IdGenerationService - Adding new entity

[gowthamgutha]

I have seen this in the CustomerServiceImpl.java

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return idGenerationService.findNextId("org.broadleafcommerce.profile.core.domain.Customer");

I would like to know if I really could use the same method for my custom entity something like..

com.mycompany.core.catalog.domain.MyCustomer by simply doing the following..

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return idGenerationService.findNextId("com.mycompany.core.catalog.domain.MyCustomer");

or do I need to do anything else apart from that?

Thanks in advance. Hope you will reply as soon as possible.

[phillipuniverse]

Customers work that way specifically so that customers do not have to be persisted immediately but can be later persisted into the database.

Customer IDs are a very one-off case and 99% of the time you should use the way IDs are generated in the rest of the application. Take ProductImpl for instance:

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@Id
@GeneratedValue(generator= "ProductId")
@GenericGenerator(
    name="ProductId",
    strategy="org.broadleafcommerce.common.persistence.IdOverrideTableGenerator",
    parameters = {
        @Parameter(name="segment_value", value="ProductImpl"),
        @Parameter(name="entity_name", value="org.broadleafcommerce.core.catalog.domain.ProductImpl")
    }
)
@Column(name = "PRODUCT_ID")
protected Long id;
 

This will use a 'ProductImpl' key in the SEQUENCE_GENERATOR table to obtain IDs. This is what we recommend for ID generation for new entities.

[gowthamgutha]

So, just adding the entity with a name and with a val in the SEQUENCE_GENERATOR table will be enough and then marking it as in the ProductImpl with annotations.

Do I need anything apart from that?

By the way, what is ID_VAL in that table?

Thanks in advance. Hope you will reply as soon as possible.

[phillipuniverse]

Yes, just adding that annotation just like in ProductImpl with obviously changed values for the annotation is enough. ID_VAL is what Hibernate uses to determine the actual sequence number.

[gowthamgutha]

What is this ID_VAL? Is it the starting number or the difference between two successive ids?