7. An apparatus for implementing non-function logic for a plurality of applications extensibly and independently of functional logic for each one of the plurality of applications, comprising: at least one processor; and an application loader for loading policy demand configuration of an application; a policy attacher for acquiring association relationship between a policy and a plug-in required by the application based on a loaded policy demand configuration of the application, and for generating a plug-in context definition according to the acquired association relationship, the plug-in context definition being part of a plug-in context associated with the plug-in, wherein the plug-in context defines services provided by the plug-in and reference to other plug-ins related to the plug-in; an application builder for generating an application runtime object based on a component definition and generating a plug-in context object based on the plug-in context definition, wherein the plug-in context object is an instantiated plug-in context definition; an application constructor unit for associating the plug-in context object to the application runtime object so as to implement a function of the plug-in for the application; and a plug-in registry unit for storing a plug-in registry containing information on description of the plug-ins and on relationships between the plug-ins; wherein the policy attacher acquires the association relationship between the policy and the required plug-in by querying the plug-in registry based on the policy demand configuration.
7. An apparatus for implementing non-function logic for a plurality of applications extensibly and independently of functional logic for each one of the plurality of applications, comprising: at least one processor; and an application loader for loading policy demand configuration of an application; a policy attacher for acquiring association relationship between a policy and a plug-in required by the application based on a loaded policy demand configuration of the application, and for generating a plug-in context definition according to the acquired association relationship, the plug-in context definition being part of a plug-in context associated with the plug-in, wherein the plug-in context defines services provided by the plug-in and reference to other plug-ins related to the plug-in; an application builder for generating an application runtime object based on a component definition and generating a plug-in context object based on the plug-in context definition, wherein the plug-in context object is an instantiated plug-in context definition; an application constructor unit for associating the plug-in context object to the application runtime object so as to implement a function of the plug-in for the application; and a plug-in registry unit for storing a plug-in registry containing information on description of the plug-ins and on relationships between the plug-ins; wherein the policy attacher acquires the association relationship between the policy and the required plug-in by querying the plug-in registry based on the policy demand configuration. 11. The apparatus as claimed in claim 7 , wherein the plug-in context is formed as a chain table or a tree structure.