Package org.springframework.security.access.expression

Class AbstractSecurityExpressionHandler<T>

java.lang.Object

org.springframework.security.access.expression.AbstractSecurityExpressionHandler<T>

All Implemented Interfaces:

org.springframework.aop.framework.AopInfrastructureBean, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationContextAware, SecurityExpressionHandler<T>

Direct Known Subclasses:

DefaultMessageSecurityExpressionHandler, DefaultMethodSecurityExpressionHandler, DefaultWebSecurityExpressionHandler

public abstract class AbstractSecurityExpressionHandler<T>
extends java.lang.Object
implements SecurityExpressionHandler<T>, org.springframework.context.ApplicationContextAware

Base implementation of the facade which isolates Spring Security's requirements for evaluating security expressions from the implementation of the underlying expression objects.

Since:

3.1

Constructor Summary

Constructors

Constructor	Description
AbstractSecurityExpressionHandler()

Method Summary

Modifier and Type	Method	Description
org.springframework.expression.EvaluationContext	createEvaluationContext(Authentication authentication, T invocation)	Invokes the internal template methods to create StandardEvaluationContext and SecurityExpressionRoot objects.
protected org.springframework.expression.spel.support.StandardEvaluationContext	createEvaluationContextInternal(Authentication authentication, T invocation)	Override to create a custom instance of StandardEvaluationContext.
protected abstract SecurityExpressionOperations	createSecurityExpressionRoot(Authentication authentication, T invocation)	Implement in order to create a root object of the correct type for the supported invocation type.
org.springframework.expression.ExpressionParser	getExpressionParser()
protected PermissionEvaluator	getPermissionEvaluator()
protected RoleHierarchy	getRoleHierarchy()
void	setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
void	setExpressionParser(org.springframework.expression.ExpressionParser expressionParser)
void	setPermissionEvaluator(PermissionEvaluator permissionEvaluator)
void	setRoleHierarchy(RoleHierarchy roleHierarchy)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractSecurityExpressionHandler

public AbstractSecurityExpressionHandler()

Method Detail

getExpressionParser

public final org.springframework.expression.ExpressionParser getExpressionParser()

Specified by:

getExpressionParser in interface SecurityExpressionHandler<T>

Returns:

an expression parser for the expressions used by the implementation.

setExpressionParser

public final void setExpressionParser(org.springframework.expression.ExpressionParser expressionParser)

createEvaluationContext

public final org.springframework.expression.EvaluationContext createEvaluationContext(Authentication authentication,
                                                                                      T invocation)

Invokes the internal template methods to create StandardEvaluationContext and SecurityExpressionRoot objects.

Specified by:

createEvaluationContext in interface SecurityExpressionHandler<T>

Parameters:

authentication - the current authentication object

invocation - the invocation (filter, method, channel)

Returns:

the context object for use in evaluating the expression, populated with a suitable root object.

createEvaluationContextInternal

protected org.springframework.expression.spel.support.StandardEvaluationContext createEvaluationContextInternal(Authentication authentication,
                                                                                                                T invocation)

Override to create a custom instance of StandardEvaluationContext.

The returned object will have a SecurityExpressionRootPropertyAccessor added, allowing beans in the ApplicationContext to be accessed via expression properties.

Parameters:

authentication - the current authentication object

invocation - the invocation (filter, method, channel)

Returns:

A StandardEvaluationContext or potentially a custom subclass if overridden.

createSecurityExpressionRoot

protected abstract SecurityExpressionOperations createSecurityExpressionRoot(Authentication authentication,
                                                                             T invocation)

Implement in order to create a root object of the correct type for the supported invocation type.

Parameters:

authentication - the current authentication object

invocation - the invocation (filter, method, channel)

Returns:

the object

getRoleHierarchy

protected RoleHierarchy getRoleHierarchy()

setRoleHierarchy

public void setRoleHierarchy(RoleHierarchy roleHierarchy)

getPermissionEvaluator

protected PermissionEvaluator getPermissionEvaluator()

setPermissionEvaluator

public void setPermissionEvaluator(PermissionEvaluator permissionEvaluator)

setApplicationContext

public void setApplicationContext(org.springframework.context.ApplicationContext applicationContext)

Specified by:

setApplicationContext in interface org.springframework.context.ApplicationContextAware