Cannot generate VMAP classes from xsd

Question

I started a project on github using maven-jaxb2-plugin to generate VMAP classes from the vmap xsd.

The problem I am running into appears to be an issue with the xsd itself.

[ERROR] Error while parsing schema(s).Location [ file:/projects/generate-vmap-example/src/main/resources/vmap.xsd{144,70}].
org.xml.sax.SAXParseException: src-resolve: Cannot resolve the name 'vast:VAST' to a(n) 'element declaration' component.

Everything seems to be setup correctly. vmap.xsd declares the vast namespace and imports the vast xsd.

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vmap="http://www.iab.net/videosuite/vmap" xmlns:vast="http://www.iab.net/videosuite/vast" targetNamespace="http://www.iab.net/videosuite/vmap" attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.0">
    <xs:import namespace="http://www.iab.net/videosuite/vast" schemaLocation="vast3_draft.xsd"/>

The VAST element is used here.

    <xs:complexType name="VASTAdData_type">
        <xs:sequence>
            <xs:element ref="vast:VAST" minOccurs="1" maxOccurs="1"/>
        </xs:sequence>
    </xs:complexType>

Should the vmap xsd be modified for this to work? Why can't it find the VAST element?

You can view the full project here.

score 0 · Answer 1 · edited Jul 14 '23 at 13:45

0

In the vast3_draft.xsd file, if you add these attributs to the root xsd:schema element:

xmlns="http://www.iab.net/videosuite/vast"
targetNamespace="http://www.iab.net/videosuite/vast"

So it becomes this:

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" 
    attributeFormDefault="unqualified" xmlns="http://www.iab.net/videosuite/vast" targetNamespace="http://www.iab.net/videosuite/vast">

Then the vmap.xsd should properly parse when class generation occurs again.

The reason for this error is because in the vmap.xsd schema, it's importing vast3_draft.xsd using the targetNamespace value of http://www.iab.net/videosuite/vast and that namespace isn't anywhere in the vast3_draft.xsd schema. An xs:import element always requires a targetNamespace attribute, so the imported schema needs this as well.

I'm guessing because it has the word 'draft' in the file name, the schema itself might not be complete. If you get a new updated version of the schema you'll have to edit the schema file again if it still doesn't have the above attributes in the xs:schema element.

edited Jul 14 '23 at 13:45

John Mercier

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answered Jul 11 '23 at 22:52

mamift

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Thanks for the help I will try it out. The draft file is actually the official file for this version. The IAB people are just weird like that. – John Mercier Jul 12 '23 at 14:26
This actually causes a new error `[ERROR] Error while parsing schema(s).Location [ file:/projects/generate-vmap-example/src/main/resources/vast3_draft.xsd{21,118}]. org.xml.sax.SAXParseException: src-resolve: Cannot resolve the name 'AdSystem_type' to a(n) 'type definition' component.` I know vast3_draft.xml works on its own to generate classes. – John Mercier Jul 12 '23 at 14:35
I also added the xmlns attribute and got `SAXParseException: A class/interface with the same name "com.github.moaxcp.vast.vmap.ExtensionsType" is already in use. Use a class customization to resolve this conflict.` – John Mercier Jul 13 '23 at 01:10
@JohnMercier Can you update the github project so I can see for myself the changes you made? – mamift Jul 13 '23 at 02:23
Yes it is updated – John Mercier Jul 13 '23 at 16:34

Cannot generate VMAP classes from xsd

1 Answers1