java - Hibernate generate ID from database function -


my code is

    `@id @genericgenerator(name="generator", strategy="increment") @generatedvalue(generator="generator")  @column(name = "pm_id", nullable = false, length=12) private long pmid;`

in above id genarate max id +1 database want generate pmid column database function , want pass value function. function name generateid(2,3)

so please tell me how this..

you can use custom id generator call stored procedure.

define @id point custom generator : 

@id @genericgenerator(name="mycustomgenerator", strategy="org.mytest.entity.customidgenerator" ) @generatedvalue(generator="mycustomgenerator" ) @column(name = "pm_id", nullable = false, length=12) private long pmid;  private integer field1;  private integer field2;  .... getters , setters ....

and create custom generator implementing identifiergenerator , passing properties of entity stored proc parameters:

public class customidgenerator implements identifiergenerator {  private static final string query_call_store_proc = "call generateid(?,?,?)";  public serializable generate(sessionimplementor session, object object)         throws hibernateexception {      long result = null;     try {         connection connection = session.connection();         callablestatement callablestmt = connection. preparecall(query_call_store_proc);         callablestmt.registeroutparameter(1, java.sql.types.bigint);         callablestmt.setint(2, ((myobject) object).getfield1());         callablestmt.setint(3, ((myobject) object).getfield2());         callablestmt.executequery();       // result out parameter #1         result = callablestmt.getlong(1);         connection.close();     } catch (sqlexception sqlexception) {         throw new hibernateexception(sqlexception);     }     return result;   } }

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