org.apache.commons.el
Class ArraySuffix
Represents an operator that obtains a Map entry, an indexed
value, a property value, or an indexed property value of an object.
The following are the rules for evaluating this operator:
Evaluating a[b] (assuming a.b == a["b"])
a is null
return null
b is null
return null
a is Map
!a.containsKey (b)
return null
a.get(b) == null
return null
otherwise
return a.get(b)
a is List or array
coerce b to int (using coercion rules)
coercion couldn't be performed
error
a.get(b) or Array.get(a, b) throws ArrayIndexOutOfBoundsException or IndexOutOfBoundsException
return null
a.get(b) or Array.get(a, b) throws other exception
error
return a.get(b) or Array.get(a, b)
coerce b to String
b is a readable property of a
getter throws an exception
error
otherwise
return result of getter call
otherwise
error
$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $- Nathan Abramson - Art Technology Group
- Shawn Bayern
sNoArgs
(package private) static Object[] sNoArgs
ArraySuffix
public ArraySuffix(Expression pIndex)
Constructor
evaluate
public Object evaluate(Object pValue,
VariableResolver pResolver,
FunctionMapper functions,
Logger pLogger)
throws ELException
Evaluates the expression in the given context, operating on the
given value.
- evaluate in interface ValueSuffix
evaluateIndex
(package private) Object evaluateIndex(VariableResolver pResolver,
FunctionMapper functions,
Logger pLogger)
throws ELException
Gets the value of the index
getExpressionString
public String getExpressionString()
Returns the expression in the expression language syntax
- getExpressionString in interface ValueSuffix
getOperatorSymbol
(package private) String getOperatorSymbol()
Returns the operator symbol
Copyright (c) 2001-2002 - Apache Software Foundation