ingo@348: package de.intevation.flys.exports;
ingo@348: 
ingo@348: import java.io.IOException;
ingo@348: import java.io.OutputStream;
ingo@348: 
ingo@348: import org.apache.log4j.Logger;
ingo@348: 
ingo@348: import org.w3c.dom.Document;
ingo@348: 
ingo@348: import de.intevation.artifacts.Artifact;
ingo@412: import de.intevation.artifacts.CallContext;
ingo@412: 
ingo@412: import de.intevation.flys.model.River;
ingo@412: 
ingo@412: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@408: import de.intevation.flys.artifacts.resources.Resources;
ingo@348: 
ingo@348: 
ingo@348: /**
ingo@348:  * The base class for chart creation. It should provide some basic things that
ingo@348:  * equal in all chart types.
ingo@348:  *
ingo@348:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@348:  */
ingo@348: public abstract class ChartGenerator implements OutGenerator {
ingo@348: 
ingo@348:     private static Logger logger = Logger.getLogger(ChartGenerator.class);
ingo@348: 
ingo@348: 
ingo@348:     /** The document of the incoming out() request.*/
ingo@348:     protected Document request;
ingo@348: 
ingo@348:     /** The output stream where the data should be written to.*/
ingo@348:     protected OutputStream out;
ingo@348: 
ingo@348:     /** The CallContext object.*/
ingo@348:     protected CallContext context;
ingo@348: 
ingo@412:     /** The artifact that is used to decorate the chart with meta information.*/
ingo@412:     protected Artifact master;
ingo@412: 
ingo@348: 
ingo@348:     public void init(Document request, OutputStream out, CallContext context) {
ingo@348:         logger.debug("ChartGenerator.init");
ingo@348: 
ingo@348:         this.request = request;
ingo@348:         this.out     = out;
ingo@348:         this.context = context;
ingo@348:     }
ingo@348: 
ingo@348: 
ingo@412:     public void setMasterArtifact(Artifact master) {
ingo@412:         this.master = master;
ingo@412:     }
ingo@412: 
ingo@412: 
ingo@408:     protected String msg(String key, String def) {
ingo@408:         return Resources.getMsg(context.getMeta(), key, def);
ingo@408:     }
ingo@408: 
ingo@408: 
ingo@412:     protected String msg(String key, String def, Object[] args) {
ingo@412:         return Resources.getMsg(context.getMeta(), key, def, args);
ingo@412:     }
ingo@412: 
ingo@412: 
ingo@412:     protected String getRiverName() {
ingo@412:         FLYSArtifact flys = (FLYSArtifact) master;
ingo@412: 
ingo@412:         River river = flys.getRiver();
ingo@412:         return river != null ? river.getName() : "";
ingo@412:     }
ingo@412: 
ingo@412: 
ingo@412:     protected double[] getRange() {
ingo@412:         FLYSArtifact flys = (FLYSArtifact) master;
ingo@412: 
ingo@412:         return flys.getDistance();
ingo@412:     }
ingo@412: 
ingo@412: 
ingo@364:     public abstract void doOut(Artifact artifact, String facet, Document attr);
ingo@348: 
ingo@348:     public abstract void generate() throws IOException;
ingo@348: }
ingo@348: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :