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.fcrepo.http.commons.domain.RDFMediaType.TEXT_PLAIN_WITH_CHARSET; 023import static org.slf4j.LoggerFactory.getLogger; 024 025import java.util.regex.Matcher; 026import java.util.regex.Pattern; 027 028import javax.ws.rs.core.Response; 029import javax.ws.rs.ext.ExceptionMapper; 030import javax.ws.rs.ext.Provider; 031 032import org.slf4j.Logger; 033 034import org.apache.jena.query.QueryParseException; 035 036 037/** 038 * Handles Sparql query parsing exceptions thrown when querying or updating. 039 * 040 * @author whikloj 041 * @since September 9, 2014 042 */ 043@Provider 044public class QueryParseExceptionMapper implements 045 ExceptionMapper<QueryParseException>, ExceptionDebugLogging { 046 047 private static final Logger LOGGER = getLogger(QueryParseExceptionMapper.class); 048 049 @Override 050 public Response toResponse(final QueryParseException e) { 051 052 LOGGER.error("Captured a query parse exception {}", e.getMessage()); 053 debugException(this, e, LOGGER); 054 if (e.getMessage().matches(".* Unresolved prefixed name: .*")) { 055 final Pattern namespacePattern = 056 Pattern.compile("Unresolved prefixed name: (\\w+:\\w+)"); 057 final Matcher namespaceMatch = 058 namespacePattern.matcher(e.getMessage()); 059 if (namespaceMatch.find()) { 060 final String msg = 061 String.format( 062 "There are one or more undefined namespace(s) in your request [ %s ], " + 063 "please define them before retrying", 064 namespaceMatch.group(1)); 065 return status(BAD_REQUEST).entity(msg).type(TEXT_PLAIN_WITH_CHARSET).build(); 066 } 067 } 068 069 return status(BAD_REQUEST).entity(e.getMessage()).type(TEXT_PLAIN_WITH_CHARSET).build(); 070 } 071 072}