private org.exist.source.Source buildQuerySource(String query, Object[] params, String cookie) {
Map<String, String> combinedMap = namespaceBindings.getCombinedMap();
for (Map.Entry<String, Document> entry : moduleMap.entrySet()) {
combinedMap.put("<module> " + entry.getKey(), entry.getValue().path());
}
for (Map.Entry<QName, Object> entry : bindings.entrySet()) {
combinedMap.put(
"<var> " + entry.getKey(),
null); // don't care about values, as long as the same vars are bound
}
combinedMap.put("<posvars> " + params.length, null);
combinedMap.put("<cookie>", cookie);
// TODO: should include statically known documents and baseURI too?
return new StringSourceWithMapKey(query, combinedMap);
}
/**
* 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;
}
synchronized Entry get(String query) {
Entry entry = entries.get(query);
if (entry == null) entries.put(query, entry = new Entry(query));
return entry;
}
/**
* Bind a variable to the given value within all query expression evaluated subsequently.
*
* @param variableName the qualified name of the variable to bind
* @param value the value the variable should take
* @return this service, to chain calls
*/
public QueryService let(QName variableName, Object value) {
bindings.put(variableName, value);
return this;
}