Add info issues for empty edits and no warnings

extensions/wikidata/module/langs/translation-en.json

@@ -92,6 +92,14 @@
                 "single-valued-property-added-more-than-once": {
                         "title": "Single valued property added more than once.",
                         "body": "A property that is expected to be used at most once on each item has been added multiple times on the same item."
+                },
+                "no-edit-generated": {
+                        "title": "No edit was generated.",
+                        "body": "There might be something wrong with your schema."
+                },
+                "no-issue-detected": {
+                        "title": "No issue was detected in your edits.",
+                        "body": "Note that OpenRefine cannot detect all the types of problems Wikidata edits can have."
                 }
        }
 }

extensions/wikidata/src/org/openrefine/wikidata/qa/EditInspector.java

@@ -8,6 +8,7 @@ import org.openrefine.wikidata.qa.scrutinizers.EditScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.FormatConstraintScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.InverseConstraintScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.NewItemScrutinizer;
+import org.openrefine.wikidata.qa.scrutinizers.NoEditsMadeScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.QualifierCompatibilityScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.RestrictedPositionScrutinizer;
 import org.openrefine.wikidata.qa.scrutinizers.SelfReferentialScrutinizer;
@@ -37,6 +38,7 @@ public class EditInspector {
         register(new RestrictedPositionScrutinizer());
         register(new QualifierCompatibilityScrutinizer());
         register(new SingleValueScrutinizer());
+        register(new NoEditsMadeScrutinizer());
     }
     
     /**
@@ -58,6 +60,11 @@ public class EditInspector {
         for(EditScrutinizer scrutinizer : scrutinizers.values()) {
             scrutinizer.scrutinize(editBatch);
         }
+        
+        if (warningStore.getNbWarnings() == 0) {
+            warningStore.addWarning(new QAWarning(
+                "no-issue-detected", null, QAWarning.Severity.INFO, 0));
+        }
     }
     
     /**

extensions/wikidata/src/org/openrefine/wikidata/qa/QAWarningStore.java

@@ -16,6 +16,7 @@ public class QAWarningStore {
     
     private Map<String, QAWarning> map;
     private QAWarning.Severity maxSeverity;
+    private int totalWarnings;
     
     public QAWarningStore() {
         this.map = new HashMap<>();
@@ -32,6 +33,7 @@ public class QAWarningStore {
         if (severity.compareTo(maxSeverity) > 0) {
             maxSeverity = severity;
         }
+        totalWarnings += warning.getCount();
         if (map.containsKey(aggregationKey)) {
             QAWarning existing = map.get(aggregationKey);
             existing.aggregate(warning);
@@ -57,4 +59,12 @@ public class QAWarningStore {
     QAWarning.Severity getMaxSeverity() {
         return maxSeverity;
     }
+    
+    /**
+     * Returns the total number of warnings
+     */
+    @JsonProperty("nb_warnings")
+    int getNbWarnings() {
+        return totalWarnings;
+    }
 }

extensions/wikidata/src/org/openrefine/wikidata/qa/scrutinizers/NoEditsMadeScrutinizer.java

@@ -0,0 +1,18 @@
+package org.openrefine.wikidata.qa.scrutinizers;
+
+import java.util.List;
+
+import org.openrefine.wikidata.schema.ItemUpdate;
+
+
+public class NoEditsMadeScrutinizer extends EditScrutinizer {
+
+    @Override
+    public void scrutinize(List<ItemUpdate> edit) {
+        if(edit.stream().allMatch(e -> e.isNull())) {
+            info("no-edit-generated");
+        }
+
+    }
+
+}