Difference between revisions of "Property attributes"
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== How to store additional info == | == How to store additional info == | ||
| − | There | + | There were two suggestions about the place for the property attributes: |
| − | #RTTI. Advantage - | + | #RTTI. Advantage - easier access from application. Disadvantage - bigger final executable. |
#PPU. Advantage - info will not be added to executable. Disadvantage - more complicated way of accessing data. | #PPU. Advantage - info will not be added to executable. Disadvantage - more complicated way of accessing data. | ||
| − | As result of discussion PPU storage has been selected. | + | As a result of the discussion PPU storage has been selected. |
Revision as of 11:19, 1 February 2008
Syntax Diagram
PropertyDeclaration ::= PROPERTY Identifier [PropertyInterface] [PropertySpecifiers] [Directives]
PropertySpecifiers ::= [ ... ] [ ... ] [ATTRIBUTES AttributesArray]
AttributesArray ::= '[' (AttributeDeclaration [, AttributeDeclaration]) ']'
AttributeDeclaration ::= '<string>':'<string>'
Declaration Examples
<delphi> TmenuItem = class(...) ... property Detachable: Boolean read FDetachable write SetDetachable attributes
['widgetsets:qt,gtk,win32', 'implementor:Vasya Pupkin', 'creation-date:01.01.2007'];
... end; </delphi>
<delphi> TxxxDatabase = class(...) ... property TransactionModel: TTransactionModel read FtransactionModel write
SetTransactionModel attributes ['engines:firebird,oracle,sybase-asa'];
... end; </delphi>
How to store additional info
There were two suggestions about the place for the property attributes:
- RTTI. Advantage - easier access from application. Disadvantage - bigger final executable.
- PPU. Advantage - info will not be added to executable. Disadvantage - more complicated way of accessing data.
As a result of the discussion PPU storage has been selected.
