Equivalent data type in standard or custom object to persists blob data?

Question

I have built a webservice in salesforce so that it is being consumed from SAP. So, when a sales order is created in SAP, it would call the salesforce webservice and post the sales order details and also a pdf file as xstring (a data type in SAP). I have used blob field to get the pdf file from SAP. Now, i need to persist the data in that blob field to a field in one of the custom object.

Is there any equivalent data type in standard or custom object to store blob data? Please suggest.

 global without sharing class  SOBlockWebService{
        //webService static List<SOBlockResponseDTO> getSOBlock(List<SOBlockRequestDTO> SOBlock)  
        webService static void getSOBlock(List<SOBlockRequestDTO> SOBlock)
        {  
                List<SOBlockResponseDTO> lstSOBlockDTO = new List<SOBlockResponseDTO> {};
          //************************remaining code goes here*************
        }
    }

and the inner class to handle the input. Here, i have declared a blob variable to get the pdf file stream from SAP. Is that correct data type for the file stream?

global class SOBlockRequestDTO {
        webservice String ApplicationType {get;set;}
        webservice String CustomerNumber {get;set;}
        webservice String DocDate {get;set;}
        webservice String DocTime {get;set;}
        webservice String Timestamp {get;set;}
        webservice String Message {get;set;}
        webservice String Context1 {get;set;}
        webservice String Context2 {get;set;}
        webservice String Context3 {get;set;}
        webservice String Context4 {get;set;}
        webservice String Context5 {get;set;}
        webservice String Context6 {get;set;}
        webservice String Status {get;set;}
        webservice Blob PDFAttachment {get;set;}

        public SOBlockRequestDTO(String ApplicationType,String CustomerNumber, String DocDate, String DocTime, String Timestamp, String Message, String Context1, String Context2, String Context3, String Context4, String Context5, String Context6, String Status, Blob PDFAttachment) {
            this.ApplicationType = ApplicationType;
            this.CustomerNumber = CustomerNumber;
            this.DocDate = DocDate;
            this.DocTime = DocTime;
            this.Timestamp = Timestamp;
            this.Message = Message;
            this.Context1 = Context1;
            this.Context2 = Context2;
            this.Context3 = Context3;
            this.Context4 = Context4;
            this.Context5 = Context5;
            this.Context6 = Context6;
            this.Status = Status;
            this.PDFAttachment = PDFAttachment;
        }
    }

Answer 1

Baskaran, there is no direct equivalent field type to Blob data type in salesforce.

here's an open idea if you are interested.

your options would be

• store the pdf as an Attachment linked to the record you are creating/updating
• store the file as a document and have a link to the document in a custom field in your custom object..
• store the file content into rich text / long text area field (not a good option as you have size limits)

you can then have a visualforce page that can display the pdf file from one of the above options which you can embed into the custom object page layout..

also, i noticed you have marked all your variables in the class as webservice which is not required. marking the method as webservice alone should be fine.