Class ExternalLinkAttribute

Data object external link to other (child) data objects attribute

Inheritance
Object
Attribute
ExternalLinkAttribute
Inherited Members
Namespace: XData.Mapping
Assembly: XData.docfx.dll
Syntax
[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
public sealed class ExternalLinkAttribute : Attribute
Remarks

Used to organize master/detail relation between repositories

Constructors

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ExternalLinkAttribute(Type, String, String, String)

External link attribute

Declaration
public ExternalLinkAttribute(Type childType, string childProperty, string property = "", string filterName = "")
Parameters
Type Name Description
Type childType

Child data object description type
String childProperty

Child property to link
String property

Parent property contains value to link
String filterName

Filter name
Exceptions
Type Condition
XDataRuntimeException

Child data object description type cannot be null
XDataRuntimeException

Child property to link cannot be null or empty string

Properties

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ChildLinkType

Child linked property type

Declaration
public Type ChildLinkType { get; set; }
Property Value
Type Description
Type
Remarks

Used when child repository linked through subquery

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ChildProperty

Child property to link

Declaration
public string ChildProperty { get; }
Property Value
Type Description
String
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ChildType

Child data object type

Declaration
public Type ChildType { get; }
Property Value
Type Description
Type
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Combination

Filter combination (filter group) name

Declaration
public string Combination { get; set; }
Property Value
Type Description
String
See Also
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Direct link slave to selected tree node

Declaration
public bool DirectLink { get; set; }
Property Value
Type Description
Boolean

Used to show/hide subtree related items in slave view when master is tree

When ShowSubtree = false - slave contains selected node child items only

When ShowSubtree = true - selected node and it's subtree child items

Works with ShowSubtree: External links marked as DirectLink is filled while ShowSubtree is false and omitted otherwise

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FilterName

Filter name

Declaration
public string FilterName { get; }
Property Value
Type Description
String
Remarks

If not assigned used FilterByChildProperty pattern

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MasterRefresh

Refresh parent object notification on child submit

Declaration
public bool MasterRefresh { get; set; }
Property Value
Type Description
Boolean
Remarks

Used when parent object contains calculated fields over child objects

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Nullable

Filter null value handling

Declaration
public FilterNullable Nullable { get; set; }
Property Value
Type Description
FilterNullable
See Also
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Operation

Filter operation

Declaration
public FilterOperation Operation { get; set; }
Property Value
Type Description
FilterOperation
See Also
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PrimaryFilter

Primary filter flag

Declaration
public bool PrimaryFilter { get; set; }
Property Value
Type Description
Boolean
See Also
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PropertyName

Property to link

Declaration
public string PropertyName { get; }
Property Value
Type Description
String
Remarks

If not assigned used ChildProperty name

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TypeId

When implemented in a derived class, gets a unique identifier for this Attribute.

Declaration
public override object TypeId { get; }
Property Value
Type Description
Object

An Object that is a unique identifier for the attribute.
Overrides

Extension Methods