public String toGroupByString(Criteria criteria, CriteriaQueryBuilder queryBuilder) {

    // query builder
    StringBuilder builder = new StringBuilder();
    
    // iterate over all projections from the list
    Iterator<Projection> iter = projectionList.iterator();
    while( iter.hasNext() ) {
      Projection projection = iter.next();
      
      // call toGroupByString() on child
      String groupBy = projection.toGroupByString(criteria, queryBuilder);
      
      // add only if result is not null
      if(groupBy != null && groupBy.trim().length() > 0) {

        // first add a comma if the builder already contains something
        if(builder.length() > 0) {
          builder.append(",");
        }
        
        // add group by expression of child
        builder.append(groupBy);
      
      }

    }

    // return result if something has been written to the builder
    String result = builder.toString().trim();
    if(result.length() > 0) {
      return result;
    }
    
    return null;
  }
public String toGroupByString(Criteria criteria, CriteriaQueryBuilder queryBuilder) {

    
    StringBuilder builder = new StringBuilder();
    
    
    Iterator<Projection> iter = projectionList.iterator();
    while( iter.hasNext() ) {
      Projection projection = iter.next();
      
      
      String groupBy = projection.toGroupByString(criteria, queryBuilder);
      
      
      if(groupBy != null && groupBy.trim().length() > 0) {

        
        if(builder.length() > 0) {
          builder.append(",");
        }
        
        
        builder.append(groupBy);
      
      }

    }

    
    String result = builder.toString().trim();
    if(result.length() > 0) {
      return result;
    }
    
    return null;
  }
public String toGroupByString ( Criteria criteria , CriteriaQueryBuilder queryBuilder ) { // query builder StringBuilder builder = new StringBuilder ( ) ; // iterate over all projections from the list Iterator < Projection > iter = projectionList . iterator ( ) ; while ( iter . hasNext ( ) ) { Projection projection = iter . next ( ) ; // call toGroupByString() on child String groupBy = projection . toGroupByString ( criteria , queryBuilder ) ; // add only if result is not null if ( groupBy != null && groupBy . trim ( ) . length ( ) > 0 ) { // first add a comma if the builder already contains something if ( builder . length ( ) > 0 ) { builder . append ( "," ) ; } // add group by expression of child builder . append ( groupBy ) ; } } // return result if something has been written to the builder String result = builder . toString ( ) . trim ( ) ; if ( result . length ( ) > 0 ) { return result ; } return null ; }
/*
@see org.criteria4jpa.projection.Projection#toGroupByString(org.criteria4jpa.Criteria, org.criteria4jpa.impl.CriteriaQueryBuilder)
/ *