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lib/model/bsdata.js

+var BSON = require('buffalo');
+
+module.exports.parse = function(obj)
+{
+
+  switch (typeof obj) {
+    case 'string':
+      var bsobj = JSON.parse(obj);
+      var data = bsobj.data;
+      if(bsobj.data_type=='binary' && bsobj.encoding=='base64'){
+        data = new Buffer(bsobj.data,'base64');
+      }
+      return new BSData(data,bsobj.data_type);
+
+    case 'object':
+      if (obj === null) {
+        return null;
+      }else if(obj instanceof Buffer){
+        var jsonobj = BSON.parse(obj);
+        return new BSData(jsonobj.data,jsonobj.data_type);
+      }else if(obj.data_type && obj.data){
+        return new BSData(obj.data,obj.data_type);
+      }else{
+        return null;
+      }
+    default :
+      return null;
+  }
+
+}
+
+module.exports.create = function(obj)
+{
+  switch (typeof obj) {
+    case 'string':
+      return new BSData(obj,'text');
+    case 'number':
+      return new BSData(obj.toString(),'text');
+    case 'object':
+      if (obj === null) {
+        return null;
+      }else if(obj instanceof Buffer){
+        //var encodeStr = obj.toString('base64');
+        return new BSData(obj,'binary');
+      }else{
+        return new BSData(obj,'object');
+      }
+    default :
+      return null;
+  }
+
+  return new BSData(data,tpy);
+}
+
+function BSData(data,type)
+{
+  // text|object|binary
+  this.type = type;
+  this.data = data;
+}
+
+BSData.prototype.serialize = function(type){
+  var bsdata = {
+            'object_type' : 'bsdata',
+            'data_type' : this.type,
+            'data' : this.data
+         };
+
+  if(type=='object'){
+    return bsdata;
+  }else if(type=='buffer'){
+    return BSON.serialize(bsdata);
+  }else{
+    //text type
+    if(this.type == 'binary'){
+        //encoding binary data
+        bsdata.data = this.data.toString('base64');
+        bsdata.encoding = 'base64';
+    }
+
+    return JSON.stringify(bsdata);
+  }
+
+}

lib/util/bsdata.js

-
-module.exports.create = function(obj)
-{
-  switch (typeof obj) {
-    case 'string':
-      return new BSData(obj,'string');
-    case 'number':
-      return new BSData(obj,'number');
-  }
-
-  return new BSData(data,tpy);
-}
-
-function BSData(data,type)
-{
-  this.type = type;
-  this.data = data;
-}

test/test.js

+var ctx = require('../context');
+var BSData = ctx.getLib('lib/model/bsdata');
+
+//var data = new Buffer('hello')
+var data = "hello\nworld"
+
+var bsdata = BSData.create(data);
+
+var sel = bsdata.serialize('object');
+
+console.log(sel.data);