XPath : unexpected exception

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XPath : unexpected exception

XPath : unexpected exception

2003-12-16 - By Fr?d?ric Laurent

Back
Hello

According to the W3C XPath document [*]

substring("12345", -42, 1 div 0) returns "12345"

but the following test (in jython) fails

>>> from org.jdom import *
>>> from org.jdom.xpath import *
>>> xp = XPath.newInstance("substring('12345', -42, 1 div 0)")
>>> print xp.valueOf(Document())
Traceback (innermost last):
File "<console>", line 1, in ?
java.lang.StringIndexOutOfBoundsException

Source code of java.lang.StringIndexOutOfBoundsException

: String index out of range: -43
at java.lang.String

(Unknown Source)
at org.jaxen.function.SubstringFunction.evaluate
(SubstringFunction.java:140)
at org.jaxen.function.SubstringFunction.call(SubstringFunction.java:91)
at org.jaxen.expr.DefaultFunctionCallExpr.evaluate
(DefaultFunctionCallExpr.java:203)
at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:107)
at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:716)
at org.jaxen.BaseXPath.selectSingleNodeForContext(BaseXPath.java:739)
at org.jaxen.BaseXPath.stringValueOf(BaseXPath.java:281)
at org.jaxen.BaseXPath.valueOf(BaseXPath.java:274)
at org.jdom.xpath.JaxenXPath

Source code of org.jdom.xpath.JaxenXPath

(JaxenXPath.java:185)

[*] http://www.w3.org/TR/xpath#function-substring

Should I report to jaxen ?

thanks

--
XPath free testing software : http://lantern.sourceforge.net
Fr?d?ric Laurent http://www.opikanoba.org
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