# Interface: com.pnfsoftware.jeb.core.IDynamicTargetPlugin
- Super interfaces: `com.pnfsoftware.jeb.core.IPlugin`

A dynamic target plugin is a special type of plugin that takes one or more units as input and  provide augmentation for those units. Currently, the JEB back\-end supports two types of dynamic  target plugins:  
  
- [contributions](com.pnfsoftware.jeb.core.IUnitContribution.md)  
- [interpreters](com.pnfsoftware.jeb.core.units.IUnitInterpreter.md)  

  

  External plugins implementing this interface **must have a no\-argument constructor**.  

  **Life\-cycle information**. Unlike standard JEB unit plugins, that decouple the identification  from the business logic, dynamic\-target plugins specify the identification and processing details  within a single interface \(the primary reason behind this design choice being ease of  development, in particular for contribution plugins written as Python scripts\). Therefore,  multiple dynamic\-target plugins can be \(and generally, are\) instantiated:
  \- One first instance serves as for identification purpose only: its [#isTarget(IUnit)](#isTarget(IUnit))  method is used to determine is a given unit is a candidate for the plugin;
  \- On a successful identification, a new plugin object is instantiated and registered with its  target unit; the primary target unit is set using [#setPrimaryTarget(IUnit)](#setPrimaryTarget(IUnit)).

## Abstract Method: getPrimaryTarget
- return type: `com.pnfsoftware.jeb.core.units.IUnit`

Description: Retrieve the primary target for this plugin. If called before the plugin has been initialized  by the JEB back\-end, this method should return null.
return: the primary target unit, or null if it has not been set yet

## Abstract Method: isTarget
- parameter: `unit`, type: `com.pnfsoftware.jeb.core.units.IUnit`
- return type: `boolean`

Description: Determine if a provided unit is an intended target for this plugin.
parameter: unit: the intended target
return: true if the provided unit is a target

## Abstract Method: setPrimaryTarget
- parameter: `unit`, type: `com.pnfsoftware.jeb.core.units.IUnit`

Description: Set the primary target for this plugin. This method should not be called by client code. The  JEB back\-end is calling this method when initializing a dynamic target plugin.
parameter: unit: the primary target unit