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| − | {{EclipseLink_UserGuide
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| − | |info=y
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| − | |toc=n
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| − | |eclipselink=y
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| − | |eclipselinktype=JPA
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| − | |examples=y
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| − | |example=*[[EclipseLink/Examples/JPA/EclipseLink-ORM.XML|EclipseLink-ORM.XML]]
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| − | *[[EclipseLink/Examples/JPA/EmployeeXML|Employee application]]
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| − | }}
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| − | =Specifying EclipseLink Object-Relational Mappings Using eclipselink-orm.xml=
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| − | You can use EclipseLink’s native metadata XML file, <tt>eclipselink-orm.xml</tt>, to override mappings defined in JPA’s configuration file <tt>orm.xml</tt> and to provide extended ORM features.
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| − | {{EclipseLink_Note
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| − | |note=Using the <tt>eclipselink-orm.xml</tt> mapping file enables many EclipseLink advanced features, but it may prevent the persistence unit from being portable to other JPA implementations.}}
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| − | The <tt>eclipselink-orm.xml</tt> file defines object-relational mapping metadata for EclipseLink. It is built from the existing [[EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/orm.xml|orm.xml file]] which makes it more intuitive, requires minimum configuration, and makes it easy to override.
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| − | {{EclipseLink_Spec
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| − | |link=
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| − | |section=Section 12.2 "XML Overriding Rules"
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| − | }}
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| − | See [[EclipseLink/XSDs]] for the <tt>eclipselink-orm.xsd</tt> schema.
| + | '''[[Image:Elug_draft_icon.png|Warning]] See "Specifying EclipseLink Object-XML Mappings Using eclipselink-oxm.xml" in the [http://www.eclipse.org/eclipselink/documentation/ EclipseLink Concepts Guide]''' |
| − | ==Overriding and Merging==
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| − | To override the <tt>orm.xml</tt> file's mapping, you must define the <tt>META-INF/eclipselink-orm.xml</tt> file in the project. When both <tt>orm.xml</tt> and <tt>eclipselink-orm.xml</tt> are specified, the contents of <tt>eclipselink-orm.xml</tt> override <tt>orm.xml</tt> and any other JPA mapping file specified in the persistence unit. If there are overlapping specifications in multiple ORM files, the files are merged if they are no conflicting entities.
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| − | See [[EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/Overriding and Merging|Overriding and Merging]] for more information.
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| − | {{EclipseLink_JPA
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| − | |previous=[[EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/Defaults|Defaults]]
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| − | |next=[[EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/Overriding and Merging|Overriding and Merging]]
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| − | |up=[[EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration|Configuration]]
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| − | |version=2.2.0 DRAFT}}
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See "Specifying EclipseLink Object-XML Mappings Using eclipselink-oxm.xml" in the EclipseLink Concepts Guide