Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/DataFactory.java @ 1595:e53d773e6992
Display inserted W/Q values in WQSimpleArrayPanel.
flys-client/trunk@3908 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 03 Feb 2012 15:27:46 +0000 |
parents | dbdf954dbe94 |
children | 6a65694bdcc2 |
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package de.intevation.flys.client.server; import javax.xml.xpath.XPathConstants; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import org.apache.log4j.Logger; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.flys.client.shared.model.Data; import de.intevation.flys.client.shared.model.DataItem; import de.intevation.flys.client.shared.model.DefaultData; import de.intevation.flys.client.shared.model.DefaultDataItem; import de.intevation.flys.client.shared.model.DoubleArrayData; import de.intevation.flys.client.shared.model.IntegerArrayData; import de.intevation.flys.client.shared.model.IntegerData; import de.intevation.flys.client.shared.model.IntegerOptionsData; import de.intevation.flys.client.shared.model.IntegerRangeData; import de.intevation.flys.client.shared.model.StringData; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class DataFactory { private static final Logger logger = Logger.getLogger(DataFactory.class); public static final String NS_URI = ArtifactNamespaceContext.NAMESPACE_URI; /** * Creates a new Data instance based on the <i>art:type</i> attribute of * <i>element</i>. * * @param element The Data element. * * @return a Data instance. */ public static Data createDataFromElement(Element element) { String name = element.getAttributeNS(NS_URI, "name"); String type = element.getAttributeNS(NS_URI, "type"); try { logger.debug("Create Data instance for: " + name + " | " + type); if (type == null || type.length() == 0) { return createDefaultData(element, name); } type = type.toLowerCase(); if (type.equals(StringData.TYPE)) { return createStringData(element, name); } else if (type.equals(IntegerData.TYPE)) { return createIntegerData(element, name); } else if (type.equals(IntegerOptionsData.TYPE)) { return createIntegerOptionsData(element, name); } else if (type.equals(IntegerRangeData.TYPE)) { return createIntegerRangeData(element, name); } else if (type.equals(IntegerArrayData.TYPE)) { return createIntegerArrayData(element, name); } else if (type.equals(DoubleArrayData.TYPE)) { return createDoubleArrayData(element, name); } else { return createDefaultData(element, name); } } catch (Exception e) { logger.error("Error while data creation for: " + name); } return null; } /** * This method creates a new instance of DefaultData which has no real type * set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of DefaultData. */ protected static Data createDefaultData(Element ele, String name) { logger.debug("Create new DefaultData"); return new DefaultData(name, name, "default", extractDataItems(ele)); } /** * This method creates a new instance of StringData which has a type * "string" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of StringData. */ protected static Data createStringData(Element ele, String name) { return new StringData(name, name, extractDataItems(ele)); } /** * This method creates a new instance of DefaultData which has a type * "integer" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of IntegerData. */ protected static Data createIntegerData(Element ele, String name) { return new IntegerData(name, name, extractDataItems(ele)); } /** * This method creates a new instance of DefaultData which has a type * "intoptions" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of IntegerOptionsData. */ protected static Data createIntegerOptionsData(Element ele, String name) { return new IntegerOptionsData(name, name, extractDataItems(ele)); } /** * This method creates a new instance of DefaultData which has a type * "intrange" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of IntegerRangeData. */ protected static Data createIntegerRangeData(Element ele, String name) { DataItem[] items = extractDataItems(ele); String rawValue = items[0].getStringValue(); String[] minmax = rawValue.split(";"); return new IntegerRangeData( name, name, Integer.valueOf(minmax[0]), Integer.valueOf(minmax[1])); } /** * This method creates a new instance of DefaultData which has a type * "integerarray" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of IntegerArrayData. */ protected static Data createIntegerArrayData(Element ele, String name) { DataItem[] items = extractDataItems(ele); String rawValue = items[0].getStringValue(); String[] values = rawValue.split(";"); int[] integers = new int[values.length]; for (int i = 0; i < values.length; i++) { try { integers[i] = Integer.valueOf(values[i]); } catch (NumberFormatException nfe) { logger.warn("Error while parsing IntegerArrayData: " + nfe); } } return new IntegerArrayData(name, items[0].getLabel(), integers); } /** * This method creates a new instance of DefaultData which has a type * "doublearray" set. * * @param ele The Data element. * @param name The name of the Data instance. * * @return an instance of DoubleArrayData. */ protected static Data createDoubleArrayData(Element ele, String name) { DataItem[] items = extractDataItems(ele); String rawValue = items[0].getStringValue(); String[] values = rawValue.split(";"); double[] doubles = new double[values.length]; for (int i = 0; i < values.length; i++) { try { doubles[i] = Double.valueOf(values[i]); } catch (NumberFormatException nfe) { logger.warn("Error while parsing DoubleArrayData: " + nfe); } } return new DoubleArrayData(name, items[0].getLabel(), doubles); } /** * This method extracts the art:item elements placed under <i>elements</i>. * * @param element A data node that contains items. * * @return a list of DataItems. */ protected static DataItem[] extractDataItems(Element element) { NodeList itemList = (NodeList) XMLUtils.xpath( element, "art:item", XPathConstants.NODESET, ArtifactNamespaceContext.INSTANCE); if (itemList == null || itemList.getLength() == 0) { logger.debug("No old data items found."); return null; } int count = itemList.getLength(); DataItem[] items = new DataItem[count]; for (int i = 0; i < count; i++) { Element tmp = (Element) itemList.item(i); String value = tmp.getAttributeNS(NS_URI, "value"); String label = tmp.getAttributeNS(NS_URI, "label"); items[i] = new DefaultDataItem(label, label, value); } return items; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :