Hi frnds,

i have a class where json parameters come in string format  among them two values come in decimal format i was not able to parse those values with my object values please help me in modfying the code and how to implement .

please find the below code and let me know waht need to be done

try {
            RestRequest req = RestContext.request;
            res = RestContext.response;
            res.statusCode = HTTP_OK;
            res.addHeader('Content-Type', CONTENT_TYPE);
            System.debug(JSON.serializePretty(req.params));

                 
                Params params = new Params(req.params);
                system.debug(' enter params'+params);
               
                Order__c order= createOrder(params);
              
                if(order!=null){
                 body = upsertSObject(order);
                              
               
                          }
                     }
                    catch (MyException e) {
                        if (body == null)
                             body = new ResponseBody();
                             body.addError(e);
                     }
                    catch (Exception e) {
                         if (res == null) throw e; // something horrible has happened!
                                res.statusCode = HTTP_ERROR;
                         if (body == null)
                                body = new ResponseBody();
                                body.addError(e);
                      }
                        if (body.id != null)
                            res.statusCode = HTTP_CREATED;
                                System.debug(JSON.serialize(body));
                            res.responseBody = Blob.valueOf(JSON.serialize(body));
                         }

     public static Order__c createOrder(Params p) {
       
        Order__c ord= new Order__c();
      //ord.Total_Price__c = getPrice(p.get('totalPrice',false));// not able to convert sting
        ord.Total_Quantity__c= Decimal.valueOf((p.get('totalQuatity',false))); // not able to convert the string into decimal
        ord.Buyer_Account__c = getBuyer(p.get('buyerName',false));
        ord.Order_Status__c  =p.get('status',false);
        ord.Payment_Type__c = p.get('payment',false);
        ord.Php_Id__c= p.get('phpId',false);
        ord.Seller_Account__c = getSeller(p.get('sellerName',false));
        ord.Product_Name__c = getProduct(p.get('productName',false));
         //  ord.Product_Name__c = p.get()
      
        return ord;
     }
   
     Public static id getBuyer(String buyerName){
   
        Account accounts = [Select Id, Name,RecordTypeid from Account where Name =:buyerName];
       
        return accounts.id ;
     }
   
    Public static Id getSeller(String sellerName){
   
        Account accounts = [Select Id, Name, RecordTypeid from Account where Name = :sellerName];
       
        return accounts.id ;
     }
  
    Public static id getProduct(String productName){
   
        Product__c product = [Select Id, Name from Product__c where Name = :productName Limit 1];
       
        return product.id ;
     }
 
    
     
    
    private static ResponseBody upsertSObject(SObject sObj) {
        System.debug(JSON.serializePretty(sObj));
        ResponseBody body = new ResponseBody();
        try {
            if (sObj instanceof Order__c )
                upsert (Order__c ) sObj ;
             
            body.id = sObj.id;
          }
        catch (Exception e) {
            body.addError(e);
          }
        return body;
    }

   
    private class Params {
        Map<String, String> params {get; private set;}
      
        String type {get; private set;}
       
       
        Params(Map<String, String> params) {
            this.params = params;
          //  totalPrice = params.get('totalPrice');
           // type = params.get('type');
           // System.assert(typeToRT.keySet().contains(type));
        }
       
        String get(String key) {
            return get(key, true);
        }
       
        String get(String key, Boolean prependType) {
            String value = params.get((prependType ? type + '_' : '') + key);
            return value == null ? '' : value;
        }
    }

    public class ResponseBody {
        public Id id {get; set;}
        public List<ResponseError> errors {get; set;}
        public String status {get; set;}

        public ResponseBody() {
            errors = new List<ResponseError>();
            status = STATUS_OK;
        }

        public void addError(DmlException e) {
            for (Integer i = 0; i < e.getNumDml(); i++)
                errors.add(new ResponseError(e, i));
        }

        public void addError(Exception e) {
            status = STATUS_FAIL;
            if (e instanceof DmlException)
                addError((DmlException) e);
            else
                errors.add(new ResponseError(e));
        }
    }


thanks,
Hareesh.