/**
* Construct the xml response on the server-side.
*
* @param context the servlet context
* @param request the servlet request
* @return a String containing the XML response
* @throws OAIInternalServerError an http 500 status error occurred
*/
public static String construct(
HashMap context,
HttpServletRequest request,
HttpServletResponse response,
Transformer serverTransformer)
throws OAIInternalServerError, TransformerException {
Properties properties = (Properties) context.get("OAIHandler.properties");
AbstractCatalog abstractCatalog = (AbstractCatalog) context.get("OAIHandler.catalog");
String baseURL = properties.getProperty("OAIHandler.baseURL");
if (baseURL == null) {
try {
baseURL = request.getRequestURL().toString();
} catch (java.lang.NoSuchMethodError f) {
baseURL = request.getRequestURL().toString();
}
}
StringBuilder sb = new StringBuilder();
String identifier = request.getParameter("identifier");
String metadataPrefix = request.getParameter("metadataPrefix");
LOGGER.debug("GetRecord.constructGetRecord: identifier=" + identifier);
LOGGER.debug("GetRecord.constructGetRecord: metadataPrefix=" + metadataPrefix);
sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
String styleSheet = properties.getProperty("OAIHandler.styleSheet");
if (styleSheet != null) {
sb.append("<?xml-stylesheet type=\"text/xsl\" href=\"");
sb.append(styleSheet);
sb.append("\"?>");
}
sb.append("<OAI-PMH xmlns=\"http://www.openarchives.org/OAI/2.0/\"");
sb.append(" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"");
String extraXmlns = properties.getProperty("OAIHandler.extraXmlns");
if (extraXmlns != null) {
sb.append(" ").append(extraXmlns);
}
sb.append(" xsi:schemaLocation=\"http://www.openarchives.org/OAI/2.0/");
sb.append(" http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd\">");
sb.append("<responseDate>");
sb.append(createResponseDate(new Date()));
sb.append("</responseDate>");
Crosswalks crosswalks = abstractCatalog.getCrosswalks();
try {
if (metadataPrefix == null
|| metadataPrefix.length() == 0
|| identifier == null
|| identifier.length() == 0
|| hasBadArguments(request, validParamNames.iterator(), validParamNames)) {
throw new BadArgumentException();
} else if (!crosswalks.containsValue(metadataPrefix)) {
throw new CannotDisseminateFormatException(metadataPrefix);
} else {
String record = abstractCatalog.getRecord(identifier, metadataPrefix);
if (record != null) {
sb.append(getRequestElement(request, validParamNames, baseURL));
sb.append("<GetRecord>");
sb.append(record);
sb.append("</GetRecord>");
} else {
throw new IdDoesNotExistException(identifier);
}
}
} catch (BadArgumentException e) {
sb.append("<request verb=\"GetRecord\">");
sb.append(baseURL);
sb.append("</request>");
sb.append(e.getMessage());
} catch (CannotDisseminateFormatException e) {
sb.append(getRequestElement(request, validParamNames, baseURL));
sb.append(e.getMessage());
} catch (IdDoesNotExistException e) {
sb.append(getRequestElement(request, validParamNames, baseURL));
sb.append(e.getMessage());
}
sb.append("</OAI-PMH>");
return render(response, "text/xml; charset=UTF-8", sb.toString(), serverTransformer);
}
