Class LambdaExpressionNestedState

java.lang.Object
org.apache.el.lang.LambdaExpressionNestedState
public final class LambdaExpressionNestedState extends Object
Stores the state required for correct evaluation of lambda expressions. Lambda expressions may be nested. Correct evaluation requires knowledge not just of the current lambda expression, but also of any nested and nesting expressions.

The sets of nodes for parsed expressions are cached and, as a result, a set of nodes may be being used by multiple concurrent threads. This means any state relating to evaluation cannot be stored in the nodes. State is therefore stored in the EvaluationContext which is created, used for a single evaluation and then discarded.

  • Constructor Details

    • LambdaExpressionNestedState

      public LambdaExpressionNestedState()
      Default constructor.

  • Method Details

    • incrementNestingCount

      public void incrementNestingCount()
      Increments the nesting count for nested lambda expressions.

    • getNestingCount

      public int getNestingCount()
      Returns the current nesting count.
      Returns:
      the nesting count

    • setHasFormalParameters

      public void setHasFormalParameters()
      Marks that the current lambda expression has formal parameters.

    • getHasFormalParameters

      public boolean getHasFormalParameters()
      Returns whether the current lambda expression has formal parameters.
      Returns:
      true if the lambda has formal parameters