bind decorator factories

scm-webapp/src/main/java/sonia/scm/util/Decorators.java

@@ -0,0 +1,89 @@
+/**
+ * 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.util;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.DecoratorFactory;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class Decorators
+{
+
+  /**
+   * the logger for Decorators
+   */
+  private static final Logger logger =
+    LoggerFactory.getLogger(Decorators.class);
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param object
+   * @param decoratorFactories
+   * @param <T>
+   *
+   * @return
+   */
+  public static <T> T decorate(T object,
+    Iterable<? extends DecoratorFactory<T>> decoratorFactories)
+  {
+    if (decoratorFactories != null)
+    {
+      for (DecoratorFactory<T> decoratorFactory : decoratorFactories)
+      {
+        if (logger.isDebugEnabled())
+        {
+          logger.debug("decorate {} with {}", object.getClass(),
+            decoratorFactory.getClass());
+        }
+
+        object = decoratorFactory.createDecorator(object);
+      }
+    }
+    else if (logger.isDebugEnabled())
+    {
+      logger.debug("no decorators found for {}", object.getClass());
+    }
+
+    return object;
+  }
+}