Class IsEventFrom

  • All Implemented Interfaces:
    Constraint, SelfDescribing

    public class IsEventFrom
    extends java.lang.Object
    implements Constraint
    Tests if the value is an event announced by a specific object.
    • Constructor Summary

      Constructors 
      Constructor Description
      IsEventFrom​(java.lang.Class eventClass, java.lang.Object source)
      Constructs an IsEventFrom predicate that returns true for any object derived from event_class announced by source.
      IsEventFrom​(java.lang.Object source)
      Constructs an IsEventFrom predicate that returns true for any object derived from EventObjectannounced by source .
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.StringBuffer describeTo​(java.lang.StringBuffer buffer)
      Appends the description of this object to the buffer.
      boolean eval​(java.lang.Object o)
      Evaluates the constraint for argument o.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • IsEventFrom

        public IsEventFrom​(java.lang.Object source)
        Constructs an IsEventFrom predicate that returns true for any object derived from EventObjectannounced by source .
      • IsEventFrom

        public IsEventFrom​(java.lang.Class eventClass,
                           java.lang.Object source)
        Constructs an IsEventFrom predicate that returns true for any object derived from event_class announced by source.
    • Method Detail

      • eval

        public boolean eval​(java.lang.Object o)
        Description copied from interface: Constraint
        Evaluates the constraint for argument o.
        Specified by:
        eval in interface Constraint
        Parameters:
        o - the object against which the constraint is evaluated.
        Returns:
        true if o meets the constraint, false if it does not.
      • describeTo

        public java.lang.StringBuffer describeTo​(java.lang.StringBuffer buffer)
        Description copied from interface: SelfDescribing
        Appends the description of this object to the buffer.
        Specified by:
        describeTo in interface SelfDescribing
        Parameters:
        buffer - The buffer that the description is appended to.
        Returns:
        The buffer passed to the invokedMethod.