![]() ![]() insertable- is equivalent to insert=false/true which decide to use this column in insert or not when the value is null.length- to specify the length of column.annotation exposes following commonly used attributes. this annotation is applied on a property and is used to map the property with table column.However to override the ID generation strategy we can use annotation with This annotation accepts two attributes strategy and generator. – Hibernate automatically uses the id generation strategy when we add annotation.It is equivalent to use of tag in hbm files. This informs hibernate that corresponding property will be used as an entity identifier. – This annotation is applied on a column and it has a special meaning.We need to use name attribute of annotation to supply the table name. this annotation is also used at a class level and is used to provide the table name to which the entity will be mapped. ![]() this annotation is used at a class level to define that this class is an entity so the class must follow all the entity rules.My recommendation is to use JAP annotations as much as possible so that application code remains portable. Hibernate also provides annotations with the same name under package but those are the extension over JPA. There can be scenarios where you might need hbm files even if you are using annotations.Īnnotations are JPA2 specification compliant and will be available under javax.persistence.* package. One of the biggest advantages of using annotations over hbm files is that we can get rid of hbm files. We can configure the metadata in entity class itself using annotation instead of configuring in hbm files. ![]()
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