ingo@1774: package de.intevation.flys.exports;
ingo@1774: 
ingo@1774: import java.io.IOException;
ingo@1774: import java.io.OutputStream;
ingo@1774: import java.util.ArrayList;
ingo@1774: import java.util.List;
ingo@1774: 
ingo@1774: import org.w3c.dom.Document;
ingo@1774: import org.w3c.dom.Element;
ingo@1774: 
ingo@1774: import org.apache.log4j.Logger;
ingo@1774: 
ingo@1774: import com.vividsolutions.jts.geom.Envelope;
ingo@1774: 
ingo@1774: import de.intevation.artifacts.Artifact;
ingo@1774: import de.intevation.artifacts.CallContext;
ingo@1774: 
ingo@1774: import de.intevation.artifacts.common.ArtifactNamespaceContext;
ingo@1774: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@1774: import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
ingo@1774: 
ingo@1774: import de.intevation.artifactdatabase.state.Facet;
ingo@1774: 
ingo@1774: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@1774: import de.intevation.flys.artifacts.model.FacetTypes;
ingo@1774: import de.intevation.flys.artifacts.model.WMSLayerFacet;
ingo@1774: import de.intevation.flys.utils.GeometryUtils;
ingo@1774: 
ingo@1774: 
ingo@1774: public class MapGenerator implements OutGenerator, FacetTypes {
ingo@1774: 
ingo@1774:     private static Logger logger = Logger.getLogger(MapGenerator.class);
ingo@1774: 
ingo@1774: 
ingo@1774:     protected Artifact master;
ingo@1774: 
ingo@1774:     protected Document request;
ingo@1774: 
ingo@1774:     protected OutputStream out;
ingo@1774: 
ingo@1774:     protected CallContext context;
ingo@1774: 
ingo@1774:     protected List<WMSLayerFacet> layers;
ingo@1774: 
ingo@1774:     protected Envelope maxExtent;
ingo@1774:     protected Envelope initialExtent;
ingo@1774: 
ingo@1774:     protected String srid;
ingo@1774: 
ingo@1774: 
ingo@1774: 
ingo@1774:     @Override
ingo@1774:     public void init(Document request, OutputStream out, CallContext context) {
ingo@1774:         logger.debug("MapGenerator.init");
ingo@1774: 
ingo@1774:         this.request  = request;
ingo@1774:         this.out      = out;
ingo@1774:         this.context  = context;
ingo@1774: 
ingo@1774:         this.layers = new ArrayList<WMSLayerFacet>();
ingo@1774: 
ingo@1774:         this.maxExtent = null;
ingo@1774:         this.initialExtent = null;
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     @Override
ingo@1774:     public void setMasterArtifact(Artifact master) {
ingo@1774:         logger.debug("MapGenerator.setMasterArtifact");
ingo@1774:         this.master = master;
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     @Override
ingo@1774:     public void doOut(
ingo@1774:         Artifact artifact,
ingo@1774:         Facet    facet,
ingo@1774:         Document attr,
ingo@1774:         boolean  visible)
ingo@1774:     {
ingo@1774:         String name = facet.getName();
ingo@1774: 
ingo@1774:         logger.debug("MapGenerator.doOut: " +artifact.identifier()+" | "+name);
ingo@1774:         FLYSArtifact flys = (FLYSArtifact) artifact;
ingo@1774: 
ingo@1774:         Facet nativeFacet = flys.getNativeFacet(facet);
ingo@1774: 
ingo@1774:         if (nativeFacet instanceof WMSLayerFacet) {
ingo@1774:             WMSLayerFacet wms = (WMSLayerFacet) nativeFacet;
ingo@1774:             Envelope   extent = wms.getExtent();
ingo@1774: 
ingo@1774:             layers.add(wms);
ingo@1774: 
ingo@1774:             setMaxExtent(extent);
ingo@1774:             setSrid(wms.getSrid());
ingo@1774: 
ingo@1774:             if (FLOODMAP_WSPLGEN.equals(name) && initialExtent == null) {
ingo@1774:                 setInitialExtent(extent);
ingo@1774:             }
ingo@1774:         }
ingo@1774:         else {
ingo@1774:             logger.warn("Facet not supported: " + nativeFacet.getClass());
ingo@1774:         }
ingo@1774: 
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     @Override
ingo@1774:     public void generate()
ingo@1774:     throws IOException
ingo@1774:     {
ingo@1774:         logger.debug("MapGenerator.generate");
ingo@1774: 
ingo@1774:         Document response = XMLUtils.newDocument();
ingo@1774:         ElementCreator c  = new ElementCreator(
ingo@1774:             response,
ingo@1774:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@1774:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
ingo@1774: 
ingo@1774:         Element root   = c.create("floodmap");
ingo@1774:         Element layers = c.create("layers");
ingo@1774: 
ingo@1774:         response.appendChild(root);
ingo@1774:         root.appendChild(layers);
ingo@1774: 
ingo@1774:         appendLayers(layers);
ingo@1774:         appendMapInformation(root, c);
ingo@1774: 
ingo@1774:         XMLUtils.toStream(response, out);
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     protected void appendLayers(Element parent) {
ingo@1774:         for (WMSLayerFacet facet: layers) {
ingo@1774:             parent.appendChild(facet.toXML(parent.getOwnerDocument()));
ingo@1774:         }
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     protected void setMaxExtent(Envelope maxExtent) {
ingo@1774:         if (maxExtent == null) {
ingo@1774:             return;
ingo@1774:         }
ingo@1774: 
ingo@1774:         if (this.maxExtent == null) {
ingo@1774:             logger.debug("Set max extent to: " + maxExtent);
ingo@1774:             this.maxExtent = maxExtent;
ingo@1774:             return;
ingo@1774:         }
ingo@1774: 
ingo@1774:         logger.debug("Expand max extent by: " + maxExtent);
ingo@1774:         logger.debug("Max extent before expanding: " + this.maxExtent);
ingo@1774:         this.maxExtent.expandToInclude(maxExtent);
ingo@1774:         logger.debug("Max extent after expanding: " + this.maxExtent);
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     protected void setInitialExtent(Envelope initialExtent) {
ingo@1774:         if (initialExtent == null) {
ingo@1774:             return;
ingo@1774:         }
ingo@1774: 
ingo@1774:         if (this.initialExtent == null) {
ingo@1774:             logger.debug("Set initial extent to: " + initialExtent);
ingo@1774:             this.initialExtent = initialExtent;
ingo@1774:             return;
ingo@1774:         }
ingo@1774: 
ingo@1774:         logger.debug("Set initial extent to: " + initialExtent);
ingo@1774:         this.initialExtent = initialExtent;
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     protected void setSrid(String srid) {
ingo@1774:         if (srid == null || srid.length() == 0) {
ingo@1774:             return;
ingo@1774:         }
ingo@1774: 
ingo@1774:         this.srid = srid;
ingo@1774:     }
ingo@1774: 
ingo@1774: 
ingo@1774:     protected void appendMapInformation(Element parent, ElementCreator c) {
ingo@1774:         String mE = GeometryUtils.jtsBoundsToOLBounds(this.maxExtent);
ingo@1774:         logger.debug("BUILD MAX EXTENT OF:" + this.maxExtent);
ingo@1774:         logger.debug("BUILD MAX EXTENT:" + mE);
ingo@1774: 
ingo@1774:         Element maxExtent = c.create("maxExtent");
ingo@1774:         maxExtent.setTextContent(mE);
ingo@1774: 
ingo@1774:         String iE = GeometryUtils.jtsBoundsToOLBounds(this.initialExtent);
ingo@1774:         logger.debug("BUILD INITIAL EXTENT OF: " + this.initialExtent);
ingo@1774:         logger.debug("BUILD INITIAL EXTENT: " + iE);
ingo@1774:         Element initExtent = c.create("initialExtent");
ingo@1774:         initExtent.setTextContent(iE);
ingo@1774: 
ingo@1774:         Element srid = c.create("srid");
ingo@1774:         srid.setTextContent(this.srid);
ingo@1774: 
ingo@1774:         // TODO zoom levels
ingo@1774:         // TODO resolutation
ingo@1774: 
ingo@1774:         parent.appendChild(maxExtent);
ingo@1774:         parent.appendChild(initExtent);
ingo@1774:         parent.appendChild(srid);
ingo@1774:     }
ingo@1774: }
ingo@1774: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :