better support for binary projects for shaded libraries like wagon-ht…

…tp-2.10-shaded.jar

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>

com.ifedorenko.m2e.binaryproject/src/com/ifedorenko/m2e/binaryproject/sourcelookup/BinaryProjectContainerResolver.java

@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2011-2016 Igor Fedorenko
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *      Igor Fedorenko - initial API and implementation
+ *******************************************************************************/
+package com.ifedorenko.m2e.binaryproject.sourcelookup;
+
+import static com.ifedorenko.m2e.binaryproject.sourcelookup.BinaryProjectDescriber.getBinaryLocation;
+import static com.ifedorenko.m2e.sourcelookup.internal.jdt.AbstractProjectSourceDescriber.getClasspath;
+
+import java.io.File;
+import java.util.Map;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.debug.core.sourcelookup.ISourceContainer;
+import org.eclipse.jdt.core.IJavaProject;
+import org.eclipse.jdt.core.IPackageFragmentRoot;
+import org.eclipse.jdt.core.JavaCore;
+import org.eclipse.jdt.launching.sourcelookup.containers.PackageFragmentRootSourceContainer;
+import org.eclipse.m2e.core.MavenPlugin;
+import org.eclipse.m2e.core.embedder.ArtifactKey;
+import org.eclipse.m2e.core.project.IMavenProjectFacade;
+import org.eclipse.m2e.core.project.IMavenProjectRegistry;
+
+import com.ifedorenko.m2e.sourcelookup.internal.jdt.ISourceContainerResolver;
+import com.ifedorenko.m2e.sourcelookup.internal.launch.MavenSourceContainerResolver;
+
+// useful to lookup shaded binary projects like wagon-http-2.10-shaded.jar
+public class BinaryProjectContainerResolver extends MavenSourceContainerResolver implements ISourceContainerResolver {
+
+  @Override
+  protected ISourceContainer resovleSourceContainer(ArtifactKey artifact, IProgressMonitor monitor) {
+    String groupId = artifact.getGroupId();
+    String artifactId = artifact.getArtifactId();
+    String version = artifact.getVersion();
+
+    IMavenProjectRegistry projectRegistry = MavenPlugin.getMavenProjectRegistry();
+
+    IMavenProjectFacade mavenProject = projectRegistry.getMavenProject(groupId, artifactId, version);
+    if (mavenProject == null) {
+      return null;
+    }
+
+    IProject project = mavenProject.getProject();
+
+    try {
+      final File binaryLocation = getBinaryLocation(project);
+      if (binaryLocation == null) {
+        return null;
+      }
+
+      IJavaProject javaProject = JavaCore.create(project);
+
+      Map<File, IPackageFragmentRoot> classpath = getClasspath(javaProject);
+      IPackageFragmentRoot binary = classpath.remove(binaryLocation);
+
+      if (binary == null) {
+        return null; // this is a bug somewhere in my code
+      }
+
+      return new PackageFragmentRootSourceContainer(binary);
+    } catch (CoreException e) {
+      // ignore, maybe log
+    }
+
+    return null;
+  }
+}

com.ifedorenko.m2e.binaryproject/src/com/ifedorenko/m2e/binaryproject/sourcelookup/BinaryProjectDescriber.java

@@ -13,6 +13,7 @@
 import java.io.File;
 import java.util.Map;
 
+import org.eclipse.core.resources.IProject;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IPackageFragmentRoot;
@@ -23,8 +24,8 @@
 
 public class BinaryProjectDescriber extends AbstractProjectSourceDescriber {
 
-  private static File getBinaryLocation(IJavaProject project) throws CoreException {
-    final String binaryLocation = project.getProject().getPersistentProperty(BinaryProjectPlugin.QNAME_JAR);
+  static File getBinaryLocation(IProject project) throws CoreException {
+    final String binaryLocation = project.getPersistentProperty(BinaryProjectPlugin.QNAME_JAR);
     if (binaryLocation == null) {
       return null;
     }
@@ -33,7 +34,7 @@ private static File getBinaryLocation(IJavaProject project) throws CoreException
 
   @Override
   public void describeProject(IJavaProject project, IJavaProjectSourceDescription description) throws CoreException {
-    final File binaryLocation = getBinaryLocation(project);
+    final File binaryLocation = getBinaryLocation(project.getProject());
     if (binaryLocation == null) {
       return;
     }

com.ifedorenko.m2e.sourcelookup/src/com/ifedorenko/m2e/sourcelookup/internal/jdt/AbstractProjectSourceDescriber.java

@@ -73,7 +73,7 @@ protected static boolean isSourceProject(IJavaProject project) throws JavaModelE
     return false;
   }
 
-  protected static Map<File, IPackageFragmentRoot> getClasspath(IJavaProject project) throws JavaModelException {
+  public static Map<File, IPackageFragmentRoot> getClasspath(IJavaProject project) throws JavaModelException {
     final Map<File, IPackageFragmentRoot> classpath = new LinkedHashMap<>();
     for (IPackageFragmentRoot fragment : project.getPackageFragmentRoots()) {
       if (fragment.getKind() == IPackageFragmentRoot.K_BINARY) {

com.ifedorenko.m2e.sourcelookup/src/com/ifedorenko/m2e/sourcelookup/internal/launch/MavenArtifactIdentifierer.java

@@ -146,7 +146,7 @@ protected Collection<ArtifactKey> identifyCentralSearch(File file) {
     return null;
   }
 
-  protected Collection<ArtifactKey> scanPomProperties(File classesLocation) {
+  public Collection<ArtifactKey> scanPomProperties(File classesLocation) {
     Set<ArtifactKey> artifacts = new LinkedHashSet<>();
     for (Properties pomProperties : scanner.scan(classesLocation, "pom.properties")) {
       String groupId = pomProperties.getProperty("groupId");

com.ifedorenko.m2e.sourcelookup/src/com/ifedorenko/m2e/sourcelookup/internal/launch/MavenSourceContainerResolver.java

@@ -53,7 +53,7 @@ public Collection<ISourceContainer> resolveSourceContainers(File classesLocation
     return result;
   }
 
-  private ISourceContainer resovleSourceContainer(ArtifactKey artifact, IProgressMonitor monitor) {
+  protected ISourceContainer resovleSourceContainer(ArtifactKey artifact, IProgressMonitor monitor) {
     String groupId = artifact.getGroupId();
     String artifactId = artifact.getArtifactId();
     String version = artifact.getVersion();