org.springframework.security.access.expression.method
Class DefaultMethodSecurityExpressionHandler

java.lang.Object
  org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler

All Implemented Interfaces:

MethodSecurityExpressionHandler

public class DefaultMethodSecurityExpressionHandler
extends Object
implements MethodSecurityExpressionHandler

The standard implementation of SecurityExpressionHandler.

A single instance should usually be shared amongst the beans that require expression support.

Since:

3.0

Version:

$Id: DefaultMethodSecurityExpressionHandler.java 3895 2009-09-15 17:17:21Z ltaylor $

Author:

Luke Taylor

Field Summary

protected org.apache.commons.logging.Log

logger

Constructor Summary

DefaultMethodSecurityExpressionHandler()

Method Summary

EvaluationContext	createEvaluationContext(Authentication auth, org.aopalliance.intercept.MethodInvocation mi) Uses a MethodSecurityEvaluationContext as the EvaluationContext implementation and configures it with a MethodSecurityExpressionRoot instance as the expression root object.
Object	filter(Object filterTarget, Expression filterExpression, EvaluationContext ctx) Filters a target collection or array.
ExpressionParser	getExpressionParser()
void	setParameterNameDiscoverer(ParameterNameDiscoverer parameterNameDiscoverer)
void	setPermissionEvaluator(PermissionEvaluator permissionEvaluator)
void	setReturnObject(Object returnObject, EvaluationContext ctx) Used to inform the expression system of the return object for the given evaluation context.
void	setRoleHierarchy(RoleHierarchy roleHierarchy)
void	setTrustResolver(AuthenticationTrustResolver trustResolver)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Constructor Detail

DefaultMethodSecurityExpressionHandler

public DefaultMethodSecurityExpressionHandler()

Method Detail

createEvaluationContext

public EvaluationContext createEvaluationContext(Authentication auth,
                                                 org.aopalliance.intercept.MethodInvocation mi)

Uses a MethodSecurityEvaluationContext as the EvaluationContext implementation and configures it with a MethodSecurityExpressionRoot instance as the expression root object.

Specified by:

createEvaluationContext in interface MethodSecurityExpressionHandler

filter

public Object filter(Object filterTarget,
                     Expression filterExpression,
                     EvaluationContext ctx)

Description copied from interface: MethodSecurityExpressionHandler

Filters a target collection or array. Only applies to method invocations.

Specified by:

filter in interface MethodSecurityExpressionHandler

Parameters:

filterTarget - the array or collection to be filtered.

filterExpression - the expression which should be used as the filter condition. If it returns false on evaluation, the object will be removed from the returned collection

ctx - the current evaluation context (as created through a call to MethodSecurityExpressionHandler.createEvaluationContext(Authentication, MethodInvocation)

Returns:

the filtered collection or array

getExpressionParser

public ExpressionParser getExpressionParser()

Specified by:

getExpressionParser in interface MethodSecurityExpressionHandler

Returns:

an expression parser for the expressions used by the implementation.

setParameterNameDiscoverer

public void setParameterNameDiscoverer(ParameterNameDiscoverer parameterNameDiscoverer)

setPermissionEvaluator

public void setPermissionEvaluator(PermissionEvaluator permissionEvaluator)

setTrustResolver

public void setTrustResolver(AuthenticationTrustResolver trustResolver)

setReturnObject

public void setReturnObject(Object returnObject,
                            EvaluationContext ctx)

Description copied from interface: MethodSecurityExpressionHandler

Used to inform the expression system of the return object for the given evaluation context. Only applies to method invocations.

Specified by:

setReturnObject in interface MethodSecurityExpressionHandler

Parameters:

returnObject - the return object value

ctx - the context within which the object should be set (as created through a call to MethodSecurityExpressionHandler.createEvaluationContext(Authentication, MethodInvocation)

setRoleHierarchy

public void setRoleHierarchy(RoleHierarchy roleHierarchy)