PooledTxPipeline Class (PIA)

Use this object to run a Microsoft Commerce Server 2000 pipeline. The pipeline may be an Order Processing pipeline (OPP). Use in place of the PooledPipeline object where you need transactions.

The PooledTxPipeline object uses COM+ object pooling to greatly increase the loading speed of pipelines. For more information about pooled pipelines, see Pooled Pipelines.

Methods

Remarks

The PooledTxPipeline object is registered under COM+ as "transactions required." Use this pipeline where transactions are needed. For more information about transactions and pipelines, see Pipeline Basics.

The Microsoft Distributed Transaction Coordinator (MSDTC) service must be running in order to use the PooledTxPipeline object.

To verify that the Distributed Transaction Coordinator service is running

1. Click Start, point to Programs, point to Administrative Tools, and then click Services.
2. Scroll to Distributed Transaction Coordinator and verify that the Status is Started.

In general, use the PooledTxPipeline object only in production Web sites; use the MtsPipeline object when developing the site. If you use the PooledTxPipeline object during development, you will need to stop and restart Internet Information Services (IIS) to force the .pcf files to be re-read when you change them.

The PooledPipeline object should be created on each ASP page in which it is used rather than being held in Application or Session scope.

When you create custom poolable pipeline components, you must add the Component Object Model (COM) category, CATID_POOLABLE, to the component to make it poolable.

Requirements

Namespace: Microsoft.CommerceServer.Interop

Platforms: Windows 2000, Windows Server 2003

Assembly: pipelinelib (in pipelinelib.dll)

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