(sorry for missing identifier in last post)
hello,
first of all let me say that JXPath is a really cool piece of software -
that's why we decided to use it ;)
but currently i had a hard time with it, struggling two days to make
sense of some strange behaviours with executing XPathes on plain DOM:
i'm running JDK 1.3.1 with Xerces 2.0.1 and use the 1.0 version of
JXPath (unfortunately i had problems with building the current the
latest cvs code due to problems in the jdom package - wrong jdom version?)
let me describe the problem. i wrote 2 very simple Junit tests to track
down the problem:
test 1
---------------------------------
i'm using the following input xml...
<?xml version="1.0" encoding="iso-8859-1"?>
<instance xmlns:my="test">
<my:order>
<my:item my:money="50">
<my:amount>500</my:amount>
<my:discount>100</my:discount>
</my:item>
</my:order>
</instance>
the code
--------------------------------
Document doc=getXmlResource("instance.xml");
JXPathContext context= JXPathContext.newContext(doc);
Boolean b=(Boolean)context.getValue
("boolean(//my:item/my:discount[../my:money > 100])");
assertTrue(b.equals(Boolean.FALSE));
b=(Boolean)context.getValue
("boolean(//my:item/my:discount[../@my:money > 10])");
assertTrue(b.equals(Boolean.TRUE));
This snippet works as expected and evaluates the first expression to
false and the second to true. That would be exactly what i need.
but now look at this ..........
test 2
------------------------------------
<?xml version="1.0" encoding="iso-8859-1"?>
<html xmlns:xforms="xforms">
<head>
<xforms:model>
<xforms:instance>
<payment>
<test method="cc">
<number>123</number>
<expiry></expiry>
</test>
</payment>
</xforms:instance>
<xforms:submission
xforms:action="http://example.com/submit"; xforms:method="post"/>
<xforms:bind xforms:id="b1" xforms:nodeset="/payment/number"
xforms:required="true()" xforms:type="integer"/>
<xforms:bind xforms:id="b2"
xforms:nodeset="/payment/test/expiry"
xforms:relevant="../number = '123'"
xforms:required="true()" xforms:type="string"/>
</xforms:model>
</head>
<body/>
</html>
and the code
Document doc=getXmlResource("relevant1.xml");
JXPathContext context= JXPathContext.newContext(doc);
System.out.println("result: " + context.getValue
("boolean(//payment/test/expiry[../@method='cc'])"));
as i see it, this expression should return 'true' (checked this with
other XPathTester) cause the parent of node 'expiry' has a attribute
with the value 'cc'.
interestingly, when i add a text-node to the <expiry> element the
expression evaluates correctly. moreover the first test does not show
this error but i tried hard and unsuccessfully to find out a reason why
these documents are handled differently.
cause JXPath is a really important part of our software any help would
be greatly welcome. i'm running out of ideas....
Joern Turner
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- Re: [JXPath] Urgent problem with xpath evaluations on DO... joern turner
- Re: [JXPath] Urgent problem with xpath evaluations ... Dmitri Plotnikov
- Re: [JXPath] Urgent problem with xpath evaluati... Dmitri Plotnikov
