1 files changed, 52 insertions, 0 deletions
diff --git a/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/DelegatingValueWriter.java b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/DelegatingValueWriter.java
new file mode 100644
index 0000000000..b11530d94f
--- /dev/null
+++ b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/DelegatingValueWriter.java
@@ -0,0 +1,52 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.qpid.amqp_1_0.codec;
+
+import java.nio.ByteBuffer;
+
+public abstract class DelegatingValueWriter<V> implements ValueWriter<V>
+{
+    private ValueWriter _delegate;
+    private Registry _registry;
+
+
+    protected DelegatingValueWriter(final Registry registry)
+    {
+        _registry = registry;
+    }
+
+    public int writeToBuffer(final ByteBuffer buffer)
+    {
+        return _delegate.writeToBuffer(buffer);
+    }
+
+    public void setValue(final V frameBody)
+    {
+        _delegate = _registry.getValueWriter(getUnderlyingValue(frameBody));
+    }
+
+    protected abstract Object getUnderlyingValue(final V frameBody);
+
+    public boolean isComplete()
+    {
+        return _delegate.isComplete();
+    }
+}