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authorAnton Tananaev <anton.tananaev@gmail.com>2015-06-24 10:56:45 +1200
committerAnton Tananaev <anton.tananaev@gmail.com>2015-06-24 10:56:45 +1200
commit65a234c9b64461f9b946cdb256d46c53bd92b2d7 (patch)
tree9a92071cb7d8b9fe6d90b9bdd3e03297c55e327d /src/org/traccar/ExtendedObjectDecoder.java
parent55744465b536fec0595ff2489d8e0fdf3008c0ff (diff)
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Diffstat (limited to 'src/org/traccar/ExtendedObjectDecoder.java')
-rw-r--r--src/org/traccar/ExtendedObjectDecoder.java61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/org/traccar/ExtendedObjectDecoder.java b/src/org/traccar/ExtendedObjectDecoder.java
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+/*
+ * 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.ChannelEvent;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.channel.MessageEvent;
+import org.jboss.netty.handler.codec.oneone.OneToOneDecoder;
+
+import java.net.SocketAddress;
+
+import static org.jboss.netty.channel.Channels.fireMessageReceived;
+
+public abstract class ExtendedObjectDecoder extends OneToOneDecoder {
+
+ @Override
+ public void handleUpstream(
+ ChannelHandlerContext ctx, ChannelEvent evt) throws Exception {
+ if (!(evt instanceof MessageEvent)) {
+ ctx.sendUpstream(evt);
+ return;
+ }
+
+ MessageEvent e = (MessageEvent) evt;
+ Object originalMessage = e.getMessage();
+ Object decodedMessage = decode(ctx, e.getChannel(), e.getRemoteAddress(), originalMessage);
+ if (originalMessage == decodedMessage) {
+ ctx.sendUpstream(evt);
+ } else if (decodedMessage != null) {
+ fireMessageReceived(ctx, decodedMessage, e.getRemoteAddress());
+ }
+ }
+
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ return decode(ctx, channel, msg);
+ }
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
+
+ return null; // default implementation
+ }
+
+}