CSVRecord null checks

driver-cql/src/main/java/io/nosqlbench/activitytype/cql/datamappers/functions/long_string/ModuloCSVLineToUUID.java

@@ -52,7 +52,9 @@ public class ModuloCSVLineToUUID implements LongFunction<UUID> {
         CSVParser csvp = NBIO.readFileCSV(filename);
         int column = csvp.getHeaderMap().get(fieldname);
         for (CSVRecord strings : csvp) {
-            lines.add(strings.get(column));
+            if (strings.get(column) != null) {
+                lines.add(strings.get(column));
+            }
         }
     }
 

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/distributions/CSVFrequencySampler.java

@@ -78,9 +78,11 @@ public class CSVFrequencySampler implements LongFunction<String> {
         CSVParser csvdata = NBIO.readFileCSV(filename);
         Frequency freq = new Frequency();
         for (CSVRecord csvdatum : csvdata) {
-            String value = csvdatum.get(columnName);
-            freq.addValue(value);
-            values.add(value);
+            if (csvdatum.get(columnName) != null) {
+                String value = csvdatum.get(columnName);
+                freq.addValue(value);
+                values.add(value);
+            }
         }
         int i = 0;
         for (String value : values) {

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/distributions/DelimFrequencySampler.java

@@ -81,9 +81,11 @@ public class DelimFrequencySampler implements LongFunction<String> {
         CSVParser csvdata = NBIO.readFileDelimCSV(filename,delimiter);
         Frequency freq = new Frequency();
         for (CSVRecord csvdatum : csvdata) {
-            String value = csvdatum.get(columnName);
-            freq.addValue(value);
-            values.add(value);
+            if (csvdatum.get(columnName) != null) {
+                String value = csvdatum.get(columnName);
+                freq.addValue(value);
+                values.add(value);
+            }
         }
         int i = 0;
         for (String value : values) {

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/distributions/WeightedStringsFromCSV.java

@@ -76,10 +76,12 @@ public class WeightedStringsFromCSV implements LongFunction<String> {
             }
             CSVParser csvdata = NBIO.readFileCSV(filename);
             for (CSVRecord csvdatum : csvdata) {
-                String value = csvdatum.get(valueColumn);
-                values.add(value);
-                String weight = csvdatum.get(weightColumn);
-                events.add(new EvProbD(values.size()-1,Double.valueOf(weight)));
+                if (csvdatum.get(valueColumn) != null && csvdatum.get(weightColumn) != null) {
+                    String value = csvdatum.get(valueColumn);
+                    values.add(value);
+                    String weight = csvdatum.get(weightColumn);
+                    events.add(new EvProbD(values.size() - 1, Double.valueOf(weight)));
+                }
             }
         }
         sampler = new AliasSamplerDoubleInt(events);

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/ModuloCSVLineToString.java

@@ -60,7 +60,9 @@ public class ModuloCSVLineToString implements LongFunction<String> {
         }
 
         for (CSVRecord strings : csvp) {
-            lines.add(strings.get(column));
+            if (strings.get(column) != null) {
+                lines.add(strings.get(column));
+            }
         }
     }
 

virtdata-realdata/src/main/resources/data/countries.csv

@@ -240,4 +240,3 @@ EH,Western Sahara
 YE,Yemen
 ZM,Zambia
 ZW,Zimbabwe
-