Class SubqueryFilterAttribute

Data object subquery filter attribute

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

Filter data by subquery:

some_field = (select ...)

some_field != (select ...)

some_field in (select ...)

some_field not in (select ...)

exists (select ...)

not exists (select ...)

Constructors

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SubqueryFilterAttribute(String, String, String)

Subquery filter attribute

Declaration
public SubqueryFilterAttribute(string subquery, string source, string fieldName)
Parameters
Type Name Description
String subquery

Subquery alias
String source

Primary source alias
String fieldName

Primary field name
Exceptions
Type Condition
XDataRuntimeException

Subquery alias cannot be null or empty string

Properties

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FilterType

Filter type

Declaration
public override FilterType FilterType { get; }
Property Value
Type Description
FilterType Subquery
Overrides
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Subquery

Subquery alias

Declaration
public string Subquery { get; }
Property Value
Type Description
String
See Also
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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

See Also