public VaultContentXmlReader()

in src/main/java/org/apache/sling/scriptingbundle/plugin/processor/filevault/VaultContentXmlReader.java [71:124]
49 lines of code
12 McCabe index (conditional complexity)

    public VaultContentXmlReader(@NotNull Path path) throws IOException {
        this.path = path;
        this.requiredResourceTypes = new HashSet<>();
        try (BufferedReader reader = Files.newBufferedReader(path, StandardCharsets.UTF_8)) {
            DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
            Document document = documentBuilder.parse(new InputSource(reader));
            NodeList nodeList = document.getElementsByTagNameNS(NameConstants.JCR_ROOT.getNamespaceURI(),
                    NameConstants.JCR_ROOT.getLocalName());
            if (nodeList.getLength() == 1 && nodeList.item(0).equals(document.getDocumentElement())) {
                String resourceSuperTypeRawValue = document.getDocumentElement().getAttributeNS(JcrResourceConstants.SLING_NAMESPACE_URI,
                        Constants.SLING_RESOURCE_SUPER_TYPE_XML_LOCAL_NAME);
                if (StringUtils.isNotEmpty(resourceSuperTypeRawValue)) {
                    DocViewProperty resourceSuperTypeDocViewProperty =
                            DocViewProperty.parse(JcrResourceConstants.SLING_RESOURCE_SUPER_TYPE_PROPERTY, resourceSuperTypeRawValue);
                    if ((resourceSuperTypeDocViewProperty.type == PropertyType.STRING ||
                            resourceSuperTypeDocViewProperty.type == PropertyType.UNDEFINED) && !resourceSuperTypeDocViewProperty.isMulti) {
                        this.resourceSuperType = resourceSuperTypeDocViewProperty.values[0];
                    } else {
                        throw new IllegalArgumentException(String.format("Invalid %s property value (%s) in file %s.",
                                JcrResourceConstants.SLING_RESOURCE_SUPER_TYPE_PROPERTY, resourceSuperTypeRawValue, path));
                    }
                } else {
                    this.resourceSuperType = null;
                }

                String requiredResourceTypesRawValue =
                        document.getDocumentElement().getAttributeNS(JcrResourceConstants.SLING_NAMESPACE_URI
                                , Constants.SLING_REQUIRED_RESOURCE_TYPES_XML_LOCAL_NAME);
                if (StringUtils.isNotEmpty(requiredResourceTypesRawValue)) {
                    DocViewProperty requiredResourceTypesDocViewProperty =
                            DocViewProperty.parse(Constants.SLING_REQUIRED_RESOURCE_TYPES,
                                    requiredResourceTypesRawValue);
                    if (requiredResourceTypesDocViewProperty.isMulti &&
                            (requiredResourceTypesDocViewProperty.type == PropertyType.STRING ||
                                    requiredResourceTypesDocViewProperty.type == PropertyType.UNDEFINED)) {
                        requiredResourceTypes.addAll(Arrays.asList(requiredResourceTypesDocViewProperty.values));
                    } else {
                       throw new IllegalArgumentException(String.format("Invalid %s property value (%s) in file %s.",
                                Constants.SLING_REQUIRED_RESOURCE_TYPES, requiredResourceTypesRawValue, path));
                    }
                }


            } else {
                throw new IllegalArgumentException(String.format(
                        "Path %s does not seem to provide a Docview format - https://jackrabbit.apache.org/filevault/docview.html.",
                        path));
            }
        } catch (ParserConfigurationException | SAXException e) {
            throw new IOException(e);
        }


    }