1 files changed, 87 insertions, 0 deletions
diff --git a/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/WorkspaceStateWriter.java b/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/WorkspaceStateWriter.java
new file mode 100644
index 00000000..a2f84921
--- /dev/null
+++ b/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/WorkspaceStateWriter.java
@@ -0,0 +1,87 @@
+/*******************************************************************************
+ * Copyright (c) 2008-2010 Sonatype, Inc.
+ * 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:
+ *      Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.m2e.core.internal.project;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Properties;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IWorkspaceRoot;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.IProgressMonitor;
+
+import org.apache.maven.artifact.Artifact;
+
+import org.eclipse.m2e.core.core.MavenLogger;
+import org.eclipse.m2e.core.project.IMavenProjectChangedListener;
+import org.eclipse.m2e.core.project.IMavenProjectFacade;
+import org.eclipse.m2e.core.project.MavenProjectChangedEvent;
+import org.eclipse.m2e.core.project.MavenProjectManager;
+
+/**
+ * Maintains map file of maven artifacts present in workspace.   
+ */
+public class WorkspaceStateWriter implements IMavenProjectChangedListener {
+
+  private MavenProjectManager projectManager;
+
+  public WorkspaceStateWriter(MavenProjectManager projectManager) {
+    this.projectManager = projectManager;
+  }
+  
+  public void mavenProjectChanged(MavenProjectChangedEvent[] events, IProgressMonitor monitor) {
+    try {
+      Properties state = new Properties();
+
+      IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
+      for(IMavenProjectFacade projectFacade : projectManager.getProjects()) {
+        try {
+          Artifact artifact = projectFacade.getMavenProject(monitor).getArtifact();
+          IFile pomFile = projectFacade.getPom();
+          IPath location = pomFile.getLocation();
+          if(location != null) {
+            File pom = location.toFile();
+            if(pom.canRead()) {
+              String key = artifact.getGroupId() + ":" + artifact.getArtifactId() + ":pom:" + artifact.getBaseVersion(); //$NON-NLS-1$ //$NON-NLS-2$
+              state.put(key, pom.getCanonicalPath());
+            }
+          }
+          IResource outputLocation = root.findMember(projectFacade.getOutputLocation());
+          if (!"pom".equals(artifact.getType()) && outputLocation != null && outputLocation.exists()) { //$NON-NLS-1$
+            String key = artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getType() + ":" + artifact.getBaseVersion(); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+            state.put(key, outputLocation.getLocation().toFile().getCanonicalPath());
+          }
+        } catch (CoreException ex) {
+          MavenLogger.log("Error writing workspace state file", ex);
+        }
+      }
+
+      OutputStream buf = new BufferedOutputStream(new FileOutputStream(projectManager.getWorkspaceStateFile()));
+      try {
+        state.store(buf, null);
+      } finally {
+        buf.close();
+      }
+      
+    } catch(IOException ex) {
+      MavenLogger.log("Error writing workspace state file", ex);
+    }
+  }
+
+}