TDAHETConnection

Overview

The TDAHETConnection class contains definitions for heterogeneous connections. It allows to specify the relationship between the data table and the TDAConnection.

The following example demonstrates how to use this class:

//lHet: TDAHETConnection;
  lHet := TDAHETConnection.Create(ConnectionManager.Connections);
  lHet.Name := 'HetConnection';
  lHet.ObjectMappings.Add('CUSTOMER=IBX');
  lHet.ObjectMappings.Add('Customers=Northwind');
  lHet.Default := True;

Location

 

constructor Create  override

Creates a new instance.

constructor Create(aCollection: TCollection)

Parameters:

  • aCollection: owner

Assign  override    (declared in TDAConnection)

Copies the contents of another, similar object.

procedure Assign(aSource: TPersistent)

Parameters:

  • aSource: Instance whose properties will be copied

ConnectionString    (declared in TDAConnection)

The Connection string specifies information about a data source and the means of connecting to it.

property ConnectionString: string read write

ConnectionType    (declared in TDAConnection)

This property is user-editable and arbitrary values can be used to logically group connections that use similar statements.

property ConnectionType: string read write

Default    (declared in TDAConnection)

Specifies whether this connection will be used by default.

property Default: boolean read write

Description    (declared in TDAConnection)

Description

property Description: string read write

GetConnectionString  protected override

Returns the HET value.

function GetConnectionString: string

GetDisplayName  protected override    (declared in TDAConnection)

Returns the name of the connection as it appears in the collection editor.

function GetDisplayName: string

Name    (declared in TDAConnection)

Connection name

property Name: string read write

ObjectMappings

Contains table mappings as = pair:

property ObjectMappings: TStrings read write

SetConnectionString  protected override

Sets the Connection string.

procedure SetConnectionString(const aValue: string)

Parameters:

  • aValue: given connection string.

SetDisplayName  protected override    (declared in TDAConnection)

Sets the name of the connection as it appears in the collection editor.

procedure SetDisplayName(const Value: string)

Parameters:

  • Value: value for the Name property

Tag    (declared in TDAConnection)

Tag

property Tag: integer read write

 

ConnectionString    (declared in TDAConnection)

The Connection string specifies information about a data source and the means of connecting to it.

property ConnectionString: string read write

ConnectionType    (declared in TDAConnection)

This property is user-editable and arbitrary values can be used to logically group connections that use similar statements.

property ConnectionType: string read write

Default    (declared in TDAConnection)

Specifies whether this connection will be used by default.

property Default: boolean read write

Description    (declared in TDAConnection)

Description

property Description: string read write

Name    (declared in TDAConnection)

Connection name

property Name: string read write

ObjectMappings

Contains table mappings as = pair:

property ObjectMappings: TStrings read write

Tag    (declared in TDAConnection)

Tag

property Tag: integer read write

 

constructor Create  override

Creates a new instance.

constructor Create(aCollection: TCollection)

Parameters:

  • aCollection: owner

Assign  override    (declared in TDAConnection)

Copies the contents of another, similar object.

procedure Assign(aSource: TPersistent)

Parameters:

  • aSource: Instance whose properties will be copied

GetConnectionString  protected override

Returns the HET value.

function GetConnectionString: string

GetDisplayName  protected override    (declared in TDAConnection)

Returns the name of the connection as it appears in the collection editor.

function GetDisplayName: string

SetConnectionString  protected override

Sets the Connection string.

procedure SetConnectionString(const aValue: string)

Parameters:

  • aValue: given connection string.

SetDisplayName  protected override    (declared in TDAConnection)

Sets the name of the connection as it appears in the collection editor.

procedure SetDisplayName(const Value: string)

Parameters:

  • Value: value for the Name property

See Also