informixdb/test/test-byte-insert.js

Informix native node.js driver

var common = require("./common")
    , informixdb = require("../")
    , assert = require("assert")
    , fs = require('fs')
    , cn = common.connectionString;

informixdb.open(cn, function (err,conn) 
{
  if (err) 
  {
    console.log(err);
    process.exit(-1);
  }
  try {
      conn.querySync("drop table mytab");
  } catch (e) {};
  try {
    conn.querySync("create table mytab (empId int, photo BYTE, desc TEXT)");
    } catch (e) {};
  
  var fimg1= 'data/phool.jpg';
  var ftext= 'data/desc.txt';

  var img1= fs.readFileSync(fimg1,'binary');
  var text= fs.readFileSync(ftext,'ascii');
  var len1  = fs.statSync(fimg1)["size"];
  var len2  = fs.statSync(ftext)["size"];
 
  conn.prepare("insert into mytab(empId, photo, desc) VALUES (?, ?, ?)", 
      function (err, stmt) 
   {
    if (err) 
    {
      console.log(err);
      return conn.closeSync();
    }
    var photo = {DataType: "BYTE", Data:img1};
    var desc = {DataType: "TEXT", Data: text};
	stmt.execute([18, photo, desc], function (err, result) 
	{
      if( err ) console.log(err);  
      else result.closeSync();
	  
	  conn.prepare("select * from mytab", function (err, stmt)
      {
        if(err) 
        {
          console.log(err);
          return conn.closeSync();
        }

        stmt.execute([], function(err, result) {
          if(err) console.log(err);
          else 
          {
            data = result.fetchAllSync();
            fs.writeFileSync('phool2.jpg', data[0].photo, 'binary');
            fs.writeFileSync('desc2.txt', data[0].desc, 'ascii');
			
			result.closeSync();
            try {
                conn.querySync("drop table mytab");
            } catch (e) {};
            
            var size1 = fs.statSync("phool2.jpg")["size"];
            var size2 = fs.statSync("desc2.txt")["size"];
            console.log("Lengths before  = " + len1+ ", " + len2);
            console.log("Lengths  after  = " + size1+ ", " + size2);
            assert(len1, size1);
            assert(len2, size2);

            fs.unlinkSync("phool2.jpg");
            fs.unlink("desc2.txt", function () { console.log('done'); });
          }
        });
      });
	});
  });
});