hi,
i found some confusing information regarding the usage of xsi:nil to
indicate if an obejct or value is null.
on the mailing list i found the following entry:
[jibx-users] JiBX 1.1 beta4 release
Dennis Sosnoski
Thu, 25 May 2006 21:26:05 -0700
4. Added nillable attribute to object group and value element,
supporting the xsi:nil attribute at runtime (requires element name,
not allowed on abstract mapping)
in the docs i found out that the value element doesn't support
nillable=true. interestingly i can add that to my binding and it
compiles well. but when it comes to runtime, i get a weird exception:
java.lang.IndexOutOfBoundsException: only START_TAG can have
attributes END_TAG seen ...</street>\r\n\t\t<city xsi:nil="true" /
>... @10:26
at org.xmlpull.mxp1.MXParser.getAttributeValue(MXParser.java:927)
at org.jibx.runtime.impl.XMLPullReaderFactory
$XMLPullReader.getAttributeValue(XMLPullReaderFactory.java:395)
at org.jibx.runtime.impl.UnmarshallingContext.getAttributeValue
(UnmarshallingContext.java:356)
at org.jibx.runtime.impl.UnmarshallingContext.attributeBoolean
(UnmarshallingContext.java:1881)
at
data.Address.JiBX_C__JavaDev322_JiXB_Test_src_customer_binding_unmarshal
_1_1(Address.java)
at
data.Customer.JiBX_C__JavaDev322_JiXB_Test_src_customer_binding_unmarsha
l_1_2(Customer.java)
at
data.JiBX_C__JavaDev322_JiXB_Test_src_customer_bindingCustomer_access1.u
nmarshal()
at org.jibx.runtime.impl.UnmarshallingContext.unmarshalElement
(UnmarshallingContext.java:2537)
at org.jibx.runtime.impl.UnmarshallingContext.unmarshalDocument
(UnmarshallingContext.java:2680)
at test.CustomerWAddressTest.main(CustomerWAddressTest.java:23)
i don't get this is i remove 'nillable=true' from the binding, but
then of course the value is not null, it's an empty string (which
means something different in our case).
here's the binding:
<?xml version="1.0" encoding="ISO-8859-2"?>
<binding>
<mapping name="customer" class="data.Customer" flexible="true"
ordered="false" allow-repeats="true">
<value name="id" set-method="setJiXBId" get-method="getJiXBId"/>
<value name="first" set-method="setJiXBFirstName" get-
method="getJiXBFirstName"/>
<value name="last" set-method="setJiXBLastName" get-
method="getJiXBLastName"/>
<!-- <collection field="addresses" flexible="true" ordered="false">
-->
<structure name="address" type="data.Address" allow-repeats="true"
flexible="true" ordered="false" set-method="addAddress" get-
method="getAddress">
<value name="id" set-method="setJiXBId"
get-method="getJiXBId"/>
<value name="street" set-method="setJiXBStreet" get-
method="getJiXBStreet" usage="optional"/>
<value name="city" set-method="setJiXBCity" get-
method="getJiXBCity" usage="optional" nillable="true"/>
</structure>
<!-- </collection> -->
</mapping>
</binding>
and here's the example data:
<?xml version="1.0" encoding="ISO-8859-2"?>
<customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<id>1234</id>
<first>Heinz</first>
<last>Prueller</last>
<asdasd>asasd</asdasd>
<address>
<id>111</id>
<street>Daham 1</street>
<city xsi:nil="true" />
</address>
</customer>
so do i need to change something in my binding? could i use structure
instead of value (and if how can i do that)?
br,
günther
--
Günther Wieser
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