TROCustomRODLReader

Overview

This is an abstract class to allow RODL reading process to be customized. Such customization is an advanced technique that can be used by either server class or message class or both. RODL reading customization may be necessary if the RODL content access is more complex then just reading a local resource. For example, Hydra enabled applications may consist of several modules and each of those may contain its own RODL resource.
In general this feature is rarely used. The RemoObjects SDK itself has no concrete TROCustomRODLReader descendants implemented, just serving as a base for extensions.

Location

 

constructor Create  override    (declared in TROComponent)

Creates a new instance.

constructor Create(AOwner: TComponent)

Parameters:

  • AOwner: Owner.

Assign  override

Copies the contents of another, similar object.

procedure Assign(Source: TPersistent)

Parameters:

  • Source: Instance whose properties will be copied

DoReadRODLResource  protected virtual abstract

The method that is actually responsible for reading the resource. Descendant classes implementers must override it and implement some reading procedure there.

procedure DoReadRODLResource(aStream: TStream; aServiceGroup: string)

Parameters:

  • aStream: The target stream to place the RODL content into.
  • aServiceGroup:

OnAfterReadRODL

This event is fired before the actual RODL reading method called.

property OnAfterReadRODL: TROReadRODLEvent read write
delegate: procedure OnAfterReadRODL(aRODLReader: TROCustomRODLReader; aStream: TStream)

OnBeforeReadRODL

This event is fired after the RODL reading mathod finishes.

property OnBeforeReadRODL: TROReadRODLEvent read write
delegate: procedure OnBeforeReadRODL(aRODLReader: TROCustomRODLReader; aStream: TStream)

ReadRODLResource

The higher level RODL reading method that is callable from outside. Fires before and after reading events and invokes DoReadRODLResource

procedure ReadRODLResource(aStream: TStream; aServiceGroup: string)

Parameters:

  • aStream: The target stream to place the RODL content into.
  • aServiceGroup:

ROFreeNotification    (declared in TROComponent)

Forwards notification messages to all owned RO components.

procedure ROFreeNotification(AComponent: TComponent)

Parameters:

  • AComponent: component

RORemoveFreeNotification    (declared in TROComponent)

Disables destruction notification for specified RO component.

procedure RORemoveFreeNotification(AComponent: TComponent)

Parameters:

  • AComponent: component

 

constructor Create  override    (declared in TROComponent)

Creates a new instance.

constructor Create(AOwner: TComponent)

Parameters:

  • AOwner: Owner.

Assign  override

Copies the contents of another, similar object.

procedure Assign(Source: TPersistent)

Parameters:

  • Source: Instance whose properties will be copied

DoReadRODLResource  protected virtual abstract

The method that is actually responsible for reading the resource. Descendant classes implementers must override it and implement some reading procedure there.

procedure DoReadRODLResource(aStream: TStream; aServiceGroup: string)

Parameters:

  • aStream: The target stream to place the RODL content into.
  • aServiceGroup:

ReadRODLResource

The higher level RODL reading method that is callable from outside. Fires before and after reading events and invokes DoReadRODLResource

procedure ReadRODLResource(aStream: TStream; aServiceGroup: string)

Parameters:

  • aStream: The target stream to place the RODL content into.
  • aServiceGroup:

ROFreeNotification    (declared in TROComponent)

Forwards notification messages to all owned RO components.

procedure ROFreeNotification(AComponent: TComponent)

Parameters:

  • AComponent: component

RORemoveFreeNotification    (declared in TROComponent)

Disables destruction notification for specified RO component.

procedure RORemoveFreeNotification(AComponent: TComponent)

Parameters:

  • AComponent: component

 

OnAfterReadRODL

This event is fired before the actual RODL reading method called.

property OnAfterReadRODL: TROReadRODLEvent read write
delegate: procedure OnAfterReadRODL(aRODLReader: TROCustomRODLReader; aStream: TStream)

OnBeforeReadRODL

This event is fired after the RODL reading mathod finishes.

property OnBeforeReadRODL: TROReadRODLEvent read write
delegate: procedure OnBeforeReadRODL(aRODLReader: TROCustomRODLReader; aStream: TStream)

Descendants