| /* |
| * 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.bval.jsr; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.annotation.Annotation; |
| import java.util.Properties; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| import javax.validation.ConstraintValidator; |
| |
| import org.apache.bval.jsr.metadata.ClassLoadingValidatorMappingProvider; |
| import org.apache.bval.jsr.metadata.ValidatorMapping; |
| import org.apache.bval.util.StringUtils; |
| import org.apache.bval.util.reflection.Reflection; |
| import org.apache.commons.weaver.privilizer.Privilizing; |
| import org.apache.commons.weaver.privilizer.Privilizing.CallTo; |
| |
| /** |
| * Description: Provides access to the default constraints/validator |
| * implementation classes built into the framework. These are configured in |
| * DefaultConstraints.properties.<br/> |
| */ |
| @Privilizing(@CallTo(Reflection.class)) |
| public class ConstraintDefaults extends ClassLoadingValidatorMappingProvider { |
| public static final ConstraintDefaults INSTANCE = new ConstraintDefaults(); |
| |
| private static final Logger log = Logger.getLogger(ConstraintDefaults.class.getName()); |
| private static final String DEFAULT_CONSTRAINTS = "org/apache/bval/jsr/DefaultConstraints.properties"; |
| |
| private final Properties properties; |
| |
| /** |
| * Create a new ConstraintDefaults instance. |
| */ |
| private ConstraintDefaults() { |
| this.properties = loadProperties(DEFAULT_CONSTRAINTS); |
| } |
| |
| private Properties loadProperties(String resource) { |
| final Properties result = new Properties(); |
| final ClassLoader classloader = getClassLoader(); |
| try (final InputStream stream = classloader.getResourceAsStream(resource)) { |
| if (stream == null) { |
| log.log(Level.WARNING, String.format("Cannot find %s", resource)); |
| } else { |
| result.load(stream); |
| } |
| } catch (IOException e) { |
| log.log(Level.SEVERE, String.format("Cannot load %s", resource), e); |
| } |
| return result; |
| } |
| |
| @SuppressWarnings({ "unchecked", "rawtypes" }) |
| @Override |
| public <A extends Annotation> ValidatorMapping<A> doGetValidatorMapping(Class<A> constraintType) { |
| |
| final String validators = properties.getProperty(constraintType.getName()); |
| |
| if (StringUtils.isBlank(validators)) { |
| return null; |
| } |
| return new ValidatorMapping<>("built-in", |
| load(Stream.of(StringUtils.split(validators, ',')).map(String::trim), |
| (Class<ConstraintValidator<A, ?>>) (Class) ConstraintValidator.class, |
| e -> log.log(Level.SEVERE, "exception loading default constraint validators", e)) |
| .collect(Collectors.toList())); |
| } |
| } |