From 6de86c82c5b075faccbb8ad5c73517d5fb57048d Mon Sep 17 00:00:00 2001
From: Sebastian Sdorra <sebastian.sdorra@cloudogu.com>
Date: Wed, 13 Jun 2012 16:23:43 +0200
Subject: [PATCH] added helper class for pre processor handling

---
 .../scm/repository/PreProcessorUtil.java      | 241 ++++++++++++++++++
 1 file changed, 241 insertions(+)
 create mode 100644 scm-core/src/main/java/sonia/scm/repository/PreProcessorUtil.java

diff --git a/scm-core/src/main/java/sonia/scm/repository/PreProcessorUtil.java b/scm-core/src/main/java/sonia/scm/repository/PreProcessorUtil.java
new file mode 100644
index 0000000000..d697cd5b82
--- /dev/null
+++ b/scm-core/src/main/java/sonia/scm/repository/PreProcessorUtil.java
@@ -0,0 +1,241 @@
+/**
+ * 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.repository;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.inject.Inject;
+
+import sonia.scm.util.Util;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.Set;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ * @since 1.17
+ */
+public class PreProcessorUtil
+{
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param changesetPreProcessorSet
+   * @param changesetPreProcessorFactorySet
+   * @param fileObjectPreProcessorSet
+   * @param fileObjectPreProcessorFactorySet
+   */
+  @Inject
+  public PreProcessorUtil(
+          Set<ChangesetPreProcessor> changesetPreProcessorSet,
+          Set<ChangesetPreProcessorFactory> changesetPreProcessorFactorySet,
+          Set<FileObjectPreProcessor> fileObjectPreProcessorSet,
+          Set<FileObjectPreProcessorFactory> fileObjectPreProcessorFactorySet)
+  {
+    this.changesetPreProcessorSet = changesetPreProcessorSet;
+    this.changesetPreProcessorFactorySet = changesetPreProcessorFactorySet;
+    this.fileObjectPreProcessorSet = fileObjectPreProcessorSet;
+    this.fileObjectPreProcessorFactorySet = fileObjectPreProcessorFactorySet;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   * @param changeset
+   */
+  public void prepareForReturn(Repository repository, Changeset changeset)
+  {
+    EscapeUtil.escape(changeset);
+    callPreProcessors(changesetPreProcessorSet, changeset);
+    callPreProcessorFactories(changesetPreProcessorFactorySet, repository,
+                              changeset);
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   * @param changeset
+   * @param result
+   */
+  public void prepareForReturn(Repository repository, BrowserResult result)
+  {
+    EscapeUtil.escape(result);
+    callPreProcessors(fileObjectPreProcessorSet, result);
+    callPreProcessorFactories(fileObjectPreProcessorFactorySet, repository,
+                              result);
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   * @param result
+   */
+  public void prepareForReturn(Repository repository,
+                               ChangesetPagingResult result)
+  {
+    EscapeUtil.escape(result);
+    callPreProcessors(changesetPreProcessorSet, result);
+    callPreProcessorFactories(changesetPreProcessorFactorySet, repository,
+                              result);
+  }
+
+  /**
+   * Method description
+   *
+   *
+   *
+   *
+   * @param preProcessorFactorySet
+   * @param repository
+   * @param changesets
+   * @param items
+   * @param <T>
+   */
+  private <T> void callPreProcessorFactories(
+          Set<? extends PreProcessorFactory<T>> preProcessorFactorySet,
+          Repository repository, Iterable<T> items)
+  {
+    if (Util.isNotEmpty(preProcessorFactorySet))
+    {
+      for (PreProcessorFactory<T> factory : preProcessorFactorySet)
+      {
+        PreProcessor<T> preProcessor = factory.createPreProcessor(repository);
+
+        if (preProcessor != null)
+        {
+          for (T item : items)
+          {
+            preProcessor.process(item);
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * Method description
+   *
+   *
+   *
+   * @param preProcessorFactorySet
+   * @param repository
+   * @param item
+   * @param <T>
+   */
+  private <T> void callPreProcessorFactories(
+          Set<? extends PreProcessorFactory<T>> preProcessorFactorySet,
+          Repository repository, T item)
+  {
+    if (Util.isNotEmpty(preProcessorFactorySet))
+    {
+      for (PreProcessorFactory<T> factory : preProcessorFactorySet)
+      {
+        PreProcessor<T> cpp = factory.createPreProcessor(repository);
+
+        if (cpp != null)
+        {
+          cpp.process(item);
+        }
+      }
+    }
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param changesets
+   *
+   * @param preProcessorSet
+   * @param items
+   * @param <T>
+   */
+  private <T> void callPreProcessors(
+          Set<? extends PreProcessor<T>> preProcessorSet, Iterable<T> items)
+  {
+    if (Util.isNotEmpty(preProcessorSet))
+    {
+      for (T item : items)
+      {
+        callPreProcessors(preProcessorSet, item);
+      }
+    }
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param c
+   *
+   * @param preProcessorSet
+   * @param item
+   * @param <T>
+   */
+  private <T> void callPreProcessors(
+          Set<? extends PreProcessor<T>> preProcessorSet, T item)
+  {
+    if (Util.isNotEmpty(preProcessorSet))
+    {
+      for (PreProcessor<T> preProcessor : preProcessorSet)
+      {
+        preProcessor.process(item);
+      }
+    }
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private Set<ChangesetPreProcessorFactory> changesetPreProcessorFactorySet;
+
+  /** Field description */
+  private Set<ChangesetPreProcessor> changesetPreProcessorSet;
+
+  /** Field description */
+  private Set<FileObjectPreProcessorFactory> fileObjectPreProcessorFactorySet;
+
+  /** Field description */
+  private Set<FileObjectPreProcessor> fileObjectPreProcessorSet;
+}