wl1671 - bug fixes for negative tests

ndb/src/ndbapi/NdbScanOperation.cpp:
  Extra printout if DEBUG_NEXT_RESULT
  Set theError.code so one can't call nextResult after it has once returned 1
ndb/test/ndbapi/ScanFunctions.hpp:
  Update testcases
ndb/test/ndbapi/testScan.cpp:
  ScanWitoutOpenScan isn't really relevent anymore

ndb/src/ndbapi/NdbScanOperation.cpp

@@ -448,6 +448,8 @@ NdbScanOperation::executeCursor(int nodeId){
   return -1;
 }
 
+#define DEBUG_NEXT_RESULT 0
+
 int NdbScanOperation::nextResult(bool fetchAllowed)
 {
   if(m_ordered)
@@ -460,6 +462,9 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
   Uint32 idx = m_current_api_receiver;
   Uint32 last = m_api_receivers_count;
 
+  if(DEBUG_NEXT_RESULT)
+    ndbout_c("nextResult(%d) idx=%d last=%d", fetchAllowed, idx, last);
+  
   /**
    * Check next buckets
    */
@@ -498,6 +503,9 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
       Uint32 cnt = m_conf_receivers_count;
       Uint32 sent = m_sent_receivers_count;
 
+      if(DEBUG_NEXT_RESULT)
+	ndbout_c("idx=%d last=%d cnt=%d sent=%d", idx, last, cnt, sent);
+	
       if(cnt > 0){
 	/**
 	 * Just move completed receivers
@@ -527,6 +535,7 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
 	  theNdb->theWaiter.m_state = WAIT_SCAN;
 	  int return_code = theNdb->receiveResponse(WAITFOR_SCAN_TIMEOUT);
 	  if (return_code == 0 && seq == tp->getNodeSequence(nodeId)) {
+	    theError.code = -1; // make sure user gets error if he tries again
 	    return 1;
 	  }
 	  retVal = -1; //return_code;
@@ -1193,8 +1202,6 @@ NdbIndexScanOperation::compare(Uint32 skip, Uint32 cols,
   return 0;
 }
 
-#define DEBUG_NEXT_RESULT 0
-
 int
 NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
   

ndb/test/ndbapi/ScanFunctions.hpp

@@ -79,9 +79,9 @@ ScanFunctions::scanReadFunctions(Ndb* pNdb,
   const int            retryMax = 100;
   int sleepTime = 10;
   int                  check;
-  NdbConnection	       *pTrans;
-  NdbScanOperation     *pOp;
-  NdbResultSet         *rs;
+  NdbConnection	       *pTrans = 0;
+  NdbScanOperation     *pOp = 0;
+  NdbResultSet         *rs = 0;
 
   while (true){
     if (retryAttempt >= retryMax){
@@ -104,8 +104,6 @@ ScanFunctions::scanReadFunctions(Ndb* pNdb,
     }
     
     // Execute the scan without defining a scan operation
-    if(action != ExecuteScanWithOutOpenScan){
-      
     pOp = pTrans->getNdbScanOperation(tab.getName());	
     if (pOp == NULL) {
       ERR(pTrans->getNdbError());
@@ -158,7 +156,7 @@ ScanFunctions::scanReadFunctions(Ndb* pNdb,
 	return NDBT_FAILED;
       }
     }      
-    }
+    
     check = pTrans->execute(NoCommit);
     if( check == -1 ) {
       ERR(pTrans->getNdbError());
@@ -166,7 +164,6 @@ ScanFunctions::scanReadFunctions(Ndb* pNdb,
       return NDBT_FAILED;
     }
     
-
     int abortCount = records / 10;
     bool abortTrans = (action==CloseWithoutStop);
     int eof;

ndb/test/ndbapi/testScan.cpp

@@ -805,26 +805,9 @@ int runOnlyOneOpInScanTrans(NDBT_Context* ctx, NDBT_Step* step){
 }
 
 int runExecuteScanWithoutOpenScan(NDBT_Context* ctx, NDBT_Step* step){
-  const NdbDictionary::Table*  pTab = ctx->getTab();
-  int records = ctx->getNumRecords();
-  int numFailed = 0;
-  ScanFunctions scanF(*pTab);
-  if (scanF.scanReadFunctions(GETNDB(step), 
-			      records, 
-			      1,
-			      ScanFunctions::ExecuteScanWithOutOpenScan,
-			      false) == 0){
-    numFailed++;
-  }  
-  
-  if(numFailed > 0)
-    return NDBT_FAILED;
-  else
   return NDBT_OK;
 }
 
-
-
 int runOnlyOneOpBeforeOpenScan(NDBT_Context* ctx, NDBT_Step* step){
   const NdbDictionary::Table*  pTab = ctx->getTab();
   int records = ctx->getNumRecords();