Converting custom Object to JSON object

[anjibman]

Hi All,

I am trying to send the query result to view in JSON format. I am using DAO pattern so I have Transfer Object representing the table and my query create collection of such object from the result set. Until now I have been sending this collection to view through request object.

Now I am looking a way so that I can convert this collection to JSON objects in less code.

Thanks,
Anjib

[Kor]

But in javaScript a custom object is a JSON object. I don't sense your request. Can you detail your aim, please? With some code examples, if possible.

[anjibman]

I am using DAO pattern in Struts 1.3.8 so
1. I have method Collection getAll() in DAO
public Collection getAll(){
.................
Collection coll = new ArrayList();
ResultSet rs = stmtSelect.executeQuery();
while(rs.next()){
//Read all columns and add to Collection 'coll'
}
return coll;
}

2. Then in my exuecute() method of Action class I just get that collection
execute(){
MyDAO daoObj = new MyDAO();
Collection myResults = daoObj.getAll();
//I need to convert this result to JSONObject to pass to view
}

Thanks

[Kor]

Use the method JSON.stringify(object_reference):
https://developer.mozilla.org/en/JSON
http://msdn.microsoft.com/en-us/libr...=vs.85%29.aspx

[rnd me]

you can define .toJSON() methods for any enumerable property type that doesn't have a usable toString() for JSON, like Function or Element...


for example:

//new serializer methods:
Function.prototype.toJSON=function(){return this+'';}
Element.prototype.toJSON=function(){return this.value||this.text||this.textContent||this.innerHTML||"";}

//data to be serialized:
var o={
  num: 1, 
  fun: function me(){return this;},
  dom: document.getElementsByTagName("title")[0]
};

//test of json serialization with custom method:
alert(JSON.stringify(o, null, "\t"));