Axis2 does not understand XSD substitutionGroup
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Key: AXIS2-3224
URL: https://issues.apache.org/jira/browse/AXIS2-3224
Project: Axis 2.0 (Axis2)
Issue Type: Bug
Components: adb, codegen
Affects Versions: 1.2, 1.3
Environment: WinXP, axis2 1.3 snapshot 21.09.2007
Reporter: Boyan Yurukov
I have attached a sample schema and a wsdl. In them there is a couple of
elements that are in the same substitutionGroup as "SomeElementZero". Also we
have a list "SomeElementList" which can hold "SomeElementZero"-s. It should be
possible to insert all the rest elements from the substitutionGroup in the
list, but effectively that does not happen. What the generated java code should
serialize/parse as follows:
...
<inner:SomeElementZero>
<some:SomeElementZero data="bla bla bla" />
<some:SomeElement1 data="bla bla bla" data1="more bla 1"/>
<some:SomeElement2 data="bla bla bla" data1="more bla 2"/>
<some:SomeElement2 data="bla bla bla" data1="more bla 2"/>
</inner:SomeElementZero>
...
And probably xsi:type for each subelement.
However in the generated code, the java class that is responsible for
"SomeElementList" can hold a list of "OneType" which is the type of
"SomeElementZero". Of course the other elements are of a type that is an
extension of this type "OneTypeExtension", so the last can contain the type
java class and not the elements themselves. Since the list java class knows
that it can contain only "SomeElementZero", it assumes that when
serializing/parsing. In that case the code would serialize so:
...
<inner:SomeElementZero>
<some:SomeElementZero data="bla bla bla" xsi:type="some:OneType"/>
<some:SomeElementZero data="bla bla bla" data1="more bla 1"
xsi:type="some:OneTypeExtension"/>
<some:SomeElementZero data="bla bla bla" data1="more bla 2"
xsi:type="some:OneTypeExtension"/>
<some:SomeElementZero data="bla bla bla" data1="more bla 2"
xsi:type="some:OneTypeExtension"/>
</inner:SomeElementZero>
...
One workarround is to define all those types as local for the elements. In that
case each one can put element java objects in the list. Still one has to change
the code since when we serialize the list, it calls directly the "serialize"
method of the subelements and passes the qname "SomeElementZero". We have to
set it to call the .getOMElement().serialize( xmlWriter ), which would take the
local qname of the class itself. However, what I did so far was to change the
list java class to be able to hold the element implementation, to detect their
type and to serialize them accordingly.
There are similar problems in parsing.
This explanation may be somewhat blurry, but the case is very specific and hard
to explain. Please check the attached files for examples.
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