[2.0]XML schema validation seems too strict

[etshy]

BC Break Report

Q	A
BC Break	yes
Version	2.0.1

Summary/Reproduce

• Update my composer.json to use 2.0 (ODM bundle 4.0)
• run composer update
• XML Schema validation throw an exception about this line

        <field name="slug" type="string">
            <gedmo:slug unique="true" fields="name" updatable="true"/>
        </field>

I think it comes from the gedmo line to add the slug behavior.
The thing is it's impossible to add a content element from another .xsd (from the xmlns:gedmo="http://gediminasm.org/schemas/orm/doctrine-extensions-mapping" in this case).
I tried for another issue about xsd few months ago.
So, this issued can't be resolved in the gedmo repo.

I don't know if it's possible, but maybe the validation should be less strict ?

Previous behavior

There wasn't any error about that line in previous versions

Current behavior

throw XML schama validation exception during composer update

File

I paste here my whole xml mapping file, if that could help

<?xml version="1.0" encoding="UTF-8"?>
<doctrine-mongo-mapping xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                        xmlns="http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping"
                        xmlns:gedmo="http://gediminasm.org/schemas/orm/doctrine-extensions-mapping"
                        xsi:schemaLocation="http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping
                http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping.xsd">
    <document name="App\Model\Persistence\Series" repository-class="App\Model\ODM\Repository\SeriesRepository">
        <field name="name" type="string"/>
        <field name="additionalNames" type="string"/>
        <field name="slug" type="string">
            <gedmo:slug unique="true" fields="name" updatable="true"/>
        </field>
        <field name="author" type="string"/>
        <field name="artist" type="string"/>
        <field name="description" type="string"/>
        <field name="adult" type="bool"/>
        <field name="visible" type="bool"/>
        <field name="customTitle" type="string"/>

        <embed-one field="readerSettings" target-document="App\Model\Persistence\ReaderSettings">
        </embed-one>
        <reference-one field="image" target-document="App\Model\Persistence\Files\Image" store-as="ref">
        </reference-one>
        <reference-many field="chapters" target-document="App\Model\Persistence\Chapter" mapped-by="series"
                        strategy="atomicSetArray" store-as="ref">
        </reference-many>
        <reference-many field="teams" target-document="App\Model\Persistence\Team" mapped-by="teams"
                        strategy="atomicSetArray" store-as="ref">
            <sort>
                <sort field="name" order="asc"/>
            </sort>
        </reference-many>

    </document>
</doctrine-mongo-mapping>

[alcaeus]

That's not good. I'll take a look during the day. Thanks for providing a file I can test this with 👍

[alcaeus]

After taking a look, this is somewhat intended, with a few unintended consequences. We've decided to validate the mapping files against our schema, which makes sense as it catches errors in the schema definition that could otherwise lead to other errors when interpreting the mapping.

When adding the mappings for the Gedmo extension to the field mapping, the following validation errors occur (for the field mapping including a gedmo:slug element:

The mapping file /Users/alcaeus/Code/doctrine/mongodb-odm/tests/Doctrine/ODM/MongoDB/Tests/Mapping/xml/Doctrine.ODM.MongoDB.Tests.Mapping.MultipleNamespacesMappingDocument.dcm.xml is invalid:
Line 12:0: Element '{http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping}field': Character content is not allowed, because the content type is empty.
Line 12:0: Element '{http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping}field': Element content is not allowed, because the content type is empty.

Our schema doesn't allow adding any additional content in elements, which includes elements from other namespaces. To allow this, ORM used an xs:any element in every type, but this was removed for 3.0: doctrine/orm@af0b0db. ODM never had such a mechanism, but since mapping files weren't validated against the schema, this was never caught.

My opinion is that these extra mappings should not just be somewhere in the ODM mappings. Instead, the extensions should be mapped in their own files to be independent from the main ODM mappings.

Alternatively, if one were to insist on having all these in one file, a separate XSD that extends the default ODM type definitions would be necessary. While it would be easy to allow configuring the schema file that is used for validation in the XML driver, I'm not sure how we could allow that and still verify that the mappings are in a format that we understand.

While you are using 1.x, you'll have to ignore these deprecations, as there isn't a lot you can do about it (apart from dropping the gedmo mappings from your ODM mapping files). I'm aware that this is a very hard BC break, and I'm happy to work with the Gedmo developers on finding a solution that works for the users, but I don't know what such a solution would look like.

[alcaeus]

Cross-referencing with doctrine-extensions/DoctrineExtensions#2055.

[alcaeus]

Closing as this issue needs to be fixed upstream.