Fix some quality flaws

3 files changed, 4 insertions, 2 deletions

diff --git a/sonar-batch/src/main/java/org/sonar/batch/DefaultSensorContext.java b/sonar-batch/src/main/java/org/sonar/batch/DefaultSensorContext.java
index bbeb88afdb8..39b181710b2 100644
--- a/sonar-batch/src/main/java/org/sonar/batch/DefaultSensorContext.java
+++ b/sonar-batch/src/main/java/org/sonar/batch/DefaultSensorContext.java
@@ -207,6 +207,7 @@ public class DefaultSensorContext implements SensorContext {
   }
 
   public void saveSource(Resource reference, String source) {
+    // useless since 4.2.
   }
 
   public void saveLink(ProjectLink link) {
diff --git a/sonar-batch/src/main/java/org/sonar/batch/index/Cache.java b/sonar-batch/src/main/java/org/sonar/batch/index/Cache.java
index 37749efbeb7..792d273c162 100644
--- a/sonar-batch/src/main/java/org/sonar/batch/index/Cache.java
+++ b/sonar-batch/src/main/java/org/sonar/batch/index/Cache.java
@@ -404,6 +404,7 @@ public class Cache<V extends Serializable> {
 
     @Override
     public void remove() {
+      throw new UnsupportedOperationException("Removing an item is not supported");
     }
   }
 
@@ -529,7 +530,7 @@ public class Cache<V extends Serializable> {
 
     @Override
     public void remove() {
-      // nothing to do
+      throw new UnsupportedOperationException("Removing an item is not supported");
     }
   }
 
diff --git a/sonar-batch/src/main/java/org/sonar/batch/scan/filesystem/LanguageDetection.java b/sonar-batch/src/main/java/org/sonar/batch/scan/filesystem/LanguageDetection.java
index c34e0d42184..c6f6cc6b42a 100644
--- a/sonar-batch/src/main/java/org/sonar/batch/scan/filesystem/LanguageDetection.java
+++ b/sonar-batch/src/main/java/org/sonar/batch/scan/filesystem/LanguageDetection.java
@@ -109,7 +109,7 @@ class LanguageDetection {
       }
     }
     if (detectedLanguage != null) {
-      LOG.debug("Language of file '" + inputFile.relativePath() + "' was detected to be '" + detectedLanguage + "'");
+      LOG.debug(String.format("Language of file '%s' is detected to be '%s'", inputFile.relativePath(), detectedLanguage));
       return detectedLanguage;
     }