1 files changed, 83 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/transport/Field.java b/qpid/java/common/src/main/java/org/apache/qpid/transport/Field.java
new file mode 100644
index 0000000000..bc6bf10041
--- /dev/null
+++ b/qpid/java/common/src/main/java/org/apache/qpid/transport/Field.java
@@ -0,0 +1,83 @@
+/*
+ *
+ * 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.transport;
+
+import org.apache.qpid.transport.codec.Decoder;
+import org.apache.qpid.transport.codec.Encoder;
+
+
+/**
+ * Field
+ *
+ */
+
+public abstract class Field<C,T>
+{
+
+    private final Class<C> container;
+    private final Class<T> type;
+    private final String name;
+    private final int index;
+
+    Field(Class<C> container, Class<T> type, String name, int index)
+    {
+        this.container = container;
+        this.type = type;
+        this.name = name;
+        this.index = index;
+    }
+
+    public final Class<C> getContainer()
+    {
+        return container;
+    }
+
+    public final Class<T> getType()
+    {
+        return type;
+    }
+
+    public final String getName()
+    {
+        return name;
+    }
+
+    public final int getIndex()
+    {
+        return index;
+    }
+
+    protected final C check(Object struct)
+    {
+        return container.cast(struct);
+    }
+
+    public abstract boolean has(Object struct);
+
+    public abstract void has(Object struct, boolean value);
+
+    public abstract T get(Object struct);
+
+    public abstract void read(Decoder dec, Object struct);
+
+    public abstract void write(Encoder enc, Object struct);
+
+}