1 files changed, 37 insertions, 0 deletions
diff --git a/src/org/traccar/BaseDataHandler.java b/src/org/traccar/BaseDataHandler.java
new file mode 100644
index 000000000..5a7e2a455
--- /dev/null
+++ b/src/org/traccar/BaseDataHandler.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar;
+
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.oneone.OneToOneDecoder;
+import org.traccar.model.Position;
+
+public abstract class BaseDataHandler extends OneToOneDecoder {
+
+    @Override
+    protected final Object decode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
+
+        if (msg instanceof Position) {
+            return handlePosition((Position) msg);
+        }
+        
+        return msg;
+    }
+    
+    protected abstract Position handlePosition(Position position);
+
+}