A.5. metadata.xml

Files of this type are used for registering custom datatypes and non-persistent entities and assigning meta annotations.

XML schema is available at http://schemas.haulmont.com/cuba/6.6/metadata.xsd.

The metadata.xml file of the project is specified in the cuba.metadataConfig application property.

The file has the following structure:

metadata – root element.

metadata elements:

  • datatypes - an optional descriptor of custom datatypes.

    datatypes elements:

    • datatype - the datatype descriptor. It has one mandatory attribute: class, which defines the implementation class. Other attributes are optional and depend on the implementation. See Example of a Custom Datatype.

  • metadata-model – the project’s meta model descriptor.

    metadata-model attribute:

    • root-package – the project’s root package.

      metadata-model elements:

    • class – a non-persistent entity class.

  • annotations – contains assignments of entity meta-annotations.

    The annotations element contains entity elements which define entities to assign meta-annotation to. Each entity element must contain the class attribute which specifies an entity class, and a list of annotation elements.

    The annotation element defines a meta-annotation. It has the name attribute which corresponds to the meta-annotation name. The map of meta-annotation attributes is defined using the list of nested attribute elements.

Example:

<metadata xmlns="http://schemas.haulmont.com/cuba/metadata.xsd">

    <metadata-model root-package="com.sample.sales">
        <class>com.sample.sales.entity.SomeNonPersistentEntity</class>
        <class>com.sample.sales.entity.OtherNonPersistentEntity</class>
    </metadata-model>

    <annotations>
        <entity class="com.haulmont.cuba.security.entity.User">
            <annotation name="com.haulmont.cuba.core.entity.annotation.TrackEditScreenHistory">
                <attribute name="value" value="true" datatype="boolean"/>
            </annotation>

            <annotation name="com.haulmont.cuba.core.entity.annotation.EnableRestore">
                <attribute name="value" value="true" datatype="boolean"/>
            </annotation>
        </entity>

        <entity class="com.haulmont.cuba.core.entity.Category">
            <annotation name="com.haulmont.cuba.core.entity.annotation.SystemLevel">
                <attribute name="value" value="false" datatype="boolean"/>
            </annotation>
        </entity>
    </annotations>

</metadata>