Class ValueRef.NullValueRef
- java.lang.Object
- org.springframework.expression.spel.ast.ValueRef.NullValueRef
- All Implemented Interfaces:
ValueRef
- Enclosing interface:
- ValueRef
public static class ValueRef.NullValueRef extends Object implements ValueRef
A ValueRef for the null value.
Nested Class Summary
Nested classes/interfaces inherited from interface org.springframework.expression.spel.ast.ValueRef
ValueRef.NullValueRef, ValueRef.TypedValueHolderValueRef
Constructor Summary
Constructors Constructor Description NullValueRef()
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description TypedValue
getValue()
Returns the value this ValueRef points to, it should not require expression component re-evaluation.boolean
isWritable()
Indicates whether calling setValue(Object) is supported.void
setValue(Object newValue)
Sets the value this ValueRef points to, it should not require expression component re-evaluation.
Constructor Detail
NullValueRef
public NullValueRef()
Method Detail
getValue
public TypedValue getValue()
Description copied from interface:ValueRef
Returns the value this ValueRef points to, it should not require expression component re-evaluation.
setValue
public void setValue(Object newValue)
Description copied from interface:ValueRef
Sets the value this ValueRef points to, it should not require expression component re-evaluation.
isWritable
public boolean isWritable()
Description copied from interface:ValueRef
Indicates whether calling setValue(Object) is supported.- Specified by:
isWritable
in interfaceValueRef
- Returns:
- true if setValue() is supported for this value reference.