Examples of org.json.JSONStringer

org.json.JSONStringer
JSONStringer provides a quick and convenient way of producing JSON text. The texts produced strictly conform to JSON syntax rules. No whitespace is added, so the results are ready for transmission or storage. Each instance of JSONStringer can produce one JSON text.
A JSONStringer instance provides a value method for appending values to the text, and a key method for adding keys before values in objects. There are array and endArray methods that make and bound array values, and object and endObject methods which make and bound object values. All of these methods return the JSONWriter instance, permitting cascade style. For example,
```
 myString = new JSONStringer().object().key("JSON").value("Hello, World!") .endObject().toString(); 
```
which produces the string
```
 {"JSON":"Hello, World!"} 
```
The first method called must be array or object. There are no methods for adding commas or colons. JSONStringer adds them for you. Objects and arrays can be nested up to 20 levels deep.
This can sometimes be easier than using a JSONObject to build a string. @author JSON.org @version 2008-09-18

    @Test
    @InSequence(1)
    public void testAddMember() throws Exception {
        HttpPost post = new HttpPost(contextPath.toString() + API_PATH);
        post.setHeader("Content-Type", "application/json");
        String newMemberJSON = new JSONStringer().object()
                .key("name").value(NEW_MEMBER_NAME)
                .key("email").value(NEW_MEMBER_EMAIL)
                .key("phoneNumber").value(NEW_MEMBER_PHONE)
                .endObject().toString();
        post.setEntity(new StringEntity(newMemberJSON));

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{
    JSONWriter json;


    public JSONWriterSerializer()
    {
        this.json = new JSONStringer();
    }

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   public void marshal(ReadResourceModel model, OutputStream outputStream) throws BindingException
   {
      PrintWriter printWriter = new PrintWriter(outputStream);
      try
      {
         JSONStringer json = new JSONStringer();
         json.object().key("description").value(model.getDescription());
         json.key("children").array();
         for (String child : model.getChildren())
         {
            json.object().key("name").value(child);
            NamedDescription nd = model.getChildDescription(child);
            if (nd != null)
            {
               json.key("description").value(nd.getDescription());
            }
            json.endObject();
         }
         json.endArray().key("operations").array();
         for (NamedDescription nd : model.getOperations())
         {
            json.object().key("operation-name").value(nd.getName()).key("operation-description").value(nd.getDescription()).endObject();
         }
         json.endArray().endObject();


         printWriter.write(new JSONObject(json.toString()).toString(3));
         printWriter.flush();
      }
      catch (JSONException e)
      {
         throw new BindingException("Could not marshal to JSON format", e);

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                    result = jsonObject.toString(getIndentingSize());
                } else {
                    result = jsonObject.toString();
                }
            } else if (this.jsonValue instanceof JSONStringer) {
                JSONStringer jsonStringer = (JSONStringer) this.jsonValue;
                result = jsonStringer.toString();
            } else if (this.jsonValue instanceof JSONTokener) {
                JSONTokener jsonTokener = (JSONTokener) this.jsonValue;
                result = jsonTokener.toString();
            }
        } else if (this.jsonRepresentation != null) {

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        Token lBCT = new Token(lNS, "event");
        lBCT.put("name", "init");


        String lData = null;
        try {
          JSONStringer jsonStringer = new JSONStringer();
          // start main object
          jsonStringer.object();
          // iterate through all items (fields) of the token
          Iterator<String> lIterator = sharedObjects.getKeys().iterator();
          while (lIterator.hasNext()) {
            String lKey = lIterator.next();
            Object lVal = sharedObjects.get(lKey);
            if (lVal instanceof Collection) {
              jsonStringer.key(lKey).array();
              for (Object item : (Collection) lVal) {
                jsonStringer.value(item);
              }
              jsonStringer.endArray();
            } else {
              jsonStringer.key(lKey).value(lVal);
            }
          }
          // end main object
          jsonStringer.endObject();
          lData = jsonStringer.toString();
        } catch (JSONException ex) {
          log.error(ex.getClass().getSimpleName() + ": " + ex.getMessage());
        }
        lBCT.put("value", lData);
        getServer().sendToken(aConnector, lBCT);

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     * @throws JSONException
     *             When JSON string could not be constructed.
     */
    public String getMidiDeviceInfo() throws JSONException
    {
        final JSONStringer js = new JSONStringer();
        js.array();
        for (final Info info : MidiSystem.getMidiDeviceInfo())
        {
            js.object();
            js.key("name").value(info.getName());
            js.key("description").value(info.getDescription());
            js.key("vendor").value(info.getVendor());
            js.key("version").value(info.getVersion());
            js.endObject();
        }
        js.endArray();
        return js.toString();
    }

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     *             When JSON data could not be constructed.
     */
    public String getReceivers(final int deviceHandle) throws JSONException
    {
        final MidiDevice device = resolveDeviceHandle(deviceHandle);
        final JSONStringer json = new JSONStringer();
        json.array();
        for (final Receiver receiver : device.getReceivers())
        {
            json.value(System.identityHashCode(receiver));
        }
        json.endArray();
        return json.toString();
    }

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     *             When JSON data could not be constructed.
     */
    public String getTransmitters(final int deviceHandle) throws JSONException
    {
        final MidiDevice device = resolveDeviceHandle(deviceHandle);
        final JSONStringer json = new JSONStringer();
        json.array();
        for (final Transmitter transmitter : device.getTransmitters())
        {
            json.value(System.identityHashCode(transmitter));
        }
        json.endArray();
        return json.toString();
    }

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     */
    public String getMidiDeviceInfo(final int deviceHandle)
        throws JSONException
    {
        final MidiDevice device = resolveDeviceHandle(deviceHandle);
        final JSONStringer json = new JSONStringer();
        deviceInfo(json, device.getDeviceInfo());
        return json.toString();
    }

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    @Override
    public void send(final MidiMessage message, final long timeStamp)
    {
        try
        {
            final JSONStringer json = new JSONStringer();
            json.object();
            json.key("status").value(message.getStatus());
            json.key("message");
            json.array();
            final byte[] data = message.getMessage();
            final int max = Math.min(data.length, message.getLength());
            for (int i = 0; i < max; i++)
                json.value(data[i] & 0xff);
            json.endArray();
            if (message instanceof ShortMessage)
                processShortMessage((ShortMessage) message, json);
            else if (message instanceof MetaMessage)
                processMetaMessage((MetaMessage) message, json);
            else if (message instanceof SysexMessage)
                processSysexMessage((SysexMessage) message, json);
            json.endObject();
            this.applet.execJSMethod("messageReceived",
                System.identityHashCode(this),
                json.toString(), timeStamp);
        }
        catch (final JSONException e)
        {
            throw new RuntimeException(e.toString(), e);
        }

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