--- a/artifacts/src/main/java/org/dive4elements/river/exports/HistoricalDischargeCurveGenerator.java	Fri Sep 05 12:54:58 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/HistoricalDischargeCurveGenerator.java	Fri Sep 05 12:58:17 2014 +0200
@@ -44,7 +44,7 @@
 public class HistoricalDischargeCurveGenerator extends TimeseriesChartGenerator
     implements FacetTypes {
 
-    private static Logger logger = Logger
+    private static Logger log = Logger
         .getLogger(HistoricalDischargeCurveGenerator.class);
 
     public static final String I18N_CHART_TITLE = "chart.historical.discharge.title";
@@ -129,8 +129,8 @@
     public void doOut(ArtifactAndFacet artifactFacet, ThemeDocument theme,
         boolean visible) {
         String name = artifactFacet.getFacetName();
-        logger.debug("HistoricalDischargeCurveGenerator.doOut: " + name);
-        logger.debug("Theme description is: "
+        log.debug("HistoricalDischargeCurveGenerator.doOut: " + name);
+        log.debug("Theme description is: "
             + artifactFacet.getFacetDescription());
 
         if (name.equals(HISTORICAL_DISCHARGE_Q)) {
@@ -168,14 +168,14 @@
                 visible, axis);
         }
         else {
-            logger.warn("doOut(): unknown facet name: " + name);
+            log.warn("doOut(): unknown facet name: " + name);
             return;
         }
     }
 
     protected void doHistoricalDischargeOutQ(D4EArtifact artifact,
         Object data, String desc, ThemeDocument theme, boolean visible) {
-        logger.debug("doHistoricalDischargeOut(): description = " + desc);
+        log.debug("doHistoricalDischargeOut(): description = " + desc);
 
         WQTimerange wqt = (WQTimerange) data;
 
@@ -187,7 +187,7 @@
 
     protected void doHistoricalDischargeOutW(D4EArtifact artifact,
         Object data, String desc, ThemeDocument theme, boolean visible) {
-        logger.debug("doHistoricalDischargeOut(): description = " + desc);
+        log.debug("doHistoricalDischargeOut(): description = " + desc);
 
         WQTimerange wqt = (WQTimerange) data;
 
@@ -199,7 +199,7 @@
 
     protected void doHistoricalDischargeDifferenceOutQ(D4EArtifact artifact,
         Object data, String desc, ThemeDocument theme, boolean visible) {
-        logger.debug("doHistoricalDischargeDifferenceOut: desc = " + desc);
+        log.debug("doHistoricalDischargeDifferenceOut: desc = " + desc);
 
         HistoricalWQTimerange wqt = (HistoricalWQTimerange) data;
 
@@ -211,7 +211,7 @@
 
     protected void doHistoricalDischargeDifferenceOutW(D4EArtifact artifact,
         Object data, String desc, ThemeDocument theme, boolean visible) {
-        logger.debug("doHistoricalDischargeDifferenceOut: desc = " + desc);
+        log.debug("doHistoricalDischargeDifferenceOut: desc = " + desc);
 
         HistoricalWQTimerange wqt = (HistoricalWQTimerange) data;
 
@@ -229,7 +229,7 @@
      */
     protected TimeSeriesCollection newTimeSeriesCollection(
         Timerange[] timeranges, double[] values, ThemeDocument theme, String desc) {
-        logger.debug("Create new TimeSeriesCollection for: " + desc);
+        log.debug("Create new TimeSeriesCollection for: " + desc);
 
         TimeSeriesCollection tsc = new TimeSeriesCollection();
         TimeSeries series = new StyledTimeSeries(desc, theme);
@@ -239,21 +239,21 @@
 
             try {
                 if (Double.isNaN(values[i])) {
-                    logger.warn("Skip TimePeriod because value is NaN.");
+                    log.warn("Skip TimePeriod because value is NaN.");
                     continue;
                 }
 
                 series.add(rtp[0], values[i]);
                 series.add(rtp[1], values[i]);
 
-                if (logger.isDebugEnabled()) {
-                    logger.debug("added Item to TimeSeries:");
-                    logger.debug("   TimePeriod: " + rtp[0] + " - " + rtp[1]);
-                    logger.debug("   Value:      " + values[i]);
+                if (log.isDebugEnabled()) {
+                    log.debug("added Item to TimeSeries:");
+                    log.debug("   TimePeriod: " + rtp[0] + " - " + rtp[1]);
+                    log.debug("   Value:      " + values[i]);
                 }
             }
             catch (SeriesException se) {
-                logger.warn("Error while adding TimePeriod: " + se);
+                log.warn("Error while adding TimePeriod: " + se);
             }
         }