metadata-source

Use eclipselink.metadata-source to specify MetadataSource implementation EclipseLink uses to read metadata.

Values

Table 5-61 describes this persistence property's values.

Table 5-61 Valid Values for metadata-source

Value	Description
`XML`	Use `XMLMetadataSource`.
Custom metadata source	A custom class name which implements `MetadataSource`.

Usage

Use this property with eclipselink.metadata-source.xml.file to access an external mapping file at a fixed URL for a persistence unit.

Examples

Example 5-61 shows how to use this property in the persistence.xml file.

Example 5-61 Using metadata-source in persistence.xml

<property name="eclipselink.metadata-source" value="mypackage.MyMetadataSource"/>
<property name="eclipselink.metadata-source.xml.url" value="foo://bar"/>

See Also

For more information, see:

"metadata-source.send-refresh-command"
"metadata-source.xml.file"
Metadata Source Examples
http://wiki.eclipse.org/EclipseLink/Examples/JPA/MetadataSource/
"Extensible Entities"
http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Advanced_JPA_Development/Extensible_Entities
"Using an External Metadata Source" in Solutions Guide for EclispeLink