1 files changed, 109 insertions, 0 deletions
diff --git a/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/SymbolTypeConstructor.java b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/SymbolTypeConstructor.java
new file mode 100644
index 0000000000..ce0f5cb26b
--- /dev/null
+++ b/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/SymbolTypeConstructor.java
@@ -0,0 +1,109 @@
+/*
+ *
+ * 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 org.apache.qpid.amqp_1_0.type.AmqpErrorException;
+import org.apache.qpid.amqp_1_0.type.Symbol;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class SymbolTypeConstructor extends VariableWidthTypeConstructor
+{
+    private static final Charset ASCII = Charset.forName("US-ASCII");
+
+    private BinaryString _defaultBinaryString = new BinaryString();
+
+    private static final ConcurrentHashMap<BinaryString, Symbol> SYMBOL_MAP =
+            new ConcurrentHashMap<BinaryString, Symbol>(2048);
+
+    public static SymbolTypeConstructor getInstance(int i)
+    {
+        return new SymbolTypeConstructor(i);
+    }
+
+
+    private SymbolTypeConstructor(int size)
+    {
+        super(size);
+    }
+
+    @Override
+    public Object construct(final ByteBuffer in, boolean isCopy, ValueHandler handler) throws AmqpErrorException
+    {
+        int size;
+
+        if(getSize() == 1)
+        {
+            size = in.get() & 0xFF;
+        }
+        else
+        {
+            size = in.getInt();
+        }
+
+        _defaultBinaryString.setData(in.array(), in.arrayOffset()+in.position(), size);
+
+        BinaryString binaryStr = _defaultBinaryString;
+
+        Symbol symbolVal = SYMBOL_MAP.get(binaryStr);
+        if(symbolVal == null)
+        {
+            ByteBuffer dup = in.duplicate();
+            try
+            {
+                dup.limit(in.position()+size);
+            }
+            catch (IllegalArgumentException e)
+            {
+                System.err.println("in.position(): " + in.position());
+                System.err.println("size: " + size);
+                System.err.println("dup.position(): " + dup.position());
+                System.err.println("dup.capacity(): " + dup.capacity());
+                System.err.println("dup.limit(): " + dup.limit());
+                throw e;
+
+            }
+            CharBuffer charBuf = ASCII.decode(dup);
+
+
+            symbolVal = Symbol.getSymbol(charBuf.toString());
+
+
+
+
+            byte[] data = new byte[size];
+            in.get(data);
+            binaryStr = new BinaryString(data, 0, size);
+            SYMBOL_MAP.putIfAbsent(binaryStr, symbolVal);
+        }
+        else
+        {
+            in.position(in.position()+size);
+        }
+
+        return symbolVal;
+
+    }
+
+}
+\ No newline at end of file