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narendram
hibernate delete query :
2 Answer(s)      3 years and 7 months ago
Posted in : Hibernate


Hi, I m using Hibernate 3 + javadb

my table is like:

CREATE table APP.BIDS ( BID_ID INTEGER NOT NULL PRIMARY KEY GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1), BIDDER_ID INTEGER NOT NULL , BID_AMOUNT INTEGER NOT NULL , ITEM_ID INTEGER NOT NULL )

I want to delete a row from table . My code is :

try{

SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();

session =sessionFactory.openSession();

org.hibernate.Transaction tx = session.beginTransaction();

String query1 = "delete from APP.BIDS where BID_ID = 16";

Query query = session.createQuery(query1);

int row = query.executeUpate();

if(row==0)
  logger.info("Doesn't delete row. Record not found .");
else
    logger.info("Records deleted :"+row);
tx.commit();
System.out.println("Done");

}catch(Exception e){

  System.out.println(e.getMessage());

  e.printStackTrace();

}finally{

session.close();

}

**But it is not working.. Eroor is like :**

2859 [main] DEBUG org.hibernate.impl.SessionImpl - executeUpdate: delete from APP.BIDS where BID_ID = 14

2859 [main] DEBUG org.hibernate.engine.QueryParameters - named parameters: {}

2922 [main] DEBUG org.hibernate.hql.ast.QueryTranslatorImpl - parse() - HQL: delete from APP.BIDS where BID_ID = 14

java.lang.NullPointerException at org.hibernate.hql.antlr.HqlSqlBaseWalker.path(HqlSqlBaseWalker.java:2193)

at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:2281)

at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:2232)

at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:498)

at org.hibernate.hql.antlr.HqlSqlBaseWalker.deleteStatement(HqlSqlBaseWalker.java:276)

at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:156)

2938 [main] DEBUG org.hibernate.hql.AST - --- HQL AST ---

-[DELETE] CommonAST: 'delete'

+-[FROM] CommonAST: 'implied-from-so-i-can-use-the-fromClause-rule-during-analysis-phase'

|  \-[DOT] CommonAST: '.'

\-[WHERE] CommonAST: 'where'

   \-[EQ] CommonAST: '='

      +-[IDENT] CommonAST: 'BID_ID'

      \-[NUM_INT] CommonAST: '14'

2938 [main] DEBUG hql.parser - throwQueryException() : no errors

2984 [main] ERROR hql.parser - * ERROR: <AST>:0:0: unexpected end of subtree

2984 [main] DEBUG hql.parser - <AST>:0:0: unexpected end of subtree

<AST>:0:0: unexpected end of subtree at org.hibernate.hql.antlr.HqlSqlBaseWalker.path(HqlSqlBaseWalker.java:2201) at org.hibernate.hql.antlr.HqlSqlBaseWalker.path(HqlSqlBaseWalker.java:2180) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:2281) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:2232) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:498) at org.hibernate.hql.antlr.HqlSqlBaseWalker.deleteStatement(HqlSqlBaseWalker.java:276) at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:156) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:189) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:130) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:83) at org.hibernate.impl.SessionFactoryImpl.getQuery(SessionFactoryImpl.java:414) at org.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:814) at org.hibernate.impl.SessionImpl.executeUpdate(SessionImpl.java:801) at org.hibernate.impl.QueryImpl.executeUpate(QueryImpl.java:89) at com.ex.SeventhExample.main(SeventhExample.java:43)


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August 4, 2012 at 12:02 PM


private void Delete() { try { DefaultTableModel tableModel1 = (DefaultTableModel) jTable1.getModel(); Session session = HibernateUtil.getSessionFactory().openSession(); EPatientfees patient_fees = new EPatientfees(); session.beginTransaction(); String patientfees_id=jTable1.getValueAt(jTable1.getSelectedRow(),4).toString(); Query query = session.createSQLQuery("delete from epatientfees where epatientfeesid="+patientfeesid+""); int CheckUpdate = query.executeUpdate();

    if (CheckUpdate == 0)   System.out.println("Doesn't deleted any row!");

    else          

    session.getTransaction().commit();
    tableModel1.getDataVector().removeAllElements();
    refreshtable();
   }

catch(Exception e) { System.out.println(e.getMessage()); }

}



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