--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/fis/SelectProductArtifact.java	Thu Jan 14 11:07:27 2010 +0000
@@ -0,0 +1,440 @@
+package de.intevation.gnv.artifacts.fis;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import javax.xml.xpath.XPathConstants;
+
+import org.apache.log4j.Logger;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import de.intevation.artifactdatabase.DefaultArtifact;
+import de.intevation.artifactdatabase.ProxyArtifact;
+import de.intevation.artifactdatabase.XMLUtils;
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.ArtifactFactory;
+import de.intevation.artifacts.ArtifactNamespaceContext;
+import de.intevation.artifacts.CallContext;
+import de.intevation.artifacts.CallMeta;
+import de.intevation.gnv.artifacts.GNVArtifactBase;
+import de.intevation.gnv.artifacts.context.GNVArtifactContext;
+import de.intevation.gnv.artifacts.fis.product.DefaultProduct;
+import de.intevation.gnv.artifacts.fis.product.Product;
+import de.intevation.gnv.artifacts.ressource.RessourceFactory;
+import de.intevation.gnv.state.DefaultInputData;
+import de.intevation.gnv.state.InputData;
+import de.intevation.gnv.utils.ArtifactFactoryUtilities;
+
+
+/**
+ * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
+ */
+public class SelectProductArtifact extends DefaultArtifact {
+
+    public static final String XPATH_IDENTIFIER_REPLACE = "IDENTIFIER";
+
+    public static final String XPATH_ARTIFACT_CONFIGURATION =
+        "/artifact-database/artifacts/artifact[@name='"
+        + XPATH_IDENTIFIER_REPLACE + "']";
+
+    public static final String XPATH_UUID = "art:action/art:uuid/@value";
+
+    public static final String XPATH_HASH = "art:action/art:hash/@value";
+
+    public static final String XPATH_INPUT_DATA_VALUE =
+        "art:action/art:data/art:input[@name='product']/@value";
+
+    /**
+     * this xpath is related to the config.xml document which doesn't have any
+     * prefixes yet
+     */
+    public static final String XPATH_PRODUCTS = "products/product";
+
+    /**
+     * this xpath is related to the config.xml document which doesn't have any
+     * prefixes yet
+     */
+    public static final String XPATH_PRODUCT_PARAMETER = "parameters/parameter";
+
+    public static final String XFORM_URL    = "http://www.w3.org/2002/xforms";
+    public static final String XFORM_PREFIX = "xform";
+
+    private static Logger log = Logger.getLogger(SelectProductArtifact.class);
+
+    private HashMap  products;
+    private Product  current;
+    private Artifact artifact;
+    private String   name;
+
+    public SelectProductArtifact() {
+        super();
+    }
+
+
+    @Override
+    public void setup(
+        String          identifier,
+        ArtifactFactory factory,
+        Object          context
+    ) {
+        log.debug("setup()");
+        super.setup(identifier, factory, context);
+        this.name = factory.getName();
+
+        if (context instanceof GNVArtifactContext) {
+            GNVArtifactContext gnvContext   = (GNVArtifactContext) context;
+            Document           doc          = gnvContext.getConfig();
+            Node               artifactNode = getConfigurationFragment(doc);
+
+            NodeList products = (NodeList) XMLUtils.xpath(
+                artifactNode, XPATH_PRODUCTS, XPathConstants.NODESET);
+
+            if (products != null) {
+                this.products = new HashMap(products.getLength());
+
+                for (int i = 0; i < products.getLength(); i++) {
+                    Element  productNode    = (Element)products.item(i);
+                    String   productName    = productNode.getAttribute("name");
+                    NodeList parameterNodes = (NodeList) XMLUtils.xpath(
+                        productNode,
+                        XPATH_PRODUCT_PARAMETER,
+                        XPathConstants.NODESET
+                    );
+
+                    Collection<InputData> parameter = null;
+                    if (parameterNodes != null) {
+                        parameter = new ArrayList(parameterNodes.getLength());
+
+                        for (int j = 0; j < parameterNodes.getLength(); j++) {
+                            Element parameterNode = (Element)parameterNodes.item(j);
+                            String name  = parameterNode.getAttribute("name");
+                            String value = parameterNode.getAttribute("value");
+                            parameter.add(new DefaultInputData(name, value));
+                        }
+                    }
+                    Node artifactFactoryNode = (Node) XMLUtils.xpath(
+                        productNode, "artifact-factory", XPathConstants.NODE
+                    );
+
+                    ArtifactFactory artifactFactory =
+                        new ArtifactFactoryUtilities().createArtitfactFactor(
+                            doc, artifactFactoryNode
+                        );
+
+                    this.products.put(productName, new DefaultProduct(
+                        productName, parameter, artifactFactory)
+                    );
+                }
+            }
+        }
+    }
+
+
+    @Override
+    public Document feed(Document target, CallContext context) {
+        log.debug("SelectProductArtifact.feed()");
+
+        if (artifact == null) {
+            Document document    = XMLUtils.newDocument();
+            String   productName = XMLUtils.xpathString(
+                target,
+                XPATH_INPUT_DATA_VALUE,
+                ArtifactNamespaceContext.INSTANCE
+            );
+
+            current = (Product) products.get(productName);
+
+            String reportNode = null;
+            String resultNode = null;
+            String msg        = null;
+
+            if (current != null) {
+                reportNode = "result";
+                resultNode = "success";
+                msg        = "Feed was successfully. New Artifact created.";
+            }
+            else {
+                reportNode = "exceptionreport";
+                resultNode = "exception";
+                msg        = "Product does not exist.";
+            }
+
+            XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+                document,
+                ArtifactNamespaceContext.NAMESPACE_URI,
+                ArtifactNamespaceContext.NAMESPACE_PREFIX
+            );
+
+            Element report  = creator.create(reportNode);
+            Element success = creator.create(resultNode);
+            success.setTextContent(msg);
+            report.appendChild(success);
+            document.appendChild(report);
+
+            return document;
+        }
+        else {
+            return artifact.feed(target, context);
+        }
+    }
+
+
+    @Override
+    public Document advance(Document target, CallContext context) {
+        log.debug("SelectProductArtifact.advance()");
+
+        if (artifact != null) {
+            Document result = artifact.advance(target, context);
+            context.putContextValue(ProxyArtifact.REPLACE_PROXY, artifact);
+            return result;
+        }
+
+        Document result = XMLUtils.newDocument();
+        if (current == null) {
+            // artifact needs to be feeded first
+            String msg = "Artifact is not configured properly. Call 'feed' fist.";
+            log.error(msg);
+
+            XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+                result,
+                ArtifactNamespaceContext.NAMESPACE_URI,
+                ArtifactNamespaceContext.NAMESPACE_PREFIX
+            );
+
+            Element report = creator.create("exceptionreport");
+            Element exception = creator.create("exception");
+            exception.setTextContent(msg);
+            report.appendChild(exception);
+            result.appendChild(report);
+
+            return result;
+        }
+
+        String uuid = XMLUtils.xpathString(
+            target, XPATH_UUID, ArtifactNamespaceContext.INSTANCE
+        );
+
+        String hash = XMLUtils.xpathString(
+            target, XPATH_HASH, ArtifactNamespaceContext.INSTANCE
+        );
+
+        artifact = current.getArtifactFactory().createArtifact(
+            uuid, context
+        );
+
+        Document feedDocument = feedDocument(uuid, hash);
+        artifact.feed(feedDocument(uuid, hash), context);
+
+        result = ((GNVArtifactBase) artifact).initialize(context);
+        if (artifact instanceof GNVArtifactBase) {
+            ((GNVArtifactBase) artifact).setProduct(current);
+        }
+        context.putContextValue(ProxyArtifact.REPLACE_PROXY, artifact);
+        return result;
+    }
+
+
+    @Override
+    public Document describe(Document data, CallContext context) {
+        log.debug("SelectProductArtifact.describe()");
+
+        // create root node
+        Document document               = XMLUtils.newDocument();
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX
+        );
+
+        Element rootNode = creator.create("result");
+        Element typeNode = creator.create("type");
+        creator.addAttr(typeNode, "name", "describe");
+        rootNode.appendChild(typeNode);
+
+        Element uuidNode = creator.create("uuid");
+        creator.addAttr(uuidNode, "value", super.identifier);
+        rootNode.appendChild(uuidNode);
+
+        Element hashNode = creator.create("hash");
+        creator.addAttr(hashNode, "value", hash());
+        rootNode.appendChild(hashNode);
+
+        // create output node
+        Element out = creator.create("outputs");
+        rootNode.appendChild(out);
+
+        // create current state
+        Element state = creator.create("state");
+        creator.addAttr(state, "name", "choose-product");
+        creator.addAttr(state, "description", "Auswahl des Produktes.");
+        rootNode.appendChild(state);
+
+        // create reachable states
+        Element rStates = creator.create("reachable-states");
+        appendProducts(document, rStates, context);
+        rootNode.appendChild(rStates);
+
+        // create model
+        Element model = creator.create("model");
+        Element input = creator.create("input");
+        creator.addAttr(input, "name", "product");
+        creator.addAttr(input, "type", "String");
+        model.appendChild(input);
+        rootNode.appendChild(model);
+
+        // create ui
+        Element ui      = creator.create("ui");
+        Element dynamic = creator.create("dynamic");
+        appendSelectProducts(document, dynamic, context.getMeta());
+        ui.appendChild(dynamic);
+        rootNode.appendChild(ui);
+
+        document.appendChild(rootNode);
+        return document;
+    }
+
+
+    @Override
+    public void out(Document document, OutputStream out, CallContext context)
+    throws IOException
+    {
+        log.debug("SelectProductArtifact.out()");
+        if (artifact != null) {
+            artifact.out(document, out, context);
+        }
+    }
+
+
+    protected void appendProducts(
+        Document document,
+        Node     parent,
+        Object   context
+    ) {
+        Iterator iter = products.values().iterator();
+
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX
+        );
+
+        while(iter.hasNext()) {
+            Product prod = (Product) iter.next();
+            String  name = prod.getName();
+
+            Element current = creator.create("state");
+            creator.addAttr(current, "name", name);
+            creator.addAttr(current, "description", name);
+            parent.appendChild(current);
+        }
+    }
+
+
+    protected void appendSelectProducts(
+        Document document,
+        Node     node,
+        CallMeta callMeta
+    ) {
+        RessourceFactory ressource = RessourceFactory.getInstance();
+
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            XFORM_URL,
+            XFORM_PREFIX
+        );
+
+        String  selectboxName = "product";
+        Element selectNode    = creator.create("select1");
+        creator.addAttr(selectNode, "ref", selectboxName);
+
+        Element lableNode = creator.create("label");
+        lableNode.setTextContent(ressource.getRessource(callMeta.getLanguages(),
+                selectboxName,
+                selectboxName
+            )
+        );
+
+        Element choiceNode = creator.create("choices");
+        selectNode.appendChild(lableNode);
+        selectNode.appendChild(choiceNode);
+
+        Iterator it = products.values().iterator();
+        while (it.hasNext()) {
+            Product p               = (Product) it.next();
+            Element itemNode        = creator.create("item");
+            Element choiceLableNode = creator.create("label");
+            choiceLableNode.setTextContent(ressource.getRessource(
+                callMeta.getLanguages(),
+                p.getName(),
+                p.getName()
+            ));
+            itemNode.appendChild(choiceLableNode);
+
+            Element choiceValueNode = creator.create("value");
+            choiceValueNode.setTextContent(p.getName());
+            itemNode.appendChild(choiceValueNode);
+            choiceNode.appendChild(itemNode);
+        }
+
+        node.appendChild(selectNode);
+    }
+
+
+    protected Node getConfigurationFragment(Document document) {
+        String xpathQuery = XPATH_ARTIFACT_CONFIGURATION.replaceAll(
+            XPATH_IDENTIFIER_REPLACE, name
+        );
+
+        return (Node) XMLUtils.xpath(document, xpathQuery, XPathConstants.NODE);
+    }
+
+
+    protected Document feedDocument(String uuid, String hash) {
+        Document document = XMLUtils.newDocument();
+
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX
+        );
+        Element  rootNode = creator.create("action");
+
+        Element typeNode = creator.create("type");
+        creator.addAttr(typeNode, "name", "feed");
+        rootNode.appendChild(typeNode);
+
+        Element uuidNode = creator.create("uuid");
+        creator.addAttr(uuidNode, "value", uuid);
+        rootNode.appendChild(uuidNode);
+
+        Element hashNode = creator.create("hash");
+        creator.addAttr(hashNode, "value", hash);
+        rootNode.appendChild(hashNode);
+
+        Element dataNode = creator.create("data");
+        rootNode.appendChild(dataNode);
+
+        Collection<InputData> parameter = this.current.getParameter();
+        if (parameter != null) {
+            Iterator<InputData> parameterIt = parameter.iterator();
+
+            while (parameterIt.hasNext()) {
+                InputData inputData = parameterIt.next();
+
+                Element inputNode = creator.create("input");
+                creator.addAttr(inputNode, "name", inputData.getName());
+                creator.addAttr(inputNode, "value", inputData.getValue());
+                dataNode.appendChild(inputNode);
+            }
+        }
+        document.appendChild(rootNode);
+        return document;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: