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Teneo: Storing null in EAV schema [message #496955]

Wed, 11 November 2009 15:46

Eclipse User

When using Teneo with EAV schema, I seem to be unable to store an EObject if the value for one of its EStructuralFeature's is null. I get the following exception:

org.hibernate.PropertyValueException: not-null property references a null or transient value: EAVSingleEAttributeValueHolder.mandatoryValue

I tried to make the property nullable by adding an annotation to the XSD from which the ecore model is created, eg.

<xsd:element name="Number" type="xsd:integer">
<xsd:annotation>
<xsd:appinfo source="teneo.jpa">@Column(name="Number",nullable="true ")</xsd:appinfo>
</xsd:annotation>
</xsd:element>

However, this does not fix the problem. Does anyone know how to make this work?

Re: Teneo: Storing null in EAV schema [message #496956 is a reply to message #496955]

Wed, 11 November 2009 16:01

Eclipse User

Hi Andrew,
With an EAV mapping most (I would even say all) jpa annotations are ignored. In this case (afaics) the xsd element has
minOccurs=1 (the default). This means that for ecore (and Teneo) it is a mandatory feature which must have a value. The
EAVSingleEAttributeValueHolder.mandatoryValue field is used to enforce required/mandatory constraints.

So in this case it can be solved by adding minOccurs="0" to the xsd element.

gr. Martin

Andrew wrote:
> When using Teneo with EAV schema, I seem to be unable to store an
> EObject if the value for one of its EStructuralFeature's is null. I get
> the following exception:
>
> org.hibernate.PropertyValueException: not-null property references a
> null or transient value: EAVSingleEAttributeValueHolder.mandatoryValue
>
> I tried to make the property nullable by adding an annotation to the XSD
> from which the ecore model is created, eg.
>
> <xsd:element name="Number" type="xsd:integer">
> <xsd:annotation>
> <xsd:appinfo source="teneo.jpa">@Column(name="Number",nullable="true
> ")</xsd:appinfo>
> </xsd:annotation>
> </xsd:element>
>
> However, this does not fix the problem. Does anyone know how to make
> this work?

--

With Regards, Martin Taal

Springsite/Elver.org
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Re: Teneo: Storing null in EAV schema [message #496964 is a reply to message #496956]

Wed, 11 November 2009 17:19

Eclipse User

Yes, that fixes it. Thanks!

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