IROCustomStreamableArray

Overview

The IROCustomStreamableArray interface is used as part of the custom array. The IROCustomStreamableArray interface has the property Count, which contains the count of elements in the custom array. Count is used in the serialization (TROSerializer class) to get the count of elements in the custom array which came from the input stream and set the count of elements in the custom array to the output stream.

You can use this interface if you want adjust custom arrays as they are read from the input stream and written to the output stream.

For example:

fStream.Write(CustomArray.Count,SizeOf(ArraySize));
for i:=1 to CustomArray.Count do
begin
  fStream.Write(CustomArray[i], SizeOf(CustomArray[i]));
end;

First, this code writes the count of elements in the custom array to the output stream fStream and then writes the elements of the custom array.

Location

 

Attributes    (declared in IROCustomStreamableClass)

property Attributes: TStrings read write

CanImplementType    (declared in IROCustomStreamableType)

function CanImplementType(const aName: string): boolean

Parameters:

  • aName:

Count

Contains the count of elements in the array.

property Count: integer read write

ElementType

property ElementType: string read write

GetElementType

function GetElementType: string

IsNull    (declared in IROCustomStreamableClass)

Identifies if this instance is a null.

function IsNull: boolean

Read    (declared in IROCustomStreamableType)

Retrieves an object state named aName from aSerializer into this instance.

procedure Read(aSerializer: TROSerializer; const aName: string; ArrayElementId: integer)

Parameters:

  • aSerializer: Serializer used to restore an object state.
  • aName: Object state identifier.
  • ArrayElementId:

SetNull    (declared in IROCustomStreamableClass)

Marks this instance as a null.

procedure SetNull(aIsNull: boolean)

Parameters:

  • aIsNull: value

TypeName    (declared in IROCustomStreamableType)

property TypeName: string read write

Write    (declared in IROCustomStreamableType)

Stores a state of this instance designated as aName into aSerializer.

procedure Write(aSerializer: TROSerializer; const aName: string; ArrayElementId: integer)

Parameters:

  • aSerializer: Serializer used to store an object state.
  • aName: Object state identifier.
  • ArrayElementId:

 

Attributes    (declared in IROCustomStreamableClass)

property Attributes: TStrings read write

Count

Contains the count of elements in the array.

property Count: integer read write

ElementType

property ElementType: string read write

TypeName    (declared in IROCustomStreamableType)

property TypeName: string read write

 

CanImplementType    (declared in IROCustomStreamableType)

function CanImplementType(const aName: string): boolean

Parameters:

  • aName:

GetElementType

function GetElementType: string

IsNull    (declared in IROCustomStreamableClass)

Identifies if this instance is a null.

function IsNull: boolean

Read    (declared in IROCustomStreamableType)

Retrieves an object state named aName from aSerializer into this instance.

procedure Read(aSerializer: TROSerializer; const aName: string; ArrayElementId: integer)

Parameters:

  • aSerializer: Serializer used to restore an object state.
  • aName: Object state identifier.
  • ArrayElementId:

SetNull    (declared in IROCustomStreamableClass)

Marks this instance as a null.

procedure SetNull(aIsNull: boolean)

Parameters:

  • aIsNull: value

Write    (declared in IROCustomStreamableType)

Stores a state of this instance designated as aName into aSerializer.

procedure Write(aSerializer: TROSerializer; const aName: string; ArrayElementId: integer)

Parameters:

  • aSerializer: Serializer used to store an object state.
  • aName: Object state identifier.
  • ArrayElementId:

See Also