--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/FlowVelocityCalculation.java	Fri Sep 05 12:54:58 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/FlowVelocityCalculation.java	Fri Sep 05 12:58:17 2014 +0200
@@ -26,26 +26,26 @@
 /** Calculate flow velocity. */
 public class FlowVelocityCalculation extends Calculation {
 
-    /** Own logger. */
-    private static final Logger logger =
+    /** Own log. */
+    private static final Logger log =
         Logger.getLogger(FlowVelocityCalculation.class);
 
 
     public CalculationResult calculate(FlowVelocityAccess access) {
-        logger.info("FlowVelocityCalculation.calculate");
+        log.info("FlowVelocityCalculation.calculate");
 
         int[] mainIds  = access.getMainChannels();
         int[] totalIds = access.getTotalChannels();
 
-        if (logger.isDebugEnabled()) {
+        if (log.isDebugEnabled()) {
             Artifact a = access.getArtifact();
-            logger.debug("Artifact '" + a.identifier() + "' contains:");
+            log.debug("Artifact '" + a.identifier() + "' contains:");
             if (mainIds != null) {
-                logger.debug("   " + mainIds.length + " main channel ids");
+                log.debug("   " + mainIds.length + " main channel ids");
             }
 
             if (totalIds != null) {
-                logger.debug("   " + totalIds.length + " total channel ids");
+                log.debug("   " + totalIds.length + " total channel ids");
             }
         }
 
@@ -100,7 +100,7 @@
     ) {
         String riverName = access.getRiverName();
         if (riverName == null) {
-            logger.warn("No river name found");
+            log.warn("No river name found");
             return Collections.<FlowVelocityModel>emptyList();
         }
 
@@ -124,7 +124,7 @@
         List<FlowVelocityModelValue> values =
             FlowVelocityModelValue.getValues(model, kmLo, kmHi);
 
-        logger.debug("Found " + values.size() + " values for model.");
+        log.debug("Found " + values.size() + " values for model.");
 
         for (FlowVelocityModelValue value: values) {
             data.addKM(value.getStation().doubleValue());
@@ -159,7 +159,7 @@
         double kmLo = access.getLowerKM();
         double kmHi = access.getUpperKM();
 
-        logger.debug("Prepare data for km range: " + kmLo + " - " + kmHi);
+        log.debug("Prepare data for km range: " + kmLo + " - " + kmHi);
 
         FlowVelocityData[] data = new FlowVelocityData[models.size()];
         for (int i = 0, n = models.size(); i < n; i++) {
@@ -170,7 +170,7 @@
             data[i] = d;
         }
 
-        logger.debug("Calculation contains " + data.length + " data items.");
+        log.debug("Calculation contains " + data.length + " data items.");
 
         return new CalculationResult(data, this);
     }