# HG changeset patch
# User Sascha L. Teichmann <sascha.teichmann@intevation.de>
# Date 1306947704 0
# Node ID 6695e03e9b829705da6704f896011e2172a84f64
# Parent  44175d4720f87f4410aa1a4a7c622ccf6d594fa7
Added parser for segments

flys-artifacts/trunk@2043 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r 44175d4720f8 -r 6695e03e9b82 flys-artifacts/ChangeLog
--- a/flys-artifacts/ChangeLog	Wed Jun 01 09:57:22 2011 +0000
+++ b/flys-artifacts/ChangeLog	Wed Jun 01 17:01:44 2011 +0000
@@ -1,3 +1,11 @@
+2011-06-01	Sascha L. Teichmann	<sascha.teichmann@intevation.de>
+
+	* src/main/java/de/intevation/flys/artifacts/model/Segment.java:
+	  New. Parse segments only once.
+
+	* src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java:
+	  Expose new parser to artifacts. TODO: Use it.
+
 2011-06-01	Sascha L. Teichmann	<sascha.teichmann@intevation.de>
 
 	* src/main/java/de/intevation/flys/artifacts/model/WstValueTable.java:
diff -r 44175d4720f8 -r 6695e03e9b82 flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java
--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Wed Jun 01 09:57:22 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Wed Jun 01 17:01:44 2011 +0000
@@ -2,6 +2,7 @@
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -37,8 +38,11 @@
 import de.intevation.flys.model.River;
 
 import de.intevation.flys.artifacts.context.FLYSContext;
+
 import de.intevation.flys.artifacts.model.DischargeTables;
 import de.intevation.flys.artifacts.model.RiverFactory;
+import de.intevation.flys.artifacts.model.Segment;
+
 import de.intevation.flys.artifacts.states.DefaultState;
 import de.intevation.flys.artifacts.states.LocationDistanceSelect;
 
@@ -746,6 +750,20 @@
         }
     }
 
+    public List<Segment> getSegments() {
+        StateData wqValues = getData("wq_values");
+        if (wqValues == null) {
+            logger.warn("no wq_values given");
+            return Collections.emptyList();
+        }
+        String input = (String)wqValues.getValue();
+        if (input == null || (input = input.trim()).length() == 0) {
+            logger.warn("wq_values are empty");
+            return Collections.emptyList();
+        }
+        return Segment.parseSegments(input);
+    }
+
 
     /**
      * Returns the Qs for a number of Ws. This method makes use of
diff -r 44175d4720f8 -r 6695e03e9b82 flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/Segment.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/Segment.java	Wed Jun 01 17:01:44 2011 +0000
@@ -0,0 +1,79 @@
+package de.intevation.flys.artifacts.model;
+
+import java.util.List;
+import java.util.ArrayList;
+
+import java.io.Serializable;
+
+import org.apache.log4j.Logger;
+
+import gnu.trove.TDoubleArrayList;
+
+public class Segment
+implements   Serializable
+{
+    private static Logger logger = Logger.getLogger(Segment.class);
+
+    protected double    from;
+    protected double    to;
+    protected double [] values;
+
+    public Segment() {
+    }
+
+    public Segment(double from, double to, double [] values) {
+        this.from   = from;
+        this.to     = to;
+        this.values = values;
+    }
+
+    public boolean isUp() {
+        return from < to;
+    }
+
+    public String toString() {
+        StringBuilder sb = new StringBuilder("Segment: [");
+        sb.append("from: ").append(from).append("; to: ")
+          .append(to).append("; values: (");
+        for (int i = 0; i < values.length; ++i) {
+            if (i > 0) sb.append(", ");
+            sb.append(values[i]);
+        }
+        sb.append(")]");
+        return sb.toString();
+    }
+
+    public static List<Segment> parseSegments(String input) {
+
+        ArrayList<Segment> segments = new ArrayList<Segment>();
+
+        TDoubleArrayList vs = new TDoubleArrayList();
+
+        for (String segmentStr: input.split(":")) {
+            String [] parts = segmentStr.split(";");
+            if (parts.length < 3) {
+                logger.warn("invalid segment: '" + segmentStr + "'");
+                continue;
+            }
+            try {
+                double from = Double.parseDouble(parts[0].trim());
+                double to   = Double.parseDouble(parts[1].trim());
+
+                vs.clear();
+
+                for (String valueStr: parts[2].split(",")) {
+                    vs.add(Double.parseDouble(valueStr.trim()));
+                }
+
+                double [] values = vs.toNativeArray();
+                segments.add(new Segment(from, to, values));
+            }
+            catch (NumberFormatException nfe) {
+                logger.warn("invalid segment: '" + segmentStr + "'");
+            }
+        }
+
+        return segments;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :