spring security PermissionEvaluator 源码
spring security PermissionEvaluator 代码
文件路径：/core/src/main/java/org/springframework/security/access/PermissionEvaluator.java
/*
* Copyright 2002-2016 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.security.access;
import java.io.Serializable;
import org.springframework.aop.framework.AopInfrastructureBean;
import org.springframework.security.core.Authentication;
/**
* Strategy used in expression evaluation to determine whether a user has a permission or
* permissions for a given domain object.
*
* @author Luke Taylor
* @since 3.0
*/
public interface PermissionEvaluator extends AopInfrastructureBean {
/**
* @param authentication represents the user in question. Should not be null.
* @param targetDomainObject the domain object for which permissions should be
* checked. May be null in which case implementations should return false, as the null
* condition can be checked explicitly in the expression.
* @param permission a representation of the permission object as supplied by the
* expression system. Not null.
* @return true if the permission is granted, false otherwise
*/
boolean hasPermission(Authentication authentication, Object targetDomainObject, Object permission);
/**
* Alternative method for evaluating a permission where only the identifier of the
* target object is available, rather than the target instance itself.
* @param authentication represents the user in question. Should not be null.
* @param targetId the identifier for the object instance (usually a Long)
* @param targetType a String representing the target's type (usually a Java
* classname). Not null.
* @param permission a representation of the permission object as supplied by the
* expression system. Not null.
* @return true if the permission is granted, false otherwise
*/
boolean hasPermission(Authentication authentication, Serializable targetId, String targetType, Object permission);
}
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