Changed filtering logic to turn attribute value to lowercase in Java instead of inside the query.

Author: Jalina2007

components/api-resource-mgt/org.wso2.carbon.identity.api.resource.mgt/src/main/java/org/wso2/carbon/identity/api/resource/mgt/util/FilterQueriesUtil.java

@@ -191,28 +191,28 @@ private static void notEqualFilterBuilder(int count, String value, String attrib
     private static void startWithFilterBuilder(int count, String value, String attributeName, StringBuilder filter,
                                                FilterQueryBuilder filterQueryBuilder) {
 
-        String filterString = " LIKE LOWER(?) AND ";
+        String filterString = " LIKE ? AND ";
         String attributeNameWithLowerCaseFunction = "LOWER(" + attributeName + ")";
         filter.append(attributeNameWithLowerCaseFunction).append(filterString);
-        filterQueryBuilder.setFilterAttributeValue(count, value + "%");
+        filterQueryBuilder.setFilterAttributeValue(count, value.toLowerCase() + "%");
     }
 
     private static void endWithFilterBuilder(int count, String value, String attributeName, StringBuilder filter,
                                              FilterQueryBuilder filterQueryBuilder) {
 
-        String filterString = " LIKE LOWER(?) AND ";
+        String filterString = " LIKE ? AND ";
         String attributeNameWithLowerCaseFunction = "LOWER(" + attributeName + ")";
         filter.append(attributeNameWithLowerCaseFunction).append(filterString);
-        filterQueryBuilder.setFilterAttributeValue(count, "%" + value);
+        filterQueryBuilder.setFilterAttributeValue(count, "%" + value.toLowerCase());
     }
 
     private static void containsFilterBuilder(int count, String value, String attributeName, StringBuilder filter,
                                               FilterQueryBuilder filterQueryBuilder) {
 
-        String filterString = " LIKE LOWER(?) AND ";
+        String filterString = " LIKE ? AND ";
         String attributeNameWithLowerCaseFunction = "LOWER(" + attributeName + ")";
         filter.append(attributeNameWithLowerCaseFunction).append(filterString);
-        filterQueryBuilder.setFilterAttributeValue(count, "%" + value + "%");
+        filterQueryBuilder.setFilterAttributeValue(count, "%" + value.toLowerCase() + "%");
     }
 
     private static void greaterThanOrEqualFilterBuilder(int count, String value, String attributeName,