--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/states/extreme/ExtremeQInput.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,245 @@
+package org.dive4elements.river.artifacts.states.extreme;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Element;
+
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+
+import org.dive4elements.river.artifacts.access.ExtremeAccess;
+
+import org.dive4elements.artifactdatabase.ProtocolUtils;
+import org.dive4elements.artifactdatabase.data.StateData;
+
+import org.dive4elements.artifacts.common.utils.XMLUtils;
+
+import org.dive4elements.river.artifacts.model.RiverFactory;
+import org.dive4elements.river.artifacts.model.WstValueTable;
+/*
+import org.dive4elements.river.model.Gauge;
+import org.dive4elements.river.model.Wst;
+import org.dive4elements.river.utils.FLYSUtils;
+*/
+import org.dive4elements.river.artifacts.model.Range;
+import org.dive4elements.river.model.River;
+
+import org.dive4elements.river.artifacts.FLYSArtifact;
+
+import org.dive4elements.river.artifacts.model.RangeWithValues;
+import org.dive4elements.river.artifacts.states.DefaultState;
+import org.dive4elements.river.artifacts.model.WstValueTableFactory;
+
+
+/** TODO Subclass WQAdapted. */
+
+/**
+ * State to input Q data in segments for extreme value calculations..
+ * The data item ranges is expected to have this format <from1>;<to1>;<value1>:<from2>;<to2>;<value2>:...
+ * (;;;:;;;:;;;:...)
+ */
+public class ExtremeQInput extends DefaultState {
+
+    /** The logger used in this state.*/
+    private static Logger logger = Logger.getLogger(ExtremeQInput.class);
+
+
+    /** Trivial, empty constructor. */
+    public ExtremeQInput() {
+    }
+
+
+    /**
+     * Create one element for each 'segment' of the selected river that
+     * is within the given kilometer range (TODO). Each element is a tuple of
+     * (from;to) where <i>from</i> is the lower bounds of the segment or the
+     * lower kilometer range. <i>to</i> is the upper bounds of the segment or
+     * the upper kilometer range.
+     *
+     * @param cr The ElementCreator.
+     * @param artifact The FLYS artifact.
+     * @param name The name of the data item.
+     * @param context The CallContext.
+     *
+     * @return a list of elements that consist of tuples of the intersected
+     *         segments of the selected river.
+     */
+    @Override
+    protected Element[] createItems(
+        XMLUtils.ElementCreator cr,
+        Artifact    artifact,
+        String      name,
+        CallContext context)
+    {
+        logger.debug("ExtremeQInput.createItems: " + name);
+
+        FLYSArtifact flysArtifact = (FLYSArtifact) artifact;
+
+        ExtremeAccess access = new ExtremeAccess(flysArtifact, context);
+        River river = RiverFactory.getRiver(access.getRiver());
+        WstValueTable wstValueTable = WstValueTableFactory.getTable(river);
+
+        List<Range> ranges   = wstValueTable.findSegments(access.getFrom(),
+            access.getTo());
+
+        int num = ranges != null ? ranges.size() : 0;
+
+        if (num == 0) {
+            logger.warn("Selected distance matches no segments.");
+            return null;
+        }
+
+        List<Element> elements = new ArrayList<Element>();
+
+        for (Range range: ranges) {
+            elements.add(createItem(
+                cr, new String[] { range.getStart() + ";" + range.getEnd(), ""}, new double[] {0,100000}));
+        }
+
+        Element[] els = new Element[elements.size()];
+
+        return elements.toArray(els);
+    }
+
+
+    /** Create sub-item ('row') of data thing. */
+    protected Element createItem(
+        XMLUtils.ElementCreator cr,
+        Object   obj,
+        double[] q
+        )
+    {
+        Element item  = ProtocolUtils.createArtNode(cr, "item", null, null);
+        Element label = ProtocolUtils.createArtNode(cr, "label", null, null);
+        Element value = ProtocolUtils.createArtNode(cr, "value", null, null);
+
+        String[] arr = (String[]) obj;
+
+        label.setTextContent(arr[0]);
+        value.setTextContent(arr[1]);
+
+        item.appendChild(label);
+        item.appendChild(value);
+
+        if (q != null) {
+            Element qRange = createRangeElement(cr, q, "Q");
+            item.appendChild(qRange);
+        }
+
+        return item;
+    }
+
+
+    /**
+     * Create elements to set min and max values of segments q (just min makes
+     * sense for extremes.
+     */
+    protected Element createRangeElement(
+        XMLUtils.ElementCreator cr,
+        double[] mm,
+        String   type)
+    {
+        Element range = ProtocolUtils.createArtNode(
+            cr, "range",
+            new String[] {"type"},
+            new String[] {type});
+
+        Element min = ProtocolUtils.createArtNode(cr, "min", null, null);
+        min.setTextContent(String.valueOf(mm[0]));
+
+        Element max = ProtocolUtils.createArtNode(cr, "max", null, null);
+        max.setTextContent(String.valueOf(mm[1]));
+
+        range.appendChild(min);
+        range.appendChild(max);
+
+        return range;
+    }
+
+
+    @Override
+    protected String getUIProvider() {
+        return "q_segmented_panel";
+    }
+
+
+    /** Validate given data (return true). */
+    @Override
+    public boolean validate(Artifact artifact)
+    throws IllegalArgumentException
+    {
+        logger.debug("ExtremeQInput.validate");
+
+        FLYSArtifact flys = (FLYSArtifact) artifact;
+        logger.debug("ExtremeQInput: " + getData(flys, "ranges"));
+
+        /*
+        // TODO sort out what has to be validated (prevent negative values?).
+        RangeWithValues[] rwvs = extractInput(getData(flys, "ranges"));
+
+        if (rwvs == null) {
+            throw new IllegalArgumentException("error_missing_wq_data");
+        }
+
+        List<Gauge> gauges = FLYSUtils.getGauges(flys);
+        River        river = FLYSUtils.getRiver(flys);
+        Wst            wst = WstFactory.getWst(river);
+
+        for (Gauge gauge: gauges) {
+            Range range  = gauge.getRange();
+            double lower = range.getA().doubleValue();
+            double upper = range.getB().doubleValue();
+
+            for (RangeWithValues rwv: rwvs) {
+                if (lower <= rwv.getStart() && upper >= rwv.getEnd()) {
+                    compareQsWithGauge(wst, gauge, rwv.getValues());
+                }
+            }
+        }
+        */
+
+        return true;
+    }
+
+
+    /** Form RangeWithValue-Array from state data. */
+    protected RangeWithValues[] extractInput(StateData data) {
+        if (data == null) {
+            return null;
+        }
+
+        String dataString = (String) data.getValue();
+        String[]   ranges = dataString.split(":");
+
+        List<RangeWithValues> rwv = new ArrayList<RangeWithValues>();
+
+        for (String range: ranges) {
+            String[] parts = range.split(";");
+
+            double lower = Double.parseDouble(parts[0]);
+            double upper = Double.parseDouble(parts[1]);
+
+            String[] values = parts[2].split(",");
+
+            int      num = values.length;
+            double[] res = new double[num];
+
+            for (int i = 0; i < num; i++) {
+                try {
+                    res[i] = Double.parseDouble(values[i]);
+                }
+                catch (NumberFormatException nfe) {
+                    logger.warn(nfe, nfe);
+                }
+            }
+
+            rwv.add(new RangeWithValues(lower, upper, res));
+        }
+
+        return rwv.toArray(new RangeWithValues[rwv.size()]);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :