Encapsulate CLevelDB iterators cleanly

Conflicts:
	src/leveldb.cpp
	src/leveldb.h
	src/txdb.cpp

1 files changed, 8 insertions, 1 deletions

diff --git a/src/leveldbwrapper.cpp b/src/leveldbwrapper.cpp
index ce96b5c8aa..a94cfd8a30 100644
--- a/src/leveldbwrapper.cpp
+++ b/src/leveldbwrapper.cpp
@@ -131,7 +131,7 @@ std::vector<unsigned char> CLevelDBWrapper::CreateObfuscateKey() const
 
 bool CLevelDBWrapper::IsEmpty()
 {
-    boost::scoped_ptr<leveldb::Iterator> it(NewIterator());
+    boost::scoped_ptr<CLevelDBIterator> it(NewIterator());
     it->SeekToFirst();
     return !(it->Valid());
 }
@@ -145,3 +145,10 @@ std::string CLevelDBWrapper::GetObfuscateKeyHex() const
 { 
     return HexStr(obfuscate_key); 
 }
+ 
+CLevelDBIterator::~CLevelDBIterator() { delete piter; }
+bool CLevelDBIterator::Valid() { return piter->Valid(); }
+void CLevelDBIterator::SeekToFirst() { piter->SeekToFirst(); }
+void CLevelDBIterator::SeekToLast() { piter->SeekToLast(); }
+void CLevelDBIterator::Next() { piter->Next(); }
+void CLevelDBIterator::Prev() { piter->Prev(); }