0.10/metadata/src/main/conf/cas.metadata.xsd

<?xml version="1.0" encoding="UTF-8"?>
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  this work for additional information regarding copyright ownership.
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  (the "License"); you may not use this file except in compliance with
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      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
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  limitations under the License.
-->
<!--
 A Multi-valued, generic Metadata container schema. The class uses a map of 
 string keys pointing to vectors of strings. The data structure looks like 
 the following: 

 [std:string key]=><std:vector of std:strings>

 The multi-valued nature of the class is handled transparently by this Metadata
 container. Since all values are stored internally as string vectors, the difference
 between a scalar value and a non-scalar is handled by determing whether the list of
 values for a particular key is greater than 1. 
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
	<xs:element name="key" type="xs:string"/>
	<xs:complexType name="keyvalType">
		<xs:sequence>
			<xs:element ref="key"/>
			<xs:element ref="val" maxOccurs="unbounded"/>
		</xs:sequence>
	</xs:complexType>
	<xs:element name="metadata">
		<xs:complexType>
			<xs:sequence minOccurs="0" maxOccurs="unbounded">
				<xs:element name="keyval" type="keyvalType"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:element name="val" type="xs:string"/>
</xs:schema>