Refactoring and multi-version support

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@526446 13f79535-47bb-0310-9956-ffa450edef68

6 files changed, 364 insertions, 349 deletions

diff --git a/gentools/templ.java/MethodBodyClass.tmpl b/gentools/templ.java/MethodBodyClass.tmpl
deleted file mode 100644
index eb730fd891..0000000000
--- a/gentools/templ.java/MethodBodyClass.tmpl
+++ /dev/null
@@ -1,183 +0,0 @@
-&{${CLASS}${METHOD}Body.java}
-/*
- *
- * 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.
- *
- */
-
-/*
- * This file is auto-generated by ${GENERATOR} - do not modify.
- * Supported AMQP versions:
-%{VLIST} *   ${major}-${minor}
- */
- 
-package org.apache.qpid.framing;
-
-import java.util.HashMap;
-
-import org.apache.mina.common.ByteBuffer;
-
-public class ${CLASS}${METHOD}Body extends AMQMethodBody implements EncodableAMQDataBlock
-{
-    private static final AMQMethodBodyInstanceFactory factory = new AMQMethodBodyInstanceFactory()
-    {
-        public AMQMethodBody newInstance(byte major, byte minor, ByteBuffer in, long size) throws AMQFrameDecodingException
-        {
-            return new ${CLASS}${METHOD}Body(major, minor, in);
-        }
-		
-	    public AMQMethodBody newInstance(byte major, byte minor, int clazzID, int methodID, ByteBuffer in, long size) throws AMQFrameDecodingException
-        {
-            return new ${CLASS}${METHOD}Body(major, minor, clazzID, methodID, in);
-        }
- 
-    };
-    
-    public static AMQMethodBodyInstanceFactory getFactory()
-    {
-        return factory;
-    }
-
-    public static HashMap<Integer, Integer> classIdMap = new HashMap<Integer, Integer>();
-    public static HashMap<Integer, Integer> methodIdMap = new HashMap<Integer, Integer>();
-    
-    private static void registerMethodId(byte major, byte minor, int methodId)
-    {
-        methodIdMap.put((0xff & (int) major) | ((0xff & (int) minor)<<8), methodId); 
-    }
-    
-    private static void registerClassId(byte major, byte minor, int classId)
-    {
-        classIdMap.put((0xff & (int) major) | ((0xff & (int) minor)<<8), classId); 
-    }
-    
-    
-    static
-    {
-
-        ${CLASS_ID_INIT}
-        ${METHOD_ID_INIT}
-
-    }
-    
-    // Fields declared in specification
-%{FLIST}    ${field_declaration}
-
-    private final int _clazz;
-    private final int _method;
-
-    
-    // Constructor
-
-    public ${CLASS}${METHOD}Body(byte major, byte minor, ByteBuffer buffer) throws AMQFrameDecodingException
-    {
-		this(major, minor, getClazz(major,minor), getMethod(major,minor), buffer);
-	}
-	
-    public ${CLASS}${METHOD}Body(byte major, byte minor, int clazzID, int methodID, ByteBuffer buffer) throws AMQFrameDecodingException
-    {
-
-        super(major, minor);
-        _clazz = clazzID; 
-        _method = methodID; 
-        %{FLIST}    ${mb_field_decode}
-    }
-    public ${CLASS}${METHOD}Body(byte major, byte minor, int clazzID, int methodID
-    %{FLIST}    ${mb_field_parameter_list}
-                                         )
-    {
-        super(major, minor);
-        _clazz = getClazz(major,minor); 
-        _method = getMethod(major,minor); 
-        %{FLIST}    ${mb_field_body_initialize}
-    }
-    
-    public int getClazz() 
-    { 
-        return _clazz; 
-    }
-    
-    public int getMethod() 
-    { 
-        return _method; 
-    }
-
-    public static int getClazz(byte major, byte minor) 
-    { 
-        return classIdMap.get((0xff & (int) major) | ((0xff & (int) minor)<<8)); 
-    }
-    
-    public static int getMethod(byte major, byte minor) 
-    { 
-        return methodIdMap.get((0xff & (int) major) | ((0xff & (int) minor)<<8)); 
-    }
-    
-    
-    // Field methods        
-%{FLIST}    ${mb_field_get_method}
-
-    protected int getBodySize()
-    {      
-        int size = 0;
-%{FLIST}    ${mb_field_size}
-        return size;        
-    }
-
-    protected void writeMethodPayload(ByteBuffer buffer)
-    {
-%{FLIST}    ${mb_field_encode}
-    }
-
-    public void populateMethodBodyFromBuffer(ByteBuffer buffer) throws AMQFrameDecodingException
-    {
-%{FLIST}    ${mb_field_decode}
-    }
-
-    public String toString()
-    {
-        StringBuffer buf = new StringBuffer(super.toString());
-%{FLIST}    ${mb_field_to_string}
-        return buf.toString();
-    }
-
-    public static AMQFrame createAMQFrame(int channelId, byte major, byte minor
-%{FLIST}    ${mb_field_parameter_list}
-                                         )
-    {
-        return createAMQFrame(channelId, major, minor, getClazz(major,minor), getMethod(major,minor)
-%{FLIST}    ${mb_field_passed_parameter_list}
-        );
-
-                 
-        
-    }
-	
-	public static AMQFrame createAMQFrame(int channelId, byte major, byte minor, int clazzID, int methodID
-%{FLIST}    ${mb_field_parameter_list}
-                                         )
-    {
-        ${CLASS}${METHOD}Body body = new ${CLASS}${METHOD}Body(major, minor, clazzID, methodID
-%{FLIST}    ${mb_field_passed_parameter_list}
-        );
-
-                 
-        AMQFrame frame = new AMQFrame(channelId, body);
-        return frame;
-    }
-
-}
diff --git a/gentools/templ.java/MethodRegistryClass.tmpl b/gentools/templ.java/MethodRegistryClass.tmpl
deleted file mode 100644
index 99e142aa0d..0000000000
--- a/gentools/templ.java/MethodRegistryClass.tmpl
+++ /dev/null
@@ -1,158 +0,0 @@
-&{MainRegistry.java}
-/*
- *
- * 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.
- *
- */
-
-/*
- * This file is auto-generated by ${GENERATOR} - do not modify.
- * Supported AMQP versions:
-%{VLIST} *   ${major}-${minor}
- */
- 
-package org.apache.qpid.framing;
-
-import java.util.HashMap;
-import org.apache.log4j.Logger;
-import org.apache.mina.common.ByteBuffer;
-
-public class MainRegistry
-{
-	private static final HashMap<Long, AMQMethodBodyInstanceFactory> classIDMethodIDVersionBodyMap = new HashMap<Long, AMQMethodBodyInstanceFactory>();
-
-	
-    private static final Logger _log = Logger.getLogger(MainRegistry.class);
-	
-
-    private static final int DEFAULT_MINOR_VERSION_COUNT = 10;
-    private static final int DEFAULT_MAJOR_VERSION_COUNT = 10;
-    
-    private static VersionSpecificRegistry[][] _specificRegistries = new VersionSpecificRegistry[DEFAULT_MAJOR_VERSION_COUNT][];
-    	
-    static
-    {
-%{CLIST}	${reg_map_put_method}
-
-        configure();
-    }
-    
-    public static AMQMethodBody get(short classID, short methodID, byte major, byte minor, ByteBuffer in, long size)
-        throws AMQFrameDecodingException
-    {
-		VersionSpecificRegistry registry = getVersionSpecificRegistry(major, minor);
-        AMQMethodBodyInstanceFactory bodyFactory = registry.getMethodBody(classID,methodID);
-		
-        if (bodyFactory == null)
-        {
-            throw new AMQFrameDecodingException(_log,
-                "Unable to find a suitable decoder for class " + classID + " and method " +
-                methodID + " in AMQP version " + major + "-" + minor + ".");
-        }
-        return bodyFactory.newInstance(major, minor, in, size);
-
-	    
-    }
-	
-    
-	public static VersionSpecificRegistry getVersionSpecificRegistry(ProtocolVersion pv)
-	{
-        return getVersionSpecificRegistry(pv.getMajorVersion(), pv.getMinorVersion());
-    }
-	public static VersionSpecificRegistry getVersionSpecificRegistry(byte major, byte minor)
-	{
-		try
-		{
-			return _specificRegistries[(int)major][(int)minor];
-		}
-		catch (IndexOutOfBoundsException e)
-		{
-			return null;
-		}
-		catch (NullPointerException e)
-		{
-			return null;
-		}
-		
-		
-	}
-    
-	private static VersionSpecificRegistry addVersionSpecificRegistry(byte major, byte minor)
-	{
-		VersionSpecificRegistry[][] registries = _specificRegistries;
-		if(major >= registries.length)
-		{
-			_specificRegistries = new VersionSpecificRegistry[(int)major + 1][];
-			System.arraycopy(registries, 0, _specificRegistries, 0, registries.length);
-			registries = _specificRegistries;
-		}
-		if(registries[major] == null)
-		{
-			registries[major] = new VersionSpecificRegistry[ minor >= DEFAULT_MINOR_VERSION_COUNT ? minor + 1 : DEFAULT_MINOR_VERSION_COUNT ];
-		}
-		else if(registries[major].length <= minor)
-		{
-			VersionSpecificRegistry[] minorArray = registries[major];
-			registries[major] = new VersionSpecificRegistry[ minor + 1 ];
-			System.arraycopy(minorArray, 0, registries[major], 0, minorArray.length);
-			
-		}
-		
-		VersionSpecificRegistry newRegistry = new VersionSpecificRegistry(major,minor);
-		
-		registries[major][minor] = newRegistry;
-		
-		return newRegistry;
-	}
-		
-	private static void registerMethod(short classID, short methodID, byte major, byte minor, AMQMethodBodyInstanceFactory instanceFactory )
-	{
-		VersionSpecificRegistry registry = getVersionSpecificRegistry(major,minor);
-		if(registry == null)
-		{
-			registry = addVersionSpecificRegistry(major,minor);
-			
-		}
-		
-		registry.registerMethod(classID, methodID, instanceFactory);
-        
-    }
-
-	
-    private static void configure()
-    {
-        for(int i = 0 ; i < _specificRegistries.length; i++)
-        {
-            VersionSpecificRegistry[] registries = _specificRegistries[i];
-            if(registries != null)
-            {
-                for(int j = 0 ; j < registries.length; j++)
-                {
-                    VersionSpecificRegistry registry = registries[j];
-                    
-                    if(registry != null)
-                    {
-                        registry.configure();
-                    }
-                }
-            }
-        }
-        
-    }
-    
-}
diff --git a/gentools/templ.java/method/version/MethodBodyClass.vm b/gentools/templ.java/method/version/MethodBodyClass.vm
new file mode 100644
index 0000000000..bb62438a65
--- /dev/null
+++ b/gentools/templ.java/method/version/MethodBodyClass.vm
@@ -0,0 +1,190 @@
+#macro( UpperCamel $name )
+#set( $name = "${name.substring(0,1).toUpperCase()}${name.substring(1)}" )
+#end
+#macro( toUpperCamel $name )${name.substring(0,1).toUpperCase()}${name.substring(1)}#end
+
+
+
+#set( $amqp_ClassName = $amqpClass.Name) 
+#UpperCamel( $amqp_ClassName )
+#set( $amqp_MethodName = $amqpMethod.Name ) 
+#UpperCamel( $amqp_MethodName )
+#set( $javaClassName = "${amqp_ClassName}${amqp_MethodName}BodyImpl" )
+#set( $interfaceName = "${amqp_ClassName}${amqp_MethodName}Body" )
+#set( $amqpPackageName = "amqp_$version.getMajor()_$version.getMinor()" )
+
+#set( $filename = "${amqpPackageName}/${javaClassName}.java")
+/*
+ *
+ * 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.
+ *
+ */
+
+/*
+ * This file is auto-generated by ${generator} - do not modify.
+ * Supported AMQP version:
+ *   $version.getMajor()-$version.getMinor()
+ */
+ 
+#set( $clazz = $amqpClass.asSingleVersionClass( $version ) ) 
+#set( $method = $amqpMethod.asSingleVersionMethod( $version ) )
+ 
+package org.apache.qpid.framing.amqp_$version.getMajor()_$version.getMinor();
+
+import java.util.HashMap;
+
+import org.apache.mina.common.ByteBuffer;
+import org.apache.qpid.framing.*;
+
+public class ${javaClassName} extends AMQMethodBody_$version.getMajor()_$version.getMinor() implements $interfaceName
+{
+    private static final AMQMethodBodyInstanceFactory FACTORY_INSTANCE = new AMQMethodBodyInstanceFactory()
+    {
+        public AMQMethodBody newInstance(ByteBuffer in, long size) throws AMQFrameDecodingException
+        {
+            return new ${javaClassName}(in);
+        }
+		
+ 
+    };
+    
+	
+    public static AMQMethodBodyInstanceFactory getFactory()
+    {
+        return FACTORY_INSTANCE;
+    }
+
+	public static int CLASS_ID =  $clazz.ClassId; 
+    
+    public static int METHOD_ID = $method.MethodId; 
+    
+
+	
+    // Fields declared in specification
+#foreach( $field in $method.ConsolidatedFields )
+    private final $field.NativeType _$field.getName(); // $field.UnderlyingFields
+#end
+
+    
+    // Constructor
+
+    public ${javaClassName}(ByteBuffer buffer) throws AMQFrameDecodingException
+    {
+#foreach( $field in $method.ConsolidatedFields )
+        _$field.Name = read$field.getEncodingType()( buffer );
+#end
+	}
+	
+    public ${javaClassName}(
+#foreach( $field in $method.FieldList )
+#if( $velocityCount == $method.getFieldList().size() )
+                                $field.NativeType $field.Name
+#else
+                                $field.NativeType $field.Name,
+#end
+#end)
+    {
+#set( $consolidatedFieldName = "" )
+#foreach( $field in $method.FieldList )
+#if( $method.isConsolidated( $field.Name ) )
+#if( !$method.getConsolidatedFieldName( $field.Name ).equals( $consolidatedFieldName ) )
+#if( !$consolidatedFieldName.equals("") )
+        _$consolidatedFieldName = $consolidatedFieldName; // 1
+#end
+#set( $consolidatedFieldName = $method.getConsolidatedFieldName( $field.Name ) )
+        byte $consolidatedFieldName = (byte)0;
+#end
+        if( $field.Name )
+		{		    
+            $consolidatedFieldName = (byte) (((int) $consolidatedFieldName) | (1 << $method.getPositionInBitField( $field.Name )));
+		}
+#if( $velocityCount == $method.getFieldList().size())
+        _$consolidatedFieldName = $consolidatedFieldName; 
+#else  
+ 
+#end 
+#else
+#if( !$consolidatedFieldName.equals("") )
+        _$consolidatedFieldName = $consolidatedFieldName; 
+#end
+#set( $consolidatedFieldName = "" )
+        _$field.Name = $field.Name;
+#end
+#end
+    }
+    
+    public int getClazz() 
+    { 
+        return CLASS_ID; 
+    }
+    
+    public int getMethod() 
+    { 
+        return METHOD_ID; 
+    }
+
+    
+#foreach( $field in $method.FieldList )
+    public final $field.NativeType get#toUpperCamel( ${field.Name} )()
+    {
+#if( $method.isConsolidated( $field.Name ) )
+        return (((int)(_$method.getConsolidatedFieldName( $field.Name ))) & ( 1 << $method.getPositionInBitField( $field.Name ))) != 0;
+#else
+        return _$field.Name;
+#end
+    }
+#end
+
+    protected int getBodySize()
+    {      
+        int size = 0;
+#foreach( $field in $method.ConsolidatedFields )
+#if( $field.isFixedSize() )        
+        size += $field.Size;
+#else
+        size += getSizeOf( _$field.Name );
+#end
+#end
+        return size;        
+    }
+
+    public void writeMethodPayload(ByteBuffer buffer)
+    {
+#foreach( $field in $method.ConsolidatedFields )
+
+        write$field.getEncodingType()( buffer, _$field.Name );
+#end
+    }
+
+
+    public String toString()
+    {
+        StringBuffer buf = new StringBuffer("[$javaClassName: ");
+#foreach( $field in $method.FieldList )
+        buf.append( "$field.Name=" );
+		buf.append( get#toUpperCamel( $field.Name )() );
+#if( $velocityCount	!= $method.FieldList.size() )
+		buf.append( ", " );		
+#end		
+#end
+        buf.append("]");
+        return buf.toString();
+    }
+
+
+}
diff --git a/gentools/templ.java/ProtocolVersionListClass.tmpl b/gentools/templ.java/model/ProtocolVersionListClass.vm
index 4a2592d11b..18d90fab29 100644
--- a/gentools/templ.java/ProtocolVersionListClass.tmpl
+++ b/gentools/templ.java/model/ProtocolVersionListClass.vm
@@ -1,4 +1,4 @@
-&{ProtocolVersion.java}
+#set( $filename = "ProtocolVersion.java" )
 /*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
@@ -21,9 +21,11 @@
 */
 
 /*
-* This file is auto-generated by ${GENERATOR} - do not modify.
+* This file is auto-generated by $generator - do not modify.
 * Supported AMQP versions:
-%{VLIST} *   ${major}-${minor}
+#foreach( $version in $model.getVersionSet() )
+* $version.getMajor()-$version.getMinor()
+#end
 */
 
 package org.apache.qpid.framing;
@@ -59,15 +61,33 @@ public class ProtocolVersion  implements Comparable
     public int compareTo(Object o)
     {
         ProtocolVersion pv = (ProtocolVersion) o;
-        if(getMajorVersion() > pv.getMajorVersion())
+		
+		/* 
+		 * 0-8 has it's major and minor numbers the wrong way round (it's actually 8-0)...
+		 * so we need to deal with that case specially
+		 */
+		
+        if((_majorVersion == (byte) 8) && (_minorVersion == (byte) 0))
+		{
+		    ProtocolVersion fixedThis = new ProtocolVersion(_minorVersion, _majorVersion);
+			return fixedThis.compareTo(pv);
+		}
+		
+		if((pv.getMajorVersion() == (byte) 8) && (pv.getMinorVersion() == (byte) 0))
+		{
+			ProtocolVersion fixedOther = new ProtocolVersion(pv.getMinorVersion(), pv.getMajorVersion());
+		    return this.compareTo(fixedOther);    
+		}
+		
+        if(_majorVersion > pv.getMajorVersion())
         {
             return 1;
         }
-        else if(getMajorVersion() < pv.getMajorVersion())
+        else if(_majorVersion < pv.getMajorVersion())
         {
             return -1;
         }
-        else if(getMajorVersion() > pv.getMajorVersion())
+        else if(_minorVersion > pv.getMinorVersion())
         {
             return 1;
         }
@@ -109,8 +129,9 @@ public class ProtocolVersion  implements Comparable
     {
         SortedSet<ProtocolVersion> versions = new TreeSet<ProtocolVersion>();
 
-%{VLIST}        versions.add(new ProtocolVersion((byte)${major},(byte)${minor}));
-
+#foreach( $version in $model.getVersionSet() )
+        versions.add(new ProtocolVersion((byte)$version.getMajor(),(byte)$version.getMinor()));
+#end
         _supportedVersions = Collections.unmodifiableSortedSet(versions);
     }
 
diff --git a/gentools/templ.java/AmqpConstantsClass.tmpl b/gentools/templ.java/model/version/AmqpConstantsClass.vm
index 8d459f2977..8d459f2977 100644
--- a/gentools/templ.java/AmqpConstantsClass.tmpl
+++ b/gentools/templ.java/model/version/AmqpConstantsClass.vm
diff --git a/gentools/templ.java/model/version/MethodRegistryClass.vm b/gentools/templ.java/model/version/MethodRegistryClass.vm
new file mode 100644
index 0000000000..82287e7f8f
--- /dev/null
+++ b/gentools/templ.java/model/version/MethodRegistryClass.vm
@@ -0,0 +1,145 @@
+#set( $filename = "amqp_$version.getMajor()_$version.getMinor()/MethodRegistry_${version.getMajor()}_${version.getMinor()}.java")
+/*
+ *
+ * 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.
+ *
+ */
+
+/*
+ * This file is auto-generated by $generator - do not modify.
+ * Supported AMQP version:
+ *   $version.getMajor()-$version.getMinor()
+ */
+ 
+package org.apache.qpid.framing.amqp_${version.getMajor()}_${version.getMinor()};
+
+import org.apache.qpid.framing.AMQMethodBodyInstanceFactory;
+import org.apache.qpid.framing.AMQFrameDecodingException;
+import org.apache.qpid.framing.AMQMethodBody;
+import org.apache.qpid.framing.MethodRegistry;
+import org.apache.qpid.framing.ProtocolVersion;
+
+
+import org.apache.log4j.Logger;
+import org.apache.mina.common.ByteBuffer;
+
+public class MethodRegistry_$version.getMajor()_$version.getMinor() extends MethodRegistry
+{
+	
+    private static final Logger _log = Logger.getLogger(MethodRegistry.class);
+
+#set( $specificModel = $model.asSingleVersionModel() )	
+	
+	
+	
+	private final AMQMethodBodyInstanceFactory[][] _factories = new AMQMethodBodyInstanceFactory[$specificModel.getMaximumClassId()+1][];
+
+	public MethodRegistry_$version.getMajor()_$version.getMinor()()
+	{
+	    this(new ProtocolVersion((byte)$version.getMajor(),(byte)$version.getMinor()));
+    }
+	
+	public MethodRegistry_$version.getMajor()_$version.getMinor()(ProtocolVersion pv)
+	{
+        super(pv);	
+#foreach( $amqpClass in $specificModel.getClassList() )
+#set( $amqpClassNameFirstChar = $amqpClass.getName().substring(0,1) )
+#set( $amqpClassNameFirstCharU = $amqpClassNameFirstChar.toUpperCase() )
+#set( $amqpClassNameUpperCamel = "$amqpClassNameFirstCharU$amqpClass.getName().substring(1)" )
+
+
+
+		// Register method body instance factories for the $amqpClassNameUpperCamel class.
+
+        _factories[$amqpClass.getClassId()] = new AMQMethodBodyInstanceFactory[$amqpClass.getMaximumMethodId()+1];
+		
+#foreach( $amqpMethod in $amqpClass.getMethodList() )
+#set( $amqpMethodNameFirstChar = $amqpMethod.getName().substring(0,1) )
+#set( $amqpMethodNameFirstCharU = $amqpMethodNameFirstChar.toUpperCase() )
+#set( $amqpMethodNameUpperCamel = "$amqpMethodNameFirstCharU$amqpMethod.getName().substring(1)" )
+        _factories[$amqpClass.getClassId()][$amqpMethod.getMethodId()] = ${amqpClassNameUpperCamel}${amqpMethodNameUpperCamel}BodyImpl.getFactory(); 
+#end		
+		
+#end
+		
+		
+	}
+
+
+    public AMQMethodBody convertToBody(ByteBuffer in, long size)
+        throws AMQFrameDecodingException
+    {
+	    int classId = in.getUnsignedShort();
+		int methodId = in.getUnsignedShort();
+	
+        AMQMethodBodyInstanceFactory bodyFactory;
+        try
+        {
+            bodyFactory = _factories[classId][methodId];
+        }
+        catch(NullPointerException e)
+        {
+            throw new AMQFrameDecodingException(_log,
+                "Class " + classId + " unknown in AMQP version $version.getMajor()-$version.getMinor()"
+                 + " (while trying to decode class " + classId + " method " + methodId + ".");
+        }
+        catch(IndexOutOfBoundsException e)
+        {
+            if(classId >= _factories.length)
+            {
+                throw new AMQFrameDecodingException(_log,
+                    "Class " + classId + " unknown in AMQP version $version.getMajor()-$version.getMinor()"
+                     + " (while trying to decode class " + classId + " method " + methodId + ".");
+
+            }
+            else
+            {
+                throw new AMQFrameDecodingException(_log,
+                    "Method " + methodId + " unknown in AMQP version $version.getMajor()-$version.getMinor()"
+                     + " (while trying to decode class " + classId + " method " + methodId + ".");
+
+            }
+        }
+
+
+        if (bodyFactory == null)
+        {
+            throw new AMQFrameDecodingException(_log,
+                "Method " + methodId + " unknown in AMQP version $version.getMajor()-$version.getMinor()"
+                 + " (while trying to decode class " + classId + " method " + methodId + ".");
+        }
+
+
+        return bodyFactory.newInstance(in, size);
+
+
+    }
+
+
+    public int getMaxClassId()
+	{
+	    return $specificModel.getMaximumClassId();
+	}
+    
+    public int getMaxMethodId(int classId)
+	{
+        return _factories[classId].length - 1;	
+	}
+	
+    
+}