/**
* Import an XQuery library module from the given document. The namespace and preferred prefix of
* the module are extracted from the module itself. The MIME type of the document is set to
* "application/xquery" as a side-effect.
*
* @param module the non-XML document that holds the library module's source
* @return this service, to chain calls
* @throws DatabaseException if the module is an XML document, or the module declaration cannot be
* found at the top of the document
*/
public QueryService importModule(Document module) {
if (module instanceof XMLDocument)
throw new DatabaseException("module cannot be an XML document: " + module);
Matcher matcher = MODULE_DECLARATION_DQUOTE.matcher(module.contentsAsString());
if (!matcher.find()) {
matcher = MODULE_DECLARATION_SQUOTE.matcher(module.contentsAsString());
if (!matcher.find())
throw new DatabaseException("couldn't find a module declaration at the top of " + module);
}
module.metadata().setMimeType("application/xquery");
String moduleNamespace = matcher.group(1);
// TODO: should do URILiteral processing here to replace entity and character references and
// normalize
// whitespace, but since it seems that eXist doesn't do it either (bug?) there's no reason to
// rush.
Document prevModule = moduleMap.get(moduleNamespace);
if (prevModule != null && !prevModule.equals(module))
throw new DatabaseException(
"module "
+ moduleNamespace
+ " already bound to "
+ prevModule
+ ", can't rebind to "
+ module);
moduleMap.put(moduleNamespace, module);
return this;
}
private String presub(String query, Object[] params) {
if (params == null) return query;
StringBuffer buf = new StringBuffer();
Matcher matcher = PRE_SUB_PATTERN.matcher(query);
while (matcher.find()) {
matcher.appendReplacement(
buf,
((String) params[Integer.parseInt(matcher.group(1)) - 1])
.replace("\\", "\\\\")
.replace("$", "\\$"));
}
matcher.appendTail(buf);
return buf.toString();
}