org.apache.commons.el
public class ArraySuffix extends ValueSuffix
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
Version: $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
| Field Summary | |
|---|---|
| Expression | mIndex |
| static Object[] | sNoArgs |
| Constructor Summary | |
|---|---|
| ArraySuffix(Expression pIndex)
Constructor
| |
| Method Summary | |
|---|---|
| Object | evaluate(Object pValue, VariableResolver pResolver, FunctionMapper functions, Logger pLogger)
Evaluates the expression in the given context, operating on the
given value.
|
| Object | evaluateIndex(VariableResolver pResolver, FunctionMapper functions, Logger pLogger)
Gets the value of the index
|
| String | getExpressionString()
Returns the expression in the expression language syntax
|
| Expression | getIndex() |
| String | getOperatorSymbol()
Returns the operator symbol
|
| void | setIndex(Expression pIndex) |