WSDL2Java (via Eclipse plugin) generates code with a bug
--------------------------------------------------------
Key: AXIS2-768
URL: http://issues.apache.org/jira/browse/AXIS2-768
Project: Apache Axis 2.0 (Axis2)
Type: Bug
Environment: Windows XP Pro, SP2
Axis2 (version 1.0), Eclipse plugin version 1.0
Eclipse 3.1.2
Reporter: Peter Smith
[Still new to web services.]
I generated some client code, sync style only, with adb binding.
Error occurs when running client (service-consuming) code generated by the
Eclipse plugin:
"java.lang.RuntimeException: java.lang.RuntimeException: Unexpected
subelement StadiumInfo"
WSDL location here (
http://www.xmethods.com/ve2/ViewListing.po;jsessionid=WKLq4DIo6x-jHNRE5dafpPhj(QHyMHiRM)?key=uuid:2ED51A61-68E6-90ED-45B7-E318C299C8C5
), or here ( http://tinyurl.com/ltook ).
The xml being consumed looks like this (snippet):
==========================================
<soap:Body>
<m:AllGamesResponse xmlns:m="http://www.dataaccess.nl/wk2006";>
<m:AllGamesResult>
<m:tGamesInfo>
<m:sDescription>Round 1</m:sDescription>
<m:dPlayDate>2006-06-09</m:dPlayDate>
<m:tPlayTime>18:00:00</m:tPlayTime>
<m:StadiumInfo>
<m:sStadiumName>FIFA World Cup Stadium Munich</m:sStadiumName>
<m:iSeatsCapacity>59416</m:iSeatsCapacity>
<m:sCityName>Munich</m:sCityName>
</m:StadiumInfo>
<m:Team1>
<m:sName>Germany</m:sName>
<m:sCountryFlag>http://www.dataaccess.nl/wk2006/flags/GERMANY_.jpg</m:sCountryFlag>
</m:Team1>
<m:Team2>
<m:sName>Costa Rica</m:sName>
<m:sCountryFlag>http://www.dataaccess.nl/wk2006/flags/COSTA___.jpg</m:sCountryFlag>
</m:Team2>
<m:sResult>U</m:sResult>
<m:sScore />
<m:iYellowCards>0</m:iYellowCards>
...
==========================================
Things go well until 'Team1' (the second complextype) is about to be processed,
at which point the 'unexpected subelement' runtime exception occurs.
I'll dive in and take a gander at what's going on - please forgive. It seems
the generated code is unaware of the nested/complex nature of the 'StadiumInfo'
element as relates to advancing to the next starting element, so when it tries
to 'climb out/up' the tree to find the next sibling, it doesn't make it. So,
instead of being positioned at the closing 'StadiumInfo' tag upon returning
from parsing the 'StadiumInfo' element, it is somewhere a bit deeper - maybe at
the whitespace just before the closing 'StadiumInfo' tag. The pre-ordained
sequential processing means that the next element sought, in our case 'Team1',
will not be found and the RuntimeException occurs.
I was able to get past this error in a couple of ways:
1) Adding a couple more 'reader.next();' statements just above the test looking
for the start of the next element. These statements must be inserted after
processing all complex types.
2) Changing the 'reader.next()' paradigm into one that doesn't pay any
attention to depth level or complex types, but just looks at every 'next()'
element until it satisfies the conditions we're looking for - that is, that the
next starting element we find has the name we want.
Here is the generated code for a typical (simple/not-complex) element.
// do certain number of 'reader.next()' calls to skip
whitespace/comments/etc., then hope you're in the right place in the tree (my
comment)
if (reader.isStartElement() &&
new javax.xml.namespace.QName(
"http://www.dataaccess.nl/wk2006";,
"sDescription").equals(
reader.getName())) {
// process the current element (my comment)
java.lang.String content = getElementTextProperly(reader);
object.setSDescription(org.apache.axis2.databinding.utils.ConverterUtil.convertTostring(
content));
And here is another way that I hacked the generated code to get it going:
// what is the qualified name of the next element we're looking
for? (my comment)
javax.xml.namespace.QName qname = new
javax.xml.namespace.QName("http://www.dataaccess.nl/wk2006";, "sDescription");
// keep moving ahead until you find the element you're looking
for (my comment)
while ( ! ( reader.isStartElement() &&
qname.equals(reader.getName())) ){
reader.next();
}
// process the current element (my comment)
java.lang.String content = getElementTextProperly(reader);
object.setSDescription(org.apache.axis2.databinding.utils.ConverterUtil.convertTostring(
content));
That's it.
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