TBATypedBlob¶

Declaration¶

TBATypedBlob = class(TBABlob)

Hierarchy¶

TObject
TBoldMemoryManagedObject
TBoldFlaggedObject
TBoldSubscribableObject
TBoldElement
TBoldDomainElement
TBoldMember
TBoldAttribute
TBABlob
TBATypedBlob

Description¶

This subclass of TBABlob adds the possibility to set the content type of the data. The content type is any string that identifies the format of the data, such as the Mime-type identifiers:

image/bmp
image/jpeg
image/x-wmf
audio/wav
text/html
text/xml

The attribute itself knows nothing about mimetypes, and will enforce no control of the correctness of data, this must be added by new subclasses.

Methods¶

Name	Summary	Notes
AssignValue		override
CanSetContentType
CompareToAs		override
GetContentTypeContent		protected
GetStringRepresentation		protected, override
IsEqualAs		override
ProxyClass		protected, override
ProxyInterface		override
SetStringRepresentation		protected, override
SetToNull		override

AssignValue¶

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

CanSetContentType¶

function CanSetContentType(Value: string; Subscriber: TBoldSubscriber): Boolean;

Use this function to test if it is allowed to set the attribute to a specific value.

If a subscriber is sent to the function, this subscriber will be notified if the conditions have changed (so that an illegal value is now legal). It is OK to send a nilpointer instead.

CompareToAs¶

function CompareToAs(CompareType: TBoldCompareType; BoldElement: TBoldElement): Integer; override; See also Ancestor Method

GetContentTypeContent¶

function GetContentTypeContent: String;

GetStringRepresentation¶

function GetStringRepresentation(Representation: TBoldRepresentation): string; override; See also Ancestor Method

IsEqualAs¶

function IsEqualAs(CompareType: TBoldCompareType; BoldElement: TBoldElement): Boolean; override; See also Ancestor Method

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

SetStringRepresentation¶

procedure SetStringRepresentation(Representation: TBoldRepresentation; Value: string); override; See also Ancestor Method

SetToNull¶

procedure SetToNull; override; See also Ancestor Method

In addition to what is done by the inherited method (setting the attribute to null), it will also free the memory used by the content type string.

Generated from the Bold 4.0 help (Help/BfD.chm) by Tools/chm2mkdocs.py; member lists reflect Bold 4.0, see the source for members added since.