Interface BinaryPredicate

All Superinterfaces:
Predicate
public interface BinaryPredicate extends Predicate
A predicate which evaluates a binary expression.

The predicate has a left and right hand side expressions which is matched based on an operator.

This predicate offers the matchesReturningFailureMessage(Exchange) method which evaluates and returns a detailed failure message if the predicate did not match.

  • Method Details

    • getOperator

      String getOperator()
      Gets the operator
      Returns:
      the operator text

    • getLeft

      Expression getLeft()
      Gets the left hand side expression
      Returns:
      the left expression

    • getRight

      Expression getRight()
      Gets the right hand side expression
      Returns:
      the right expression

    • matchesReturningFailureMessage

      @Nullable String matchesReturningFailureMessage(Exchange exchange)
      Evaluates the predicate on the message exchange and returns null if this exchange matches the predicate. If it did not match, then a failure message is returned detailing the reason, which can be used by end users to understand the failure.
      Parameters:
      exchange - the message exchange
      Returns:
      null if the predicate matches.