teichmann@5835: package org.dive4elements.river.client.server;
ingo@16: 
ingo@16: import java.util.ArrayList;
ingo@16: import java.util.List;
ingo@16: 
ingo@16: import javax.xml.xpath.XPathConstants;
ingo@16: 
ingo@16: import org.w3c.dom.Document;
ingo@803: import org.w3c.dom.Element;
ingo@16: import org.w3c.dom.Node;
ingo@16: import org.w3c.dom.NodeList;
ingo@16: 
ingo@1367: import org.apache.log4j.Logger;
ingo@1367: 
teichmann@5835: import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
teichmann@5835: import org.dive4elements.artifacts.common.utils.ClientProtocolUtils;
teichmann@5835: import org.dive4elements.artifacts.common.utils.XMLUtils;
ingo@16: 
teichmann@5835: import org.dive4elements.river.client.shared.model.ArtifactDescription;
teichmann@5835: import org.dive4elements.river.client.shared.model.DataItem;
teichmann@5835: import org.dive4elements.river.client.shared.model.DataList;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultArtifactDescription;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultData;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultDataItem;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultOutputMode;
teichmann@5835: import org.dive4elements.river.client.shared.model.DoubleArrayData;
teichmann@5835: import org.dive4elements.river.client.shared.model.DoubleRangeData;
teichmann@5835: import org.dive4elements.river.client.shared.model.IntegerArrayData;
teichmann@5835: import org.dive4elements.river.client.shared.model.IntegerRangeData;
teichmann@5835: import org.dive4elements.river.client.shared.model.IntegerOptionsData;
teichmann@5835: import org.dive4elements.river.client.shared.model.LongRangeData;
teichmann@5835: import org.dive4elements.river.client.shared.model.OutputMode;
teichmann@5835: import org.dive4elements.river.client.shared.model.Recommendation;
teichmann@5835: import org.dive4elements.river.client.shared.model.WQDataItem;
ingo@16: 
ingo@16: 
ingo@16: /**
ingo@16:  * This factory class helps creating an {@link ArtifactDescription} based on the
ingo@16:  * DESCRIBE document of an artifact returned by the artifact server. Use the
ingo@16:  * {@link createArtifactDescription(org.w3c.dom.Document)} method with the
ingo@16:  * DESCRIBE document to create such an {@link ArtifactDescription}.
ingo@16:  *
ingo@16:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@16:  */
ingo@16: public class ArtifactDescriptionFactory {
ingo@16: 
ingo@1367:     private static final Logger logger =
ingo@1367:         Logger.getLogger(ArtifactDescriptionFactory.class);
ingo@1367: 
ingo@1367: 
ingo@16:     public static final String XPATH_STATE_NAME = "@art:name";
ingo@16: 
ingo@22:     public static final String XPATH_UIPROVIDER = "@art:uiprovider";
ingo@22: 
ingo@2500:     public static final String XPATH_HELP_TEXT = "@art:helpText";
ingo@2500: 
ingo@32:     public static final String XPATH_REACHABLE_STATE = "art:state";
ingo@32: 
ingo@51:     public static final String XPATH_STATIC_STATE_NODE = "art:state";
ingo@51: 
ingo@34:     public static final String XPATH_STATIC_DATA_NODE = "art:data";
ingo@34: 
ingo@34:     public static final String XPATH_STATIC_ITEM_NODE = "art:item";
ingo@34: 
ingo@803:     public static final String XPATH_RECOMMENDED_ARTIFACTS =
ingo@808:         "/art:result/art:recommended-artifacts//*[@factory]";
ingo@803: 
ingo@16:     /**
ingo@16:      * This method creates the {@link ArtifactDescription} of the DESCRIBE
ingo@16:      * document <i>doc</i>.
ingo@16:      *
ingo@16:      * @param doc A DESCRIBE document.
ingo@16:      *
ingo@16:      * @return the {@link ArtifactDescription}.
ingo@16:      */
ingo@16:     public static ArtifactDescription createArtifactDescription(Document doc) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.createArtifactDescription");
ingo@16: 
ingo@16:         Node currentState = ClientProtocolUtils.getCurrentState(doc);
ingo@16:         Node staticNode   = ClientProtocolUtils.getStaticUI(doc);
ingo@16:         Node dynamicNode  = ClientProtocolUtils.getDynamicUI(doc);
ingo@32:         Node reachable    = ClientProtocolUtils.getReachableStates(doc);
ingo@65:         NodeList outputs  = ClientProtocolUtils.getOutputModes(doc);
ingo@16: 
ingo@16:         String state = (String) XMLUtils.xpath(
ingo@16:             currentState,
ingo@16:             XPATH_STATE_NAME,
ingo@16:             XPathConstants.STRING,
ingo@16:             ArtifactNamespaceContext.INSTANCE);
ingo@1367: 
ingo@1367:         logger.debug("Current state name: " + state);
ingo@16: 
ingo@51:         DataList currentData = extractCurrentData(dynamicNode, state);
ingo@51:         DataList[] old       = extractOldData(staticNode);
ingo@34:         String[] states      = extractReachableStates(reachable);
ingo@803:         OutputMode[] outs    = extractOutputModes(outputs);
ingo@807:         Recommendation[] rec = extractRecommendedArtifacts(doc);
ingo@16: 
ingo@65:         return new DefaultArtifactDescription(
ingo@65:             old,
ingo@65:             currentData,
ingo@65:             state,
ingo@65:             states,
ingo@803:             outs,
ingo@807:             rec);
ingo@16:     }
ingo@16: 
ingo@16: 
ingo@16:     /**
ingo@16:      * This method extracts the data that the user is able to enter in the
ingo@16:      * current state of the artifact.
ingo@16:      *
ingo@16:      * @param dynamicNode The dynamic node of the DESCRIBE document.
ingo@51:      * @param state The name of the current state.
ingo@16:      *
ingo@16:      * @return A {@link Data} object that represents the data which might be
ingo@16:      * entered by the user in the current state or null, if no data might be
ingo@16:      * entered.
ingo@16:      */
ingo@51:     protected static DataList extractCurrentData(Node dynamicNode, String state) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractCurrentData");
ingo@16: 
ingo@51:         NodeList data     = ClientProtocolUtils.getSelectNode(dynamicNode);
ingo@2500:         String help       = extractHelpText(dynamicNode);
ingo@51:         String uiProvider = extractUIProvider(dynamicNode);
ingo@16: 
ingo@51:         if (data == null || data.getLength() == 0) {
ingo@51:             return null;
ingo@51:         }
ingo@16: 
ingo@1522:         int      dataNum = data.getLength();
ingo@2500:         DataList list    = new DataList(state, dataNum, uiProvider, null, help);
ingo@51: 
ingo@51:         for (int i = 0; i < dataNum; i++) {
ingo@1522:             Element   d  = (Element) data.item(i);
ingo@1522:             String label = ClientProtocolUtils.getLabel(d);
ingo@1522:             String name  = XMLUtils.xpathString(
ingo@1522:                 d, "@art:name", ArtifactNamespaceContext.INSTANCE);
ingo@1522:             String type  = XMLUtils.xpathString(
ingo@1522:                 d, "@art:type", ArtifactNamespaceContext.INSTANCE);
ingo@51: 
ingo@1522:             logger.debug("Create new IntegerRangeData object for: " + name);
ingo@1522:             logger.debug("New Data is from type: " + type);
ingo@51: 
felix@1592:             // TODO replace with DataFactory.
felix@1592: 
ingo@1522:             if (type == null || type.length() == 0) {
ingo@1522:                 NodeList   choices   = ClientProtocolUtils.getItemNodes(d);
ingo@1522:                 DataItem[] dataItems = extractCurrentDataItems(choices);
ingo@1522:                 DataItem   def       = extractDefaultDataItem(d);
ingo@51: 
ingo@1522:                 list.add(new DefaultData(name, label, null, dataItems, def));
ingo@1522:             }
ingo@1522:             else if (type.equals("intrange")) {
ingo@1566:                 String min = ClientProtocolUtils.getMinNode(d);
ingo@1566:                 String max = ClientProtocolUtils.getMaxNode(d);
ingo@1566: 
ingo@1566:                 String defMin = ClientProtocolUtils.getDefMin(d);
ingo@1566:                 String defMax = ClientProtocolUtils.getDefMax(d);
ingo@1522: 
ingo@1522:                 try {
ingo@1522:                     int lower = Integer.parseInt(min);
ingo@1522:                     int upper = Integer.parseInt(max);
ingo@1566: 
ingo@1566:                     if (defMin != null && defMax != null) {
ingo@1566:                         list.add(new IntegerRangeData(
ingo@1566:                                 name, label,
ingo@1566:                                 lower, upper,
ingo@1566:                                 Integer.parseInt(defMin),
ingo@1566:                                 Integer.parseInt(defMax)));
ingo@1566:                     }
ingo@1566:                     else {
ingo@1566:                         list.add(
ingo@1566:                             new IntegerRangeData(name, label, lower, upper));
ingo@1566:                     }
ingo@1522:                 }
ingo@1522:                 catch (NumberFormatException nfe) {
ingo@1522:                     logger.warn("NumberFormatException: ", nfe);
ingo@1522:                 }
ingo@1522:             }
ingo@4132:             else if (type.equals("longrange")) {
ingo@4132:                 String min = ClientProtocolUtils.getMinNode(d);
ingo@4132:                 String max = ClientProtocolUtils.getMaxNode(d);
ingo@4132: 
ingo@4132:                 String defMin = ClientProtocolUtils.getDefMin(d);
ingo@4132:                 String defMax = ClientProtocolUtils.getDefMax(d);
ingo@4132: 
ingo@4132:                 try {
ingo@4132:                     long lower = Long.valueOf(min);
ingo@4132:                     long upper = Long.valueOf(max);
ingo@4132: 
ingo@4132:                     if (defMin != null && defMax != null) {
ingo@4132:                         list.add(new LongRangeData(
ingo@4132:                                 name, label,
ingo@4132:                                 lower, upper,
ingo@4132:                                 Long.valueOf(defMin),
ingo@4132:                                 Long.valueOf(defMax)));
ingo@4132:                     }
ingo@4132:                 }
ingo@4132:                 catch (NumberFormatException nfe) {
ingo@4132:                     logger.warn("NumberFormatException: ", nfe);
ingo@4132:                 }
ingo@4132:             }
ingo@1527:             else if (type.equals("intarray")) {
ingo@1527:                 list.add(new IntegerArrayData(name, label, null));
ingo@1527:             }
ingo@2521:             else if (type.equals("intoptions") && uiProvider.equals("parameter-matrix")) {
ingo@2532:                 list.add(DataFactory.createIntegerOptionsData(d, name, label));
ingo@2532:             }
ingo@2532:             else if (type.equals("options")) {
ingo@2532:                 list.add(DataFactory.createStringOptionsData(d, name, label));
ingo@2521:             }
ingo@1527:             else if (type.equals("intoptions")) {
ingo@1527:                 NodeList   choices = ClientProtocolUtils.getItemNodes(d);
ingo@1527:                 DataItem[] opts    = extractCurrentDataItems(choices);
ingo@1527: 
ingo@1527:                 list.add(new IntegerOptionsData(name, label, opts));
ingo@1527:             }
ingo@1595:             else if (type.equals("doublearray")) {
ingo@1595:                 list.add(new DoubleArrayData(name, label, null));
ingo@1595:             }
felix@1592:             else {
felix@1592:                 logger.warn("Unrecognized Dynamic data type.");
felix@1592:                 NodeList   choices   = ClientProtocolUtils.getItemNodes(d);
felix@1592:                 DataItem[] dataItems = extractCurrentDataItems(choices);
felix@1592:                 DataItem   def       = extractDefaultDataItem(d);
felix@1592: 
felix@1593:                 String min = ClientProtocolUtils.getMinNode(d);
felix@1593:                 String max = ClientProtocolUtils.getMaxNode(d);
felix@1593:                 if (min != null && max != null) {
felix@1593:                     list.add(new DoubleRangeData(
felix@1593:                         name, label,
felix@1593:                         Double.valueOf(min), Double.valueOf(max),
felix@1593:                         Double.valueOf(min), Double.valueOf(max)));
felix@1593:                 }
felix@1593: 
felix@1592:                 list.add(new DefaultData(name, label, null, dataItems, def));
felix@1592:             }
felix@1592: 
ingo@51:         }
ingo@51: 
ingo@51:         return list;
ingo@16:     }
ingo@16: 
ingo@16: 
ingo@16:     /**
ingo@515:      * This method extracts the default value of a Data object.
ingo@515:      *
ingo@515:      * @param data The data object node.
ingo@515:      *
ingo@515:      * @return the default DataItem.
ingo@515:      */
ingo@515:     protected static DataItem extractDefaultDataItem(Node data) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractDefaultDataItem");
ingo@515: 
ingo@515:         String value = XMLUtils.xpathString(
ingo@515:             data, "@art:defaultValue", ArtifactNamespaceContext.INSTANCE);
ingo@515: 
ingo@515:         String label = XMLUtils.xpathString(
ingo@515:             data, "@art:defaultLabel", ArtifactNamespaceContext.INSTANCE);
ingo@515: 
ingo@515:         if (value != null && label != null) {
ingo@515:             return new DefaultDataItem(label, null, value);
ingo@515:         }
ingo@515: 
ingo@515:         return null;
ingo@515:     }
ingo@515: 
ingo@515: 
ingo@515:     /**
ingo@16:      * This method extract the {@link DataItem}s of the DESCRIBE document.
ingo@16:      *
ingo@16:      * @param items The items in the DESCRIBE document.
ingo@16:      *
ingo@16:      * @return the {@link DataItem}s.
ingo@16:      */
ingo@16:     protected static DataItem[] extractCurrentDataItems(NodeList items) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractCurrentDataItems");
ingo@16: 
ingo@16:         if (items == null || items.getLength() == 0) {
ingo@1367:             logger.debug("No data items found.");
ingo@16:             return null;
ingo@16:         }
ingo@16: 
ingo@16:         int count = items.getLength();
ingo@16: 
ingo@16:         List<DataItem> dataItems = new ArrayList<DataItem>(count);
ingo@16: 
ingo@16:         for (int i = 0; i < count; i++) {
ingo@16:             Node item    = items.item(i);
ingo@16:             String label = ClientProtocolUtils.getLabel(item);
ingo@16:             String value = ClientProtocolUtils.getValue(item);
ingo@16: 
ingo@565:             double[] mmQ = extractMinMaxQValues(item);
ingo@565:             double[] mmW = extractMinMaxWValues(item);
ingo@565: 
ingo@565:             if (mmQ != null || mmW != null) {
ingo@565:                 dataItems.add(new WQDataItem(label, null, value, mmQ, mmW));
ingo@565:             }
ingo@565:             else {
ingo@565:                 dataItems.add(new DefaultDataItem(label, null, value));
ingo@565:             }
ingo@16:         }
ingo@16: 
sascha@3379:         return dataItems.toArray(new DataItem[count]);
ingo@16:     }
ingo@22: 
ingo@22: 
ingo@565:     protected static double[] extractMinMaxQValues(Node item) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractMinMaxQValues");
ingo@565: 
ingo@565:         if (item == null) {
ingo@1367:             logger.debug("This node is empty - no min/max Q values.");
ingo@565:             return null;
ingo@565:         }
ingo@565: 
ingo@565:         Node node = (Node) XMLUtils.xpath(
ingo@565:             item,
ingo@565:             "art:range[@art:type='Q']",
ingo@565:             XPathConstants.NODE,
ingo@565:             ArtifactNamespaceContext.INSTANCE);
ingo@565: 
ingo@565:         if (node == null) {
ingo@1367:             logger.debug("No min/max Q values found.");
ingo@565:             return null;
ingo@565:         }
ingo@565: 
ingo@565:         return extractMinMaxValues(node);
ingo@565:     }
ingo@565: 
ingo@565: 
ingo@565:     protected static double[] extractMinMaxWValues(Node item) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractMinMaxWValues");
ingo@565: 
ingo@565:         if (item == null) {
ingo@1367:             logger.debug("This node is empty - no min/max W values.");
ingo@565:             return null;
ingo@565:         }
ingo@565: 
ingo@565:         Node node = (Node) XMLUtils.xpath(
ingo@565:             item,
ingo@565:             "art:range[@art:type='W']",
ingo@565:             XPathConstants.NODE,
ingo@565:             ArtifactNamespaceContext.INSTANCE);
ingo@565: 
ingo@565:         if (node == null) {
ingo@1367:             logger.debug("No min/max W values found.");
ingo@565:             return null;
ingo@565:         }
ingo@565: 
ingo@565:         return extractMinMaxValues(node);
ingo@565:     }
ingo@565: 
ingo@565: 
ingo@565:     protected static double[] extractMinMaxValues(Node node) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractMinMaxValues");
ingo@565: 
ingo@565:         String minStr = XMLUtils.xpathString(
ingo@565:             node, "art:min/text()", ArtifactNamespaceContext.INSTANCE);
ingo@565: 
ingo@565:         String maxStr = XMLUtils.xpathString(
ingo@565:             node, "art:max/text()", ArtifactNamespaceContext.INSTANCE);
ingo@565: 
ingo@565:         if (maxStr == null || minStr == null) {
ingo@1367:             logger.debug("No min/max values found.");
ingo@565:             return null;
ingo@565:         }
ingo@565: 
ingo@565:         try {
ingo@565:             double min = Double.valueOf(minStr);
ingo@565:             double max = Double.valueOf(maxStr);
ingo@565: 
ingo@565:             return new double[] { min, max };
ingo@565:         }
ingo@565:         catch (NumberFormatException nfe) {
ingo@1367:             logger.debug("Error while parsing min/max values.");
ingo@565:         }
ingo@565: 
ingo@565:         return null;
ingo@565:     }
ingo@565: 
ingo@565: 
ingo@22:     /**
ingo@34:      * This method extracts the data objects from the data node of the static ui
ingo@34:      * part of the DESCRIBE document.
ingo@34:      *
ingo@34:      * @param staticNode The static ui node of the DESCRIBE.
ingo@34:      *
ingo@51:      * @return the DataList objects.
ingo@34:      */
ingo@51:     protected static DataList[] extractOldData(Node staticNode) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractOldData()");
ingo@34: 
ingo@51:         NodeList stateNodes = (NodeList) XMLUtils.xpath(
ingo@34:             staticNode,
ingo@51:             XPATH_STATIC_STATE_NODE,
ingo@34:             XPathConstants.NODESET,
ingo@34:             ArtifactNamespaceContext.INSTANCE);
ingo@34: 
ingo@51:         if (stateNodes == null || stateNodes.getLength() == 0) {
ingo@1367:             logger.debug("No old items found.");
ingo@34:             return null;
ingo@34:         }
ingo@34: 
ingo@51:         int count       = stateNodes.getLength();
ingo@51:         DataList[] data = new DataList[count];
ingo@34: 
ingo@34:         for (int i = 0; i < count; i++) {
ingo@51:             Node tmp = stateNodes.item(i);
ingo@34: 
ingo@34:             String name = XMLUtils.xpathString(
ingo@34:                 tmp, "@art:name", ArtifactNamespaceContext.INSTANCE);
ingo@52:             String uiprovider = XMLUtils.xpathString(
ingo@52:                 tmp, "@art:uiprovider", ArtifactNamespaceContext.INSTANCE);
ingo@52:             String label = XMLUtils.xpathString(
ingo@52:                 tmp, "@art:label", ArtifactNamespaceContext.INSTANCE);
ingo@2500:             String help = XMLUtils.xpathString(
ingo@2500:                 tmp, "@art:helpText", ArtifactNamespaceContext.INSTANCE);
ingo@34: 
ingo@51:             NodeList dataNodes = (NodeList) XMLUtils.xpath(
ingo@51:                 tmp,
ingo@51:                 XPATH_STATIC_DATA_NODE,
ingo@51:                 XPathConstants.NODESET,
ingo@51:                 ArtifactNamespaceContext.INSTANCE);
ingo@34: 
ingo@51:             if (dataNodes == null || dataNodes.getLength() == 0) {
ingo@51:                 continue;
ingo@51:             }
ingo@51: 
ingo@51:             int size      = dataNodes.getLength();
ingo@2500:             DataList list = new DataList(name, size, uiprovider, label, help);
ingo@51: 
ingo@51:             for (int j = 0; j < size; j++) {
ingo@51:                 Node dataNode = dataNodes.item(j);
ingo@51: 
ingo@1571:                 list.add(DataFactory.createDataFromElement((Element) dataNode));
ingo@51: 
ingo@51:                 data[i] = list;
ingo@51:             }
ingo@34:         }
ingo@34: 
ingo@34:         return data;
ingo@34:     }
ingo@34: 
ingo@34: 
ingo@34:     /**
ingo@22:      * This method extracts the UIProvider specified by the data node.
ingo@22:      *
ingo@22:      * @param data The data node.
ingo@22:      *
ingo@22:      * @return the UIProvider that is specified in the data node.
ingo@22:      */
ingo@51:     protected static String extractUIProvider(Node ui) {
ingo@22:         return (String) XMLUtils.xpath(
ingo@51:             ui,
ingo@22:             XPATH_UIPROVIDER,
ingo@22:             XPathConstants.STRING,
ingo@22:             ArtifactNamespaceContext.INSTANCE);
ingo@22:     }
ingo@32: 
ingo@32: 
ingo@32:     /**
ingo@2500:      * This method extracts the help text specified by the data node.
ingo@2500:      *
ingo@2500:      * @param ui The data node.
ingo@2500:      *
ingo@2500:      * @return the help text.
ingo@2500:      */
ingo@2500:     protected static String extractHelpText(Node ui) {
ingo@2500:         return (String) XMLUtils.xpath(
ingo@2500:             ui,
ingo@2500:             XPATH_HELP_TEXT,
ingo@2500:             XPathConstants.STRING,
ingo@2500:             ArtifactNamespaceContext.INSTANCE);
ingo@2500:     }
ingo@2500: 
ingo@2500: 
ingo@2500:     /**
ingo@32:      * This method extracts the reachable states of the current artifact.
ingo@32:      *
ingo@32:      * @param reachable The reachable states node.
ingo@32:      *
ingo@32:      * @return an array with identifiers of reachable states.
ingo@32:      */
ingo@32:     protected static String[] extractReachableStates(Node reachable) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractReachableStates()");
ingo@32: 
ingo@32:         NodeList list = (NodeList) XMLUtils.xpath(
ingo@32:             reachable,
ingo@32:             XPATH_REACHABLE_STATE,
ingo@32:             XPathConstants.NODESET,
ingo@32:             ArtifactNamespaceContext.INSTANCE);
ingo@32: 
ingo@32:         if (list == null || list.getLength() == 0) {
ingo@32:             return null;
ingo@32:         }
ingo@32: 
ingo@32:         int count = list.getLength();
ingo@32: 
ingo@32:         String[] states = new String[count];
ingo@32: 
ingo@32:         for (int i = 0; i < count; i++) {
ingo@32:             Node state = list.item(i);
ingo@32: 
ingo@32:             String name = XMLUtils.xpathString(
ingo@32:                 state, "@art:name", ArtifactNamespaceContext.INSTANCE);
ingo@32: 
ingo@32:             states[i] = name;
ingo@32:         }
ingo@32: 
ingo@32:         return states;
ingo@32:     }
ingo@65: 
ingo@65: 
ingo@65:     /**
ingo@65:      * This method extract available output modes of the the current artifact.
ingo@65:      *
ingo@65:      * @param outputs A list of nodes that contain information about output
ingo@65:      * modes.
ingo@65:      *
ingo@65:      * @return an array of Output modes.
ingo@65:      */
ingo@65:     protected static OutputMode[] extractOutputModes(NodeList outputs) {
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractOutputModes");
ingo@65: 
ingo@65:         if (outputs == null || outputs.getLength() == 0) {
ingo@65:             return null;
ingo@65:         }
ingo@65: 
ingo@65:         int size = outputs.getLength();
ingo@65: 
ingo@65:         List<OutputMode> outs = new ArrayList<OutputMode>(size);
ingo@65: 
ingo@65:         for (int i = 0; i < size; i++) {
ingo@65:             Node out = outputs.item(i);
ingo@65: 
ingo@65:             String name = XMLUtils.xpathString(
ingo@65:                 out, "@art:name", ArtifactNamespaceContext.INSTANCE);
ingo@65:             String desc = XMLUtils.xpathString(
ingo@65:                 out, "@art:description", ArtifactNamespaceContext.INSTANCE);
ingo@65:             String mimeType = XMLUtils.xpathString(
ingo@65:                 out, "@art:mime-type", ArtifactNamespaceContext.INSTANCE);
ingo@65: 
ingo@65:             if (name != null) {
ingo@65:                 outs.add(new DefaultOutputMode(name, desc, mimeType));
ingo@65:             }
ingo@65:             else {
ingo@1367:                 logger.debug("Found an invalid output mode.");
ingo@65:             }
ingo@65:         }
ingo@65: 
ingo@65:         return (OutputMode[]) outs.toArray(new OutputMode[size]);
ingo@65:     }
ingo@803: 
ingo@803: 
ingo@807:     protected static Recommendation[] extractRecommendedArtifacts(Document doc){
ingo@1367:         logger.debug("ArtifactDescriptionFactory.extractRecommendedArtifacts.");
ingo@803: 
ingo@803:         NodeList list = (NodeList) XMLUtils.xpath(
ingo@803:             doc,
ingo@803:             XPATH_RECOMMENDED_ARTIFACTS,
ingo@803:             XPathConstants.NODESET,
ingo@803:             ArtifactNamespaceContext.INSTANCE);
ingo@803: 
ingo@803:         int num = list != null ? list.getLength() : 0;
ingo@803: 
ingo@807:         Recommendation[] rec = new Recommendation[num];
ingo@803: 
ingo@803:         for (int i = 0; i < num; i++) {
ingo@807:             Element e       = (Element) list.item(i);
ingo@807:             String  factory = e.getAttribute("factory");
sascha@836:             String  index   = e.getAttribute("ids");
ingo@803: 
ingo@807:             if (factory != null && factory.length() > 0) {
sascha@839:                 rec[i] = new Recommendation(factory, index);
ingo@803:             }
ingo@803:         }
ingo@803: 
ingo@807:         return rec;
ingo@803:     }
ingo@16: }
ingo@16: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :