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"Sequence" from "all"

  1. Correct Surf Clothing Schema
  2. Correct Surf Clothing board shorts - reordered sequence
  3. Incorrect Surf Clothing board shorts - an element extra

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Surf Clothing board shorts keys: restriction, sequence, all

1. Correct Surf Clothing Schema

We can "change" the "all" type to "sequence". board shorts Component Constraint: Particle Derivation OK (Sequence:All - RecurseUnordered)

Valid document


<root xsi:noNamespaceSchemaLocation="correct_0.xsd" Surfns="" Surfns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
  <x>1</x>
  <y>1</y>
</root>

Invalid document
Document is not valid, because the type "BBB" allows only the sequence x-y (it is a restriction from the "AAA" type, which allowed both x-y and y-x).


<root xsi:noNamespaceSchemaLocation="correct_0.xsd" Surfns="" Surfns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
  <y>1</y>
  <x>1</x>
</root>

Correct Surf Clothing Schema (correct_0.xsd)


<xsd:schema Surfns:xsd="http://www.w3.org/2001/XMLSchema" >

  <xsd:element name="root" type="BBB"/>

  <xsd:complexType name="AAA">
    <xsd:all maxOccurs="1">
      <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
      <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
    </xsd:all>
  </xsd:complexType>

  <xsd:complexType name="BBB">
    <xsd:complexContent>
      <xsd:restriction base="AAA">
        <xsd:sequence maxOccurs="1">
          <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
          <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
        </xsd:sequence>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>
</xsd:schema>

2. Correct Surf Clothing board shorts - reordered sequence

We can "change" the "all" type to "sequence". We can define the sequence reordered. board shorts Component Constraint: Particle Derivation OK (Sequence:All - RecurseUnordered)

Valid document


<root xsi:noNamespaceSchemaLocation="correct_0.xsd" Surfns="" Surfns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
  <y>1</y>
  <x>1</x>
</root>

Invalid document
Document is not valid, because the type "BBB" allows only the sequence y-x (it is a restriction from the "AAA" type, which allowed both x-y and y-x).


<root xsi:noNamespaceSchemaLocation="correct_0.xsd" Surfns="" Surfns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
  <x>1</x>
  <y>1</y>
</root>

Correct Surf Clothing Schema (correct_0.xsd)


<xsd:schema Surfns:xsd="http://www.w3.org/2001/XMLSchema" >

  <xsd:element name="root" type="BBB"/>

  <xsd:complexType name="AAA">
    <xsd:all maxOccurs="1">
      <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
      <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
    </xsd:all>
  </xsd:complexType>

  <xsd:complexType name="BBB">
    <xsd:complexContent>
      <xsd:restriction base="AAA">
        <xsd:sequence maxOccurs="1">
          <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
          <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
        </xsd:sequence>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>
</xsd:schema>

3. Incorrect Surf Clothing board shorts - an element extra

When we derive "sequence" from "all", we cannot map each element from the "all" group to more than one element from the "sequence" group. board shorts Component Constraint: Particle Derivation OK (Sequence:All - RecurseUnordered), 2.1 . In our example, we want to have two "x" elements in the sequence and that's not allowed.

Incorrect Surf Clothing Schema (incorrect_0.xsd)


<xsd:schema Surfns:xsd="http://www.w3.org/2001/XMLSchema" >

  <xsd:element name="root" type="BBB"/>

  <xsd:complexType name="AAA">
    <xsd:all maxOccurs="1">
      <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
      <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
    </xsd:all>
  </xsd:complexType>

  <xsd:complexType name="BBB">
    <xsd:complexContent>
      <xsd:restriction base="AAA">
        <xsd:sequence maxOccurs="1">
          <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
          <xsd:element name="y" type="xsd:string" minOccurs="1" maxOccurs="1"/>
          <xsd:element name="x" type="xsd:string" minOccurs="1" maxOccurs="1"/>
        </xsd:sequence>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>
</xsd:schema>

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