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    Default Unanswered: Java 5 + ExtJS + Rest (Complex JSON structure)

    Unanswered: Java 5 + ExtJS + Rest (Complex JSON structure)


    I was given the task to implement a REST interface to make our Java application (wicket interface) to render ExtJS components and feed their stores using JSONs.

    We have a infrastructure that can serialize a Java object into a JSON, but the problem is that it is really complex.

    It's something like this:
    Code:
    class Person {
    private String name;
    }
    Code:
    {
    "&type":"class","value":"full.qualified.name.Person","&type":"String","value":"SomeName"
    }
    The issue here is that we don't know how to follow. Either we change our infrastructure, create a new one, or try to do something in the Javascript side.

    Do you guys have and toughts about this?

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    Ext JS Premium Member tvanzoelen's Avatar
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    Your server should deliver the json in the correct format that extjs can understand.

    Code:
    {
       persons: [ { name: 'somename' }, {name : 'someothername'} ]
    }
    I think you must use another serializer for your JSON objects. There are libraries for java available to do that. See http://json.org/java/ or http://www.json.org/ for good java libraries.

    And information like class and full.qualified.name.Person is not needed client side. So why send it to the browser? I think you should never send unwanted information, also bad for the performance.

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    Sencha Premium Member skirtle's Avatar
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    Your JSON isn't valid. You have duplicate keys in your objects. It won't work correctly with any standard parser.

    ExtJS has built-in support for most common JSON formats and can be coerced into working with formats it doesn't support but you need to be using valid JSON or it has no chance.

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    Ext JS Premium Member tvanzoelen's Avatar
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    It won't work correctly with any standard parser.
    Well, duplicate keys in the JSON were never a problem for the Ext parser.
    Would be a nice feature request.

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