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)
@@ -459,6 +461,9 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
   int retVal = 2;
   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
@@ -497,6 +502,9 @@ 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){
 	/**
@@ -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){
@@ -104,78 +104,75 @@ ScanFunctions::scanReadFunctions(Ndb* pNdb,
     }
     
     // Execute the scan without defining a scan operation
-    if(action != ExecuteScanWithOutOpenScan){
-      
-      pOp = pTrans->getNdbScanOperation(tab.getName());	
-      if (pOp == NULL) {
+    pOp = pTrans->getNdbScanOperation(tab.getName());	
+    if (pOp == NULL) {
+      ERR(pTrans->getNdbError());
+      pNdb->closeTransaction(pTrans);
+      return NDBT_FAILED;
+    }
+    
+    
+    rs = pOp->readTuples(exclusive ? 
+			 NdbScanOperation::LM_Exclusive : 
+			 NdbScanOperation::LM_Read);
+    
+    if( rs == 0 ) {
+      ERR(pTrans->getNdbError());
+      pNdb->closeTransaction(pTrans);
+      return NDBT_FAILED;
+    }
+    
+    
+    if (action == OnlyOpenScanOnce){
+      // Call openScan one more time when it's already defined
+      NdbResultSet* rs2 = pOp->readTuples(NdbScanOperation::LM_Read);
+      if( rs2 == 0 ) {
 	ERR(pTrans->getNdbError());
 	pNdb->closeTransaction(pTrans);
 	return NDBT_FAILED;
       }
-      
-      
-      rs = pOp->readTuples(exclusive ? 
-			   NdbScanOperation::LM_Exclusive : 
-			   NdbScanOperation::LM_Read);
-
-      if( rs == 0 ) {
+    }
+    
+    if (action==EqualAfterOpenScan){
+      check = pOp->equal(tab.getColumn(0)->getName(), 10);
+      if( check == -1 ) {
 	ERR(pTrans->getNdbError());
 	pNdb->closeTransaction(pTrans);
 	return NDBT_FAILED;
-      }
-
-      
-      if (action == OnlyOpenScanOnce){
-	// Call openScan one more time when it's already defined
-	NdbResultSet* rs2 = pOp->readTuples(NdbScanOperation::LM_Read);
-	if( rs2 == 0 ) {
-	  ERR(pTrans->getNdbError());
-	  pNdb->closeTransaction(pTrans);
-	  return NDBT_FAILED;
-	}
-      }
-      
-      if (action==EqualAfterOpenScan){
-	check = pOp->equal(tab.getColumn(0)->getName(), 10);
-	if( check == -1 ) {
-	  ERR(pTrans->getNdbError());
-	  pNdb->closeTransaction(pTrans);
-	  return NDBT_FAILED;
-	}	
-      }
-      
-      check = pOp->interpret_exit_ok();
-      if( check == -1 ) {
+      }	
+    }
+    
+    check = pOp->interpret_exit_ok();
+    if( check == -1 ) {
+      ERR(pTrans->getNdbError());
+      pNdb->closeTransaction(pTrans);
+      return NDBT_FAILED;
+    }
+    
+    for(int a = 0; a<tab.getNoOfColumns(); a++){
+      if(pOp->getValue(tab.getColumn(a)->getName()) == NULL) {
 	ERR(pTrans->getNdbError());
 	pNdb->closeTransaction(pTrans);
 	return NDBT_FAILED;
       }
-      
-      for(int a = 0; a<tab.getNoOfColumns(); a++){
-	if(pOp->getValue(tab.getColumn(a)->getName()) == NULL) {
-	  ERR(pTrans->getNdbError());
-	  pNdb->closeTransaction(pTrans);
-	  return NDBT_FAILED;
-	}
-      }      
-    }
+    }      
+    
     check = pTrans->execute(NoCommit);
     if( check == -1 ) {
       ERR(pTrans->getNdbError());
       pNdb->closeTransaction(pTrans);
       return NDBT_FAILED;
     }
-
-
+    
     int abortCount = records / 10;
     bool abortTrans = (action==CloseWithoutStop);
     int eof;
     int rows = 0;
     eof = rs->nextResult();
-
+    
     while(eof == 0){
       rows++;
-
+      
       if (abortCount == rows && abortTrans == true){
 	g_info << "Scan is aborted after "<<abortCount<<" rows" << endl;
 	

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;
+  return NDBT_OK;
 }
 
-
-
 int runOnlyOneOpBeforeOpenScan(NDBT_Context* ctx, NDBT_Step* step){
   const NdbDictionary::Table*  pTab = ctx->getTab();
   int records = ctx->getNumRecords();