Class ArraySuffix
- java.lang.Object
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- org.apache.taglibs.standard.lang.jstl.ValueSuffix
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- org.apache.taglibs.standard.lang.jstl.ArraySuffix
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- Direct Known Subclasses:
PropertySuffix
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: kchung $
- Author:
- Nathan Abramson - Art Technology Group, Shawn Bayern
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Constructor Summary
Constructors Constructor Description ArraySuffix(Expression pIndex)
Constructor
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Object
evaluate(Object pValue, Object pContext, VariableResolver pResolver, Map functions, String defaultPrefix, Logger pLogger)
Evaluates the expression in the given context, operating on the given value.String
getExpressionString()
Returns the expression in the expression language syntaxExpression
getIndex()
void
setIndex(Expression pIndex)
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Constructor Detail
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ArraySuffix
public ArraySuffix(Expression pIndex)
Constructor
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Method Detail
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getIndex
public Expression getIndex()
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setIndex
public void setIndex(Expression pIndex)
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getExpressionString
public String getExpressionString()
Returns the expression in the expression language syntax- Specified by:
getExpressionString
in classValueSuffix
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evaluate
public Object evaluate(Object pValue, Object pContext, VariableResolver pResolver, Map functions, String defaultPrefix, Logger pLogger) throws ELException
Evaluates the expression in the given context, operating on the given value.- Specified by:
evaluate
in classValueSuffix
- Throws:
ELException
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