spring DataBindingPropertyAccessor 源码
spring DataBindingPropertyAccessor 代码
文件路径：/spring-expression/src/main/java/org/springframework/expression/spel/support/DataBindingPropertyAccessor.java
/*
* Copyright 2002-2018 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.expression.spel.support;
import java.lang.reflect.Method;
/**
* A {@link org.springframework.expression.PropertyAccessor} variant for data binding
* purposes, using reflection to access properties for reading and possibly writing.
*
* <p>A property can be referenced through a public getter method (when being read)
* or a public setter method (when being written), and also as a public field.
*
* <p>This accessor is explicitly designed for user-declared properties and does not
* resolve technical properties on {@code java.lang.Object} or {@code java.lang.Class}.
* For unrestricted resolution, choose {@link ReflectivePropertyAccessor} instead.
*
* @author Juergen Hoeller
* @since 4.3.15
* @see #forReadOnlyAccess()
* @see #forReadWriteAccess()
* @see SimpleEvaluationContext
* @see StandardEvaluationContext
* @see ReflectivePropertyAccessor
*/
public final class DataBindingPropertyAccessor extends ReflectivePropertyAccessor {
/**
* Create a new property accessor for reading and possibly also writing.
* @param allowWrite whether to also allow for write operations
* @see #canWrite
*/
private DataBindingPropertyAccessor(boolean allowWrite) {
super(allowWrite);
}
@Override
protected boolean isCandidateForProperty(Method method, Class<?> targetClass) {
Class<?> clazz = method.getDeclaringClass();
return (clazz != Object.class && clazz != Class.class && !ClassLoader.class.isAssignableFrom(targetClass));
}
/**
* Create a new data-binding property accessor for read-only operations.
*/
public static DataBindingPropertyAccessor forReadOnlyAccess() {
return new DataBindingPropertyAccessor(false);
}
/**
* Create a new data-binding property accessor for read-write operations.
*/
public static DataBindingPropertyAccessor forReadWriteAccess() {
return new DataBindingPropertyAccessor(true);
}
}
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