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This article introduces you how to analyze SAP SADL and SAP Hybris DTO, the content is very detailed, interested friends can refer to, hope to be helpful to you.

When you need a simpler or more convenient format to display some data in JSP

The above is an excerpt from http://help.hybris.com to explain why we need DTO.

To put it simply, because the model format defined by Service Layer is not exactly the same as the format required by UI, if UI directly consumes Service Layer's model, the code is ugly to write and produces a strong coupling between UI layer and service layer.

More general, DTO can be seen as one of the implementations of SADL, between BO (service layer) and UI layer, and as a bridge for UI (consumer layer) to consume Service layer:

Hybris's DTO usually ends with data.java, and there are a total of 445 DTO in the 6.5.0.0.23546 version I installed:

An example of DTO:

In the implementation of CRM Genil layer, although the concept of DTO is not explicitly put forward, from the signature of these methods of Genil layer, we can see that the idea of DTO is also implied in it: converting data from the format CRMT_PRODIL_DATA of genil layer to the COMT_PRODUCT_MAINTAIN_UI of UI layer.

On how to analyze SAP SADL and SAP Hybris DTO to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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