Example usage for javax.xml.parsers SAXParserFactory newInstance

Introduction

In this page you can find the example usage for javax.xml.parsers SAXParserFactory newInstance.

Prototype

public static SAXParserFactory newInstance(String factoryClassName, ClassLoader classLoader) 

Source Link

Document

Obtain a new instance of a SAXParserFactory from class name.

Usage

From source file:com.silverpeas.importExport.control.ImportExport.java

/**
 * Mthode retournant l'arbre des objets mapps sur le fichier xml pass en paramtre.
 *
 * @param xmlFileName le fichier xml interprt par Castor
 * @return Un objet SilverPeasExchangeType contenant le mapping d'un fichier XML Castor
 * @throws ImportExportException//ww  w .j  a va  2s  . com
 */
SilverPeasExchangeType loadSilverpeasExchange(String xmlFileName) throws ImportExportException {
    SilverTrace.debug("importExport", "ImportExportSessionController.loadSilverpeasExchange",
            "root.MSG_GEN_ENTER_METHOD", "xmlFileName = " + xmlFileName);

    try {
        InputSource xmlInputSource = new InputSource(xmlFileName);
        String xsdPublicId = settings.getString("xsdPublicId");
        String xsdSystemId = settings.getString("xsdDefaultSystemId");

        // Load and parse default XML schema for import/export
        SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema",
                "com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory", null);
        Schema schema = schemaFactory.newSchema(new StreamSource(xsdSystemId));

        // Create an XML parser for loading XML import file
        SAXParserFactory factory = SAXParserFactory
                .newInstance("com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl", null);
        factory.setValidating(false);
        factory.setNamespaceAware(true);
        factory.setSchema(schema);
        SAXParser parser = factory.newSAXParser();

        // First try to determine to load the XML file using the default
        // XML-Schema
        ImportExportErrorHandler errorHandler = new ImportExportErrorHandler();
        XMLReader xmlReader = parser.getXMLReader();
        xmlReader.setErrorHandler(errorHandler);

        try {
            xmlReader.parse(xmlInputSource);

        } catch (SAXException ex) {
            SilverTrace.debug("importExport", "ImportExportSessionController.loadSilverpeasExchange",
                    "root.MSG_GEN_PARAM_VALUE", (new StringBuilder("XML File ")).append(xmlFileName)
                            .append(" is not valid according to default schema").toString());

            // If case the default schema is not the one specified by the
            // XML import file, try to get the right XML-schema and
            // namespace (this is done by parsing without validation)
            ImportExportNamespaceHandler nsHandler = new ImportExportNamespaceHandler();
            factory.setSchema(null);
            parser = factory.newSAXParser();
            xmlReader = parser.getXMLReader();
            xmlReader.setContentHandler(nsHandler);
            xmlReader.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
            xmlReader.parse(xmlInputSource);

            // If OK, extract the name and location of the schema
            String nsSpec = nsHandler.getNsSpec();
            if (nsSpec == null || xsdPublicId.equals(nsSpec)) {
                throw ex;
            }

            String nsVersion = extractUriNameIndex(nsSpec);
            if (nsVersion.length() == 0) {
                throw ex;
            }

            String altXsdSystemId = settings.getStringWithParam("xsdSystemId", nsVersion);
            if ((altXsdSystemId == null) || (altXsdSystemId.equals(xsdSystemId))) {
                throw ex;
            }

            SilverTrace.debug("importExport", "ImportExportSessionController.loadSilverpeasExchange",
                    "root.MSG_GEN_PARAM_VALUE",
                    (new StringBuilder("Trying again using schema specification located at "))
                            .append(altXsdSystemId).toString());

            // Try again to load, parse and validate the XML import file,
            // using the new schema specification
            schema = schemaFactory.newSchema(new StreamSource(altXsdSystemId));
            factory.setSchema(schema);
            parser = factory.newSAXParser();
            xmlReader = parser.getXMLReader();
            xmlReader.setErrorHandler(errorHandler);
            xmlReader.parse(xmlInputSource);
        }

        SilverTrace.debug("importExport", "ImportExportSessionController.loadSilverpeasExchange",
                "root.MSG_GEN_PARAM_VALUE", "XML Validation complete");

        // Mapping file for Castor
        String mappingDir = settings.getString("mappingDir");
        String mappingFileName = settings.getString("importExportMapping");
        String mappingFile = mappingDir + mappingFileName;
        Mapping mapping = new Mapping();

        // Load mapping and instantiate a Unmarshaller
        mapping.loadMapping(mappingFile);
        Unmarshaller unmar = new Unmarshaller(SilverPeasExchangeType.class);
        unmar.setMapping(mapping);
        unmar.setValidation(false);

        // Unmarshall the process model
        SilverPeasExchangeType silverpeasExchange = (SilverPeasExchangeType) unmar.unmarshal(xmlInputSource);
        SilverTrace.debug("importExport", "ImportExportSessionController.loadSilverpeasExchange",
                "root.MSG_GEN_PARAM_VALUE", "Unmarshalling complete");
        return silverpeasExchange;

    } catch (MappingException me) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange",
                "importExport.EX_LOADING_XML_MAPPING_FAILED",
                "XML Filename " + xmlFileName + ": " + me.getLocalizedMessage(), me);
    } catch (MarshalException me) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange",
                "importExport.EX_UNMARSHALLING_FAILED",
                "XML Filename " + xmlFileName + ": " + me.getLocalizedMessage(), me);
    } catch (ValidationException ve) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange", "importExport.EX_PARSING_FAILED",
                "XML Filename " + xmlFileName + ": " + ve.getLocalizedMessage(), ve);
    } catch (IOException ioe) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange",
                "importExport.EX_LOADING_XML_MAPPING_FAILED",
                "XML Filename " + xmlFileName + ": " + ioe.getLocalizedMessage(), ioe);
    } catch (ParserConfigurationException ex) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange", "importExport.EX_PARSING_FAILED",
                "XML Filename " + xmlFileName + ": " + ex.getLocalizedMessage(), ex);
    } catch (SAXNotRecognizedException snre) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange", "importExport.EX_PARSING_FAILED",
                "XML Filename " + xmlFileName + ": " + snre.getLocalizedMessage(), snre);
    } catch (SAXNotSupportedException snse) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange", "importExport.EX_PARSING_FAILED",
                "XML Filename " + xmlFileName + ": " + snse.getLocalizedMessage(), snse);
    } catch (SAXException se) {
        throw new ImportExportException("ImportExport.loadSilverpeasExchange", "importExport.EX_PARSING_FAILED",
                "XML Filename " + xmlFileName + ": " + se.getLocalizedMessage(), se);
    }
}

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