java - One XSD for both whole document and fragment? -

i wish create grammar able validate both full xml document , fragment of it.

i have set of documents aggregate in “batch”. each document has set of meta-data:

<batch>     <document>         <metadata1 />         <metadata2 />         <metadata3 />     </document>     <document>         <metadata1 />         <metadata2 />         <metadata3 />     </document> </batch> 

my springbatch process splits batch in documents (with staxeventitemreader) wish validate sub xml representing single document:

<document>     <metadata1 />     <metadata2 />     <metadata3 /> </document> 

i read here can’t use partial xsd validate xml.

however, is there way, while avoiding duplication, validate 2 xsds, 1 validate fragment, , other validate batch?

you can achieve goal single xsd specifying multiple possible root elements:

<?xml version="1.0" encoding="utf-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema">    <xs:element name="batch">     <xs:complextype>       <xs:sequence>         <xs:element ref="document" maxoccurs="unbounded"/>       </xs:sequence>     </xs:complextype>   </xs:element>    <xs:element name="document">     <xs:complextype>       <xs:sequence>         <xs:element name="metadata1" type="xs:string" />         <xs:element name="metadata2" type="xs:string" />         <xs:element name="metadata3" type="xs:string" />       </xs:sequence>     </xs:complextype>   </xs:element>  </xs:schema> 

this way documents may have either batch or document root element, , there no definition duplication.