public class ASTArrayAccess extends SimpleNode
children, id, parent, parser
Constructor and Description |
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ASTArrayAccess(int id)
Create the node given an id.
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ASTArrayAccess(Parser p,
int id)
Create a node with the given parser and id.
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Modifier and Type | Method and Description |
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static Object |
evaluateExpr(Object o,
Object loc,
Uberspect uberspect)
Evaluate the Array expression 'loc' on the given object, o.
|
Object |
execute(Object obj,
JexlContext jc)
evaluate array access upon a base object.
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String |
getIdentifierString()
Gets the variable name piece of the expression.
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Object |
jjtAccept(ParserVisitor visitor,
Object data)
Accept the visitor.
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Object |
value(JexlContext jc)
Gets the value of this node.
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childrenAccept, dump, getUberspect, interpret, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, setValue, toString, toString
public ASTArrayAccess(int id)
id
- node id.public ASTArrayAccess(Parser p, int id)
p
- a parser.id
- node id.public Object jjtAccept(ParserVisitor visitor, Object data)
jjtAccept
in interface Node
jjtAccept
in class SimpleNode
visitor
- a ParserVisitor
.data
- data to be passed along to the visitor.ParserVisitor.visit(org.apache.commons.jexl.parser.SimpleNode, java.lang.Object)
public Object execute(Object obj, JexlContext jc) throws Exception
execute
in class SimpleNode
jc
- the JexlContext
to evaluate against.obj
- not used.Exception
- on any errorpublic Object value(JexlContext jc) throws Exception
value
in class SimpleNode
jc
- the context to retrieve values from.Exception
- when evaluating the operands fails.public static Object evaluateExpr(Object o, Object loc, Uberspect uberspect) throws Exception
2
is 'loc' and a
is 'o'.
If o or loc are null, null is returned.
If o is a Map, o.get(loc) is returned.
If o is a List, o.get(loc) is returned. loc must resolve to an int value.
If o is an Array, o[loc] is returned. loc must resolve to an int value.
Otherwise loc is treated as a bean property of o.o
- an object to be accessed using the array operator or '.' operator.loc
- the index of the object to be returned.uberspect
- Uberspector to use during evaluationException
- on any error.public String getIdentifierString()
ASTIdentifier.getIdentifierString().
Copyright © 2014 The Apache Software Foundation. All rights reserved.