--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlib/naming/SchemeTable.h	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,69 @@
+/*
+ *    Copyright 2005-2006 Intel Corporation
+ * 
+ *    Licensed 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.
+ */
+
+#ifndef _SCHEME_TABLE_H_
+#define _SCHEME_TABLE_H_
+
+#include <oasys/util/Singleton.h>
+#include <oasys/util/StringUtils.h>
+
+namespace dtn {
+
+class Scheme;
+
+/**
+ * The table of registered endpoint id schemes.
+ */
+class SchemeTable : public oasys::Singleton<SchemeTable> {
+private:
+    friend class oasys::Singleton<SchemeTable>;
+    
+    /**
+     * Constructor -- instantiates and registers all known schemes.
+     * Called from the singleton instance() method the first time the
+     * table is accessed.
+     */
+    SchemeTable();
+
+    /**
+     * Destructor cleans up the known schemes and is called at
+     * shutdown time.
+     */
+    virtual ~SchemeTable();
+
+public:
+    /**
+     * Register the given scheme.
+     */
+    void register_scheme(const std::string& scheme_str, Scheme* scheme);
+    
+    /**
+     * Find the appropriate Scheme instance based on the URI
+     * scheme of the endpoint id scheme.
+     *
+     * @return the instance if it exists or NULL if there's no match
+     */ 
+    Scheme* lookup(const std::string& scheme_str);
+
+protected:
+    static SchemeTable* instance_;
+    typedef oasys::StringHashMap<Scheme*> SchemeMap;
+    SchemeMap table_;
+};
+
+}
+
+#endif /* _SCHEME_TABLE_H_ */