Replacing .equals with .isEmpty empty string check in Detdashboard analytics feature

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/AbstractGadgetDataServiceDAO.java

@@ -116,7 +116,7 @@ public abstract class AbstractGadgetDataServiceDAO implements GadgetDataServiceD
     public DeviceCountByGroupEntry getFeatureNonCompliantDeviceCount(String nonCompliantFeatureCode,
                                              FilterSet filterSet) throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 
@@ -302,7 +302,7 @@ public abstract class AbstractGadgetDataServiceDAO implements GadgetDataServiceD
                          getFeatureNonCompliantDeviceCountsByPlatforms(String nonCompliantFeatureCode,
                                              FilterSet filterSet) throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 
@@ -416,7 +416,7 @@ public abstract class AbstractGadgetDataServiceDAO implements GadgetDataServiceD
                         getFeatureNonCompliantDeviceCountsByOwnershipTypes(String nonCompliantFeatureCode,
                                              FilterSet filterSet) throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 
@@ -531,7 +531,7 @@ public abstract class AbstractGadgetDataServiceDAO implements GadgetDataServiceD
     public List<DetailedDeviceEntry> getFeatureNonCompliantDevicesWithDetails(String nonCompliantFeatureCode,
                                              FilterSet filterSet) throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/impl/GenericGadgetDataServiceDAOImpl.java

@@ -188,7 +188,7 @@ public class GenericGadgetDataServiceDAOImpl extends AbstractGadgetDataServiceDA
                                                          FilterSet filterSet, int startIndex, int resultCount)
                                                                   throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/impl/MSSQLGadgetDataServiceDAOImpl.java

@@ -190,7 +190,7 @@ public class MSSQLGadgetDataServiceDAOImpl extends AbstractGadgetDataServiceDAO
                                                         FilterSet filterSet, int startIndex, int resultCount)
                                                                  throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/impl/OracleGadgetDataServiceDAOImpl.java

@@ -190,7 +190,7 @@ public class OracleGadgetDataServiceDAOImpl extends AbstractGadgetDataServiceDAO
                                                        FilterSet filterSet, int startIndex, int resultCount)
                                                                   throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }
 

components/device-mgt/org.wso2.carbon.device.mgt.analytics.dashboard/src/main/java/org/wso2/carbon/device/mgt/analytics/dashboard/dao/impl/PostgreSQLGadgetDataServiceDAOImpl.java

@@ -188,7 +188,7 @@ public class PostgreSQLGadgetDataServiceDAOImpl extends AbstractGadgetDataServic
                                                         FilterSet filterSet, int startIndex, int resultCount)
                                                                   throws InvalidParameterValueException, SQLException {
 
-        if (nonCompliantFeatureCode == null || "".equals(nonCompliantFeatureCode)) {
+        if (nonCompliantFeatureCode == null || nonCompliantFeatureCode.isEmpty()) {
             throw new InvalidParameterValueException("Non-compliant feature code should not be either null or empty.");
         }