Bugs item #1116471, was opened at 2005-02-04 22:06
Message generated for change (Comment added) made by maartenc
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=116035&aid=1116471&group_id=16035
Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Steve Carter (cart33)
>Assigned to: Maarten Coene (maartenc)
Summary: Problem with XPath and retrieving text
Initial Comment:
I have a Junit test similar to the following:
public void test() {
fiinal String XML = "<a><b>Water T &
D-46816</b></a>";
final String XPATH = "a/b/text()";
final String EXPECTED_VALUE = "Water T & D-46816";
XPath xpathObj = createXpathObject(XPATH );
Document doc = createDocument(XML );
Object node = xpathObj.selectSingleNode(doc);
if (node instanceof Text) {
result = ((Text) node).getText();
}
assertEquals(EXPECTED_VALUE, result));
}
which fails because getText() only returns: Water T
interrogating the node object returned from
selectSingleNode indicates that the expected result is
present as 3 seperate text elements in the content
(ArrayList) member variable
I can retrieve the value if I tweak the approach to use:
final String XPATH = "a/b";
if (node instanceof Element) {
return (String) ((Element) node).getData();
}
If i dont have entity references then the first
approach always works. Therefore this seems to be a
bug, please correct me if i am wrong.
----------------------------------------------------------------------
>Comment By: Maarten Coene (maartenc)
Date: 2005-02-12 15:57
Message:
Logged In: YES
user_id=178745
I don't think this is a bug.
The following happened:
expression "a/b/text()" selects all text nodes of <b>.
Because you have an entity reference in it, the SAX parser
you have used did create 3 text nodes: "Water T ", "&" and "
D-46816". The selectSingleNode() method returns the first
node: "Water T ". So this is correct.
expression "a/b" selects all <b> elements. If you apply the
string function to it, you will retrieve the string-value of
the <b> element. This expression should do the trick:
"string(a/b[1])", as illustrated by the example below:
String xml = "<a><b>Water T & D-46816</b></a>";
Document doc = DocumentHelper.parseText(xml);
String result = (String) doc.selectObject("string(a/b[1])");
now, result is equal to "Water T & D-46816"
Another way is to retrieve the node and ask for the
string-value directly on the node:
Node node = doc.selectSingleNode("a/b");
String result = node.getStringValue();
I hope this helped you out. If you still feel this is a bug,
please tell me otherwise I'll close this issue.
regards,
Maarten
----------------------------------------------------------------------
Comment By: Nobody/Anonymous (nobody)
Date: 2005-02-10 18:49
Message:
Logged In: NO
This problem affects other xpath query types sch as /a/b/*
etc...
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=116035&aid=1116471&group_id=16035
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