org.apache.felix.ipojo
Interface FieldInterceptor

All Known Implementing Classes:

ArchitectureHandler, ConfigurationHandler, ControllerHandler, Dependency, DependencyHandler, LifecycleCallbackHandler, PrimitiveHandler, Property, ProvidedServiceHandler

public interface FieldInterceptor

A field interceptor is notified when a monitored field asks for a value or receives a new value. A class implementing this interface is able to be notified of field accesses, and is able to inject a value to this field. The listener needs to be register on the instance manager.

Author:

Felix Project Team

Method Summary

Object	onGet(Object pojo, String fieldName, Object value) This method is called when a GETFIELD operation is detected.
void	onSet(Object pojo, String fieldName, Object value) This method is called when a PUTFIELD operation is detected, e.g.

Method Detail

onSet

void onSet(Object pojo,
           String fieldName,
           Object value)

This method is called when a PUTFIELD operation is detected, e.g. an assignation.

Parameters:

pojo - the pojo object setting the value

fieldName - the field name

value - the value passed to the field

onGet

Object onGet(Object pojo,
             String fieldName,
             Object value)

This method is called when a GETFIELD operation is detected. This method allows to inject a value to the field.

Parameters:

pojo - the pojo object getting the value

fieldName - the field name

value - the value passed to the field (by the previous call)

Returns:

the managed value of the field