001/* 002 * Licensed to DuraSpace under one or more contributor license agreements. 003 * See the NOTICE file distributed with this work for additional information 004 * regarding copyright ownership. 005 * 006 * DuraSpace licenses this file to you under the Apache License, 007 * Version 2.0 (the "License"); you may not use this file except in 008 * compliance with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.fcrepo.http.commons.exceptionhandlers; 019 020import static javax.ws.rs.core.Response.status; 021import static javax.ws.rs.core.Response.Status.BAD_REQUEST; 022import static org.slf4j.LoggerFactory.getLogger; 023 024import java.util.regex.Matcher; 025import java.util.regex.Pattern; 026 027import javax.ws.rs.core.Response; 028import javax.ws.rs.ext.ExceptionMapper; 029import javax.ws.rs.ext.Provider; 030 031import org.slf4j.Logger; 032 033import org.apache.jena.query.QueryParseException; 034 035 036/** 037 * Handles Sparql query parsing exceptions thrown when querying or updating. 038 * 039 * @author whikloj 040 * @since September 9, 2014 041 */ 042@Provider 043public class QueryParseExceptionMapper implements 044 ExceptionMapper<QueryParseException>, ExceptionDebugLogging { 045 046 private static final Logger LOGGER = getLogger(QueryParseExceptionMapper.class); 047 048 @Override 049 public Response toResponse(final QueryParseException e) { 050 051 LOGGER.error("Captured a query parse exception {}", e.getMessage()); 052 debugException(this, e, LOGGER); 053 if (e.getMessage().matches(".* Unresolved prefixed name: .*")) { 054 final Pattern namespacePattern = 055 Pattern.compile("Unresolved prefixed name: (\\w+:\\w+)"); 056 final Matcher namespaceMatch = 057 namespacePattern.matcher(e.getMessage()); 058 if (namespaceMatch.find()) { 059 final String msg = 060 String.format( 061 "There are one or more undefined namespace(s) in your request [ %s ], " + 062 "please define them before retrying", 063 namespaceMatch.group(1)); 064 return status(BAD_REQUEST).entity(msg).build(); 065 } 066 } 067 068 return status(BAD_REQUEST).entity(e.getMessage()).build(); 069 } 070 071}