1 files changed, 100 insertions, 0 deletions

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