Interface ExpressionFunctionResolver

All Known Implementing Classes:
EnumResolver, MultiResolver
public interface ExpressionFunctionResolver
Resolver encapsulation for finding a relevant function by name.
Author:
Matthew Tropiano

  • Method Details

    • containsFunctionByName

      boolean containsFunctionByName(String name)
      Attempts to find if this resolver has a function by its calling name.

      Names must be resolved case-insensitively!

      If this returns true for a function name, getFunctionByName(String) must NOT return null if called with that name!

      Parameters:
      name - the name to find.
      Returns:
      a corresponding function or null for no such function.

    • getFunctionByName

      ExpressionFunctionType getFunctionByName(String name)
      Attempts to resolve a pertinent function by its calling name.

      Names must be resolved case-insensitively!

      If this returns a non-null for a function name, containsFunctionByName(String) must NOT return false if called with that name!

      The same function must be returned if this is called again with the same name!

      Parameters:
      name - the name to resolve.
      Returns:
      a corresponding function or null for no such function.
      See Also: