Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/LocationDistanceSelect.java @ 4902:e1566938d04c
Added new functions to datacage templating language.
* get minimum of location/distance:
dc:fromValue($ld_mode, $ld_locations, $ld_from)
- returns -Double.MAX_VALUE if no min exists.
* get maximum of location/distance:
dc:toValue($ld_mode, $ld_locations, $ld_to)
- returns Double.MAX_VALUE if no max exists.
author | Raimund Renkert <rrenkert@intevation.de> |
---|---|
date | Tue, 29 Jan 2013 17:11:26 +0100 |
parents | eb5564662e19 |
children |
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package de.intevation.flys.artifacts.states; import org.apache.log4j.Logger; import gnu.trove.TDoubleArrayList; import de.intevation.artifacts.Artifact; import de.intevation.artifactdatabase.data.StateData; import de.intevation.flys.artifacts.FLYSArtifact; import de.intevation.flys.artifacts.WINFOArtifact; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class LocationDistanceSelect extends ComputationRangeState { /** The logger used in this class. */ private static Logger logger = Logger.getLogger(LocationDistanceSelect.class); /** The name of the 'mode' field. */ public static final String MODE = "ld_mode"; /** The name of the 'locations' field. */ public static final String LOCATIONS = "ld_locations"; /** * The default constructor that initializes an empty State object. */ public LocationDistanceSelect() { } @Override protected String getUIProvider() { return "location_distance_panel"; } /** Validates the range (or location). */ @Override public boolean validate(Artifact artifact) throws IllegalArgumentException { logger.debug("LocationDistanceSelect.validate"); FLYSArtifact flys = (FLYSArtifact)artifact; StateData mode = getData(flys, MODE); String mValue = mode != null ? (String)mode.getValue() : null; if (mValue != null) { if (mValue.equals("distance")) { return super.validate(flys); } else { return validateLocations(flys); } } return false; } /** Validate selected locations. */ protected boolean validateLocations(FLYSArtifact flys) throws IllegalArgumentException { StateData dValues = getData(flys, LOCATIONS); String values = dValues != null ? (String)dValues.getValue() : null; if (values == null || values.length() == 0) { throw new IllegalArgumentException("error_empty_state"); } double[] absMinMax = getMinMax(flys); double[] relMinMax = getMinMaxFromString(values); if (relMinMax[0] < absMinMax[0] || relMinMax[0] > absMinMax[1]) { throw new IllegalArgumentException("error_feed_from_out_of_range"); } if (relMinMax[1] > absMinMax[1] || relMinMax[1] < absMinMax[0]) { throw new IllegalArgumentException("error_feed_to_out_of_range"); } return true; } /** * Extracts the min/max values from String <i>s</i>. An * IllegalArgumentException is thrown if there is a value that throws a * NumberFormatException. * * @param s String that contains whitespace separated double values. * * @return a 2dmin array [min,max]. */ public static double[] getMinMaxFromString(String s) throws IllegalArgumentException { String[] values = s.split(" "); double[] minmax = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; for (String v: values) { try { double value = Double.valueOf(v); minmax[0] = minmax[0] < value ? minmax[0] : value; minmax[1] = minmax[1] > value ? minmax[1] : value; } catch (NumberFormatException nfe) { throw new IllegalArgumentException( "error_invalid_double_value"); } } return minmax; } public static double[] getLocations(WINFOArtifact flys) { StateData data = flys.getData(LOCATIONS); String value = data != null ? (String) data.getValue() : null; if (value == null || value.length() == 0) { logger.warn("No location data given."); return null; } String[] splitted = value.split(" "); TDoubleArrayList values = new TDoubleArrayList(); for (String split: splitted) { try { values.add(Double.valueOf(split)); } catch (NumberFormatException nfe) { logger.warn(nfe, nfe); } } return values.toNativeArray(); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :