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Exploring the Technical Essentials of SAP Commerce Cloud

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cleanFiles/bookmap_SAP_Commerce_Cloud_Essentials_for_Develope_en-US_learning-sap-com_lsc-prod.zip (MMCP-DROPZONE) - 2023-10-23T13:02:50.000Z

Transaction Management

<div id="content"><p tabindex="0">SAP Commerce offers a number of ways to identify methods or sections of your code as transactional.</p><p tabindex="0">Find out what they are in the following video.</p><div class="kalturaVideoLessonWrapper"><div id="1_dqaxtlvp" data-testid="video" class="kalturaVideoLessonContainer"></div></div></div>

All Transactions are ACID, which stands for atomic, consistent, isolated, and durable.  This means a transaction is either executed completely  or not at all, which keeps the underlying database in a consistent state at all times. SAP Commerce provides an implementation of Spring's PlatformTransactionManager, with its simple-to-use API to support transaction management, so you can manage transactions using: an @ (at) transactional annotation an AOP-style tx XML declaration a TransactionTemplate or the SAP Commerce Transaction API We'll look at the @ transactional annotation later as an example, but if you want to know how to use one of the other ways, please navigate to the help portal page using the link at the end of this presentation. You should also know that: SAP Commerce does not support the Java Transaction API, or JTA, and so doesn't provide the UserTransaction interface. That means SAP Commerce doesn’t participate in global transactions involving multiple systems. That is, it doesn't support two-phase commits,  and instead concentrates solely on the databased it is connected to. Let’s take a look at the easiest way to wrap code in a transaction, using the @ transactional annotation. For example, when implementing the provideService method shown here, we only need to annotate the method signature with the @Transactional annotation. This will cause all the code inside the method to execute inside a transaction.  Since only the READ_COMMITTED isolation level is supported, the @Transactional declaration is normally used without parameters. It's not an error to provide an isolation level as a parameter to the annotation,  but it will be ignored. If you want to know more about transaction management, please have a look at the following help page.

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