001package ball.annotation.processing; 002/*- 003 * ########################################################################## 004 * Utilities 005 * $Id: ConstructorPropertiesProcessor.java 5895 2020-05-08 15:55:11Z ball $ 006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-util/trunk/src/main/java/ball/annotation/processing/ConstructorPropertiesProcessor.java $ 007 * %% 008 * Copyright (C) 2008 - 2020 Allen D. Ball 009 * %% 010 * Licensed under the Apache License, Version 2.0 (the "License"); 011 * you may not use this file except in compliance with the License. 012 * You may obtain a copy of the License at 013 * 014 * http://www.apache.org/licenses/LICENSE-2.0 015 * 016 * Unless required by applicable law or agreed to in writing, software 017 * distributed under the License is distributed on an "AS IS" BASIS, 018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 019 * See the License for the specific language governing permissions and 020 * limitations under the License. 021 * ########################################################################## 022 */ 023import ball.annotation.ServiceProviderFor; 024import java.beans.ConstructorProperties; 025import java.util.List; 026import java.util.Objects; 027import java.util.Set; 028import java.util.stream.Stream; 029import javax.annotation.processing.Processor; 030import javax.annotation.processing.RoundEnvironment; 031import javax.lang.model.element.AnnotationMirror; 032import javax.lang.model.element.AnnotationValue; 033import javax.lang.model.element.Element; 034import javax.lang.model.element.ExecutableElement; 035import javax.lang.model.element.TypeElement; 036import javax.lang.model.element.VariableElement; 037import lombok.NoArgsConstructor; 038import lombok.ToString; 039import org.apache.commons.lang3.StringUtils; 040 041import static java.util.stream.Collectors.toList; 042import static javax.tools.Diagnostic.Kind.ERROR; 043import static javax.tools.Diagnostic.Kind.WARNING; 044 045/** 046 * {@link Processor} implementation to verify {@link ConstructorProperties} 047 * annotation are actual bean properties of the 048 * {@link java.lang.reflect.Constructor}'s {@link Class}. 049 * 050 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 051 * @version $Revision: 5895 $ 052 */ 053@ServiceProviderFor({ Processor.class }) 054@For({ ConstructorProperties.class }) 055@NoArgsConstructor @ToString 056public class ConstructorPropertiesProcessor extends AnnotatedProcessor { 057 @Override 058 public void process(RoundEnvironment roundEnv, 059 TypeElement annotation, Element element) { 060 super.process(roundEnv, annotation, element); 061 062 AnnotationMirror mirror = getAnnotationMirror(element, annotation); 063 AnnotationValue value = getAnnotationValue(mirror, "value"); 064 List<String> names = 065 Stream.of(value) 066 .filter(Objects::nonNull) 067 .map(t -> (List<?>) t.getValue()) 068 .flatMap(List::stream) 069 .map(t -> (AnnotationValue) t) 070 .map(t -> (String) t.getValue()) 071 .collect(toList()); 072 List<? extends VariableElement> parameters = 073 ((ExecutableElement) element).getParameters(); 074 075 if (names.size() != parameters.size()) { 076 print(WARNING, element, mirror, value, 077 "value() does not match %s parameters", element.getKind()); 078 } 079 080 TypeElement type = (TypeElement) element.getEnclosingElement(); 081 Set<String> properties = getPropertyNames(type); 082 083 names.stream() 084 .filter(StringUtils::isNotEmpty) 085 .filter(t -> (! properties.contains(t))) 086 .forEach(t -> print(WARNING, element, mirror, 087 "bean property '%s' not defined", t)); 088 } 089}