : cpProject.getCompileClasspathElements()) {
+String path = (String)object;
+getLog().debug("classpath element " + path);
 
-projectClassPath.add(url.toString());
+File file = new File(path);
+
+URI uri = file.toURI();
+
+URL url = uri.toURL();
+
+projectClassPath.add(url.toString());
+}
 }
 
 getLog().debug("Project class path:");