ingo@942: package de.intevation.flys.artifacts.states;
ingo@942: 
ingo@942: import java.util.List;
ingo@958: import java.util.Map;
ingo@942: 
ingo@1052: import com.vividsolutions.jts.geom.Geometry;
ingo@1052: 
ingo@942: import org.apache.log4j.Logger;
ingo@942: 
ingo@958: import de.intevation.artifacts.CallContext;
ingo@942: import de.intevation.artifacts.CallMeta;
ingo@942: 
ingo@1052: import de.intevation.artifacts.common.utils.Config;
ingo@1052: 
ingo@942: import de.intevation.artifactdatabase.state.Facet;
ingo@942: 
ingo@1052: import de.intevation.flys.model.RiverAxis;
ingo@1052: 
ingo@942: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@958: import de.intevation.flys.artifacts.context.FLYSContext;
ingo@942: import de.intevation.flys.artifacts.model.WMSLayerFacet;
ingo@954: import de.intevation.flys.artifacts.resources.Resources;
ingo@942: import de.intevation.flys.artifacts.states.DefaultState.ComputeType;
ingo@1052: import de.intevation.flys.utils.GeometryUtils;
ingo@942: 
ingo@942: 
ingo@942: public class RiverAxisState extends OutputState {
ingo@942: 
ingo@954:     public static final String I18N_DESCRIPTION = "floodmap.riveraxis";
ingo@954: 
ingo@958:     public static final String WMS_LAYER_NAME = "riveraxis";
ingo@958: 
ingo@1052:     public static final String XPATH_RIVER_PROJECTION =
ingo@1058:         "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value";
ingo@1052: 
ingo@954: 
ingo@942:     private static final Logger logger = Logger.getLogger(RiverAxisState.class);
ingo@942: 
ingo@958: 
ingo@942:     @Override
ingo@942:     public Object computeInit(
ingo@942:         FLYSArtifact artifact,
ingo@942:         String       hash,
ingo@958:         Object       context,
ingo@942:         CallMeta     meta,
ingo@942:         List<Facet>  facets
ingo@942:     ) {
ingo@942:         logger.debug("RiverAxisState.computeInit()");
ingo@942: 
ingo@958:         FLYSContext flysContext = null;
ingo@958: 
ingo@958:         if (context instanceof FLYSContext) {
ingo@958:             flysContext = (FLYSContext) context;
ingo@958:         }
ingo@958:         else {
ingo@958:             flysContext = (FLYSContext) ((CallContext) context).globalContext();
ingo@958:         }
ingo@958: 
ingo@958:         Map<String, String> wms = (Map<String, String>)
ingo@958:             flysContext.get(FLYSContext.RIVER_WMS);
ingo@958: 
ingo@958:         String river = artifact.getDataAsString("river");
ingo@958: 
ingo@958:         if(river == null || river.length() == 0) {
ingo@958:             logger.warn("No river found in the current parameterization.");
ingo@958:             return null;
ingo@958:         }
ingo@958: 
ingo@958:         String url = wms.get(river);
ingo@958: 
ingo@954:         // TODO Add config for background layer
ingo@942:         WMSLayerFacet facet = new WMSLayerFacet(
ingo@942:             0,
ingo@942:             FLOODMAP_RIVERAXIS,
ingo@954:             Resources.getMsg(meta, I18N_DESCRIPTION, I18N_DESCRIPTION),
ingo@942:             ComputeType.INIT,
ingo@942:             getID(), hash,
ingo@958:             url);
ingo@942: 
ingo@958:         facet.addLayer(WMS_LAYER_NAME);
ingo@942: 
ingo@1052:         RiverAxis axis = RiverAxis.getRiverAxis(river);
ingo@1052:         if (axis != null) {
ingo@1052:             // TODO Take the correct EPSG into account. Maybe, we need to
ingo@1052:             // reproject the geometry.
ingo@1052:             Geometry geom   = axis.getGeom().getBoundary();
ingo@1052:             String   bounds = GeometryUtils.jtsBoundsToOLBounds(geom);
ingo@1052: 
ingo@1052:             logger.debug("River '" + river + "' bounds: " + bounds);
ingo@1052: 
ingo@1052:             facet.setExtent(bounds);
ingo@1052:         }
ingo@1052: 
ingo@1052:         String xpath = XPATH_RIVER_PROJECTION.replace("%RIVER%", river);
ingo@1052:         String srid  = Config.getStringXPath(xpath);
ingo@1052:         facet.setSrid(srid);
ingo@954: 
ingo@942:         facets.add(facet);
ingo@942: 
ingo@942:         return null;
ingo@942:     }
ingo@942: }
ingo@942: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :