=== added file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/AccessHelper.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/AccessHelper.java	1970-01-01 00:00:00 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/AccessHelper.java	2012-12-27 19:01:44 +0000
@@ -0,0 +1,92 @@
+package org.hisp.dhis.common;
+
+/*
+ * Copyright (c) 2004-2012, University of Oslo
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of the HISP project 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 COPYRIGHT OWNER 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.
+ */
+
+/**
+ * @author Morten Olav Hansen <mortenoh@gmail.com>
+ */
+public class AccessHelper
+{
+    public final String DEFAULT_ACCESS = "--------";
+
+    public enum Permission
+    {
+        READ( 'r', 0 ), WRITE( 'w', 1 );
+
+        private char value;
+
+        private int position;
+
+        private Permission( char value, int position )
+        {
+            this.value = value;
+            this.position = position;
+        }
+
+        public char getValue()
+        {
+            return value;
+        }
+
+        public int getPosition()
+        {
+            return position;
+        }
+    }
+
+    private char[] access = DEFAULT_ACCESS.toCharArray();
+
+    public AccessHelper()
+    {
+    }
+
+    public AccessHelper( char[] access )
+    {
+        this.access = access;
+    }
+
+    public AccessHelper( String access )
+    {
+        this.access = access.toCharArray();
+    }
+
+    public void enable( Permission permission )
+    {
+        access[permission.getPosition()] = permission.getValue();
+    }
+
+    public void disable( Permission permission )
+    {
+        access[permission.getPosition()] = '-';
+    }
+
+    public String toString()
+    {
+        return access.toString();
+    }
+}

=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/UserGroupService.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/UserGroupService.java	2011-12-21 11:37:17 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/UserGroupService.java	2012-12-27 19:01:44 +0000
@@ -1,5 +1,32 @@
 package org.hisp.dhis.user;
 
+/*
+ * Copyright (c) 2004-2012, University of Oslo
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of the HISP project 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 COPYRIGHT OWNER 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.
+ */
+
 import java.util.Collection;
 
 public interface UserGroupService