ingo@105: package de.intevation.flys.artifacts;
ingo@105: 
ingo@109: import java.util.List;
ingo@134: import java.util.Vector;
ingo@109: 
ingo@105: import org.w3c.dom.Document;
ingo@110: import org.w3c.dom.Element;
ingo@124: import org.w3c.dom.Node;
ingo@105: 
ingo@105: import org.apache.log4j.Logger;
ingo@105: 
ingo@110: import de.intevation.artifacts.ArtifactNamespaceContext;
ingo@105: import de.intevation.artifacts.CallContext;
ingo@105: 
ingo@110: import de.intevation.artifactdatabase.ProtocolUtils;
ingo@144: import de.intevation.artifactdatabase.state.Output;
ingo@110: import de.intevation.artifactdatabase.state.State;
ingo@110: import de.intevation.artifactdatabase.state.StateEngine;
ingo@112: import de.intevation.artifactdatabase.transition.TransitionEngine;
ingo@110: 
ingo@109: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@109: 
ingo@362: import de.intevation.flys.model.River;
ingo@362: 
ingo@134: import de.intevation.flys.artifacts.states.DefaultState;
ingo@109: import de.intevation.flys.artifacts.context.FLYSContext;
ingo@362: import de.intevation.flys.artifacts.model.WQKms;
ingo@362: import de.intevation.flys.artifacts.model.WstValueTable;
ingo@105: 
ingo@105: 
ingo@105: /**
ingo@105:  * The default WINFO artifact.
ingo@105:  *
ingo@105:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@105:  */
ingo@119: public class WINFOArtifact extends FLYSArtifact {
ingo@105: 
ingo@105:     /** The logger for this class */
ingo@105:     private static Logger logger = Logger.getLogger(WINFOArtifact.class);
ingo@105: 
ingo@105: 
ingo@121:     /** The name of the artifact.*/
ingo@121:     public static final String ARTIFACT_NAME = "winfo";
ingo@121: 
ingo@124:     /** XPath */
ingo@124:     public static final String XPATH_STATIC_UI ="/art:result/art:ui/art:static";
ingo@124: 
ingo@121: 
ingo@105:     /**
ingo@105:      * The default constructor.
ingo@105:      */
ingo@105:     public WINFOArtifact() {
ingo@105:     }
ingo@105: 
ingo@105: 
ingo@105:     /**
ingo@105:      * This method returns a description of this artifact.
ingo@105:      *
ingo@105:      * @param data Some data.
ingo@128:      * @param context The CallContext.
ingo@105:      *
ingo@105:      * @return the description of this artifact.
ingo@105:      */
ingo@105:     public Document describe(Document data, CallContext context) {
ingo@119:         logger.debug("Describe: the current state is: " + getCurrentStateId());
ingo@105: 
ingo@112:         FLYSContext flysContext = null;
ingo@112:         if (context instanceof FLYSContext) {
ingo@112:             flysContext = (FLYSContext) context;
ingo@112:         }
ingo@112:         else {
ingo@112:             flysContext = (FLYSContext) context.globalContext();
ingo@112:         }
ingo@110: 
ingo@112:         StateEngine stateEngine = (StateEngine) flysContext.get(
ingo@112:             FLYSContext.STATE_ENGINE_KEY);
ingo@112: 
ingo@112:         TransitionEngine transitionEngine = (TransitionEngine) flysContext.get(
ingo@112:             FLYSContext.TRANSITION_ENGINE_KEY);
ingo@112: 
ingo@112:         List<State> reachable = transitionEngine.getReachableStates(
ingo@355:             this, getCurrentState(context), stateEngine);
ingo@112: 
ingo@112:         Document description            = XMLUtils.newDocument();
ingo@110:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@110:             description,
ingo@110:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@110:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
ingo@110: 
ingo@110:         Element root = ProtocolUtils.createRootNode(creator);
ingo@115:         description.appendChild(root);
ingo@115: 
ingo@119:         State current = getCurrentState(context);
ingo@119: 
ingo@110:         ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash());
ingo@119:         ProtocolUtils.appendState(creator, root, current);
ingo@112:         ProtocolUtils.appendReachableStates(creator, root, reachable);
ingo@110: 
ingo@303:         Element name = ProtocolUtils.createArtNode(
ingo@303:             creator, "name",
ingo@303:             new String[] { "value" },
ingo@303:             new String[] { getName() });
ingo@303: 
ingo@127:         Element ui = ProtocolUtils.createArtNode(
ingo@127:             creator, "ui", null, null);
ingo@110: 
ingo@127:         Element staticUI  = ProtocolUtils.createArtNode(
ingo@127:             creator, "static", null, null);
ingo@127: 
ingo@144:         Element outs = ProtocolUtils.createArtNode(
ingo@144:             creator, "outputmodes", null, null);
ingo@144:         appendOutputModes(description, outs, context, identifier());
ingo@144: 
ingo@134:         appendStaticUI(description, staticUI, context, identifier());
ingo@128: 
ingo@127:         Element dynamic = current.describe(
ingo@306:             this,
ingo@124:             description,
ingo@127:             root,
ingo@127:             context,
ingo@127:             identifier());
ingo@127: 
ingo@144:         if (dynamic != null) {
ingo@144:             ui.appendChild(dynamic);
ingo@144:         }
ingo@144: 
ingo@128:         ui.appendChild(staticUI);
ingo@144: 
ingo@303:         root.appendChild(name);
ingo@127:         root.appendChild(ui);
ingo@144:         root.appendChild(outs);
ingo@124: 
ingo@110:         return description;
ingo@105:     }
ingo@121: 
ingo@121: 
ingo@121:     /**
ingo@121:      * Returns the name of the concrete artifact.
ingo@121:      *
ingo@121:      * @return the name of the concrete artifact.
ingo@121:      */
ingo@121:     public String getName() {
ingo@121:         return ARTIFACT_NAME;
ingo@121:     }
ingo@124: 
ingo@124: 
ingo@144:     protected void appendOutputModes(
ingo@144:         Document    doc,
ingo@144:         Element     outs,
ingo@144:         CallContext context,
ingo@144:         String      uuid)
ingo@144:     {
ingo@144:         Vector<String> stateIds = getPreviousStateIds();
ingo@144: 
ingo@144:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@144:             doc,
ingo@144:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@144:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
ingo@144: 
ingo@144:         FLYSContext flysContext = getFlysContext(context);
ingo@144:         StateEngine engine      = (StateEngine) flysContext.get(
ingo@144:             FLYSContext.STATE_ENGINE_KEY);
ingo@144: 
ingo@144:         for (String stateId: stateIds) {
ingo@144:             logger.debug("Append output modes for state: " + stateId);
ingo@144:             State state = engine.getState(stateId);
ingo@144: 
ingo@144:             List<Output> list = state.getOutputs();
ingo@144:             if (list == null || list.size() == 0) {
ingo@144:                 continue;
ingo@144:             }
ingo@144: 
ingo@144:             ProtocolUtils.appendOutputModes(creator, outs, list);
ingo@144:         }
ingo@144: 
ingo@355:         try {
ingo@355:             DefaultState cur = (DefaultState) getCurrentState(context);
ingo@355:             if (cur.validate(this, context)) {
ingo@355:                 List<Output> list = cur.getOutputs();
ingo@355:                 if (list != null && list.size() > 0) {
ingo@355:                     logger.debug(
ingo@355:                         "Append output modes for state: " + cur.getID());
ingo@355: 
ingo@355:                     ProtocolUtils.appendOutputModes(creator, outs, list);
ingo@355:                 }
ingo@355:             }
ingo@355:         }
ingo@355:         catch (IllegalArgumentException iae) {
ingo@355:             // state is not valid, so we do not append its outputs.
ingo@355:         }
ingo@144:     }
ingo@144: 
ingo@144: 
ingo@124:     /**
ingo@124:      * This method appends the static data - that has already been inserted by
ingo@124:      * the user - to the static node of the DESCRIBE document.
ingo@124:      *
ingo@134:      * @param doc The document.
ingo@134:      * @param ui The root node.
ingo@134:      * @param context The CallContext.
ingo@134:      * @param uuid The identifier of the artifact.
ingo@124:      */
ingo@128:     protected void appendStaticUI(
ingo@134:         Document    doc,
ingo@134:         Node        ui,
ingo@134:         CallContext context,
ingo@134:         String uuid)
ingo@128:     {
ingo@134:         Vector<String> stateIds = getPreviousStateIds();
ingo@124: 
ingo@134:         FLYSContext flysContext = getFlysContext(context);
ingo@134:         StateEngine engine      = (StateEngine) flysContext.get(
ingo@134:             FLYSContext.STATE_ENGINE_KEY);
ingo@124: 
ingo@134:         for (String stateId: stateIds) {
ingo@134:             logger.debug("Append static data for state: " + stateId);
ingo@134:             DefaultState state = (DefaultState) engine.getState(stateId);
ingo@302:             state = (DefaultState) fillState(state);
ingo@302: 
ingo@134:             ui.appendChild(state.describeStatic(doc, ui, context, uuid));
ingo@134:         }
ingo@362:     }
ingo@124: 
ingo@362: 
ingo@362:     //
ingo@362:     // METHODS FOR RETRIEVING COMPUTED DATA FOR DIFFERENT CHART TYPES
ingo@362:     //
ingo@362: 
ingo@362:     /**
ingo@362:      * Returns the data that is computed by a waterlevel computation.
ingo@362:      *
ingo@362:      * @return an array of data triples that consist of W, Q and Kms.
ingo@362:      */
ingo@362:     public WQKms[] getWaterlevelData()
ingo@362:     throws NullPointerException
ingo@362:     {
ingo@362:         logger.debug("WINFOArtifact.getWaterlevelData");
ingo@362: 
ingo@362:         River river = getRiver();
ingo@362:         if (river == null) {
ingo@362:             throw new NullPointerException("No river selected.");
ingo@362:         }
ingo@362: 
ingo@362:         double[] kms = getKms();
ingo@362:         if (kms == null) {
ingo@362:             throw new NullPointerException("No Kms selected.");
ingo@362:         }
ingo@362: 
ingo@362:         double[] qs = getQs();
ingo@362:         if (qs == null) {
ingo@377:             logger.debug("Determine Q values based on a set of W values.");
ingo@377: 
ingo@377:             double[] ws = getWs();
ingo@377:             qs = getQsForWs(ws);
ingo@362:         }
ingo@362: 
ingo@362:         WstValueTable wst = WstValueTable.getTable(river);
ingo@362:         if (wst == null) {
ingo@362:             throw new NullPointerException("No Wst found for selected river.");
ingo@362:         }
ingo@362: 
ingo@362:         // TODO Introduce a caching mechanism here!
ingo@362: 
ingo@362:         return computeWaterlevelData(kms, qs, wst);
ingo@362:     }
ingo@362: 
ingo@362: 
ingo@362:     /**
ingo@362:      * Computes the data of a waterlevel computation based on the interpolation
ingo@362:      * in WstValueTable.
ingo@362:      *
ingo@362:      * @param kms The kilometer values.
ingo@362:      * @param qa The discharge values.
ingo@362:      * @param wst The WstValueTable used for the interpolation.
ingo@362:      *
ingo@362:      * @return an array of data triples that consist of W, Q and Kms.
ingo@362:      */
ingo@362:     public static WQKms[] computeWaterlevelData(
ingo@362:         double[]      kms,
ingo@362:         double[]      qs,
ingo@362:         WstValueTable wst)
ingo@362:     {
ingo@362:         logger.info("WINFOArtifact.computeWaterlevelData");
ingo@362: 
ingo@362:         WQKms[] wqkms = new WQKms[qs.length];
ingo@362:         for (int i = 0; i < wqkms.length; i++) {
sascha@380:             wqkms[i] = new WQKms(kms.length);
ingo@362:         }
ingo@362: 
sascha@380:         double [] interpolatedW = new double[qs.length];
sascha@380: 
ingo@362:         for (double km: kms) {
sascha@380:             wst.interpolateW(km, qs, interpolatedW);
ingo@362: 
ingo@362:             // TODO Modify the interpolation to return a better formed data
ingo@362:             // structure.
ingo@362:             for (int i = 0; i < interpolatedW.length; i++) {
ingo@362:                 wqkms[i].add(interpolatedW[i], qs[i], km);
ingo@362:             }
ingo@362:         }
ingo@362: 
ingo@362:         return wqkms;
ingo@124:     }
ingo@105: }
ingo@105: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :