Package com.libdbm.cel

Class Program

java.lang.Object
com.libdbm.cel.Program
public class Program extends Object
A compiled CEL program that can be evaluated multiple times.

A Program represents a parsed CEL expression that can be efficiently evaluated with different sets of variables. This is more efficient than parsing the expression each time it needs to be evaluated.

Programs are created using CEL.compile(java.lang.String, com.libdbm.cel.Functions) and should be reused when the same expression needs to be evaluated multiple times.

  • Method Details

    • evaluate

      public Object evaluate(Map<String,Object> variables)
      Evaluates the compiled program with the given variables.
      Parameters:
      variables - A map of variable names to their values
      Returns:
      The result of evaluating the expression
      Throws:
      com.libdbm.cel.EvaluationError - if an error occurs during evaluation, such as undefined variables or type mismatches

      Example: 

      
 final Object result = program.evaluate(Map.of(
     "x", 10,
     "y", 20,
     "items", List.of(1, 2, 3)
 ));