Examples of org.apache.wink.json4j.OrderedJSONObject

org.apache.wink.json4j.OrderedJSONObject
Extension of the basic JSONObject. This class allows control of the serialization order of attributes. The order in which items are put into the instance controls the order in which they are serialized out. For example, the last item put is the last item serialized.

JSON-able values are: null, and instances of String, Boolean, Number, JSONObject and JSONArray.

Instances of this class are not thread-safe.

                result = rootObject;
            } else {
                if (!ordered) {
                    result = new JSONObject();
                } else {
                    result = new OrderedJSONObject();
                }
            }


            if (lastToken != Token.TokenBraceL) throw new JSONException("Expecting '{' " + tokenizer.onLineCol() + " instead, obtained token: '" + lastToken + "'");
            lastToken = tokenizer.next();

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 */
public class OrderedJSONObjectTest extends JSONObjectTest {
    public void test_OrderedJson() {
        String JSON = "{\"attribute\":\"foo\",\"number\":100.959,\"boolean\":true}";
        try {
            OrderedJSONObject obj = new OrderedJSONObject(JSON);
            String jsonStr = obj.write(false);
            assertTrue(jsonStr.equals(JSON));
        } catch (Exception ex) {
            ex.printStackTrace();
            assertTrue(false);
        }

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     * Rest of removing the first and then adding it back in to see if it shifts to the end.
     */
    public void test_OrderedJsonMove() {
        String JSON = "{\"attribute\":\"foo\", \"number\":100.959, \"boolean\":true}";
        try {
            OrderedJSONObject obj = new OrderedJSONObject(JSON);
            String attribute = (String)obj.remove("attribute");
            obj.put("attribute",attribute);


            String jsonStr = obj.write(false);
            Iterator order = obj.getOrder();


            String[] expectedOrder = new String[] { "number", "boolean", "attribute" };
            int i = 0;
            while (order.hasNext()) {
                assertTrue(expectedOrder[i].equals((String)order.next()));

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     * Test of removing two entries and ensuring the order is as expected in output
     */
    public void test_OrderedJsonRemove() {
        String JSON = "{\"attribute\":\"foo\", \"number\":100.959, \"boolean\":true, \"banana\":\"sherbert\"}";
        try {
            OrderedJSONObject obj = new OrderedJSONObject(JSON);
            obj.remove("attribute");
            obj.remove("boolean");
            assertTrue(obj.toString().equals("{\"number\":100.959,\"banana\":\"sherbert\"}"));
        } catch (Exception ex) {
            ex.printStackTrace();
            assertTrue(false);
        }
    }

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     * Test of removing two entries and ensuring the order is as expected in output
     */
    public void test_OrderedJsonRemoveMove() {
        String JSON = "{\"attribute\":\"foo\", \"number\":100.959, \"boolean\":true, \"banana\":\"sherbert\"}";
        try {
            OrderedJSONObject obj = new OrderedJSONObject(JSON);
            obj.remove("attribute");
            Boolean b = (Boolean)obj.remove("boolean");
            obj.put("boolean", b);


            System.out.println("Ordering: " + obj.toString());


            assertTrue(obj.toString().equals("{\"number\":100.959,\"banana\":\"sherbert\",\"boolean\":true}"));
        } catch (Exception ex) {
            ex.printStackTrace();
            assertTrue(false);
        }
    }

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    /**
     * Test of multiple puts not affecting ordering.
     */
    public void test_OrderedJsonMultiPut() {
        try {
            OrderedJSONObject obj = new OrderedJSONObject();


            obj.put("Entry1", "Value1");
            obj.put("Entry2", "Value2");
            obj.put("Entry3", "Value3");
            obj.put("Entry2", "ReplacedValue2");
            String jsonStr = obj.write(true);
            System.out.println(jsonStr);


            Iterator order = obj.getOrder();
            ArrayList orderList = new ArrayList();
            StringBuffer buf = new StringBuffer("");
            while (order.hasNext()) {
                String next = (String)order.next();
                buf.append(next);

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    /**
     * Test of clone
     */
    public void test_OrderedClone() {
        try {
            OrderedJSONObject obj = new OrderedJSONObject();


            obj.put("Entry1", "Value1");
            obj.put("Entry2", "Value2");
            obj.put("Entry3", "Value3");
            obj.put("Entry2", "ReplacedValue2");


            OrderedJSONObject clone = (OrderedJSONObject)obj.clone();


            String jsonStr = clone.write(true);
            Iterator order = clone.getOrder();
            ArrayList orderList = new ArrayList();
            StringBuffer buf = new StringBuffer("");
            while (order.hasNext()) {
                String next = (String)order.next();
                buf.append(next);

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    public void test_OrderedJsonRead() {
        try {
            InputStream is = this.getClass().getClassLoader().getResourceAsStream("utf8_ordered.json");
            ArrayList orderList = new ArrayList();


            OrderedJSONObject obj = new OrderedJSONObject(is);
            is.close();


            String jsonStr = obj.write(true);
            Iterator order = obj.getOrder();
            while (order.hasNext()) {
                String next = (String) order.next();
                orderList.add(next);
            }
            assertTrue(orderList.get(0).equals("First_Entry"));
            assertTrue(orderList.get(1).equals("Second_Entry"));
            assertTrue(orderList.get(2).equals("Third_Entry"));


            //Validate the nested JSONObject was also contructed in an ordered manner.
            OrderedJSONObject jObject = (OrderedJSONObject)obj.get("Second_Entry");
            order = jObject.getOrder();
            orderList.clear();
            StringBuffer buf = new StringBuffer("");
            while (order.hasNext()) {
                String next = (String) order.next();
                orderList.add(next);

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org.apache.wink.json4j.tests.OrderedJSONObjectTest

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java.io.StringReader

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