Package jakarta.el

Class MethodExpression

  • All Implemented Interfaces:
    java.io.Serializable

    public abstract class MethodExpression
    extends Expression
    See Also:
    Serialized Form
    • Constructor Detail

      • MethodExpression

        public MethodExpression()
    • Method Detail

      • getMethodInfo

        public abstract MethodInfo getMethodInfo​(ELContext context)
        Parameters:
        context - The EL context for this evaluation
        Returns:
        Information about the method that this expression resolves to
        Throws:
        java.lang.NullPointerException - If the supplied context is null
        PropertyNotFoundException - If a property/variable resolution failed because no match was found or a match was found but was not readable
        MethodNotFoundException - If no matching method can be found
        ELException - Wraps any exception throw whilst resolving the property
      • invoke

        public abstract java.lang.Object invoke​(ELContext context,
                                                java.lang.Object[] params)
        Parameters:
        context - The EL context for this evaluation
        params - The parameters with which to invoke this method expression
        Returns:
        The result of invoking this method expression
        Throws:
        java.lang.NullPointerException - If the supplied context is null
        PropertyNotFoundException - If a property/variable resolution failed because no match was found or a match was found but was not readable
        MethodNotFoundException - If no matching method can be found
        ELException - Wraps any exception throw whilst resolving the property or coercion of the result to the expected return type fails
      • isParametersProvided

        public boolean isParametersProvided()
        Returns:
        This default implementation always returns false
        Since:
        EL 3.0
      • getMethodReference

        public MethodReference getMethodReference​(ELContext context)
        Obtain the MethodReference for the method to which this method expression resolves.
        Parameters:
        context - The EL context for this evaluation
        Returns:
        This default implementation always returns null
        Throws:
        java.lang.NullPointerException - If the supplied context is null
        PropertyNotFoundException - If a property/variable resolution failed because no match was found or a match was found but was not readable
        MethodNotFoundException - If no matching method can be found
        ELException - Wraps any exception throw whilst resolving the property
        Since:
        EL 5.0