public abstract class ValueExpression
extends Expression 

Since:

2.1

• Constructor Summary

  Constructors

  Constructor and Description
  ValueExpression ()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract java.lang.Class	getExpectedType () Returns the type of this variable after evaluation.
  abstract java.lang.Class	getType (ELContext context) Returns the most general type that a call to setValue(javax.el.ELContext, java.lang.Object) will accept.
  abstract java.lang.Object	getValue (ELContext context) Returns the associated value.
  abstract boolean	isReadOnly (ELContext context) Indicates whether this variable is read-only.
  abstract void	setValue (ELContext context, java.lang.Object value) Sets the associated value.

  • 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

  • ValueExpression

    public ValueExpression()

• Method Detail

  • getValue

    public abstract java.lang.Object getValue(ELContext context)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Returns the associated value.

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • setValue

    public abstract void setValue(ELContext context,
     java.lang.Object value)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     PropertyNotWritableException,
     ELException 

    Sets the associated value.

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    PropertyNotWritableException

    ELException

  • isReadOnly

    public abstract boolean isReadOnly(ELContext context)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Indicates whether this variable is read-only.

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • getType

    public abstract java.lang.Class getType(ELContext context)
     throws java.lang.NullPointerException,
     PropertyNotFoundException,
     ELException 

    Returns the most general type that a call to setValue(javax.el.ELContext, java.lang.Object) will accept.

    Throws:

    java.lang.NullPointerException

    PropertyNotFoundException

    ELException

  • getExpectedType

    public abstract java.lang.Class getExpectedType()

    Returns the type of this variable after evaluation.