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We want to have the root element to be named "AAA", from null namespace and contains two patterns in any order. The first pattern is a sequence of "BBB" and "CCC" elements, the second one is a sequence of "XXX" and "YYY" element. The element "choice" allows one of the cases: either the sequence "myFirstSequence"-"mySecondSequence" or "mySecondSequence"-"myFirstSequence".
Valid document <AAA xsi:noNamespaceSchemaLocation="correct_0.xsd" xmlns="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > <BBB>111</BBB> <CCC>xxx</CCC> <XXX>1</XXX> <YYY>2</YYY> </AAA> Valid document <AAA xsi:noNamespaceSchemaLocation="correct_0.xsd" xmlns="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > <XXX>1</XXX> <YYY>2</YYY> <BBB>111</BBB> <CCC>xxx</CCC> </AAA> |
Correct XML Schema (correct_0.xsd) <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" > <xsd:element name="AAA"> <xsd:complexType mixed="false"> <xsd:choice> <xsd:sequence> <xsd:group ref="myFirstSequence" minOccurs="1" maxOccurs="1"/> <xsd:group ref="mySecondSequence" minOccurs="1" maxOccurs="1"/> </xsd:sequence> <xsd:sequence> <xsd:group ref="mySecondSequence" minOccurs="1" maxOccurs="1"/> <xsd:group ref="myFirstSequence" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:choice> </xsd:complexType> </xsd:element> <xsd:group name="myFirstSequence"> <xsd:sequence> <xsd:element name="BBB" type="xsd:string" minOccurs="1"/> <xsd:element name="CCC" type="xsd:string" minOccurs="1"/> </xsd:sequence> </xsd:group> <xsd:group name="mySecondSequence"> <xsd:sequence> <xsd:element name="XXX" type="xsd:string" minOccurs="1"/> <xsd:element name="YYY" type="xsd:string" minOccurs="1"/> </xsd:sequence> </xsd:group> </xsd:schema> |
The element "choice" allows one of the cases: either the sequence "myFirstSequence"-"mySecondSequence" or "mySecondSequence"-"myFirstSequence".
Valid document <AAA xmlns=""> <BBB>111</BBB> <CCC>xxx</CCC> <XXX>1</XXX> <YYY>2</YYY> </AAA> Valid document <AAA xmlns=""> <XXX>1</XXX> <YYY>2</YYY> <BBB>111</BBB> <CCC>xxx</CCC> </AAA> Invalid document <AAA xmlns=""> <BBB>111</BBB> </AAA> Invalid document <AAA xmlns=""/> Invalid document <AAA xmlns=""> <BBB>111</BBB> <XXX>1</XXX> <CCC>aaa</CCC> <YYY>2</YYY> </AAA> |
Correct Relax NG schema (correctRelax_0.rng) <grammar xmlns="http://relaxng.org/ns/structure/1.0" > <start> <element> <name ns="">AAA</name> <choice> <group> <ref name="myFirstSequence"/> <ref name="mySecondSequence"/> </group> <group> <ref name="mySecondSequence"/> <ref name="myFirstSequence"/> </group> </choice> </element> </start> <define name="myFirstSequence"> <group> <element> <name>BBB</name> <text/> </element> <element> <name>CCC</name> <text/> </element> </group> </define> <define name="mySecondSequence"> <group> <element> <name>XXX</name> <text/> </element> <element> <name>YYY</name> <text/> </element> </group> </define> </grammar> |