8.12.9 @DiscriminatorValue

(1) Description

This annotation specifies the value of the column for identification used in the SINGLE_TABLE strategy or JOINED strategy. You can specify this annotation in a superclass or subclass.

The applicable target is class.

Note the following points:

• The settings of @DiscriminatorValue are not inherited. @DiscriminatorValue must be set up in each entity class.

• The settings of @DiscriminatorValue must match the type specified in discriminatorType and length specified in length of @DiscriminatorColumn.

• If the discriminatorType of @DiscriminatorColumn is INTEGER, make note of the following points:

  • In @DiscriminatorValue, specify only an integer that does not include 0 or a blank at the beginning.

  • You cannot omit @DiscriminatorValue. If omitted, the operation will not be guaranteed.

• If the discriminatorType of @DiscriminatorColumn is other than INTEGER, you can omit @DiscriminatorValue. In such a case, the operation is performed by assuming that the value specified in value is the class name of the entity.

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(2) Element

The following table lists the elements of @DiscriminatorValue:

Element name	Optional/Required	Element description
value	Required	This element specifies the value to be set up in the column for identification.

The details of attributes that are supported with Cosminexus JPA provider are as follows:

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