public static Descriptor buildDescriptor()

in core/servicemix-core/src/main/java/org/apache/servicemix/jbi/deployment/DescriptorFactory.java [96:144]
46 lines of code
6 McCabe index (conditional complexity)

    public static Descriptor buildDescriptor(final URL url) {
        try {
            // Read descriptor
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            FileUtil.copyInputStream(url.openStream(), baos);
            // Validate descriptor
            SchemaFactory schemaFactory = SchemaFactory.newInstance(XSD_SCHEMA_LANGUAGE);
            Schema schema = schemaFactory.newSchema(DescriptorFactory.class.getResource("/jbi-descriptor.xsd"));
            Validator validator = schema.newValidator();
            validator.setErrorHandler(new ErrorHandler() {
                public void warning(SAXParseException exception) throws SAXException {
                    LOGGER.debug("Validation warning on {}", url, exception);
                }
                public void error(SAXParseException exception) throws SAXException {
                    LOGGER.info("Validation error on {}", url, exception);
                }
                public void fatalError(SAXParseException exception) throws SAXException {
                    throw exception;
                }
            });
            validator.validate(new StreamSource(new ByteArrayInputStream(baos.toByteArray())));
            // Parse descriptor
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            factory.setNamespaceAware(true);
            DocumentBuilder docBuilder = factory.newDocumentBuilder();
            Document doc = docBuilder.parse(new ByteArrayInputStream(baos.toByteArray()));
            Element jbi = doc.getDocumentElement();
            Descriptor desc = new Descriptor();
            desc.setVersion(Double.parseDouble(getAttribute(jbi, "version")));
            Element child = DOMUtil.getFirstChildElement(jbi);
            if ("component".equals(child.getLocalName())) {
                Component component = parseComponent(child);
                desc.setComponent(component);
            } else if ("shared-library".equals(child.getLocalName())) {
                SharedLibrary sharedLibrary = parseSharedLibrary(child);
                desc.setSharedLibrary(sharedLibrary);
            } else if ("service-assembly".equals(child.getLocalName())) {
                ServiceAssembly serviceAssembly = parseServiceAssembly(child);
                desc.setServiceAssembly(serviceAssembly);
            } else if ("services".equals(child.getLocalName())) {
                Services services = parseServiceUnit(child);
                desc.setServices(services);
            }
            checkDescriptor(desc);
            return desc;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }