Add null backend factory

modules/ripple_app/node/ripple_NullBackendFactory.cpp

@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+/*
+    Copyright (c) 2011-2013, OpenCoin, Inc.
+*/
+//==============================================================================
+
+class NullBackendFactory::Backend : public NodeStore::Backend
+{
+public:
+    Backend ()
+    {
+    }
+
+    ~Backend ()
+    {
+    }
+
+    std::string getDataBaseName()
+    {
+        return std::string ();
+    }
+
+    bool store (NodeObject::ref obj)
+    {
+        return false;
+    }
+
+    bool bulkStore (const std::vector< NodeObject::pointer >& objs)
+    {
+        return false;
+    }
+
+    NodeObject::pointer retrieve (uint256 const& hash)
+    {
+        return NodeObject::pointer ();
+    }
+
+    void visitAll (FUNCTION_TYPE <void (NodeObject::pointer)> func)
+    {
+    }
+};
+
+//------------------------------------------------------------------------------
+
+NullBackendFactory::NullBackendFactory ()
+{
+}
+
+NullBackendFactory::~NullBackendFactory ()
+{
+}
+
+NullBackendFactory& NullBackendFactory::getInstance ()
+{
+    static NullBackendFactory instance;
+
+    return instance;
+}
+
+String NullBackendFactory::getName () const
+{
+    return "none";
+}
+
+NodeStore::Backend* NullBackendFactory::createInstance (StringPairArray const& keyValues)
+{
+    return new NullBackendFactory::Backend;
+}
+
+//------------------------------------------------------------------------------
+

modules/ripple_app/node/ripple_NullBackendFactory.h

@@ -0,0 +1,29 @@
+//------------------------------------------------------------------------------
+/*
+    Copyright (c) 2011-2013, OpenCoin, Inc.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_NULLBACKENDFACTORY_H_INCLUDED
+#define RIPPLE_NULLBACKENDFACTORY_H_INCLUDED
+
+/** Factory to produce a null backend.
+
+    This is for standalone / testing mode.
+*/
+class NullBackendFactory : public NodeStore::BackendFactory
+{
+private:
+    class Backend;
+
+    NullBackendFactory ();
+    ~NullBackendFactory ();
+
+public:
+    static NullBackendFactory& getInstance ();
+
+    String getName () const;
+    NodeStore::Backend* createInstance (StringPairArray const& keyValues);
+};
+
+#endif