diff --git a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/ConverterDefinition.java b/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/ConverterDefinition.java
index c31a2f963..79cc75193 100644
--- a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/ConverterDefinition.java
+++ b/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/ConverterDefinition.java
@@ -15,23 +15,16 @@ package org.apache.myrmidon.interfaces.deployer;
 public class ConverterDefinition
     extends TypeDefinition
 {
-    private String m_sourceType;
-    private String m_destinationType;
+    private final String m_sourceType;
+    private final String m_destinationType;
 
-    /**
-     * Returns the type's role.
-     */
-    public String getRoleShorthand()
+    public ConverterDefinition( final String className,
+                                final String sourceType,
+                                final String destinationType )
     {
-        return "converter";
-    }
-
-    /**
-     * Returns the type's name.
-     */
-    public String getName()
-    {
-        return getClassname();
+        super( className, "converter", className );
+        m_sourceType = sourceType;
+        m_destinationType = destinationType;
     }
 
     /**
@@ -42,14 +35,6 @@ public class ConverterDefinition
         return m_sourceType;
     }
 
-    /**
-     * Sets the converter's source type.
-     */
-    public void setSourceType( final String sourceType )
-    {
-        m_sourceType = sourceType;
-    }
-
     /**
      * Returns the converter's destination type.
      */
@@ -57,12 +42,4 @@ public class ConverterDefinition
     {
         return m_destinationType;
     }
-
-    /**
-     * Sets the converter's destination type.
-     */
-    public void setDestinationType( final String destinationType )
-    {
-        m_destinationType = destinationType;
-    }
 }
diff --git a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/GeneralTypeDefinition.java b/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/GeneralTypeDefinition.java
deleted file mode 100644
index 88d3be70a..000000000
--- a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/GeneralTypeDefinition.java
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) The Apache Software Foundation. All rights reserved.
- *
- * This software is published under the terms of the Apache Software License
- * version 1.1, a copy of which has been included  with this distribution in
- * the LICENSE.txt file.
- */
-package org.apache.myrmidon.interfaces.deployer;
-
-/**
- * A general-purpose type definition.
- *
- * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
- */
-public class GeneralTypeDefinition
-    extends TypeDefinition
-{
-    private String m_name;
-    private String m_roleShorthand;
-
-    /**
-     * Returns the type's role.
-     */
-    public String getRoleShorthand()
-    {
-        return m_roleShorthand;
-    }
-
-    /**
-     * Sets the type's role.
-     */
-    public void setType( String roleShorthand )
-    {
-        m_roleShorthand = roleShorthand;
-    }
-
-    /**
-     * Returns the type's name.
-     */
-    public String getName()
-    {
-        return m_name;
-    }
-
-    /**
-     * Sets the type's name.
-     */
-    public void setName( String name )
-    {
-        m_name = name;
-    }
-}
diff --git a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/TypeDefinition.java b/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/TypeDefinition.java
index 9f2cec902..de7a055a9 100644
--- a/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/TypeDefinition.java
+++ b/proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/deployer/TypeDefinition.java
@@ -8,38 +8,46 @@
 package org.apache.myrmidon.interfaces.deployer;
 
 /**
- * A basic type definition.  This class is used to build a type definition,
- * from a typelib descriptor, or via introspection.
+ * A general-purpose type definition.
  *
  * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
  */
-public abstract class TypeDefinition
+public class TypeDefinition
 {
-    private String m_className;
+    private final String m_name;
+    private final String m_role;
+    private final String m_classname;
 
-    /**
-     * Returns the type's name.
-     */
-    public abstract String getName();
+    public TypeDefinition( final String name,
+                           final String roleShorthand,
+                           final String className )
+    {
+        m_name = name;
+        m_role = roleShorthand;
+        m_classname = className;
+    }
 
     /**
-     * Returns the type's role.
+     * Returns the type's implementation class name.
      */
-    public abstract String getRoleShorthand();
+    public final String getClassname()
+    {
+        return m_classname;
+    }
 
     /**
-     * Returns the type's implementation class name.
+     * Returns the type's role.
      */
-    public String getClassname()
+    public final String getRole()
     {
-        return m_className;
+        return m_role;
     }
 
     /**
-     * Sets the type's implementation class name.
+     * Returns the type's name.
      */
-    public void setClassname( final String className )
+    public String getName()
     {
-        m_className = className;
+        return m_name;
     }
 }