galovics commented on code in PR #2659:
URL: https://github.com/apache/fineract/pull/2659#discussion_r995498476


##########
fineract-provider/src/main/java/org/apache/fineract/infrastructure/dataqueries/service/ReadWriteNonCoreDataServiceImpl.java:
##########
@@ -183,6 +192,116 @@ public DatatableData retrieveDatatable(final String 
datatable) {
         return datatableData;
     }
 
+    @Override
+    public List<JsonObject> queryDataTable(String datatable, String 
columnFilter, String valueFilter, String resultColumns) {
+        Arrays.asList(datatable, columnFilter, valueFilter, 
resultColumns).forEach(SQLInjectionValidator::validateDynamicQuery);
+        List<String> resultColumnNames = 
Stream.of(resultColumns.split(",")).toList();
+        String sql = "select " + resultColumns + " from " + datatable + " 
where " + columnFilter + " = ?";
+
+        List<ResultsetColumnHeaderData> resultsetColumnHeaderData = 
genericDataService.fillResultsetColumnHeaders(datatable);
+        Object finalValueFilter = valueFilter;
+        SqlRowSet rowSet = null;
+        String filterColumnType = 
resultsetColumnHeaderData.stream().filter(column -> 
columnFilter.equals(column.getColumnName()))
+                
.findFirst().map(ResultsetColumnHeaderData::getColumnType).orElse(columnFilter 
+ " does not exist in datatable");
+        if (databaseTypeResolver.isPostgreSQL()) {
+            int[] argType = new int[1];
+            if ("bit".equalsIgnoreCase(filterColumnType)) {
+                finalValueFilter = 
BooleanUtils.toString(BooleanUtils.toBooleanObject(valueFilter), "1", "0", 
"null");
+                argType[0] = Types.BIT;
+            } else if ("boolean".equalsIgnoreCase(filterColumnType) || 
"bool".equalsIgnoreCase(filterColumnType)) {
+                finalValueFilter = 
BooleanUtils.toString(BooleanUtils.toBooleanObject(valueFilter), "true", 
"false", "null");
+                argType[0] = Types.BOOLEAN;
+            } else if ("integer".equalsIgnoreCase(filterColumnType)) {

Review Comment:
   I hope I don't need to expain the Boy Scout Rule: “Always leave the 
campground cleaner than you found it”
   
   In fact, you don't need to extract magic Strings all over the codebase, 
obviously. I'm just stating that you duplicated/triplicated the magic Strings 
so why don't you locally extract it at least?



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