From c72450e9834d469cfec604d4c4b2e89640dd431f Mon Sep 17 00:00:00 2001
From: Jianping Wu <jianping.wu@gmail.com>
Date: Fri, 2 Nov 2018 12:25:41 -0700
Subject: [PATCH] Stored the latest tx output in namespace data.

---
 src/coins.cpp       | 10 +++++++---
 src/keva/common.cpp |  6 ++++++
 src/keva/common.h   | 11 +++++++++++
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/src/coins.cpp b/src/coins.cpp
index 778602449..8db1600c7 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -200,9 +200,9 @@ CNameIterator* CCoinsViewCache::IterateNames() const {
    name history.  */
 void CCoinsViewCache::SetName(const valtype &nameSpace, const valtype &key, const CKevaData& data, bool undo)
 {
+#if 0
     CKevaData oldData;
     if (GetName(nameSpace, key, oldData)) {
-#if 0
         cacheNames.removeExpireIndex(name, oldData.getHeight());
 
         /* Update the name history.  If we are undoing, we expect that
@@ -228,11 +228,15 @@ void CCoinsViewCache::SetName(const valtype &nameSpace, const valtype &key, cons
 
             cacheNames.setHistory(name, history);
         }
-#endif
     } else {
         assert (!undo);
     }
-
+#endif
+    CKevaData namespaceData;
+    if (GetNamespace(nameSpace, namespaceData)) {
+        namespaceData.setUpdateOutpoint(data.getUpdateOutpoint());
+        cacheNames.setNamespace(nameSpace, namespaceData);
+    }
     cacheNames.set(nameSpace, key, data);
 #if 0
     cacheNames.addExpireIndex(name, data.getHeight());
diff --git a/src/keva/common.cpp b/src/keva/common.cpp
index 2e7a4bf79..718d11a4f 100644
--- a/src/keva/common.cpp
+++ b/src/keva/common.cpp
@@ -200,6 +200,12 @@ CKevaCache::GetNamespace(const valtype& nameSpace, CKevaData& data) const
   return get(nameSpace, ValtypeFromString(CKevaScript::KEVA_DISPLAY_NAME_KEY), data);
 }
 
+void
+CKevaCache::setNamespace(const valtype& nameSpace, const CKevaData& data)
+{
+  set(nameSpace, ValtypeFromString(CKevaScript::KEVA_DISPLAY_NAME_KEY), data);
+}
+
 void
 CKevaCache::set(const valtype& nameSpace, const valtype& key, const CKevaData& data)
 {
diff --git a/src/keva/common.h b/src/keva/common.h
index 52df9fdc3..01a8c678a 100644
--- a/src/keva/common.h
+++ b/src/keva/common.h
@@ -130,6 +130,15 @@ public:
     return prevout;
   }
 
+  /**
+   * Get the namespace's updated outpoint.
+   */
+  inline void
+  setUpdateOutpoint (const COutPoint& out)
+  {
+    prevout = out;
+  }
+
   /**
    * Get the address.
    * @return The name's address.
@@ -458,6 +467,8 @@ public:
      removes the "deleted" mark.  */
   void set(const valtype& nameSpace, const valtype& key, const CKevaData& data);
 
+  void setNamespace(const valtype& nameSpace, const CKevaData& data);
+
   /* Delete a name.  If it is in the "entries" set also, remove it there.  */
   void remove(const valtype& nameSpace, const valtype& key);