added shared cache support to sqlite

Data/SQLite/Makefile

@@ -8,7 +8,8 @@
 
 include $(POCO_BASE)/build/rules/global
 
-SYSFLAGS += -DTHREADSAFE -DNO_TCL -DSQLITE_DISABLE_LFS
+SYSFLAGS += -DSQLITE_OMIT_UTF16 -DSQLITE_OMIT_PROGRESS_CALLBACK \
+	-DSQLITE_OMIT_COMPLETE -DSQLITE_OMIT_TCL_VARIABLE
 
 objects = Binder Extractor SessionImpl Connector \
 	SQLiteException SQLiteStatementImpl Utility \

Data/SQLite/include/Poco/Data/SQLite/Connector.h

@@ -73,6 +73,10 @@ public:
 
 	static void unregisterConnector();
 		/// Unregisters the Connector under the Keyword Connector::KEY at the Poco::Data::SessionFactory.
+
+	static void enableSharedCache(bool flag = true);
+		/// Enables or disables SQlite shared cache mode
+		/// (see http://www.sqlite.org/sharedcache.html for a discussion).
 };
 
 

Data/SQLite/src/Connector.cpp

@@ -37,6 +37,7 @@
 #include "Poco/Data/SQLite/Connector.h"
 #include "Poco/Data/SQLite/SessionImpl.h"
 #include "Poco/Data/SessionFactory.h"
+#include "sqlite3.h"
 
 
 namespace Poco {
@@ -75,4 +76,10 @@ void Connector::unregisterConnector()
 }
 
 
+void Connector::enableSharedCache(bool flag)
+{
+	sqlite3_enable_shared_cache(flag ? 1 : 0);
+}
+
+
 } } } // namespace Poco::Data::SQLite