XML Schema Documentation

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XML Instance Representation:
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Schema Component Representation:
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Target Namespace	None
Element and Attribute Namespaces	Global element and attribute declarations belong to this schema's target namespace. By default, local element declarations belong to this schema's target namespace. By default, local attribute declarations have no namespace.

Prefix	Namespace
xml	http://www.w3.org/XML/1998/namespace
xs	http://www.w3.org/2001/XMLSchema

Schema Component Representation

<xs:schema elementFormDefault="qualified">

...

</xs:schema>

Super-types:	xs:string < ipv4addr (by restriction)
Sub-types:	None

Name	ipv4addr
Content	Base XSD Type: string pattern = [0-9]{2,3}\.[0-9]{2,3}\.[0-9]{1,3}\.[0-9]{1,3}

Schema Component Representation

<xs:simpleType name="ipv4addr">

<xs:restriction base="xs:string">

<xs:pattern value="[0-9]{2,3}\.[0-9]{2,3}\.[0-9]{1,3}\.[0-9]{1,3}"/>

</xs:restriction>

</xs:simpleType>

Super-types:	xs:string < ifaceName (by restriction)
Sub-types:	None

Name	ifaceName
Content	Base XSD Type: string pattern = [a-z]+[0-9]

Schema Component Representation

<xs:simpleType name="ifaceName">

<xs:restriction base="xs:string">

<xs:pattern value="[a-z]+[0-9]"/>

</xs:restriction>

</xs:simpleType>

Super-types:	xs:string < coord (by restriction)
Sub-types:	None

Name	coord
Content	Base XSD Type: string pattern = [0-9]{2} [0-9]{2}\.[0-9]{3}

Schema Component Representation

<xs:simpleType name="coord">

<xs:restriction base="xs:string">

<xs:pattern value="[0-9]{2} [0-9]{2}\.[0-9]{3}"/>

</xs:restriction>

</xs:simpleType>

Name	node
Type	Locally-defined complex type
Nillable	no
Abstract	no

XML Instance Representation

Start Sequence [1..*]

<ethernet> ... </ethernet> [0..*]

<wireless> ... </wireless> [0..*]

End Sequence

</node>

Schema Component Representation

<xs:element name="node">

<xs:complexType>

<xs:sequence>

<xs:sequence maxOccurs="unbounded">

<xs:element ref="ethernet" minOccurs="0" maxOccurs="unbounded"/>

<xs:element ref="wireless" minOccurs="0" maxOccurs="unbounded"/>

</xs:sequence>

<xs:element ref="link" maxOccurs="unbounded"/>

</xs:sequence>

<xs:attributeGroup ref="attlist.node"/>

</xs:complexType>

<-- interface namen zijn uniek binnen een node -->

<xs:key name="ifaceName">

<xs:selector xpath="wireless|ethernet"/>

<xs:field xpath="@iface"/>

</xs:key>

<-- de iface namen waar de link's aan refereren moeten wel bestaan -->

<xs:keyref name="ifaceRef" refer="ifaceName">

<xs:selector xpath="link"/>

<xs:field xpath="@iface"/>

</xs:keyref>

</xs:element>

Name	attlist.node

XML Instance Representation

Schema Component Representation

<xs:attributeGroup name="attlist.node">

<xs:attribute name="name" type="xs:ID" use="required"/>

<xs:attribute name="status" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="up"/>

<xs:enumeration value="down"/>

<xs:enumeration value="planned"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="location" use="required"/>

<xs:attribute name="master_ip" type="ipv4addr"/>

<xs:attribute name="x" type="xs:integer" use="required"/>

<xs:attribute name="y" type="xs:integer" use="required"/>

<xs:attribute name="n" type="coord"/>

<xs:attribute name="e" type="coord"/>

</xs:attributeGroup>

Name	ethernet
Type	Locally-defined complex type
Nillable	no
Abstract	no

XML Instance Representation

Schema Component Representation

<xs:element name="ethernet">

<xs:complexType>

<xs:attributeGroup ref="attlist.ethernet"/>

</xs:complexType>

</xs:element>

Name	attlist.ethernet

XML Instance Representation

Schema Component Representation

<xs:attributeGroup name="attlist.ethernet">

<xs:attribute name="iface" type="ifaceName" use="required"/>

<xs:attribute name="desc" use="required"/>

<xs:attribute name="sdesc"/>

<xs:attribute name="status" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="up"/>

<xs:enumeration value="down"/>

<xs:enumeration value="planned"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

</xs:attributeGroup>

Name	wireless
Type	Locally-defined complex type
Nillable	no
Abstract	no

XML Instance Representation

Schema Component Representation

<xs:element name="wireless">

<xs:complexType>

<xs:attributeGroup ref="attlist.wireless"/>

</xs:complexType>

</xs:element>

Name	attlist.wireless

XML Instance Representation

Schema Component Representation

<xs:attributeGroup name="attlist.wireless">

<xs:attribute name="iface" type="ifaceName" use="required"/>

<xs:attribute name="status" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="up"/>

<xs:enumeration value="down"/>

<xs:enumeration value="planned"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="desc"/>

<xs:attribute name="sdesc"/>

<xs:attribute name="mode" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="a"/>

<xs:enumeration value="b"/>

<xs:enumeration value="g"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<-- ESSID's zijn lowercase en eindigen in wleiden.net -->

<xs:attribute name="essid" use="required">

<xs:simpleType>

<xs:restriction base="xs:string">

<xs:pattern value="[a-z0-9\-]+\.[a-z]+[0-9]*\.wleiden\.net"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="channel">

<xs:simpleType>

<xs:restriction base="xs:integer">

<xs:minInclusive value="1"/>

<xs:maxInclusive value="13"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="polar">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="hor"/>

<xs:enumeration value="ver"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="antenna"/>

<xs:attribute name="gain">

<xs:simpleType>

<xs:restriction base="xs:string">

<xs:pattern value="[0-9]+dBi"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="direction"/>

<xs:attribute name="beamwidth" type="xs:integer"/>

<xs:attribute name="cable"/>

<xs:attribute name="height" type="xs:integer"/>

</xs:attributeGroup>

Name	link
Type	Locally-defined complex type
Nillable	no
Abstract	no

XML Instance Representation

<dhcp_static> ... </dhcp_static> [0..*]

</link>

Schema Component Representation

<xs:element name="link">

<xs:complexType>

<xs:sequence>

<xs:element ref="dhcp_static" minOccurs="0" maxOccurs="unbounded"/>

</xs:sequence>

<xs:attributeGroup ref="attlist.link"/>

</xs:complexType>

</xs:element>

Name	attlist.link

XML Instance Representation

Schema Component Representation

<xs:attributeGroup name="attlist.link">

<xs:attribute name="desc" use="required"/>

<xs:attribute name="status" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="up"/>

<xs:enumeration value="down"/>

<xs:enumeration value="planned"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="sdesc" use="required"/>

<xs:attribute name="iface" use="required"/>

<xs:attribute name="type" use="required">

<xs:simpleType>

<xs:restriction base="xs:token">

<xs:enumeration value="interlink"/>

<xs:enumeration value="public"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="ip" type="ipv4addr" use="required"/>

<xs:attribute name="mask">

<xs:simpleType>

<xs:restriction base="xs:integer">

<xs:minInclusive value="12"/>

<xs:maxInclusive value="32"/>

<xs:pattern value="[0-9]+[^ ]"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="dhcp">

<xs:simpleType>

<xs:restriction base="xs:string">

<xs:pattern value="[0-9]+-[0-9]+"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

</xs:attributeGroup>

Name	dhcp_static
Type	Locally-defined complex type
Nillable	no
Abstract	no

XML Instance Representation

<dhcp_static
name="xs:string (pattern = [a-z0-9]+) [1]"
mac="xs:string (pattern = [0-9a-f][0-9a-f](:[0-9a-f][0-9a-f]){5}) [1]"
addr="ipv4addr [1]"/>

Schema Component Representation

<xs:element name="dhcp_static">

<xs:complexType>

<xs:attributeGroup ref="attlist.dhcp_static"/>

</xs:complexType>

</xs:element>

Name	attlist.dhcp_static

XML Instance Representation

Schema Component Representation

<xs:attributeGroup name="attlist.dhcp_static">

<xs:attribute name="name" use="required">

<xs:simpleType>

<xs:restriction base="xs:string">

<xs:pattern value="[a-z0-9]+"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="mac" use="required">

<xs:simpleType>

<xs:restriction base="xs:string">

<xs:pattern value="[0-9a-f][0-9a-f](:[0-9a-f][0-9a-f]){5}"/>

</xs:restriction>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="addr" type="ipv4addr" use="required"/>

</xs:attributeGroup>

Legend

Complex Type:

Schema Component Type

AusAddress

Schema Component Name

Super-types:	Address < AusAddress (by extension)
Sub-types:	QLDAddress (by restriction)

If this schema component is a type definition, its type hierarchy is shown in a gray-bordered box.

Name	AusAddress
Abstract	no

The table above displays the properties of this schema component.

XML Instance Representation

<... country="Australia">
<unitNo> string </unitNo> [0..1]
<houseNo> string </houseNo> [1]
<street> string </street> [1]
Start Choice[1]
<city> string </city> [1]
<town> string </town> [1]
End Choice
<state> AusStates </state> [1]
<postcode> string <<pattern = [1-9][0-9]{3}>> </postcode> [1]?
</...>

The XML Instance Representation table above shows the schema component's content as an XML instance.

The minimum and maximum occurrence of elements and attributes are provided in square brackets, e.g. [0..1].
Model group information are shown in gray, e.g. Start Choice ... End Choice.
For type derivations, the elements and attributes that have been added to or changed from the base type's content are shown in bold.
If an element/attribute has a fixed value, the fixed value is shown in green, e.g. country="Australia".
Otherwise, the type of the element/attribute is displayed.
- If the element/attribute's type is in the schema, a link is provided to it.
- For local simple type definitions, the constraints are displayed in angle brackets, e.g. <<pattern = [1-9][0-9]{3}>>.
If a local element/attribute has documentation, it will be displayed in a window that pops up when the question mark inside the attribute or next to the element is clicked, e.g. <postcode>.

Schema Component Representation

<complexTypename="AusAddress">
<complexContent>
<extensionbase="Address">
<sequence>
<elementname="state" type="AusStates"/>
<elementname="postcode">
<simpleType>
<restrictionbase="string">
<patternvalue="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attributename="country" type="string" fixed="Australia"/>
</extension>
</complexContent>
</complexType>

The Schema Component Representation table above displays the underlying XML representation of the schema component. (Annotations are not shown.)

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Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

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XML Schema Documentation

Table of Contents

Schema Document Properties

Declared Namespaces

Global Schema Components

Simple Type: ipv4addr

Simple Type: ifaceName

Simple Type: coord

Element: node

Attribute Group: attlist.node

Element: ethernet

Attribute Group: attlist.ethernet

Element: wireless

Attribute Group: attlist.wireless

Element: link

Attribute Group: attlist.link

Element: dhcp_static

Attribute Group: attlist.dhcp_static

Legend

Complex Type:

AusAddress

Glossary