--- a/gnv-artifacts/src/main/java/de/intevation/gnv/utils/MetaWriter.java	Thu May 27 08:48:16 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/utils/MetaWriter.java	Thu May 27 16:43:00 2010 +0000
@@ -7,7 +7,10 @@
 import java.io.OutputStream;
 import java.util.Date;
 
+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;
@@ -34,11 +37,8 @@
     public static final String NODE_TTL       = "ttl";
 
     public static final String META_FILE_NAME = "meta.xml";
-    public static final String ISOLINES_NAME  = "isolines.shp";
-    public static final String POLYGON_NAME   = "polygons.shp";
 
-
-    public static final String CONTEXT_LAYER_TITLE = "wms.title";
+    public static final String XPATH_META = "/art:meta";
 
     /**
      * Constructor.
@@ -46,41 +46,13 @@
     private MetaWriter() {
     }
 
-    /**
-     * Writes a meta information file for product type 'Layer'.
-     *
-     * @param context CallContext object.
-     * @param meta the document where the information should be placed in.
-     * @return the meta document.
-     */
-    public static Node writeLayerMeta(CallContext context, Document meta){
-        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
-            meta,
-            ArtifactNamespaceContext.NAMESPACE_URI,
-            ArtifactNamespaceContext.NAMESPACE_PREFIX);
-        Element root = creator.create("meta");
-        meta.appendChild(root);
-
-        writeAbstractMeta(context, meta, root);
-        return root;
-    }
-
 
     /**
-     * Writes a meta information file for product type 'Horizontalschnitt'.
+     * Just create a new document and insert the root node.
      *
-     * @param context The CallContext object.
-     * @param uuid The UUID of the current artifact.
-     * @param path The destination of the meta file.
-     * @param paramType The parameter type.
-     * @return the meta document.
+     * @return the meta document with necessary root node.
      */
-    public static Document writeHorizontalcrosssectionMeta(
-        CallContext context,
-        String      uuid,
-        String      path,
-        String      paramType)
-    {
+    public static Document initMeta() {
         Document meta = XMLUtils.newDocument();
         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
             meta,
@@ -90,19 +62,78 @@
         Element root = creator.create("meta");
         meta.appendChild(root);
 
-        writeAbstractMeta(context, meta, root);
-        writePolygonMeta(context, meta, root, uuid, paramType);
-        writeIsolineMeta(context, meta, root, uuid, paramType);
-
-        boolean success = writeMetaFile(path, meta);
+        return meta;
+    }
 
-        if (success){
-            return meta;
-        }else{
-            return null;
+    public static boolean insertLayer(
+        CallContext context,
+        Document    document,
+        String      name,
+        String      title,
+        String      data,
+        String      model,
+        String      type,
+        String      status
+    ) {
+        if (document == null) {
+            document = initMeta();
         }
+
+        Node meta = (Node) XMLUtils.xpath(
+            document,
+            XPATH_META,
+            XPathConstants.NODE,
+            ArtifactNamespaceContext.INSTANCE);
+
+        if (meta == null) {
+            logger.error("No meta node was found in the given document. "
+                + "Cannot insert layer!");
+            return false;
+        }
+
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX);
+
+        Element layerEl  = creator.create(LayerInfo.LAYER);
+        Element nameEl   = creator.create(LayerInfo.LAYER_NAME);
+        Element titleEl  = creator.create(LayerInfo.LAYER_TITLE);
+        Element dataEl   = creator.create(LayerInfo.LAYER_DATA);
+        Element modelEl  = creator.create(LayerInfo.LAYER_MODEL);
+        Element typeEl   = creator.create(LayerInfo.LAYER_TYPE);
+        Element statusEl = creator.create(LayerInfo.LAYER_STATUS);
+
+        modelEl.setTextContent(model);
+        nameEl.setTextContent(name);
+        titleEl.setTextContent(title);
+        typeEl.setTextContent(type);
+        statusEl.setTextContent(status);
+        dataEl.setTextContent(data);
+
+        layerEl.appendChild(modelEl);
+        layerEl.appendChild(nameEl);
+        layerEl.appendChild(titleEl);
+        layerEl.appendChild(dataEl);
+        layerEl.appendChild(typeEl);
+        layerEl.appendChild(statusEl);
+
+        if (logger.isDebugEnabled()) {
+            logger.debug("--------------- WMS LAYER PARAMS ---------------");
+            logger.debug("Name  : " + name);
+            logger.debug("Title : " + title);
+            logger.debug("Data  : " + data);
+            logger.debug("Type  : " + type);
+            logger.debug("Model : " + model);
+            logger.debug("Status: " + status);
+        }
+
+        meta.appendChild(layerEl);
+
+        return true;
     }
 
+
     /**
      * Method to write the <i>meta</i> document down to a file.
      *
@@ -160,11 +191,20 @@
      * @param document The meta information document.
      * @param meta The element where the new information need to be appended to.
      */
-    public static void writeAbstractMeta(
+    public static void insertAbstractMeta(
         CallContext callContext,
-        Document    document,
-        Element     meta
+        Document    document
     ) {
+        if (document == null) {
+            document = initMeta();
+        }
+
+        Node meta = (Node) XMLUtils.xpath(
+            document,
+            XPATH_META,
+            XPathConstants.NODE,
+            ArtifactNamespaceContext.INSTANCE);
+
         XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
             document,
             ArtifactNamespaceContext.NAMESPACE_URI,
@@ -179,197 +219,29 @@
         String map = (String)
             context.get(GNVArtifactContext.MAPSERVER_MAP_PATH_KEY);
 
+        Long time  = callContext.getTimeToLive();
+        time       = time != null ? time + new Date().getTime() : null;
+        String ttl = time != null ? time.toString() : null;
+
         if (logger.isDebugEnabled()) {
             logger.debug("MAPSERVER PATH: " + server);
             logger.debug("MAP PATH: " + map);
+            logger.debug("TTL: " + ttl);
         }
 
         Element mapserver  = creator.create(NODE_MAPSERVER);
         Element serverPath = creator.create(NODE_SERVER);
         Element mapPath    = creator.create(NODE_MAP);
+        Element timetolive = creator.create(NODE_TTL);
 
         mapPath.setTextContent(map);
         serverPath.setTextContent(server);
+        timetolive.setTextContent(ttl);
 
         mapserver.appendChild(serverPath);
         mapserver.appendChild(mapPath);
+        mapserver.appendChild(timetolive);
         meta.appendChild(mapserver);
     }
-
-    /**
-     * Append layer information to the meta document.
-     *
-     * @param callContext The CallContext object.
-     * @param document The meta document.
-     * @param root The element where the new information need to be appended to.
-     * @param uuid The UUID of the current artifact.
-     * @param paramType The parameter type (e.g. salinity).
-     * @param layerType The layer type.
-     * @param shapefileName the name of the Shapefile
-     * @param shapefileName the Title of the Layer
-     */
-    public static void writeLayerMeta(
-        CallContext callContext,
-        Document    document,
-        Node        root,
-        String      uuid,
-        String      paramType,
-        String      layerType,
-        String      shapefileName,
-        String      layerTitle
-    ) {
-        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
-            document,
-            ArtifactNamespaceContext.NAMESPACE_URI,
-            ArtifactNamespaceContext.NAMESPACE_PREFIX);
-
-        Long time  = callContext.getTimeToLive();
-        time       = time != null ? time + new Date().getTime() : null;
-        String ttl = time != null ? time.toString() : null;
-
-        logger.debug("Artifacts time to live: " + ttl);
-
-        Element layer      = creator.create(LayerInfo.LAYER);
-        Element model      = creator.create(LayerInfo.LAYER_MODEL);
-        Element name       = creator.create(LayerInfo.LAYER_NAME);
-        Element title  = creator.create(LayerInfo.LAYER_TITLE);
-        Element type       = creator.create(LayerInfo.LAYER_TYPE);
-        Element status     = creator.create(LayerInfo.LAYER_STATUS);
-        Element data       = creator.create(LayerInfo.LAYER_DATA);
-        Element timeToLive = creator.create(NODE_TTL);
-
-        model.setTextContent(paramType);
-        name.setTextContent(uuid);
-        type.setTextContent(layerType);
-        status.setTextContent("OFF");
-        data.setTextContent(shapefileName);
-        timeToLive.setTextContent(ttl);
-
-        title.setTextContent(layerTitle);
-
-        layer.appendChild(model);
-        layer.appendChild(name);
-        layer.appendChild(title);
-        layer.appendChild(type);
-        layer.appendChild(status);
-        layer.appendChild(data);
-        layer.appendChild(timeToLive);
-
-        root.appendChild(layer);
-    }
-
-
-    /**
-     * Append polygon layer information to meta document.
-     *
-     * @param context
-     * @param document The meta document.
-     * @param meta The element where the new information need to be appended to.
-     * @param uuid The UUID of the current artifact.
-     * @param paramType The parameter type (e.g. salinity).
-     */
-    public static void writePolygonMeta(
-        CallContext context,
-        Document    document,
-        Element     meta,
-        String      uuid,
-        String      paramType
-    ) {
-        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
-            document,
-            ArtifactNamespaceContext.NAMESPACE_URI,
-            ArtifactNamespaceContext.NAMESPACE_PREFIX);
-
-        Long time  = context.getTimeToLive();
-        time       = time != null ? time + new Date().getTime() : null;
-        String ttl = time != null ? time.toString() : null;
-
-        logger.debug("Artifacts time to live: " + ttl);
-
-        Element layer  = creator.create(LayerInfo.LAYER);
-        Element model  = creator.create(LayerInfo.LAYER_MODEL);
-        Element name   = creator.create(LayerInfo.LAYER_NAME);
-        Element title  = creator.create(LayerInfo.LAYER_TITLE);
-        Element type   = creator.create(LayerInfo.LAYER_TYPE);
-        Element status = creator.create(LayerInfo.LAYER_STATUS);
-        Element data   = creator.create(LayerInfo.LAYER_DATA);
-        Element timeToLive = creator.create(NODE_TTL);
-
-        model.setTextContent(paramType);
-        name.setTextContent(uuid);
-        title.setTextContent(
-            (String) context.getContextValue(CONTEXT_LAYER_TITLE));
-        type.setTextContent("POLYGON");
-        status.setTextContent("OFF");
-        data.setTextContent(POLYGON_NAME);
-        timeToLive.setTextContent(ttl);
-
-        layer.appendChild(model);
-        layer.appendChild(name);
-        layer.appendChild(title);
-        layer.appendChild(type);
-        layer.appendChild(status);
-        layer.appendChild(data);
-        layer.appendChild(timeToLive);
-
-        meta.appendChild(layer);
-    }
-
-
-    /**
-     * Append isoline layer information to meta document.
-     *
-     * @param context
-     * @param document The meta document.
-     * @param meta The element where the new information need to be appended to.
-     * @param uuid The UUID of the current artifact.
-     * @param paramType The parameter type (e.g. salinity).
-     */
-    public static void writeIsolineMeta(
-        CallContext context,
-        Document    document,
-        Element     meta,
-        String      uuid,
-        String      paramType
-    ) {
-        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
-            document,
-            ArtifactNamespaceContext.NAMESPACE_URI,
-            ArtifactNamespaceContext.NAMESPACE_PREFIX);
-
-        Long time  = context.getTimeToLive();
-        time       = time != null ? time + new Date().getTime() : null;
-        String ttl = time != null ? time.toString() : null;
-
-        logger.debug("Artifacts time to live: " + ttl);
-
-        Element layer  = creator.create(LayerInfo.LAYER);
-        Element model  = creator.create(LayerInfo.LAYER_MODEL);
-        Element name   = creator.create(LayerInfo.LAYER_NAME);
-        Element title  = creator.create(LayerInfo.LAYER_TITLE);
-        Element type   = creator.create(LayerInfo.LAYER_TYPE);
-        Element status = creator.create(LayerInfo.LAYER_STATUS);
-        Element data   = creator.create(LayerInfo.LAYER_DATA);
-        Element timeToLive = creator.create(NODE_TTL);
-
-        model.setTextContent(paramType+"_isolines");
-        name.setTextContent(uuid);
-        title.setTextContent(
-            (String) context.getContextValue(CONTEXT_LAYER_TITLE));
-        type.setTextContent("LINE");
-        status.setTextContent("OFF");
-        data.setTextContent(ISOLINES_NAME);
-        timeToLive.setTextContent(ttl);
-
-        layer.appendChild(model);
-        layer.appendChild(name);
-        layer.appendChild(title);
-        layer.appendChild(type);
-        layer.appendChild(status);
-        layer.appendChild(data);
-        layer.appendChild(timeToLive);
-
-        meta.appendChild(layer);
-    }
 }
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