In mongodb, for example, the following mapping:
{code}
@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "type")
public abstract class BigEvent implements Serializable {
}
{code}
should create the following index (or something similar):
{code}
> db.BigEvent.getIndexes()
[
...
{
"v" : 1,
"key" : {
"type" : 1
},
"name" : "type_idx",
"ns" : "ogm_test_database.BigEvent"
}
]
{code}
This should also happen with the deafult column (DTYPE column).
We should skip this step if a user has defined an index for the that column. |
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