src/main/java/ru/ulstu/extractor/model/LineChange.java

@@ -10,9 +10,8 @@ import javax.persistence.Entity;
 @Entity
 public class LineChange extends BaseEntity {
 
-    private Boolean added;
-
-    private Boolean removed;
+    private Boolean added = false;
+    private Boolean removed = false;
     private String lineFrom;
     private String lineTo;
 

src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java

@@ -260,6 +260,7 @@ public class GitRepositoryService {
                             }
                         }
                     }
+                    lineChange.setRemoved(true);
                 }
                 if (strings[i].startsWith("+")) {
                     while ((i < stringsLength) && strings[i].startsWith("+")) {
@@ -275,6 +276,7 @@ public class GitRepositoryService {
                             }
                         }
                     }
+                    lineChange.setAdded(true);
                 }
                 if ((lineChange.getLineTo() != null) || (lineChange.getLineFrom() != null)
                         || ((lineChange.getLineTo() != null) && (lineChange.getLineFrom() != null))) {