Difference between revisions of "XCSG:Field"

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(Specification)
 
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== Specification ==
 
== Specification ==
{| class="wikitable" style="width:100%"
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{{Node
! width="160" align="left" | Metaclass
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| extends = Variable
| Field
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| description = A a [[Variable]] associated with a [[Classifier]] (a [[ClassVariable]]), or with instances of a [[Classifier]] (an [[InstanceVariable]]).
|-
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}}
! Extends
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| [[Feature]], [[Variable]]
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|-
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! Description
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| A feature whose value is a part of the state of an object or class, e.g. an attribute or association
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|-
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! References
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| StructuralFeature [5, p. 2-14, Figure 2-5], [5, pp. 2-54, 2-69]
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|}
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{| class="wikitable"  style="width:100%"
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! width="160"|Tag
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| isActive
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|-
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! Description
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| Does each instance of the class define its own thread of control?
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|}
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Metaclass Field
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Extends Feature, Variable
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Description A feature whose value is a part of the state of an object or class, e.g. an attribute or association
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Refs StructuralFeature [5, p. 2-14, Figure 2-5], [5, pp. 2-54, 2-69]
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AssociationEnd redefines
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Description Any inherited fields overridden (redefined) by this field
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Type Set (Field)
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Multiplicity *
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Attribute implicitRedefinition
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Description Does the field represent an implicit redefinition (e.g., to match a particular language semantics) rather than a redefinition explicitly specified by the user?
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Type Boolean
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DefaultValue false
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Attribute multiplicity
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Description The number of values that the feature may hold, typically specified as a range (min .. max) or ‘*’ (zero or more).
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In the common case in which the multiplicity is 1..1, the feature is a scalar.
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Type Multiplicity
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Attribute ordering
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Description Are the values associated with the feature ordered?
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Type OrderingKind
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Latest revision as of 18:55, 23 May 2014

Specification

Metaclass Field
Extends Variable
Description A a Variable associated with a Classifier (a ClassVariable), or with instances of a Classifier (an InstanceVariable).
Direct Subkinds ClassVariable, InstanceVariable
All Superkinds Variable, Node, ModelElement
Specified In Edges

Inherited From In Edge Predecessor Multiplicity Description
Variable DataFlow (Edge) DataFlow (Node) Connects DataFlow nodes to one another and to Variables, linking the origin of data to locations that it is modified or consumed.
Specified Out Edges

Inherited From Out Edge Successor Multiplicity Description
Variable DataFlow (Edge) DataFlow (Node) Connects DataFlow nodes to one another and to Variables, linking the origin of data to locations that it is modified or consumed.

DefinedAs TypeAlias 0..1 Connects a Variable or DataFlow node which received its Type via a TypeAlias (such as a C/C++ typedef) to that TypeAlias.
InstanceVariableWritten InstanceVariableAssignment Connects a value (DataFlow (Node) or Variable) representing an object instance to an InstanceVariableAssignment representing a write to a field of that object.
TypeOf Type 1 Links a Variable or DataFlow node to its Type
Known Possible In Edges

Inherited From In Edge Predecessor Multiplicity Description
Variable HasVariable Namespace 1 Links a Classifier or Package to one of its Variables.

InterproceduralDataFlow Assignment Represents data flows between Functions, or involving Variables visible to multiple Functions.
Node Contains Node 1 Indicates that the predecessor contains the successor in a sense specified by the specific type of Contains edge.
Known Possible Out Edges

Inherited From Out Edge Successor Multiplicity Description
Variable InterproceduralDataFlow DataFlow (Node) Represents data flows between Functions, or involving Variables visible to multiple Functions.
Node Contains Node Indicates that the predecessor contains the successor in a sense specified by the specific type of Contains edge.