# HG changeset patch
# User Felix Wolfsteller <felix.wolfsteller@intevation.de>
# Date 1368714306 -7200
# Node ID a0dd303f4a08f94f09175e06da37f89cd01067b3
# Parent  7dd2f5435426673b5a9401094598f806f3b112c9
MainValuesArtifact: prepare to be created by crafted document.

diff -r 7dd2f5435426 -r a0dd303f4a08 artifacts/src/main/java/org/dive4elements/river/artifacts/MainValuesArtifact.java
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/MainValuesArtifact.java	Thu May 16 16:20:18 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/MainValuesArtifact.java	Thu May 16 16:25:06 2013 +0200
@@ -25,6 +25,9 @@
 import org.dive4elements.artifacts.ArtifactFactory;
 import org.dive4elements.artifacts.CallMeta;
 
+import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
+import org.dive4elements.artifacts.common.utils.XMLUtils;
+
 import org.dive4elements.river.model.Gauge;
 import org.dive4elements.river.model.MainValue;
 import org.dive4elements.river.model.River;
@@ -106,6 +109,8 @@
         logger.debug("MainValuesArtifact.setup");
         state = new StaticState(STATIC_STATE_NAME);
 
+        initFromGaugeDoc(data, callMeta);
+
         List<Facet> fs = new ArrayList<Facet>();
         addFacets(state.getID(), fs);
         spawnState();
@@ -176,6 +181,41 @@
         }
     }
 
+    /**
+     * The MainValueArtifact can be set up with a document giving the
+     * river and gauge.  This happens in context of GaugeDischargeArtifact.
+     * In that case, initalize() is not called.
+     */
+    private void initFromGaugeDoc(Document data, CallMeta callMeta) {
+        String gaugeref = XMLUtils.xpathString(
+                data, GaugeDischargeCurveArtifact.XPATH_GAUGE,
+                ArtifactNamespaceContext.INSTANCE);
+        String rivername = XMLUtils.xpathString(
+                data, GaugeDischargeCurveArtifact.XPATH_RIVER,
+                ArtifactNamespaceContext.INSTANCE);
+
+        if (rivername == null || gaugeref == null || rivername.equals("")
+            || gaugeref.equals("")) {
+            logger.debug("Not setting MainValuesArtifact up from gauge doc.");
+            return;
+        }
+
+        addData("river", new DefaultStateData("river",
+                    Resources.getMsg(callMeta,
+                        "facet.gauge_discharge_curve.river",
+                        "Name of the river"),
+                    "String", rivername));
+
+        try {
+            Long officialNumber = Long.valueOf(gaugeref);
+            Gauge gauge = Gauge.getGaugeByOfficialNumber(officialNumber);
+            addData("ld_locations", new DefaultStateData("ld_locations", null, null,
+                    String.valueOf(gauge.getStation())));
+        } catch (NumberFormatException nfe) {
+            logger.debug("MainValuesArtifact could not parse gaugeref from doc.");
+        }
+    }
+
 
     /**
      * Create "the" state.