CODEWITHSUNDEEP
javaorientdb
Surya Prakash
Surya Prakash

Reputation: 53

Check if class exists or not in orientdb

How to check if a class exists or not in orient db if it is not exiting in the database i need to create it and insert a record if exists i need to insert the record . I need to do the same using JAVA

Upvotes: 5

Views: 1888

Answers (1)

Luigi Dell'Aquila
Luigi Dell'Aquila

Reputation: 2814

You can retrieve schema information via SQL with the following statement:

 select expand(classes) from metadata:schema

In particular, to retrieve a single class:

 select from (
    select expand(classes) from metadata:schema
 ) where name = 'YourClassName'

From Java:

 ODatabaseDocumentTx db = ...
 if(db.getMetadata().getSchema().existsClass("ClassName")){
   ...
 }

If you have an OrientGraph, you can get the underlying ODatabaseDocumentTx with

 graph.getRawGraph();

Upvotes: 7

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