org.apache.commons.ognl
Class ArrayPropertyAccessor

java.lang.Object
  org.apache.commons.ognl.ObjectPropertyAccessor
      org.apache.commons.ognl.ArrayPropertyAccessor

All Implemented Interfaces:

PropertyAccessor

public class ArrayPropertyAccessor
extends ObjectPropertyAccessor
implements PropertyAccessor

Implementation of PropertyAccessor that uses numbers and dynamic subscripts as properties to index into Java arrays.

Author:

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

ArrayPropertyAccessor

public ArrayPropertyAccessor()

getProperty

public Object getProperty(Map<String,Object> 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

Overrides:

getProperty in class ObjectPropertyAccessor

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<String,Object> 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

Overrides:

setProperty in class ObjectPropertyAccessor

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

Overrides:

getSourceAccessor in class ObjectPropertyAccessor

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

Overrides:

getSourceSetter in class ObjectPropertyAccessor

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.