Suspend and Resume transaction



Product

This feature is useful when you need to perform, from within a transaction, certain operations that do not need to be executed under the control of this transaction.

For example, your customer calls you to place an order and you begin to enter the order. Then your customer informs you that have moved to a new address so you update the customer address. Finally your customer changes their mind and cancels the order. In this case, you want to cancel the order but keep the new address. This is a typical example where suspending the transaction is useful.

Suspend and Resume Transaction

The new commands are:

  • SUSPEND TRANSACTION: pauses the current transaction. Any updated or added record remains locked.
  • RESUME TRANSACTION: reactivates a suspended transaction.
  • Transaction active: returns False if the transaction is suspended or if there is no current transaction, and True if the transaction is started or resumed.

An example database is available to demonstrate the new functionality.

Example database

For more details, please take a look at the 4D v15 R4 upgrade manual.

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Vanessa Talbot
• Product Owner •Vanessa Talbot joined 4D Program team in June, 2014. As a Product Owner, she is in charge of writing the user stories then translating it to functional specifications. Her role is also to make sure that the feature implementation delivered is meeting the customer need.Since her arrival, she has worked to define key features in 4D. She has worked on most of preemptive multi-threading new features and also on a very complex subject: the new architecture for engined application. Vanessa has a degree from Telecom Saint-Etienne. She began her career at the Criminal Research Institute as a developer for the audiovisual department. She has also worked in media and medical fields as expert in technical support, production as well as documenting new features.