| /* |
| * 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.polygene.library.rest.server.restlet; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.Locale; |
| import java.util.ResourceBundle; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import org.apache.polygene.api.constraint.ValueConstraintViolation; |
| |
| /** |
| * TODO |
| */ |
| public class ConstraintViolationMessages |
| { |
| public String getMessage( ValueConstraintViolation violation, Locale locale ) |
| throws IllegalArgumentException |
| { |
| try |
| { |
| ResourceBundle bundle = ResourceBundle.getBundle( "ValidationMessages", locale ); |
| |
| Annotation annotation = violation.constraint(); |
| String message; |
| try |
| { |
| message = (String) annotation.annotationType().getMethod( "message" ).invoke( annotation ); |
| } |
| catch( Exception e1 ) |
| { |
| message = "{" + annotation.annotationType().getName() + ".message" + "}"; |
| } |
| |
| while( message.startsWith( "{" ) ) |
| { |
| message = bundle.getString( message.substring( 1, message.length() - 1 ) ); |
| } |
| |
| Pattern pattern = Pattern.compile( "\\{[^\\}]*\\}" ); |
| String result = ""; |
| Matcher matcher = pattern.matcher( message ); |
| int start = 0; |
| while( matcher.find() ) |
| { |
| String match = matcher.group(); |
| match = match.substring( 1, match.length() - 1 ); |
| result += message.substring( start, matcher.start() ); |
| |
| if( match.equals( "val" ) ) |
| { |
| result += violation.value() == null ? "null" : violation.value().toString(); |
| } |
| else |
| { |
| result += annotation.annotationType().getMethod( match ).invoke( annotation ).toString(); |
| } |
| start = matcher.end(); |
| } |
| result += message.substring( start ); |
| return result; |
| } |
| catch( Exception e ) |
| { |
| throw new IllegalArgumentException( "Could not deduce message", e ); |
| } |
| } |
| } |