| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jena.sparql.lang; |
| |
| import java.io.Reader ; |
| import java.io.StringReader ; |
| |
| import org.apache.jena.atlas.logging.Log ; |
| import org.apache.jena.query.Query ; |
| import org.apache.jena.query.QueryException ; |
| import org.apache.jena.query.QueryParseException ; |
| import org.apache.jena.query.Syntax ; |
| import org.apache.jena.shared.JenaException ; |
| import org.apache.jena.sparql.lang.arq.ARQParser ; |
| import org.apache.jena.sparql.syntax.Element ; |
| import org.apache.jena.sparql.syntax.Template ; |
| |
| |
| public class ParserARQ extends SPARQLParser |
| { |
| private interface Action { void exec(ARQParser parser) throws Exception ; } |
| |
| @Override |
| protected Query parse$(final Query query, String queryString) |
| { |
| query.setSyntax(Syntax.syntaxARQ) ; |
| |
| Action action = new Action() { |
| @Override |
| public void exec(ARQParser parser) throws Exception |
| { |
| parser.QueryUnit() ; |
| } |
| } ; |
| |
| perform(query, queryString, action) ; |
| return query ; |
| } |
| |
| public static Element parseElement(String string) |
| { |
| final Query query = new Query () ; |
| Action action = new Action() { |
| @Override |
| public void exec(ARQParser parser) throws Exception |
| { |
| Element el = parser.GroupGraphPattern() ; |
| query.setQueryPattern(el) ; |
| } |
| } ; |
| perform(query, string, action) ; |
| return query.getQueryPattern() ; |
| } |
| |
| public static Template parseTemplate(String string) |
| { |
| final Query query = new Query () ; |
| Action action = new Action() { |
| @Override |
| public void exec(ARQParser parser) throws Exception |
| { |
| Template t = parser.ConstructTemplate() ; |
| query.setConstructTemplate(t) ; |
| } |
| } ; |
| perform(query, string, action) ; |
| return query.getConstructTemplate() ; |
| } |
| |
| |
| // All throwable handling. |
| private static void perform(Query query, String string, Action action) |
| { |
| Reader in = new StringReader(string) ; |
| ARQParser parser = new ARQParser(in) ; |
| |
| try { |
| query.setStrict(true) ; |
| parser.setQuery(query) ; |
| action.exec(parser) ; |
| } |
| catch (org.apache.jena.sparql.lang.arq.ParseException ex) |
| { |
| throw new QueryParseException(ex.getMessage(), |
| ex.currentToken.beginLine, |
| ex.currentToken.beginColumn |
| ) ; } |
| catch (org.apache.jena.sparql.lang.arq.TokenMgrError tErr) |
| { |
| // Last valid token : not the same as token error message - but this should not happen |
| int col = parser.token.endColumn ; |
| int line = parser.token.endLine ; |
| throw new QueryParseException(tErr.getMessage(), line, col) ; } |
| |
| catch (QueryException ex) { throw ex ; } |
| catch (JenaException ex) { throw new QueryException(ex.getMessage(), ex) ; } |
| catch (Error err) |
| { |
| // The token stream can throw errors. |
| throw new QueryParseException(err.getMessage(), err, -1, -1) ; |
| } |
| catch (Throwable th) |
| { |
| Log.warn(ParserSPARQL11.class, "Unexpected throwable: ",th) ; |
| throw new QueryException(th.getMessage(), th) ; |
| } |
| } |
| } |