improve SearchUtil

scm-core/src/main/java/sonia/scm/Filter.java

@@ -0,0 +1,54 @@
+/**
+ * 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;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ *
+ * @param <T>
+ */
+public interface Filter<T>
+{
+
+  /**
+   * Method description
+   *
+   *
+   * @param item
+   *
+   * @return
+   */
+  public boolean accept(T item);
+}

scm-core/src/main/java/sonia/scm/TransformFilter.java

@@ -0,0 +1,54 @@
+/**
+ * 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;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ *
+ * @param <T>
+ */
+public interface TransformFilter<T>
+{
+
+  /**
+   * Method description
+   *
+   *
+   * @param item
+   *
+   * @return
+   */
+  public T accept(T item);
+}

scm-core/src/main/java/sonia/scm/search/SearchUtil.java

@@ -35,8 +35,17 @@ package sonia.scm.search;
 
 //~--- non-JDK imports --------------------------------------------------------
 
+import sonia.scm.Filter;
+import sonia.scm.TransformFilter;
 import sonia.scm.util.Util;
 
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
 /**
  *
  * @author Sebastian Sdorra
@@ -120,6 +129,49 @@ public class SearchUtil
     return result;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param searchRequest
+   * @param collection
+   * @param filter
+   * @param <T>
+   *
+   * @return
+   */
+  public static <T> Collection<T> search(SearchRequest searchRequest,
+          Collection<T> collection, TransformFilter<T> filter)
+  {
+    List<T> items = new ArrayList<T>();
+    int index = 0;
+    int counter = 0;
+    Iterator<T> it = collection.iterator();
+
+    while (it.hasNext())
+    {
+      T item = filter.accept(it.next());
+
+      if (item != null)
+      {
+        index++;
+
+        if (searchRequest.getStartWith() <= index)
+        {
+          items.add(item);
+          counter++;
+
+          if (searchRequest.getMaxResults() <= counter)
+          {
+            break;
+          }
+        }
+      }
+    }
+
+    return items;
+  }
+
   /**
    * Method description
    *

scm-webapp/src/main/java/sonia/scm/user/xml/XmlUserManager.java

@@ -44,6 +44,7 @@ import org.slf4j.LoggerFactory;
 
 import sonia.scm.HandlerEvent;
 import sonia.scm.SCMContextProvider;
+import sonia.scm.TransformFilter;
 import sonia.scm.search.SearchRequest;
 import sonia.scm.search.SearchUtil;
 import sonia.scm.security.ScmSecurityException;
@@ -64,11 +65,8 @@ import sonia.scm.web.security.WebSecurityContext;
 import java.io.IOException;
 import java.io.InputStream;
 
-import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Iterator;
 import java.util.LinkedList;
-import java.util.List;
 
 import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
@@ -340,34 +338,23 @@ public class XmlUserManager extends AbstractUserManager
       logger.debug("search user with query {}", searchRequest.getQuery());
     }
 
-    List<User> users = new ArrayList<User>();
-    int index = 0;
-    int counter = 0;
-    Iterator<User> it = userDB.values().iterator();
-
-    while (it.hasNext())
+    return SearchUtil.search(searchRequest, userDB.values(),
+                             new TransformFilter<User>()
     {
-      User user = it.next();
-
-      if (SearchUtil.matchesOne(searchRequest, user.getName(),
-                                user.getDisplayName(), user.getMail()))
+      @Override
+      public User accept(User user)
       {
-        index++;
+        User result = null;
 
-        if (searchRequest.getStartWith() <= index)
+        if (SearchUtil.matchesOne(searchRequest, user.getName(),
+                                  user.getDisplayName(), user.getMail()))
         {
-          users.add(user.clone());
-          counter++;
-
-          if (searchRequest.getMaxResults() <= counter)
-          {
-            break;
-          }
+          result = user.clone();
         }
-      }
-    }
 
-    return users;
+        return result;
+      }
+    });
   }
 
   //~--- get methods ----------------------------------------------------------