ingo@346: package de.intevation.flys.collections;
ingo@346: 
ingo@346: import java.util.HashMap;
ingo@346: import java.util.Map;
ingo@346: 
ingo@346: import javax.xml.xpath.XPathConstants;
ingo@346: 
ingo@346: import org.apache.log4j.Logger;
ingo@346: 
ingo@346: import org.w3c.dom.Document;
ingo@694: import org.w3c.dom.Element;
ingo@346: import org.w3c.dom.Node;
ingo@346: import org.w3c.dom.NodeList;
ingo@346: 
ingo@346: import de.intevation.artifacts.ArtifactDatabase;
ingo@346: import de.intevation.artifacts.ArtifactDatabaseException;
ingo@346: import de.intevation.artifacts.ArtifactNamespaceContext;
ingo@346: import de.intevation.artifacts.CallMeta;
ingo@346: 
ingo@346: import de.intevation.artifactdatabase.state.DefaultOutput;
ingo@346: import de.intevation.artifactdatabase.state.Output;
ingo@346: 
ingo@346: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@346: 
ingo@346: import de.intevation.flys.artifacts.model.ManagedFacet;
ingo@346: 
ingo@346: 
ingo@346: public class OutputParser {
ingo@346: 
ingo@346:     /** Constant XPath that points to the outputmodes of an artifact.*/
ingo@346:     public static final String XPATH_ARTIFACT_OUTPUTMODES =
ingo@346:         "/art:result/art:outputmodes/art:output";
ingo@346: 
ingo@346: 
ingo@346:     private static Logger logger = Logger.getLogger(OutputParser.class);
ingo@346: 
ingo@346:     protected ArtifactDatabase db;
ingo@346:     protected CallMeta         meta;
ingo@346: 
ingo@346:     protected Map<String, Output> outs;
ingo@346: 
ingo@346: 
ingo@346:     public OutputParser(ArtifactDatabase db, CallMeta meta) {
ingo@346:         this.db   = db;
ingo@346:         this.meta = meta;
ingo@346:         this.outs = new HashMap<String, Output>();
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     public void parse(String uuid)
ingo@346:     throws ArtifactDatabaseException
ingo@346:     {
ingo@346:         logger.debug("OutputParser.parse: " + uuid);
ingo@346: 
ingo@346:         // XXX I am not sure if it works well every time with an empty
ingo@346:         // document in the describe operation of an artifact.
ingo@346:         Document description = db.describe(uuid, null, meta);
ingo@346: 
ingo@346:         NodeList outs = (NodeList) XMLUtils.xpath(
ingo@346:             description,
ingo@346:             XPATH_ARTIFACT_OUTPUTMODES,
ingo@346:             XPathConstants.NODESET,
ingo@346:             ArtifactNamespaceContext.INSTANCE);
ingo@346: 
ingo@346:         int num = outs != null ? outs.getLength() : 0;
ingo@346: 
ingo@346:         logger.debug("Artifact has " + num + " outputs.");
ingo@346: 
ingo@346:         for (int i = 0; i < num; i++) {
ingo@346:             Node out = outs.item(i);
ingo@346: 
ingo@346:             parseOutput(uuid, out);
ingo@346:         }
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     public Map<String, Output> getOuts() {
ingo@346:         return outs;
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     protected void addItem(String out, ManagedFacet item) {
ingo@346:         Output o = outs.get(out);
ingo@346: 
ingo@346:         if (o != null) {
ingo@346:             int num = o.getFacets().size();
ingo@346:             item.setPosition(num+1);
ingo@346: 
ingo@346:             o.addFacet(item);
ingo@346:         }
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     protected void parseOutput(String uuid, Node out) {
ingo@346:         String name = XMLUtils.xpathString(
ingo@346:             out, "@art:name", ArtifactNamespaceContext.INSTANCE);
ingo@346: 
ingo@346:         if (outs.get(name) == null) {
ingo@346:             logger.debug("Create new output: " + name);
ingo@346:             newOutput(out, name);
ingo@346:         }
ingo@346: 
ingo@346:         parseItems(uuid, out, name);
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     protected void newOutput(Node out, String name) {
ingo@346:         String desc = XMLUtils.xpathString(
ingo@346:             out, "@art:description", ArtifactNamespaceContext.INSTANCE);
ingo@346: 
ingo@346:         String mimetype = XMLUtils.xpathString(
ingo@346:             out, "@art:mime-type", ArtifactNamespaceContext.INSTANCE);
ingo@346: 
ingo@346:         Output o = new DefaultOutput(name, desc, mimetype);
ingo@346: 
ingo@346:         outs.put(name, o);
ingo@346:     }
ingo@346: 
ingo@346: 
ingo@346:     protected void parseItems(String uuid, Node out, String outname) {
ingo@346:         NodeList facets = (NodeList) XMLUtils.xpath(
ingo@346:             out, "art:facets/art:facet",
ingo@346:             XPathConstants.NODESET,
ingo@346:             ArtifactNamespaceContext.INSTANCE);
ingo@346: 
ingo@346:         int num = facets != null ? facets.getLength() : 0;
ingo@346: 
ingo@694:         String uri = ArtifactNamespaceContext.NAMESPACE_URI;
ingo@694: 
ingo@346:         logger.debug("Output has " + num + " facets.");
ingo@346: 
ingo@346:         for (int i = 0; i < num; i++) {
ingo@694:             Element facet = (Element) facets.item(i);
ingo@346: 
ingo@694:             String name  = facet.getAttributeNS(uri, "name");
ingo@694:             String desc  = facet.getAttributeNS(uri, "description");
ingo@694:             String index = facet.getAttributeNS(uri, "index");
ingo@346: 
ingo@694:             ManagedFacet item = new ManagedFacet(
ingo@694:                 name, Integer.parseInt(index), desc, uuid, 1, 1);
ingo@346: 
ingo@346:             addItem(outname, item);
ingo@346:         }
ingo@346:     }
ingo@346: }
ingo@346: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :