ognl

Interface MemberAccess

All Known Implementing Classes:

AbstractMemberAccess

public interface MemberAccess

This interface provides a hook for preparing for accessing members of objects. The Java2 version of this method can allow access to otherwise inaccessable members, such as private fields.

Version:

15 October 1999

Author:

Luke Blanshard (blanshlu@netscape.net), Drew Davidson (drew@ognl.org)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isAccessible(Map context, Object target, Member member, String propertyName) Returns true if the given member is accessible or can be made accessible by this object.
void	restore(Map context, Object target, Member member, String propertyName, Object state) Restores the member from the previous setup call.
Object	setup(Map context, Object target, Member member, String propertyName) Sets the member up for accessibility

Method Detail

setup

Object setup(Map context,
           Object target,
           Member member,
           String propertyName)

Sets the member up for accessibility

Parameters:

context - the current execution context.

target - the Object upon which to perform the setup operation.

member - the Member upon which to perform the setup operation.

propertyName - the property upon which to perform the setup operation.

Returns:

the Object representing the original accessibility state of the target prior to the setup operation.

restore

void restore(Map context,
           Object target,
           Member member,
           String propertyName,
           Object state)

Restores the member from the previous setup call.

Parameters:

context - the current execution context.

target - the Object upon which to perform the setup operation.

member - the Member upon which to perform the setup operation.

propertyName - the property upon which to perform the setup operation.

state - the Object holding the state to restore (target state prior to the setup operation).

isAccessible

boolean isAccessible(Map context,
                   Object target,
                   Member member,
                   String propertyName)

Returns true if the given member is accessible or can be made accessible by this object.

Parameters:

context - the current execution context.

target - the Object to test accessibility for.

member - the Member to test accessibility for.

propertyName - the property to test accessibility for.

Returns:

true if the target/member/propertyName is accessible in the context, false otherwise.