Mercurial > dive4elements > gnv-client
view gnv-artifacts/src/main/java/de/intevation/gnv/utils/ArtifactXMLUtilities.java @ 733:18dc6a99f4f4
Fixed NPE will using StateBase without a given Query.
gnv-artifacts/trunk@771 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 15 Mar 2010 12:34:40 +0000 |
parents | dde7f51dbe1e |
children | 9a828e5a2390 |
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package de.intevation.gnv.utils; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.Serializable; import java.io.StringWriter; import java.io.UnsupportedEncodingException; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.TransformerFactoryConfigurationError; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.xml.sax.SAXException; import de.intevation.artifacts.ArtifactNamespaceContext; /** * @author Tim Englich <tim.englich@intevation.de> * */ public class ArtifactXMLUtilities implements Serializable { /** * */ private static final long serialVersionUID = -6236340358303411758L; /** * the logger, used to log exceptions and additonaly information */ private static Logger log = Logger .getLogger(ArtifactXMLUtilities.class); public static final String XFORM_URL = "http://www.w3.org/2002/xforms"; public static final String XFORM_PREFIX = "xform"; /** * Constructor */ public ArtifactXMLUtilities() { } /** * @param document * @return */ public static Element createArtifactElement(Document document, String name) { Element node = document.createElementNS( ArtifactNamespaceContext.NAMESPACE_URI, name); node.setPrefix(ArtifactNamespaceContext.NAMESPACE_PREFIX); return node; } public static String writeDocument2String(Document document) { try { TransformerFactory transformerFactory = TransformerFactory .newInstance(); Transformer transformer = transformerFactory.newTransformer(); DOMSource source = new DOMSource(document); StringWriter sw = new StringWriter(); StreamResult result = new StreamResult(sw); transformer.transform(source, result); return sw.getBuffer().toString(); } catch (TransformerConfigurationException e) { log.error(e, e); } catch (TransformerFactoryConfigurationError e) { log.error(e, e); } catch (TransformerException e) { log.error(e, e); } return null; } public static Document readDocument(InputStream inputStream) { Document returnValue = null; try { DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory .newInstance(); DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder(); returnValue = docBuilder.parse(inputStream); } catch (ParserConfigurationException e) { log.error(e, e); } catch (SAXException e) { log.error(e, e); } catch (IOException e) { log.error(e, e); } return returnValue; } public Document reInitDocument(Document document) { try { byte[] barray = this.writeDocument2String(document).getBytes( "UTF-8"); InputStream inputStream = new ByteArrayInputStream(barray); return this.readDocument(inputStream); } catch (UnsupportedEncodingException e) { log.error(e, e); } return document; } public static Element createXFormElement(Document document, String name) { Element node = document.createElementNS(XFORM_URL, name); node.setPrefix(XFORM_PREFIX); return node; } public static Document createExceptionReport(String message, Document document) { log.debug("ArtifactXMLUtilities.createExceptionReport"); Element exceptionReportNode = createArtifactElement(document, "exceptionreport"); document.appendChild(exceptionReportNode); Element exceptionNode = createArtifactElement(document, "exception"); exceptionNode.setTextContent(message); exceptionReportNode.appendChild(exceptionNode); return document; } public static Document createInputExceptionReport(String msg, Document doc) { Element exceptionReportNode = createArtifactElement( doc,"exceptionreport"); Element exceptionNode = createArtifactElement( doc,"exception"); Element inputNode = createArtifactElement( doc, "input"); inputNode.setTextContent(msg); exceptionNode.appendChild(inputNode); exceptionReportNode.appendChild(exceptionNode); doc.appendChild(exceptionReportNode); return doc; } public static Document createSuccessReport(String message, Document document) { log.debug("ArtifactXMLUtilities.creatSuccessReport"); Element reportNode = createArtifactElement(document, "result"); document.appendChild(reportNode); Element successNode = createArtifactElement(document, "success"); successNode.setTextContent(message); reportNode.appendChild(successNode); return document; } public Node readConfiguration(String fileName){ try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(false); return factory.newDocumentBuilder().parse(fileName).getChildNodes().item(0); } catch (SAXException e) { log.error(e,e); return null; } catch (IOException e) { log.error(e,e); return null; } catch (ParserConfigurationException e) { log.error(e,e); return null; } } }