fix: handle nullpointer during csv exports

#2280

Author: jo-elimu

src/main/java/ai/elimu/web/analytics/students/LetterSoundAssessmentEventsCsvExportController.java

@@ -61,20 +61,20 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (LetterSoundAssessmentEvent letterSoundAssessmentEvent : letterSoundAssessmentEvents) {
-        log.info("letterSoundAssessmentEvent.getId(): " + letterSoundAssessmentEvent.getId());
+      for (LetterSoundAssessmentEvent event : letterSoundAssessmentEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            letterSoundAssessmentEvent.getId(),
-            letterSoundAssessmentEvent.getTimestamp().getTimeInMillis() / 1_000,
-            letterSoundAssessmentEvent.getPackageName(),
-            letterSoundAssessmentEvent.getMasteryScore(),
-            letterSoundAssessmentEvent.getTimeSpentMs(),
-            letterSoundAssessmentEvent.getAdditionalData(),
-            letterSoundAssessmentEvent.getResearchExperiment().ordinal(),
-            letterSoundAssessmentEvent.getExperimentGroup().ordinal(),
-            letterSoundAssessmentEvent.getLetterSoundLetters(),
-            letterSoundAssessmentEvent.getLetterSoundSounds(),
-            letterSoundAssessmentEvent.getLetterSoundId()
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getMasteryScore(),
+            event.getTimeSpentMs(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
+            event.getLetterSoundLetters(),
+            event.getLetterSoundSounds(),
+            event.getLetterSoundId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/LetterSoundLearningEventsCsvExportController.java

@@ -60,18 +60,18 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (LetterSoundLearningEvent letterSoundLearningEvent : letterSoundLearningEvents) {
-        log.info("letterSoundLearningEvent.getId(): " + letterSoundLearningEvent.getId());
+      for (LetterSoundLearningEvent event : letterSoundLearningEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            letterSoundLearningEvent.getId(),
-            letterSoundLearningEvent.getTimestamp().getTimeInMillis() / 1_000,
-            letterSoundLearningEvent.getPackageName(),
-            letterSoundLearningEvent.getAdditionalData(),
-            letterSoundLearningEvent.getResearchExperiment().ordinal(),
-            letterSoundLearningEvent.getExperimentGroup().ordinal(),
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
             // letterSoundLearningEvent.getLetterSoundLetters(),
             // letterSoundLearningEvent.getLetterSoundSounds(),
-            letterSoundLearningEvent.getLetterSoundId()
+            event.getLetterSoundId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/NumberLearningEventsCsvExportController.java

@@ -61,19 +61,19 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (NumberLearningEvent numberLearningEvent : numberLearningEvents) {
-        log.info("numberLearningEvent.getId(): " + numberLearningEvent.getId());
+      for (NumberLearningEvent event : numberLearningEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            numberLearningEvent.getId(),
-            numberLearningEvent.getTimestamp().getTimeInMillis() / 1_000,
-            numberLearningEvent.getPackageName(),
-            numberLearningEvent.getLearningEventType(),
-            numberLearningEvent.getAdditionalData(),
-            numberLearningEvent.getResearchExperiment().ordinal(),
-            numberLearningEvent.getExperimentGroup().ordinal(),
-            numberLearningEvent.getNumberValue(),
-            numberLearningEvent.getNumberSymbol(),
-            numberLearningEvent.getNumberId()
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getLearningEventType(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
+            event.getNumberValue(),
+            event.getNumberSymbol(),
+            event.getNumberId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/StoryBookLearningEventsCsvExportController.java

@@ -64,18 +64,18 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (StoryBookLearningEvent storyBookLearningEvent : storyBookLearningEvents) {
-        log.info("storyBookLearningEvent.getId(): " + storyBookLearningEvent.getId());
+      for (StoryBookLearningEvent event : storyBookLearningEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            storyBookLearningEvent.getId(),
-            storyBookLearningEvent.getTimestamp().getTimeInMillis() / 1_000,
-            storyBookLearningEvent.getPackageName(),
-            storyBookLearningEvent.getLearningEventType(),
-            storyBookLearningEvent.getAdditionalData(),
-            storyBookLearningEvent.getResearchExperiment().ordinal(),
-            storyBookLearningEvent.getExperimentGroup().ordinal(),
-            storyBookLearningEvent.getStoryBookTitle(),
-            storyBookLearningEvent.getStoryBookId()
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getLearningEventType(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
+            event.getStoryBookTitle(),
+            event.getStoryBookId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/VideoLearningEventsCsvExportController.java

@@ -65,18 +65,18 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (VideoLearningEvent videoLearningEvent : videoLearningEvents) {
-        log.info("videoLearningEvent.getId(): " + videoLearningEvent.getId());
+      for (VideoLearningEvent event : videoLearningEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            videoLearningEvent.getId(),
-            videoLearningEvent.getTimestamp().getTimeInMillis() / 1_000,
-            videoLearningEvent.getPackageName(),
-            videoLearningEvent.getLearningEventType(),
-            videoLearningEvent.getAdditionalData(),
-            videoLearningEvent.getResearchExperiment().ordinal(),
-            videoLearningEvent.getExperimentGroup().ordinal(),
-            videoLearningEvent.getVideoTitle(),
-            videoLearningEvent.getVideoId()
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getLearningEventType(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
+            event.getVideoTitle(),
+            event.getVideoId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/WordAssessmentEventsCsvExportController.java

@@ -61,19 +61,19 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (WordAssessmentEvent wordAssessmentEvent : wordAssessmentEvents) {
-        log.info("wordAssessmentEvent.getId(): " + wordAssessmentEvent.getId());
+      for (WordAssessmentEvent event : wordAssessmentEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
-            wordAssessmentEvent.getId(),
-            wordAssessmentEvent.getTimestamp().getTimeInMillis() / 1_000,
-            wordAssessmentEvent.getPackageName(),
-            wordAssessmentEvent.getMasteryScore(),
-            wordAssessmentEvent.getTimeSpentMs(),
-            wordAssessmentEvent.getAdditionalData(),
-            wordAssessmentEvent.getResearchExperiment().ordinal(),
-            wordAssessmentEvent.getExperimentGroup().ordinal(),
-            wordAssessmentEvent.getWordText(),
-            wordAssessmentEvent.getWordId()
+            event.getId(),
+            event.getTimestamp().getTimeInMillis() / 1_000,
+            event.getPackageName(),
+            event.getMasteryScore(),
+            event.getTimeSpentMs(),
+            event.getAdditionalData(),
+            (event.getResearchExperiment() != null) ? event.getResearchExperiment().ordinal() : null,
+            (event.getExperimentGroup() != null) ? event.getExperimentGroup().ordinal() : null,
+            event.getWordText(),
+            event.getWordId()
         );
       }
       csvPrinter.flush();

src/main/java/ai/elimu/web/analytics/students/WordLearningEventsCsvExportController.java

@@ -60,8 +60,8 @@ public void handleRequest(
           ).build();
       StringWriter stringWriter = new StringWriter();
       CSVPrinter csvPrinter = new CSVPrinter(stringWriter, csvFormat);
-      for (WordLearningEvent wordLearningEvent : wordLearningEvents) {
-        log.info("wordLearningEvent.getId(): " + wordLearningEvent.getId());
+      for (WordLearningEvent event : wordLearningEvents) {
+        log.info("event.getId(): " + event.getId());
         csvPrinter.printRecord(
             wordLearningEvent.getId(),
             wordLearningEvent.getTimestamp().getTimeInMillis() / 1_000,