xlinks

Table of Contents

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Schema Document Properties

Target Namespacehttp://www.w3.org/1999/xlink
Version3.2.0
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations have no namespace.
  • By default, local attribute declarations have no namespace.
Documentationsee GML 7.2
Application Dataxlinks.xsd
More information at: urn:opengis:specification:gml:schema-xlinks:v3.2.0.

Declared Namespaces

PrefixNamespace
Default namespacehttp://www.w3.org/2001/XMLSchema
xmlhttp://www.w3.org/XML/1998/namespace
xlinkhttp://www.w3.org/1999/xlink
Schema Component Representation
<schema targetNamespace="http://www.w3.org/1999/xlink" version="3.2.0">
...
</schema>
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Global Declarations

Attribute: actuate

Nameactuate
TypeLocally-defined simple type
Documentation The 'actuate' attribute is used to communicate the desired timing of traversal from the starting resource to the ending resource; it's value should be treated as follows: onLoad - traverse to the ending resource immediately on loading the starting resource onRequest - traverse from the starting resource to the ending resource only on a post-loading event triggered for this purpose other - behavior is unconstrained; examine other markup in link for hints none - behavior is unconstrained
XML Instance Representation
xlink:actuate="string (value comes from list: {'onLoad'|'onRequest'|'other'|'none'})"
Schema Component Representation
<attribute name="actuate">
<simpleType>
<restriction base="string">
<enumeration value="onLoad"/>
<enumeration value="onRequest"/>
<enumeration value="other"/>
<enumeration value="none"/>
</restriction>
</simpleType>
</attribute>
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Attribute: arcrole

Namearcrole
TypeanyURI
XML Instance Representation
xlink:arcrole="anyURI"
Schema Component Representation
<attribute name="arcrole" type="anyURI"/>
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Attribute: from

Namefrom
Typestring
XML Instance Representation
xlink:from="string"
Schema Component Representation
<attribute name="from" type="string"/>
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Attribute: href

Namehref
TypeanyURI
XML Instance Representation
xlink:href="anyURI"
Schema Component Representation
<attribute name="href" type="anyURI"/>
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Attribute: label

Namelabel
Typestring
XML Instance Representation
xlink:label="string"
Schema Component Representation
<attribute name="label" type="string"/>
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Attribute: role

Namerole
TypeanyURI
XML Instance Representation
xlink:role="anyURI"
Schema Component Representation
<attribute name="role" type="anyURI"/>
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Attribute: show

Nameshow
TypeLocally-defined simple type
Documentation The 'show' attribute is used to communicate the desired presentation of the ending resource on traversal from the starting resource; it's value should be treated as follows: new - load ending resource in a new window, frame, pane, or other presentation context replace - load the resource in the same window, frame, pane, or other presentation context embed - load ending resource in place of the presentation of the starting resource other - behavior is unconstrained; examine other markup in the link for hints none - behavior is unconstrained
XML Instance Representation
xlink:show="string (value comes from list: {'new'|'replace'|'embed'|'other'|'none'})"
Schema Component Representation
<attribute name="show">
<simpleType>
<restriction base="string">
<enumeration value="new"/>
<enumeration value="replace"/>
<enumeration value="embed"/>
<enumeration value="other"/>
<enumeration value="none"/>
</restriction>
</simpleType>
</attribute>
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Attribute: title

Nametitle
Typestring
XML Instance Representation
xlink:title="string"
Schema Component Representation
<attribute name="title" type="string"/>
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Attribute: to

Nameto
Typestring
XML Instance Representation
xlink:to="string"
Schema Component Representation
<attribute name="to" type="string"/>
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Global Definitions

Attribute Group: arcLink

NamearcLink
XML Instance Representation
Schema Component Representation
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Attribute Group: emptyLink

NameemptyLink
XML Instance Representation
Schema Component Representation
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Attribute Group: extendedLink

NameextendedLink
XML Instance Representation
Schema Component Representation
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Attribute Group: locatorLink

NamelocatorLink
XML Instance Representation
Schema Component Representation
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Attribute Group: resourceLink

NameresourceLink
XML Instance Representation
Schema Component Representation
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Attribute Group: simpleLink

NamesimpleLink
XML Instance Representation
Schema Component Representation
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Attribute Group: titleLink

NametitleLink
XML Instance Representation
Schema Component Representation
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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.
NameAusAddress
Abstractno
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.

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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