String qb = "PREFIX dc: <http://purl.org/dc/elements/1.1/>\n" +
"INSERT DATA\n" +
"{ \n" +
" <http://example/book1> dc:title \"A new book\" ;\n" +
" dc:creator \"A.N.Other\" .\n" +
"}";
// Here I need to check what type of query I got
String type = ... //some code for checking
if (type == "select") {
ParsedTupleQuery q = (ParsedTupleQuery)parser.parseQuery(qb, null);
}else if(type == "costruct") {
ParsedGraphQuery q = (ParsedGraphQuery)parser.parseQuery(qb, null);
}else if(type == "update"){ //here can be insert or delete
ParsedUpdate q = parser.parseUpdate(qb, null);
}
I can't find a way to find out what type of query it is. Maybe somebody's ever seen it before?
Rdf4j has a QueryParserUtil
with a convenience method for this. You can use it as follows:
ParsedOperation operation = QueryParserUtil.parseOperation(QueryLanguage.SPARQL, qb, null);
if (operation instanceof ParsedTupleQuery) {
ParsedTupleQuery q = (ParsedTupleQuery)operation;
...
} else if (operation instanceof ParsedGraphQuery) {
ParsedGraphQuery q = (ParsedGraphQuery)operation;
...
} else if (operation instance ParsedUpdate) {
ParsedUpdate u = (ParsedUpdate)operation;
...
}