added a few convenience classes around Queue.Task

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@31416 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/Queue.java

@@ -34,6 +34,7 @@ import static hudson.util.Iterators.reverse;
 
 import hudson.cli.declarative.CLIMethod;
 import hudson.cli.declarative.CLIResolver;
+import hudson.model.queue.AbstractQueueTask;
 import hudson.model.queue.QueueSorter;
 import hudson.model.queue.QueueTaskDispatcher;
 import hudson.remoting.AsyncFutureImpl;
@@ -1020,6 +1021,11 @@ public class Queue extends ResourceController implements Saveable {
      * Pending {@link Task}s are persisted when Hudson shuts down, so
      * it needs to be persistable via XStream. To create a non-persisted
      * transient Task, extend {@link TransientTask} marker interface.
+     *
+     * <p>
+     * Plugins are encouraged to extend from {@link AbstractQueueTask}
+     * instead of implementing this interface directly, to maintain
+     * compatibility with future changes to this interface.
      */
     public interface Task extends ModelObject, ResourceActivity {
         /**

core/src/main/java/hudson/model/queue/AbstractQueueTask.java

+/*
+ * The MIT License
+ *
+ * Copyright (c) 2010, InfraDNA, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package hudson.model.queue;
+
+import hudson.model.Queue;
+
+/**
+ * Abstract base class for {@link Queue.Task} to protect plugins
+ * from new additions to the interface.
+ *
+ * @author Kohsuke Kawaguchi
+ * @since 1.360
+ */
+public abstract class AbstractQueueTask implements Queue.Task {
+}

core/src/main/java/hudson/model/queue/QueueTaskFilter.java

+/*
+ * The MIT License
+ *
+ * Copyright (c) 2010, InfraDNA, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package hudson.model.queue;
+
+import hudson.model.Label;
+import hudson.model.Node;
+import hudson.model.Queue;
+import hudson.model.Queue.Executable;
+import hudson.model.Queue.Task;
+import hudson.model.ResourceList;
+
+import java.io.IOException;
+
+/**
+ * Base class for defining filter {@link Queue.Task}.
+ *
+ * @author Kohsuke Kawaguchi
+ * @since 1.360
+ */
+public abstract class QueueTaskFilter implements Queue.Task {
+    private final Queue.Task base;
+
+    protected QueueTaskFilter(Task base) {
+        this.base = base;
+    }
+
+    public Label getAssignedLabel() {
+        return base.getAssignedLabel();
+    }
+
+    public Node getLastBuiltOn() {
+        return base.getLastBuiltOn();
+    }
+
+    public boolean isBuildBlocked() {
+        return base.isBuildBlocked();
+    }
+
+    public String getWhyBlocked() {
+        return base.getWhyBlocked();
+    }
+
+    public CauseOfBlockage getCauseOfBlockage() {
+        return base.getCauseOfBlockage();
+    }
+
+    public String getName() {
+        return base.getName();
+    }
+
+    public String getFullDisplayName() {
+        return base.getFullDisplayName();
+    }
+
+    public long getEstimatedDuration() {
+        return base.getEstimatedDuration();
+    }
+
+    public Executable createExecutable() throws IOException {
+        return base.createExecutable();
+    }
+
+    public void checkAbortPermission() {
+        base.checkAbortPermission();
+    }
+
+    public boolean hasAbortPermission() {
+        return base.hasAbortPermission();
+    }
+
+    public String getUrl() {
+        return base.getUrl();
+    }
+
+    public boolean isConcurrentBuild() {
+        return base.isConcurrentBuild();
+    }
+
+    public String getDisplayName() {
+        return base.getDisplayName();
+    }
+
+    public ResourceList getResourceList() {
+        return base.getResourceList();
+    }
+}