001/** 002 * Copyright 2015 DuraSpace, Inc. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.fcrepo.http.commons.exceptionhandlers; 017 018import org.apache.commons.codec.binary.Base64; 019import org.fcrepo.kernel.exception.MalformedRdfException; 020 021import javax.ws.rs.core.Link; 022import javax.ws.rs.core.Response; 023import javax.ws.rs.ext.ExceptionMapper; 024import javax.ws.rs.ext.Provider; 025 026import static javax.ws.rs.core.Response.Status.CONFLICT; 027import static javax.ws.rs.core.Response.status; 028import static org.fcrepo.kernel.RdfLexicon.CONSTRAINED_BY; 029 030/** 031 * @author cabeer 032 * @since 9/30/14 033 */ 034@Provider 035public class MalformedRdfExceptionMapper implements ExceptionMapper<MalformedRdfException> { 036 037 @Override 038 public Response toResponse(final MalformedRdfException e) { 039 final Link link = Link.fromUri(getConstraintUri(e)).rel(CONSTRAINED_BY.getURI()).build(); 040 return status(CONFLICT).entity(e.getMessage()).links(link).build(); 041 } 042 043 private static String getConstraintUri(final MalformedRdfException e) { 044 return "data:text/plain;base64," + Base64.encodeBase64String(e.getMessage().getBytes()); 045 } 046}