Use the transaction master.

TransactionMaster.h

@@ -0,0 +1,24 @@
+#ifndef __TRANSACTIONMASTER__
+#define __TRANSACTIONMASTER__
+
+#include "Transaction.h"
+#include "TaggedCache.h"
+
+// Tracks all transactions in memory
+
+class TransactionMaster
+{
+protected:
+	TaggedCache<uint256, Transaction> mCache;
+
+public:
+
+	TransactionMaster();
+
+	Transaction::pointer fetch(const uint256&, bool checkDisk);
+
+	// return value: true = we had the transaction already
+	bool canonicalize(Transaction::pointer& txn, bool maybeNew);
+};
+
+#endif