/** * Serialize a single schema (namespace) registry entry * * @param xmlSerializer XML serializer * @param mdSchema DSpace metadata schema * @throws SAXException if XML error * @throws RegistryExportException if export error */ private static void saveSchema(XMLSerializer xmlSerializer, MetadataSchema mdSchema) throws SAXException, RegistryExportException { // If we haven't got a schema, it's an error if (mdSchema == null) { throw new RegistryExportException("no schema to export"); } String name = mdSchema.getName(); String namespace = mdSchema.getNamespace(); if (name == null || "".equals(name)) { System.out.println("name is null, skipping"); return; } if (namespace == null || "".equals(namespace)) { System.out.println("namespace is null, skipping"); return; } // Output the parent tag xmlSerializer.startElement("dc-schema", null); // Output the schema name xmlSerializer.startElement("name", null); xmlSerializer.characters(name.toCharArray(), 0, name.length()); xmlSerializer.endElement("name"); // Output the schema namespace xmlSerializer.startElement("namespace", null); xmlSerializer.characters(namespace.toCharArray(), 0, namespace.length()); xmlSerializer.endElement("namespace"); xmlSerializer.endElement("dc-schema"); }
/** * Serialize a single metadata field registry entry to xml * * @param context DSpace context * @param xmlSerializer xml serializer * @param mdField DSpace metadata field * @throws SAXException if XML error * @throws RegistryExportException if export error * @throws SQLException if database error * @throws IOException if IO error */ private static void saveType(Context context, XMLSerializer xmlSerializer, MetadataField mdField) throws SAXException, RegistryExportException, SQLException, IOException { // If we haven't been given a field, it's an error if (mdField == null) { throw new RegistryExportException("no field to export"); } // Get the data from the metadata field String schemaName = getSchemaName(context, mdField); String element = mdField.getElement(); String qualifier = mdField.getQualifier(); String scopeNote = mdField.getScopeNote(); // We must have a schema and element if (schemaName == null || element == null) { throw new RegistryExportException("incomplete field information"); } // Output the parent tag xmlSerializer.startElement("dc-type", null); // Output the schema name xmlSerializer.startElement("schema", null); xmlSerializer.characters(schemaName.toCharArray(), 0, schemaName.length()); xmlSerializer.endElement("schema"); // Output the element xmlSerializer.startElement("element", null); xmlSerializer.characters(element.toCharArray(), 0, element.length()); xmlSerializer.endElement("element"); // Output the qualifier, if present if (qualifier != null) { xmlSerializer.startElement("qualifier", null); xmlSerializer.characters(qualifier.toCharArray(), 0, qualifier.length()); xmlSerializer.endElement("qualifier"); } else { xmlSerializer.comment("unqualified"); } // Output the scope note, if present if (scopeNote != null) { xmlSerializer.startElement("scope_note", null); xmlSerializer.characters(scopeNote.toCharArray(), 0, scopeNote.length()); xmlSerializer.endElement("scope_note"); } else { xmlSerializer.comment("no scope note"); } xmlSerializer.endElement("dc-type"); }
/** * Save a registry to a filepath * * @param file filepath * @param schema schema definition to save * @throws SQLException if database error * @throws IOException if IO error * @throws SAXException if XML error * @throws RegistryExportException if export error */ public static void saveRegistry(String file, String schema) throws SQLException, IOException, SAXException, RegistryExportException { // create a context Context context = new Context(); context.setIgnoreAuthorization(true); OutputFormat xmlFormat = new OutputFormat(Method.XML, "UTF-8", true); xmlFormat.setLineWidth(120); xmlFormat.setIndent(4); XMLSerializer xmlSerializer = new XMLSerializer(new BufferedWriter(new FileWriter(file)), xmlFormat); // XMLSerializer xmlSerializer = new XMLSerializer(System.out, xmlFormat); xmlSerializer.startDocument(); xmlSerializer.startElement("dspace-dc-types", null); // Save the schema definition(s) saveSchema(context, xmlSerializer, schema); List<MetadataField> mdFields = null; // If a single schema has been specified if (schema != null && !"".equals(schema)) { // Get the id of that schema MetadataSchema mdSchema = metadataSchemaService.find(context, schema); if (mdSchema == null) { throw new RegistryExportException("no schema to export"); } // Get the metadata fields only for the specified schema mdFields = metadataFieldService.findAllInSchema(context, mdSchema); } else { // Get the metadata fields for all the schemas mdFields = metadataFieldService.findAll(context); } // Output the metadata fields for (MetadataField mdField : mdFields) { saveType(context, xmlSerializer, mdField); } xmlSerializer.endElement("dspace-dc-types"); xmlSerializer.endDocument(); // abort the context, as we shouldn't have changed it!! context.abort(); }
public void endElement(String tagName) throws SAXException { endElement(null, null, tagName); }