ingo@0: /*
ingo@0:  * Copyright (c) 2010 by Intevation GmbH
ingo@0:  *
ingo@0:  * This program is free software under the LGPL (>=v2.1)
ingo@0:  * Read the file LGPL.txt coming with the software for details
ingo@0:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@0:  */
teichmann@72: package org.dive4elements.artifacts.httpclient.utils;
ingo@0: 
ingo@0: import java.util.Map;
ingo@0: 
ingo@0: import javax.xml.xpath.XPathConstants;
ingo@0: 
tom@125: import org.apache.logging.log4j.Logger;
tom@125: import org.apache.logging.log4j.LogManager;
ingo@0: 
ingo@0: import org.w3c.dom.Document;
ingo@0: import org.w3c.dom.Element;
ingo@0: import org.w3c.dom.NodeList;
ingo@0: 
teichmann@72: import org.dive4elements.artifacts.httpclient.objects.Artifact;
teichmann@72: import org.dive4elements.artifacts.httpclient.objects.ArtifactFactory;
ingo@0: 
ingo@0: public class ArtifactProtocolUtils {
ingo@0: 
ingo@0:     private static final Logger logger =
tom@125:         LogManager.getLogger(ArtifactProtocolUtils.class);
ingo@0: 
ingo@0: 
ingo@0:     public static ArtifactFactory[] extractArtifactFactories(Document doc) {
ingo@0:         NodeList elements = (NodeList) XMLUtils.getXPath(
ingo@0:             doc,
ingo@0:             "/art:result/art:factories/art:factory",
ingo@0:             XPathConstants.NODESET,
ingo@0:             ArtifactNamespaceContext.INSTANCE);
ingo@0: 
ingo@0:         if (elements == null || elements.getLength() == 0) {
ingo@0:             return null;
ingo@0:         }
ingo@0: 
ingo@0:         ArtifactFactory[] facs = new ArtifactFactory[elements.getLength()];
ingo@0: 
sascha@27:         String uri = ArtifactNamespaceContext.NAMESPACE_URI;
ingo@0: 
sascha@28:         for (int idx = 0; idx < facs.length; idx++) {
sascha@27:             Element factory = (Element)elements.item(idx);
sascha@27:             String desc  = factory.getAttributeNS(uri, "description");
sascha@27:             String name  = factory.getAttributeNS(uri, "name");
sascha@27: 
sascha@27:             if (name.length() != 0) {
ingo@0:                 facs[idx] = new ArtifactFactory(name, desc);
ingo@0:             }
ingo@0:         }
ingo@0: 
ingo@0:         return facs;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     public static Document createCreateDocument(String fis) {
ingo@0:         Document document = XMLUtils.newDocument();
ingo@0: 
ingo@0:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@0:             document,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_PREFIX
ingo@0:         );
ingo@0: 
ingo@0:         Element action = creator.create("action");
ingo@0: 
ingo@0:         Element type = creator.create("type");
ingo@0:         type.setAttribute("name", "create");
ingo@0: 
ingo@0:         Element factory = creator.create("factory");
ingo@0:         factory.setAttribute("name", fis);
ingo@0: 
ingo@0:         action.appendChild(type);
ingo@0:         action.appendChild(factory);
ingo@0:         document.appendChild(action);
ingo@0: 
ingo@0:         return document;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     /**
ingo@0:      * Returns a new artifact defined by uuid and hash values of the document
ingo@0:      * returned by the artifact server after creating a new artifact.
ingo@0:      *
ingo@0:      * @param document Contains information about the server-side created
ingo@0:      * artifact.
ingo@0:      * @return a new artifact object.
ingo@0:      */
ingo@0:     public static Artifact extractArtifact(Document document) {
ingo@0:         String uuid = XMLUtils.getStringXPath(
ingo@0:             document,
ingo@0:             "/art:result/art:uuid/@value");
ingo@0: 
ingo@0:         String hash = XMLUtils.getStringXPath(
ingo@0:             document,
ingo@0:             "/art:result/art:hash/@value");
ingo@0: 
ingo@0:         logger.info("NEW Artifact: " + uuid + " / " + hash);
ingo@0:         return new Artifact(uuid, hash);
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     private static Element createArtifactAction(
ingo@0:         XMLUtils.ElementCreator creator,
ingo@0:         Artifact                artifact,
ingo@0:         String                  artifactAction)
ingo@0:     {
ingo@0:         Element action = creator.create("action");
ingo@0: 
ingo@0:         Element type = creator.create("type");
ingo@0:         type.setAttribute("name", artifactAction);
ingo@0: 
ingo@0:         Element uuid = creator.create("uuid");
ingo@0:         uuid.setAttribute("value", artifact.getUuid());
ingo@0: 
ingo@0:         Element hash = creator.create("hash");
ingo@0:         hash.setAttribute("value", artifact.getHash());
ingo@0: 
ingo@0:         action.appendChild(type);
ingo@0:         action.appendChild(uuid);
ingo@0:         action.appendChild(hash);
ingo@0: 
ingo@0:         return action;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     public static Document createFeedDocument(Artifact artifact, Map attr) {
ingo@0:         Document document = XMLUtils.newDocument();
ingo@0: 
ingo@0:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@0:             document,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_PREFIX
ingo@0:         );
ingo@0: 
ingo@0:         Element action = createArtifactAction(creator, artifact, "feed");
ingo@0:         Element data   = creator.create("data");
ingo@0: 
sascha@28:         for (Map.Entry<String, Object> entry:
sascha@28:             ((Map<String, Object>)attr).entrySet()) {
sascha@28: 
sascha@28:             String key    = entry.getKey();
sascha@28:             Object values = entry.getValue();
ingo@0: 
ingo@0:             if (values instanceof Object[]) {
ingo@0:                 appendInputNodes(creator, data, key, (Object[]) values);
ingo@0:             }
ingo@0:             else {
ingo@0:                 appendInputNodes(creator, data, key, values);
ingo@0:             }
ingo@0:         }
ingo@0: 
ingo@0:         action.appendChild(data);
ingo@0:         document.appendChild(action);
ingo@0: 
ingo@0:         return document;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     private static void appendInputNodes(
ingo@0:         XMLUtils.ElementCreator creator,
ingo@0:         Element                 root,
ingo@0:         String                  key,
ingo@0:         Object                  value)
ingo@0:     {
ingo@0:         Element input = creator.create("input");
ingo@0:         input.setAttribute("name", key);
ingo@0:         input.setAttribute("value", (String) value);
ingo@0:         root.appendChild(input);
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     private static void appendInputNodes(
ingo@0:         XMLUtils.ElementCreator creator,
ingo@0:         Element                 root,
ingo@0:         String                  key,
ingo@0:         Object[]                values)
ingo@0:     {
ingo@0:         for (Object value: values) {
ingo@0:             Element input = creator.create("input");
ingo@0:             input.setAttribute("name", key);
ingo@0:             input.setAttribute("value", (String) value);
ingo@0:             root.appendChild(input);
ingo@0:         }
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     public static Document createDescribeDocument(Artifact art, boolean ui) {
ingo@0:         Document document = XMLUtils.newDocument();
ingo@0: 
ingo@0:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@0:             document,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_PREFIX
ingo@0:         );
ingo@0: 
ingo@0:         Element action    = createArtifactAction(creator, art, "describe");
ingo@0:         Element includeUi = creator.create("include-ui");
ingo@0:         includeUi.setTextContent(String.valueOf(ui));
ingo@0: 
ingo@0:         action.appendChild(includeUi);
ingo@0:         document.appendChild(action);
ingo@0: 
ingo@0:         return document;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     public static Document createAdvanceDocument(Artifact art, String target) {
ingo@0:         Document document = XMLUtils.newDocument();
ingo@0: 
ingo@0:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@0:             document,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_PREFIX
ingo@0:         );
ingo@0: 
ingo@0:         Element action    = createArtifactAction(creator, art, "advance");
ingo@0:         Element targetEle = creator.create("target");
ingo@0:         targetEle.setAttribute("name", target);
ingo@0: 
ingo@0:         action.appendChild(targetEle);
ingo@0:         document.appendChild(action);
ingo@0: 
ingo@0:         return document;
ingo@0:     }
ingo@0: 
ingo@0: 
ingo@0:     public static Document createChartDocument(Artifact artifact, Map opts) {
ingo@0:         Document document = XMLUtils.newDocument();
ingo@0: 
ingo@0:         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
ingo@0:             document,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_URI,
ingo@0:             ArtifactNamespaceContext.NAMESPACE_PREFIX
ingo@0:         );
ingo@0: 
ingo@0:         Element action = createArtifactAction(creator, artifact, "out");
ingo@0:         Element out    = creator.create("out");
ingo@0:         out.setAttribute("name", "chart");
ingo@0: 
ingo@0:         Element export = creator.create("export");
ingo@0:         export.setAttribute("name", "img");
ingo@0: 
ingo@0:         Element mimetype = creator.create("mime-type");
ingo@0:         export.setAttribute("value", (String) opts.get("mime-type"));
ingo@0: 
ingo@0:         Element params = creator.create("params");
ingo@0: 
ingo@0:         Element width = creator.create("input");
ingo@0:         width.setAttribute("name", "width");
ingo@0:         width.setAttribute("value", (String) opts.get("width"));
ingo@0: 
ingo@0:         Element height = creator.create("input");
ingo@0:         height.setAttribute("name", "height");
ingo@0:         height.setAttribute("value", (String) opts.get("height"));
ingo@0: 
ingo@0:         Element points = creator.create("input");
ingo@0:         points.setAttribute("name", "points");
ingo@0:         points.setAttribute("value", (String) opts.get("points"));
ingo@0: 
ingo@0:         params.appendChild(width);
ingo@0:         params.appendChild(height);
ingo@0:         params.appendChild(points);
ingo@0: 
ingo@0:         out.appendChild(export);
ingo@0:         out.appendChild(mimetype);
ingo@0:         out.appendChild(params);
ingo@0: 
ingo@0:         action.appendChild(out);
ingo@0:         document.appendChild(action);
ingo@0: 
ingo@0:         return document;
ingo@0:     }
ingo@0: }
ingo@0: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: