public abstract class MethodExpression
extends Expression 

Since:

2.1

• Constructor Summary

  Constructors

  Constructor and Description
  MethodExpression ()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract MethodInfo	getMethodInfo (ELContext context) Returns information about the referenced method.
  abstract java.lang.Object	invoke (ELContext context, java.lang.Object[] params) If the expression is a string literal, returns its value coerced to the expected return type of the method signature.

  • Methods inherited from class javax.el.Expression

    equals, getExpressionString, hashCode, isLiteralText

  • Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

• Constructor Detail

  • MethodExpression

    public MethodExpression()

• Method Detail

  • getMethodInfo

    public abstract MethodInfo getMethodInfo(ELContext context)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     MethodNotFoundException,
     ELException 

    Returns information about the referenced method.

    Parameters:

    context - the evaluation context

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    MethodNotFoundException

    ELException

  • invoke

    public abstract java.lang.Object invoke(ELContext context,
     java.lang.Object[] params)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     MethodNotFoundException,
     ELException 

    If the expression is a string literal, returns its value coerced to the expected return type of the method signature. If not, returns the result of the method invocation using the specified parameters.

    Parameters:

    context - the evaluation context

    params - the parameters to pass the method or null

    Returns:

    the result of the method invocation or null if void

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    MethodNotFoundException

    ELException