spring SpringConstraintValidatorFactory 源码
spring SpringConstraintValidatorFactory 代码
文件路径：/spring-context/src/main/java/org/springframework/validation/beanvalidation/SpringConstraintValidatorFactory.java
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.validation.beanvalidation;
import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorFactory;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.util.Assert;
/**
* JSR-303 {@link ConstraintValidatorFactory} implementation that delegates to a
* Spring BeanFactory for creating autowired {@link ConstraintValidator} instances.
*
* <p>Note that this class is meant for programmatic use, not for declarative use
* in a standard {@code validation.xml} file. Consider
* {@link org.springframework.web.bind.support.SpringWebConstraintValidatorFactory}
* for declarative use in a web application, e.g. with JAX-RS or JAX-WS.
*
* @author Juergen Hoeller
* @since 3.0
* @see org.springframework.beans.factory.config.AutowireCapableBeanFactory#createBean(Class)
* @see org.springframework.context.ApplicationContext#getAutowireCapableBeanFactory()
*/
public class SpringConstraintValidatorFactory implements ConstraintValidatorFactory {
private final AutowireCapableBeanFactory beanFactory;
/**
* Create a new SpringConstraintValidatorFactory for the given BeanFactory.
* @param beanFactory the target BeanFactory
*/
public SpringConstraintValidatorFactory(AutowireCapableBeanFactory beanFactory) {
Assert.notNull(beanFactory, "BeanFactory must not be null");
this.beanFactory = beanFactory;
}
@Override
public <T extends ConstraintValidator<?, ?>> T getInstance(Class<T> key) {
return this.beanFactory.createBean(key);
}
// Bean Validation 1.1 releaseInstance method
@Override
public void releaseInstance(ConstraintValidator<?, ?> instance) {
this.beanFactory.destroyBean(instance);
}
}
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