--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/common/SInfoResultType.java	Wed Mar 14 14:10:32 2018 +0100
@@ -0,0 +1,339 @@
+/** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+package org.dive4elements.river.artifacts.sinfo.common;
+
+import java.text.NumberFormat;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+
+import org.apache.commons.lang.StringUtils;
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.artifacts.CallMeta;
+import org.dive4elements.river.artifacts.resources.Resources;
+import org.dive4elements.river.artifacts.sinfo.SInfoI18NStrings;
+import org.dive4elements.river.artifacts.sinfo.tkhcalculation.SoilKind;
+import org.dive4elements.river.utils.Formatter;
+import org.dive4elements.river.utils.RiverUtils;
+
+/**
+ * Result type for data that goes into {@link SInfoResultRow}s.
+ *
+ * @author Gernot Belger
+ */
+public enum SInfoResultType {
+
+    station(SInfoI18NStrings.UNIT_KM, SInfoI18NStrings.CSV_KM_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getWaterlevelKM(context);
+        }
+    },
+
+    waterlevel(null, SInfoI18NStrings.CSV_WATERLEVEL_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            // REMARK: other modules use Formatter.getWaterlevelW(context) instead, but that format with a variable number of
+            // digits.
+            return Formatter.getFlowDepth(context);
+        }
+    },
+
+    waterlevelLabel(SInfoI18NStrings.UNIT_NONE, SInfoI18NStrings.CSV_LABEL_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            return exportStringValue(value);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+
+    discharge(SInfoI18NStrings.UNIT_CUBIC_M, SInfoI18NStrings.CSV_DISCHARGE_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            final double roundedDischarge = RiverUtils.roundQ(doubleValue);
+            return exportDoubleValue(context, roundedDischarge);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getWaterlevelQ(context);
+        }
+    },
+
+    meanBedHeight(null, SInfoI18NStrings.CSV_MEAN_BED_HEIGHT_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getMeanBedHeight(context);
+        }
+    },
+
+    soundingLabel(SInfoI18NStrings.UNIT_NONE, SInfoI18NStrings.CSV_SOUNDING_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            return exportStringValue(value);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+
+    flowdepthmin(SInfoI18NStrings.UNIT_M, SInfoI18NStrings.CSV_FLOWDEPTH_MIN_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getFlowDepth(context);
+        }
+    },
+
+    flowdepthmax(SInfoI18NStrings.UNIT_M, SInfoI18NStrings.CSV_FLOWDEPTH_MAX_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getFlowDepth(context);
+        }
+    },
+
+    gaugeLabel(SInfoI18NStrings.UNIT_NONE, SInfoI18NStrings.CSV_GAUGE_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            return exportStringValue(value);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+
+    location(SInfoI18NStrings.UNIT_NONE, SInfoI18NStrings.CSV_LOCATION_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            return exportStringValue(value);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    soilkind(SInfoI18NStrings.UNIT_NONE, SInfoI18NStrings.CSV_TKHKIND_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+
+            if (value == null)
+                return StringUtils.EMPTY;
+
+            final SoilKind kind = (SoilKind) value;
+
+            final String key = SInfoI18NStrings.PREFIX_TKH_KIND + kind.name();
+            return Resources.getMsg(context.getMeta(), key, key);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    flowdepth(SInfoI18NStrings.UNIT_M, SInfoI18NStrings.CSV_FLOWDEPTH_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getFlowDepth(context);
+        }
+    },
+    d50(null, null) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    velocity(null, null) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    tau(null, null) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    tkh(SInfoI18NStrings.UNIT_CM, SInfoI18NStrings.CSV_TKH_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getTkh(context);
+        }
+    },
+    tkhup(SInfoI18NStrings.UNIT_CM, null) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    tkhdown(SInfoI18NStrings.UNIT_CM, null) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            throw new UnsupportedOperationException();
+        }
+    },
+    flowdepthtkh(SInfoI18NStrings.UNIT_M, SInfoI18NStrings.CSV_FLOWDEPTHTKH_HEADER) {
+        @Override
+        public String exportValue(final CallContext context, final Object value) {
+            final double doubleValue = asDouble(value);
+            return exportDoubleValue(context, doubleValue);
+        }
+
+        @Override
+        protected NumberFormat createFormatter(final CallContext context) {
+            return Formatter.getFlowDepth(context);
+        }
+    };
+
+    /* Cache for formatters because Formatter will always create new formats (which is very expensive) */
+    private final Map<Locale, NumberFormat> formatters = new HashMap<>();
+
+    private final String unit;
+
+    private final String csvHeader;
+
+    private SInfoResultType(final String untit, final String csvHeader) {
+        this.unit = untit;
+        this.csvHeader = csvHeader;
+    }
+
+    public abstract String exportValue(final CallContext context, final Object value);
+
+    protected final String exportStringValue(final Object value) {
+
+        if (value == null)
+            return StringUtils.EMPTY;
+
+        if (!(value instanceof String))
+            throw new IllegalStateException();
+
+        return (String) value;
+    }
+
+    protected final double asDouble(final Object value) {
+        if (value == null)
+            return Double.NaN;
+
+        if (!(value instanceof Number))
+            throw new IllegalStateException();
+
+        final Number number = (Number) value;
+        return number.doubleValue();
+    }
+
+    protected final String exportDoubleValue(final CallContext context, final double value) {
+        if (Double.isNaN(value))
+            return StringUtils.EMPTY;
+
+        final NumberFormat formatter = getFormatter(context);
+        return formatter.format(value);
+    }
+
+    private NumberFormat getFormatter(final CallContext context) {
+        final CallMeta meta = context.getMeta();
+        final Locale locale = Resources.getLocale(meta);
+
+        if (!this.formatters.containsKey(locale))
+            this.formatters.put(locale, createFormatter(context));
+
+        return this.formatters.get(locale);
+    }
+
+    protected abstract NumberFormat createFormatter(CallContext context);
+
+    public final String getCsvHeader() {
+        return this.csvHeader;
+    }
+
+    public final String getUnit() {
+        return this.unit;
+    }
+}
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