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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 4 posts ] 
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 Post subject: is there a dialect availablke for foxpro,clipeer and Dbase
PostPosted: Wed Apr 13, 2005 6:50 am 
Newbie

Joined: Wed Apr 13, 2005 6:46 am
Posts: 2
Hi there,

Can anybody help me in finding a dialect for Foxpro/Clipper/DbaseIII
database that can be used with hibernate?

Any other solutions also welcome for the above datyabases.


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 Post subject: foxpro dialect
PostPosted: Wed Apr 13, 2005 10:22 am 
Newbie

Joined: Fri Mar 05, 2004 8:55 am
Posts: 19
with hibernate 2.1 :

-use the sun.jdbc.odbc.JdbcOdbcDriver
-option hibernate.jdbc.batch_size =0
-option hibernate.jdbc.use_scrollable_resultsets=false
-new dialect :

-redefine FOXPRO IF function:

Code:
public class FoxProCaseFragment extends CaseFragment {

   public String toFragmentString() {
      StringBuffer buf = new StringBuffer( cases.size() * 15 + 10 );
      StringBuffer buf2= new StringBuffer( cases.size() );
      
      Iterator iter = cases.entrySet().iterator();
      while ( iter.hasNext() ) {
         Map.Entry me = (Map.Entry) iter.next();
         buf.append(" iif( NOT ISNULL(")
            .append( me.getKey() )
            
            .append(") , ")
            .append( me.getValue() )
            .append(", ");
         buf2.append(")");
      }
      
      buf.append(".NULL.");
      buf.append(buf2);
      if (returnColumnName!=null) {
         buf.append(" as ")
            .append(returnColumnName);
      }
      
      return buf.toString();
   }
}


-new dialect :

Code:
public class FoxProDialect extends GenericDialect {

   public boolean supportsForUpdate() {      
      return false;
   }
   
   public CaseFragment createCaseFragment() {
      return new FoxProCaseFragment();
   }   
}


-last problem with varchar type and blank (interceptor):

Code:
public class FoxProInterceptor  implements Interceptor, Serializable {

   static protected Log log = LogFactory.getLog(FoxProInterceptor.class);
   
   public int[] findDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
      return null;
   }


   public Object instantiate(Class clazz, Serializable id) throws CallbackException {
       return null;
   }

   public Boolean isUnsaved(Object entity) {
      return null;
   }

   public void onDelete(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
   }

   public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types)
      throws CallbackException {
      return false;
   }

   public boolean onLoad(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
      if(types!=null)
      for (int i = 0; i < types.length; i++) {
         if(types[i] instanceof StringType){
            if(state[i] !=null ){
               state[i] =""+state[i].toString().trim();
            }
         }
      }
      return false;
   }

   public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
      return false;
   }

   public void postFlush(Iterator entities) throws CallbackException {
  }

   public void preFlush(Iterator entities) throws CallbackException {
   }

}


-add interceptor in your config :

Code:
hibernateconf.setInterceptor(new FoxProInterceptor());
sessionFactory = hibernateconf.buildSessionFactory();


voila.
@+


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 Post subject:
PostPosted: Fri Apr 22, 2005 2:17 am 
Newbie

Joined: Wed Apr 13, 2005 6:46 am
Posts: 2
Thanks voilo. Can I use the same for clipper and dbase iii?


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 Post subject:
PostPosted: Mon Jul 09, 2007 9:06 am 
Regular
Regular

Joined: Tue Jun 26, 2007 11:50 am
Posts: 105
Hi,

is it possible to do the same with nhibernate (for .NET) ? I cannot find the dll in the nhibernate 1.2 package. Is it possible to download them somewhere ?

Thanks.


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