ognl

Class MapPropertyAccessor

java.lang.Object

ognl.MapPropertyAccessor

All Implemented Interfaces:

PropertyAccessor

public class MapPropertyAccessor
extends Object
implements PropertyAccessor

Implementation of PropertyAccessor that sets and gets properties by storing and looking up values in Maps.

Author:

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

Constructor Summary

Constructors

Constructor and Description
MapPropertyAccessor()

Method Summary

Methods

Modifier and Type	Method and Description
Object	getProperty(Map context, Object target, Object name) Extracts and returns the property of the given name from the given target object.
String	getSourceAccessor(OgnlContext context, Object target, Object index) Returns a java string representing the textual method that should be called to access a particular element.
String	getSourceSetter(OgnlContext context, Object target, Object index) Returns a java string representing the textual method that should be called to set a particular element.
void	setProperty(Map context, Object target, Object name, Object value) Sets the value of the property of the given name in the given target object.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapPropertyAccessor

public MapPropertyAccessor()

Method Detail

getProperty

public Object getProperty(Map context,
                 Object target,
                 Object name)
                   throws OgnlException

Description copied from interface: PropertyAccessor

Extracts and returns the property of the given name from the given target object.

Specified by:

getProperty in interface PropertyAccessor

Parameters:

context - The current execution context.

target - the object to get the property from

name - the name of the property to get.

Returns:

the current value of the given property in the given object

Throws:

OgnlException - if there is an error locating the property in the given object

setProperty

public void setProperty(Map context,
               Object target,
               Object name,
               Object value)
                 throws OgnlException

Description copied from interface: PropertyAccessor

Sets the value of the property of the given name in the given target object.

Specified by:

setProperty in interface PropertyAccessor

Parameters:

context - The current execution context.

target - the object to set the property in

name - the name of the property to set

value - the new value for the property.

Throws:

OgnlException - if there is an error setting the property in the given object

getSourceAccessor

public String getSourceAccessor(OgnlContext context,
                       Object target,
                       Object index)

Description copied from interface: PropertyAccessor

Returns a java string representing the textual method that should be called to access a particular element. (ie "get")

Specified by:

getSourceAccessor in interface PropertyAccessor

Parameters:

context - The current execution context.

target - The current object target on the expression tree being evaluated.

index - The index object that will be placed inside the string to access the value.

Returns:

The source accessor method to call.

getSourceSetter

public String getSourceSetter(OgnlContext context,
                     Object target,
                     Object index)

Description copied from interface: PropertyAccessor

Returns a java string representing the textual method that should be called to set a particular element. (ie "set")

Specified by:

getSourceSetter in interface PropertyAccessor

Parameters:

context - The current execution context.

target - The current object target on the expression tree being evaluated.

index - The index object that will be placed inside the string to set the value.

Returns:

The source setter method to call.