code: public String createInsertBeforeStr4ModelEntry(Map dbColMap0,Map<String,MicroDbModelEntry> modelEntryMap){
  		if(dbColMap0==null){
  			return null;
  		}
  		
  		//add 201902 ning
  		Map dbColMap=new CaseInsensitiveKeyMap();
  		if(dbColMap0!=null){
  			dbColMap.putAll(dbColMap0);
  		}
  		
  		Cobj crealValues=Cutil.createCobj();
  		Map metaMap=new HashMap();
  		Iterator it=dbColMap.keySet().iterator();
  		Set<String> metaFlagSet=new TreeSet();
  		while(it.hasNext()){
  			String key=(String) it.next();
  			String value=(String) dbColMap.get(key);
  
  			MicroDbModelEntry modelEntry=modelEntryMap.get(key);
  			if(modelEntry==null){
  				continue;
  			}
  			if(CheckModelTypeUtil.isRealCol(modelEntry)==false){
  				if(value!=null){
  					String metaName=modelEntry.getMetaContentId();
  					metaFlagSet.add(metaName);
  				}
  			}else {
  				crealValues.append(key,value!=null);
  			}
  		}
  
  		for(String metaName:metaFlagSet){
  			crealValues.append(metaName);
  		}
  		
  		return crealValues.getStr();
  	}
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  @param dbColMap �ύ���
  @param modelEntryMap ���ģ��
  @return
  @throws Exception