TBABoolean¶

The class of boolean attributes

Declaration¶

TBABoolean = class(TBAValueSet)

Hierarchy¶

TObject
TBoldMemoryManagedObject
TBoldFlaggedObject
TBoldSubscribableObject
TBoldElement
TBoldDomainElement
TBoldMember
TBoldAttribute
TBAValueSet
TBABoolean
Direct subclasses
TBAConstraint

Description¶

This attribute type can store a boolean value. It has three different string representations:

brDefault (1) - 'N', 'Y'
2 - 'F', 'T'
3 - 'False', 'True'

If you want other string-representations, the easiest way is to subclass TBABoolean, and override the GetStringRepresentation-method

Properties¶

Name	Summary	Notes
AsBoolean

AsBoolean¶

property AsBoolean: Boolean;

This property is the actual delphi-representation of the boolean value stored in the attribute.

Methods¶

Name	Summary	Notes
AssignContentValue		protected, override
GetAsBoolean	Getter for the AsBoolean property	protected
GetAsVariant	Returns the data state as a variant	override
GetValues	Returns the TBAValueSetValueList for the Boolean property	protected, override
ProxyClass		protected, override
ProxyInterface		override
SetAsBoolean	Set method for AsBoolean	protected
SetAsVariant	Sets the native value from a variant	override

AssignContentValue¶

procedure AssignContentValue(Source: IBoldValue); override; See also Ancestor Method

GetAsBoolean¶

function GetAsBoolean: Boolean;

GetAsBoolean checks if reading is permitted using CanRead before returning the value held by the attribute.

GetAsVariant¶

function GetAsVariant: Variant; override; See also Ancestor Method

GetAsVariant simply returns the AsBoolean result as a variant.

GetValues¶

function GetValues: TBAValueSetValueList; override; See also Ancestor Method

Since TBABoolean is implemented as a subclass of TBAValueSet it is related to a list of valid values. This method returns the list. The list is a singleton, not created until accessed and automatically destroyed on termination.

ProxyClass¶

function ProxyClass: TBoldMember_ProxyClass; override; See also Ancestor Method

ProxyInterface¶

function ProxyInterface(const IId: TGUID; Mode: TBoldDomainElementProxyMode; out Obj): Boolean; override; See also Ancestor Method

SetAsBoolean¶

procedure SetAsBoolean(Value: Boolean);

SetAsBoolean is the set method for the AsBoolean property. It ensures the value can be set prior to altering it.

SetAsVariant¶

procedure SetAsVariant(const Value: Variant); override; See also Ancestor Method

SetAsVariant sets the AsBoolean property with the variant passed as parameter.

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