From 90a51615bec786fac6750616e82570cf8727db06 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Fri, 16 Jan 2009 00:30:59 +0000
Subject: Whoa, Bu::CacheStoreNids totally works now, it's even tested and
 everything.

Isn't that great?
---
 src/cachestorenids.h | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)

(limited to 'src')

diff --git a/src/cachestorenids.h b/src/cachestorenids.h
index e69de29..f488117 100644
--- a/src/cachestorenids.h
+++ b/src/cachestorenids.h
@@ -0,0 +1,100 @@
+#ifndef BU_CACHE_STORE_NIDS_H
+#define BU_CACHE_STORE_NIDS_H
+
+#include "bu/fstring.h"
+#include "bu/stream.h"
+#include "bu/nids.h"
+#include "bu/nidsstream.h"
+#include "bu/cachestore.h"
+
+namespace Bu
+{
+	template<class obtype, class keytype>
+	class CacheStoreNids : public CacheStore<obtype, keytype>
+	{
+	public:
+		CacheStoreNids( Bu::Stream &sArch,
+			int iBlockSize=1024, int iPreAllocate=1 ) :
+			nStore( sArch )
+		{
+			try
+			{
+				nStore.initialize();
+				NidsStream ns = nStore.openStream( 0 );
+				Bu::Archive ar( ns, Bu::Archive::load );
+				ar >> hId;
+			}
+			catch( Bu::NidsException &e )
+			{
+				nStore.initialize( iBlockSize, iPreAllocate );
+				int iStream = nStore.createStream();
+				if( iStream != 0 )
+					printf("That's...horrible...id = %d.\n\n", iStream );
+				NidsStream ns = nStore.openStream( 0 );
+				Bu::Archive ar( ns, Bu::Archive::save );
+				ar << hId;
+			}
+		}
+
+		virtual ~CacheStoreNids()
+		{
+			NidsStream ns = nStore.openStream( 0 );
+			Bu::Archive ar( ns, Bu::Archive::save );
+			ar << hId;
+		}
+		
+		virtual obtype *load( const keytype &key )
+		{
+			int iStream = hId.get( key );
+			NidsStream ns = nStore.openStream( iStream );
+			Bu::Archive ar( ns, Bu::Archive::load );
+			obtype *pOb = new obtype();
+			ar >> (*pOb);
+			return pOb;
+		}
+
+		virtual void unload( obtype *pObj, const keytype &key )
+		{
+			int iStream = hId.get( key );
+			NidsStream ns = nStore.openStream( iStream );
+			Bu::Archive ar( ns, Bu::Archive::save );
+			ar << (*pObj);
+			delete pObj;
+		}
+
+		virtual keytype getKey( obtype *pSrc )=0;
+
+		virtual keytype create( obtype *pSrc )
+		{
+			keytype key = getKey( pSrc );
+			int iStream = nStore.createStream();
+			hId.insert( key, iStream );
+			printf("Creating stream:  %d\n", iStream );
+			NidsStream ns = nStore.openStream( iStream );
+			Bu::Archive ar( ns, Bu::Archive::save );
+			obtype *pOb = new obtype();
+			ar << (*pOb);
+			return key;
+		}
+
+		virtual void destroy( obtype *pObj, const keytype &key )
+		{
+			int iStream = hId.get( key );
+			nStore.deleteStream( iStream );
+			hId.erase( key );
+			delete pObj;
+		}
+
+		Bu::List<keytype> getKeys()
+		{
+			return hId.getKeys();
+		}
+
+	private:
+		Nids nStore;
+		typedef Bu::Hash<keytype, long> NidHash;
+		NidHash hId;
+	};
+};
+
+#endif
-- 
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