Package jason.stdlib

Class df_subscribe

java.lang.Object
All Implemented Interfaces:
InternalAction, java.io.Serializable

@Manual(literal=".df_subscribe(service[,type])",
        hint="subscribes the agent as interested in providers of referred service and, optionally, a type",
        argsHint={"the service the agents is interested in","the type of the service [optional]"},
        argsType={"literal","string"},
        examples=".df_subscribe(\"sell(book)\"): subscribe the agent for providers of agents that sell books",
        seeAlso={"jason.stdlib.df_register","jason.stdlib.df_deregister","jason.stdlib.df_search"})
public class df_subscribe
extends df_register

Internal action: .df_subscribe(S [,T]).

Description: subscribes the agent as interested in providers of service S of type T. For each new agent providing this service, the agent will receive a message .

Parameters:

  • - service (literal): the service the agents is interested in.
  • - type (string -- optional): the type of the service.

Examples:

  • .df_subscribe("sell(book)"): subscribe the agent for providers of agents that sell books.
See Also:
df_register, df_deregister, df_search, Serialized Form
  • Field Details

  • Constructor Details

    • df_subscribe

      public df_subscribe()
  • Method Details

    • create

      public static InternalAction create()
    • getMinArgs

      public int getMinArgs()
      Overrides:
      getMinArgs in class df_register
    • getMaxArgs

      public int getMaxArgs()
      Overrides:
      getMaxArgs in class df_register
    • execute

      public java.lang.Object execute​(TransitionSystem ts, Unifier un, Term[] args) throws java.lang.Exception
      Description copied from interface: InternalAction
      Executes the internal action. It should return a Boolean or an Iterator. A true boolean return means that the IA was successfully executed. An Iterator result means that there is more than one answer for this IA (e.g. see member internal action).
      Specified by:
      execute in interface InternalAction
      Overrides:
      execute in class df_register
      Throws:
      java.lang.Exception