poi-ooxml-full/src/main/xmlschema/org/apache/poi/schemas/markup-compatibility.xsd

<?xml version="1.0" encoding="utf-8"?>
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   contributor license agreements.  See the NOTICE file distributed with
   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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   See the License for the specific language governing permissions and
   limitations under the License.
   ====================================================================
-->
<xsd:schema
	attributeFormDefault="unqualified" elementFormDefault="qualified"
	targetNamespace="http://schemas.openxmlformats.org/markup-compatibility/2006"
	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
	xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	>
	<!-- based on https://github.com/plutext/docx4j/blob/master/xsd/mce/markup-compatibility-2006-MINIMAL.xsd -->

	<!-- This XSD has 2 objectives:
	
		1. round tripping @mc:Ignorable <w:document 
		xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
		xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" 
		mc:Ignorable="w14 w15 wp14"> 
		
		2. enabling AlternateContent to be manipulated 
		in certain elements (in the unusual case where the content model is xsd:any, 
		it doesn't have to be explicitly added) See further ECMA-376, 4th Edition, 
		Office Open XML File Formats Part 3 : Markup Compatibility and Extensibility 
	-->

	<!-- Objective 1 -->
	<xsd:attribute name="Ignorable" type="xsd:string" />


	<!-- Objective 2 -->

	<xsd:attribute name="MustUnderstand" type="xsd:string" />
	<xsd:attribute name="ProcessContent" type="xsd:string" />


	<!-- An AlternateContent element shall contain one or more Choice child 
		elements, optionally followed by a Fallback child element. If present, there 
		shall be only one Fallback element, and it shall follow all Choice elements. -->
	<xsd:element name="AlternateContent">
		<xsd:complexType>
			<xsd:sequence>
				<xsd:element name="Choice" minOccurs="0" maxOccurs="unbounded">
					<xsd:complexType>
						<xsd:sequence>
							<xsd:any minOccurs="0" maxOccurs="unbounded"
								processContents="strict">
							</xsd:any>
						</xsd:sequence>
						<xsd:attribute name="Requires" type="xsd:string"
							use="required" />
						<xsd:attribute ref="mc:Ignorable" use="optional" />
						<xsd:attribute ref="mc:MustUnderstand" use="optional" />
						<xsd:attribute ref="mc:ProcessContent" use="optional" />
					</xsd:complexType>
				</xsd:element>
				<xsd:element name="Fallback" minOccurs="0" maxOccurs="1">
					<xsd:complexType>
						<xsd:sequence>
							<xsd:any minOccurs="0" maxOccurs="unbounded"
								processContents="strict">
							</xsd:any>
						</xsd:sequence>
						<xsd:attribute ref="mc:Ignorable" use="optional" />
						<xsd:attribute ref="mc:MustUnderstand" use="optional" />
						<xsd:attribute ref="mc:ProcessContent" use="optional" />
					</xsd:complexType>
				</xsd:element>
			</xsd:sequence>
			<!-- AlternateContent elements might include the attributes Ignorable, 
				MustUnderstand and ProcessContent described in this Part of ECMA-376. These 
				attributes’ qualified names shall be prefixed when associated with an AlternateContent 
				element. -->
			<xsd:attribute ref="mc:Ignorable" use="optional" />
			<xsd:attribute ref="mc:MustUnderstand" use="optional" />
			<xsd:attribute ref="mc:ProcessContent" use="optional" />
		</xsd:complexType>
	</xsd:element>


</xsd:schema>