XML Schema Documentation

Table of Contents

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Schema Document Properties

Target Namespace None
Version 0.1
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.
Schema Composition
  • This schema includes components from the following schema document(s):
    • gdml_core.xsd
    • gdml_define.xsd
    • gdml_extensions.xsd

Declared Namespaces

Prefix Namespace
xml http://www.w3.org/XML/1998/namespace
gdml http://cern.ch/2001/Schemas/GDML
xs http://www.w3.org/2001/XMLSchema
Schema Component Representation
<xs:schema attributeFormDefault="unqualified" elementFormDefault="unqualified" version="0.1">
<xs:include schemaLocation="gdml_core.xsd"/>
<xs:include schemaLocation="gdml_define.xsd"/>
<xs:include schemaLocation="gdml_extensions.xsd"/>
...
</xs:schema>
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Global Declarations

Element: materials

Name materials
Type Locally-defined complex type
Nillable no
Abstract no
Documentation Materials description
XML Instance Representation
<materials>
Start Choice [1..*]
<loop> ... </loop> [0..*]
<define> defineType </define> [0..1] ?
<isotope> MaterialIsotopeType </isotope> [0..*] ?
<element> MaterialElementType </element> [0..*] ?
<material> MaterialMixtureType </material> [0..*] ?
End Choice
</materials>
Schema Component Representation
<xs:element name="materials">
<xs:complexType>
<xs:choice maxOccurs="unbounded">
<xs:element ref=" loop " maxOccurs="unbounded" minOccurs="0"/>
<xs:element name="define" type=" defineType " minOccurs="0"/>
<xs:element name="isotope" type=" MaterialIsotopeType " maxOccurs="unbounded" minOccurs="0"/>
<xs:element name="element" type=" MaterialElementType " maxOccurs="unbounded" minOccurs="0"/>
<xs:element name="material" type=" MaterialMixtureType " maxOccurs="unbounded" minOccurs="0"/>
</xs:choice>
</xs:complexType>
</xs:element>
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Global Definitions

Attribute Group: MaterialAttributeGroup

Name MaterialAttributeGroup
Documentation General material attributes
XML Instance Representation
name=" xs:ID [1] ?"
formula=" xs:string [0..1] ?"
state=" xs:NMTOKEN (value comes from list: {'gas'|'liquid'|'solid'|'unknown'}) [0..1] ?"
Schema Component Representation
<xs:attributeGroup name="MaterialAttributeGroup">
<xs:attribute name="name" type=" xs:ID " use="required"/>
<xs:attribute name="formula" type=" xs:string " use="optional"/>
<xs:attribute name="state" default="unknown">
<xs:simpleType>
<xs:restriction base=" xs:NMTOKEN ">
<xs:enumeration value="gas"/>
<xs:enumeration value="liquid"/>
<xs:enumeration value="solid"/>
<xs:enumeration value="unknown"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:attributeGroup>
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Complex Type: AtomType

Super-types: QuantityType < AtomType (by restriction)
Sub-types: None
Name AtomType
Abstract no
Documentation Atomic mass, quantity type A, default unit g/mole
XML Instance Representation
<...
unit=" xs:string [0..1]"
type="A [0..1]"/>
Schema Component Representation
<xs:complexType name="AtomType">
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="g/mole"/>
<xs:attribute name="type" type=" xs:string " fixed="A"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
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Complex Type: DensityType

Super-types: QuantityType < DensityType (by restriction)
Sub-types: None
Name DensityType
Abstract no
Documentation Density
XML Instance Representation
<...
unit=" xs:string [0..1]"
type="density [0..1]"/>
Schema Component Representation
<xs:complexType name="DensityType">
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="g/cm3"/>
<xs:attribute name="type" type=" xs:string " fixed="density"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
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Complex Type: MaterialElementType

Super-types: MaterialType < MaterialElementType (by extension)
Sub-types: None
Name MaterialElementType
Abstract no
Documentation Exported material element type
XML Instance Representation
<...
name=" xs:ID [1] ?"
formula=" xs:string [0..1] ?"
state=" xs:NMTOKEN (value comes from list: {'gas'|'liquid'|'solid'|'unknown'}) [0..1] ?"
N=" xs:positiveInteger [0..1] ?"
Z=" xs:double [0..1] ?">
Start Choice [0..1]
<property
name=" xs:string [1]"/> [1..*] ?
End Choice
Start Choice [0..1]
<RL
unit=" xs:string [0..1]"
type="X0 [0..1]"/> [1] ?
<RLref> ReferenceType </RLref> [1] ?
End Choice
Start Choice [0..1]
<AL
unit=" xs:string [0..1]"
type="lambda [0..1]"/> [1] ?
<ALref> ReferenceType </ALref> [1] ?
End Choice
Start Choice [0..1]
<T
unit=" xs:string [0..1]"
type="temperature [0..1]"/> [1] ?
<Tref> ReferenceType </Tref> [1] ?
End Choice
Start Choice [0..1]
<P
unit=" xs:string [0..1]"
type="pressure [0..1]"/> [1] ?
<Pref> ReferenceType </Pref> [1] ?
End Choice
Start Choice [0..1]
<D> DensityType </D> [1] ?
<Dref> ReferenceType </Dref> [1] ?
End Choice
Start Choice [1] ?
<atom> AtomType </atom> [1]
<fraction
n=" xs:double [1]"/> [1..*] ?
End Choice
</...>
Schema Component Representation
<xs:complexType name="MaterialElementType">
<xs:complexContent>
<xs:extension base=" MaterialType ">
<xs:sequence>
<xs:choice minOccurs="0">
<xs:element name="D" type=" DensityType "/>
<xs:element name="Dref" type=" ReferenceType "/>
</xs:choice>
<xs:choice>
<xs:element name="atom" type=" AtomType "/>
<xs:element name="fraction" maxOccurs="unbounded">
<xs:complexType>
<xs:complexContent>
<xs:extension base=" ReferenceType ">
<xs:attribute name="n" type=" xs:double " use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:sequence>
<xs:attribute name="N" type=" xs:positiveInteger " use="optional"/>
<xs:attribute name="Z" type=" xs:double " use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Complex Type: MaterialIsotopeType

Super-types: MaterialType < MaterialIsotopeType (by extension)
Sub-types: None
Name MaterialIsotopeType
Abstract no
Documentation Exported isotope type
XML Instance Representation
<...
name=" xs:ID [1] ?"
formula=" xs:string [0..1] ?"
state=" xs:NMTOKEN (value comes from list: {'gas'|'liquid'|'solid'|'unknown'}) [0..1] ?"
N=" xs:positiveInteger [1] ?"
Z=" xs:double [1] ?">
Start Choice [0..1]
<property
name=" xs:string [1]"/> [1..*] ?
End Choice
Start Choice [0..1]
<RL
unit=" xs:string [0..1]"
type="X0 [0..1]"/> [1] ?
<RLref> ReferenceType </RLref> [1] ?
End Choice
Start Choice [0..1]
<AL
unit=" xs:string [0..1]"
type="lambda [0..1]"/> [1] ?
<ALref> ReferenceType </ALref> [1] ?
End Choice
Start Choice [0..1]
<T
unit=" xs:string [0..1]"
type="temperature [0..1]"/> [1] ?
<Tref> ReferenceType </Tref> [1] ?
End Choice
Start Choice [0..1]
<P
unit=" xs:string [0..1]"
type="pressure [0..1]"/> [1] ?
<Pref> ReferenceType </Pref> [1] ?
End Choice
Start Choice [0..1]
<D> DensityType </D> [1] ?
<Dref> ReferenceType </Dref> [1] ?
End Choice
<atom> AtomType </atom> [1]
</...>
Schema Component Representation
<xs:complexType name="MaterialIsotopeType">
<xs:complexContent>
<xs:extension base=" MaterialType ">
<xs:sequence>
<xs:choice minOccurs="0">
<xs:element name="D" type=" DensityType "/>
<xs:element name="Dref" type=" ReferenceType "/>
</xs:choice>
<xs:element name="atom" type=" AtomType "/>
</xs:sequence>
<xs:attribute name="N" type=" xs:positiveInteger " use="required"/>
<xs:attribute name="Z" type=" xs:double " use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Complex Type: MaterialMixtureType

Super-types: MaterialType < MaterialMixtureType (by extension)
Sub-types: None
Name MaterialMixtureType
Abstract no
Documentation Exported material composite or mixture type
XML Instance Representation
<...
name=" xs:ID [1] ?"
formula=" xs:string [0..1] ?"
state=" xs:NMTOKEN (value comes from list: {'gas'|'liquid'|'solid'|'unknown'}) [0..1] ?"
Z=" xs:double [0..1] ?">
Start Choice [0..1]
<property
name=" xs:string [1]"/> [1..*] ?
End Choice
Start Choice [0..1]
<RL
unit=" xs:string [0..1]"
type="X0 [0..1]"/> [1] ?
<RLref> ReferenceType </RLref> [1] ?
End Choice
Start Choice [0..1]
<AL
unit=" xs:string [0..1]"
type="lambda [0..1]"/> [1] ?
<ALref> ReferenceType </ALref> [1] ?
End Choice
Start Choice [0..1]
<T
unit=" xs:string [0..1]"
type="temperature [0..1]"/> [1] ?
<Tref> ReferenceType </Tref> [1] ?
End Choice
Start Choice [0..1]
<P
unit=" xs:string [0..1]"
type="pressure [0..1]"/> [1] ?
<Pref> ReferenceType </Pref> [1] ?
End Choice
Start Choice [1]
<D> DensityType </D> [1] ?
<Dref> ReferenceType </Dref> [1] ?
End Choice
Start Choice [1] ?
<atom> AtomType </atom> [1]
<composite
n=" xs:positiveInteger [1]"/> [1..*] ?
<fraction
n=" xs:double [1]"/> [1..*] ?
End Choice
</...>
Schema Component Representation
<xs:complexType name="MaterialMixtureType">
<xs:complexContent>
<-- <xs:extension base="ComplexMaterialType"> -->
<xs:extension base=" MaterialType ">
<xs:sequence>
<xs:choice>
<xs:element name="D" type=" DensityType "/>
<xs:element name="Dref" type=" ReferenceType "/>
</xs:choice>
<xs:choice>
<xs:element name="atom" type=" AtomType "/>
<xs:element name="composite" maxOccurs="unbounded">
<xs:complexType>
<xs:complexContent>
<xs:extension base=" ReferenceType ">
<xs:attribute name="n" type=" xs:positiveInteger " use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="fraction" maxOccurs="unbounded">
<xs:complexType>
<xs:complexContent>
<xs:extension base=" ReferenceType ">
<xs:attribute name="n" type=" xs:double " use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:sequence>
<xs:attribute name="Z" type=" xs:double " use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Complex Type: MaterialType

Super-types: None
Sub-types:
Name MaterialType
Abstract no
Documentation Base type for materials
XML Instance Representation
<...
name=" xs:ID [1] ?"
formula=" xs:string [0..1] ?"
state=" xs:NMTOKEN (value comes from list: {'gas'|'liquid'|'solid'|'unknown'}) [0..1] ?">
Start Choice [0..1]
<property
name=" xs:string [1]"/> [1..*] ?
End Choice
Start Choice [0..1]
<RL
unit=" xs:string [0..1]"
type="X0 [0..1]"/> [1] ?
<RLref> ReferenceType </RLref> [1] ?
End Choice
Start Choice [0..1]
<AL
unit=" xs:string [0..1]"
type="lambda [0..1]"/> [1] ?
<ALref> ReferenceType </ALref> [1] ?
End Choice
Start Choice [0..1]
<T
unit=" xs:string [0..1]"
type="temperature [0..1]"/> [1] ?
<Tref> ReferenceType </Tref> [1] ?
End Choice
Start Choice [0..1]
<P
unit=" xs:string [0..1]"
type="pressure [0..1]"/> [1] ?
<Pref> ReferenceType </Pref> [1] ?
End Choice
</...>
Schema Component Representation
<xs:complexType name="MaterialType">
<xs:group ref=" MaterialPropertiesGroup "/>
<xs:attributeGroup ref=" MaterialAttributeGroup "/>
</xs:complexType>
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Model Group: MaterialPropertiesGroup

Name MaterialPropertiesGroup
Documentation General material properties
XML Instance Representation
Start Choice [0..1]
<property
name=" xs:string [1]"/> [1..*] ?
End Choice
Start Choice [0..1]
<RL
unit=" xs:string [0..1]"
type="X0 [0..1]"/> [1] ?
<RLref> ReferenceType </RLref> [1] ?
End Choice
Start Choice [0..1]
<AL
unit=" xs:string [0..1]"
type="lambda [0..1]"/> [1] ?
<ALref> ReferenceType </ALref> [1] ?
End Choice
Start Choice [0..1]
<T
unit=" xs:string [0..1]"
type="temperature [0..1]"/> [1] ?
<Tref> ReferenceType </Tref> [1] ?
End Choice
Start Choice [0..1]
<P
unit=" xs:string [0..1]"
type="pressure [0..1]"/> [1] ?
<Pref> ReferenceType </Pref> [1] ?
End Choice
Schema Component Representation
<xs:group name="MaterialPropertiesGroup">
<xs:sequence>
<xs:choice minOccurs="0">
<xs:element name="property" maxOccurs="unbounded">
<xs:complexType>
<xs:complexContent>
<xs:extension base=" ReferenceType ">
<xs:attribute name="name" type=" xs:string " use="required"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
</xs:choice>
<xs:choice minOccurs="0">
<xs:element name="RL">
<xs:complexType>
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="cm"/>
<xs:attribute name="type" type=" xs:string " fixed="X0"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="RLref" type=" ReferenceType "/>
</xs:choice>
<xs:choice minOccurs="0">
<xs:element name="AL">
<xs:complexType>
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="cm"/>
<xs:attribute name="type" type=" xs:string " fixed="lambda"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="ALref" type=" ReferenceType "/>
</xs:choice>
<xs:choice minOccurs="0">
<xs:element name="T">
<xs:complexType>
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="K"/>
<xs:attribute name="type" type=" xs:string " fixed="temperature"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="Tref" type=" ReferenceType "/>
</xs:choice>
<xs:choice minOccurs="0">
<xs:element name="P">
<xs:complexType>
<xs:complexContent>
<xs:restriction base=" QuantityType ">
<xs:attribute name="unit" type=" xs:string " default="pascal"/>
<xs:attribute name="type" type=" xs:string " fixed="pressure"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="Pref" type=" ReferenceType "/>
</xs:choice>
</xs:sequence>
</xs:group>
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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.
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.

Schema Component Representation
<complexType name="AusAddress">
<complexContent>
<extension base=" Address ">
<sequence>
<element name="state" type=" AusStates "/>
<element name="postcode">
<simpleType>
<restriction base=" string ">
<pattern value="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attribute name="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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