show plugin updates only once

scm-core/src/main/java/sonia/scm/plugin/PluginInformationComparator.java

@@ -0,0 +1,88 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.plugin;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.util.Util;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.Comparator;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ * @since 1.6
+ */
+public class PluginInformationComparator
+        implements Comparator<PluginInformation>
+{
+
+  /** Field description */
+  public static final PluginInformationComparator INSTANCE =
+    new PluginInformationComparator();
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param plugin
+   * @param other
+   *
+   * @return
+   */
+  @Override
+  public int compare(PluginInformation plugin, PluginInformation other)
+  {
+    int result = 0;
+
+    result = Util.compare(plugin.getGroupId(), other.getGroupId());
+
+    if (result == 0)
+    {
+      result = Util.compare(plugin.getArtifactId(), other.getArtifactId());
+
+      if (result == 0)
+      {
+        result = plugin.getState().getCompareValue()
+                 - other.getState().getCompareValue();
+      }
+    }
+
+    return result;
+  }
+}

scm-core/src/main/java/sonia/scm/plugin/PluginState.java

@@ -39,5 +39,36 @@ package sonia.scm.plugin;
  */
 public enum PluginState
 {
-  CORE, AVAILABLE, INSTALLED, NEWER_VERSION_INSTALLED, UPDATE_AVAILABLE;
+  CORE(100), AVAILABLE(60), INSTALLED(80), NEWER_VERSION_INSTALLED(20),
+  UPDATE_AVAILABLE(40);
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param compareValue
+   */
+  private PluginState(int compareValue)
+  {
+    this.compareValue = compareValue;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @since 1.6
+   * @return
+   */
+  public int getCompareValue()
+  {
+    return compareValue;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  int compareValue;
 }

scm-webapp/src/main/java/sonia/scm/api/rest/resources/PluginResource.java

@@ -41,10 +41,18 @@ import com.google.inject.Singleton;
 import sonia.scm.plugin.DefaultPluginManager;
 import sonia.scm.plugin.OverviewPluginFilter;
 import sonia.scm.plugin.PluginInformation;
+import sonia.scm.plugin.PluginInformationComparator;
+import sonia.scm.util.Util;
 
 //~--- JDK imports ------------------------------------------------------------
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
 
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
@@ -196,7 +204,29 @@ public class PluginResource
   @Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
   public Collection<PluginInformation> getOverview()
   {
-    return pluginManager.get(OverviewPluginFilter.INSTANCE);
+    List<PluginInformation> plugins = new ArrayList<PluginInformation>(
+                                        pluginManager.get(
+                                          OverviewPluginFilter.INSTANCE));
+
+    Collections.sort(plugins, PluginInformationComparator.INSTANCE);
+
+    Iterator<PluginInformation> it = plugins.iterator();
+    String last = null;
+
+    while (it.hasNext())
+    {
+      PluginInformation pi = it.next();
+      String id = pi.getGroupId().concat(":").concat(pi.getArtifactId());
+
+      if ((last != null) && id.equals(last))
+      {
+        it.remove();
+      }
+
+      last = id;
+    }
+
+    return plugins;
   }
 
   //~--- fields ---------------------------------------------------------------

scm-webapp/src/main/java/sonia/scm/plugin/DefaultPluginManager.java

@@ -309,8 +309,8 @@ public class DefaultPluginManager implements PluginManager
 
     for ( PluginInformation pi : getPluginCenter().getPlugins() )
     {
-      System.out.println(pi.getArtifactId() + ": " + pi.getVersion() + ":"
-                         + pi.getState());
+      System.out.println( pi.getArtifactId() + ": " + pi.getVersion()  + ":" + pi.getState() );
+      
     }
     
     filter(infoSet, getInstalled(), filter);