Package ca.uqac.lif.cep.tuples

Class FetchAttribute

  • All Implemented Interfaces:
    ca.uqac.lif.azrael.Printable, ca.uqac.lif.azrael.Readable, ca.uqac.lif.cep.Duplicable, ca.uqac.lif.cep.functions.DuplicableFunction
    public class FetchAttribute
extends ca.uqac.lif.cep.functions.UnaryFunction<Tuple,​java.lang.Object>
    Gets the value of an attribute in a Tuple
    Author:
    Sylvain Hallé

    • Field Summary

      • Fields inherited from class ca.uqac.lif.cep.functions.Function

        s_maxInputArity

    • Constructor Summary

      Constructors 
      Constructor Description
      FetchAttribute​(java.lang.String attribute_name)
      Creates a new instance of the function

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static void build​(java.util.ArrayDeque<java.lang.Object> stack)  
      FetchAttribute duplicate​(boolean with_state)  
      java.lang.String getAttributeName()
      Gets the name of the attribute to get
      java.lang.Object getValue​(Tuple t)  
      java.lang.String toString()  

      • Methods inherited from class ca.uqac.lif.cep.functions.UnaryFunction

        evaluate, getInputArity, getInputTypesFor, getOutputArity, getOutputTypeFor, reset

      • Methods inherited from class ca.uqac.lif.cep.functions.Function

        duplicate, evaluate, evaluate, evaluateLazy, evaluatePartial, print, printState, read, readState

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • FetchAttribute

        public FetchAttribute​(java.lang.String attribute_name)
        Creates a new instance of the function
        Parameters:
        attribute_name - The name of the attribute to get

    • Method Detail

      • getAttributeName

        public java.lang.String getAttributeName()
        Gets the name of the attribute to get
        Returns:
        The name

      • getValue

        public java.lang.Object getValue​(Tuple t)
        Specified by:
        getValue in class ca.uqac.lif.cep.functions.UnaryFunction<Tuple,​java.lang.Object>

      • duplicate

        public FetchAttribute duplicate​(boolean with_state)
        Specified by:
        duplicate in interface ca.uqac.lif.cep.Duplicable
        Overrides:
        duplicate in class ca.uqac.lif.cep.functions.UnaryFunction<Tuple,​java.lang.Object>

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • build

        public static void build​(java.util.ArrayDeque<java.lang.Object> stack)