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

        // Can't be implemented since we always need to have a Database catalog object
        return null;
    }
    
    public String toJSONString(Database catalog_db) {
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            this.toJSONString(stringer, catalog_db);
            stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            System.exit(-1);
        }
        return stringer.toString();
    }

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    /**
     * 
     */
    @Override
    public String toJSONString() {
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            this.toJSONString(stringer);
            stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            System.exit(-1);
        }
        return stringer.toString();
    }

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    /**
     * 
     */
    @Override
    public String toJSONString() {
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            this.toJSONString(stringer);
            stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            System.exit(-1);
        }
        return stringer.toString();
    }

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    /**
     * 
     */
    @Override
    public String toJSONString() {
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            this.toJSONString(stringer);
            stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            System.exit(-1);
        }
        return stringer.toString();
    }

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     * @throws Exception
     */
    public static <V extends AbstractVertex, E extends AbstractEdge> void save(IGraph<V, E> graph, File output_path) throws IOException {
        if (debug.val) LOG.debug("Writing out graph to '" + output_path + "'");
        
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            GraphUtil.serialize(graph, stringer);
            stringer.endObject();
        } catch (Exception ex) {
            throw new IOException(ex);
        }
        
        String json = stringer.toString();
        try {
            FileUtil.writeStringToFile(output_path, JSONUtil.format(json));
        } catch (Exception ex) {
            throw new IOException(ex);
        }

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     * @param <T>
     * @param object
     * @return
     */
    public static <T extends JSONSerializable> String format(T object) {
        JSONStringer stringer = new JSONStringer();
        try {
            if (object instanceof JSONObject)
                return ((JSONObject) object).toString(2);
            stringer.object();
            object.toJSON(stringer);
            stringer.endObject();
        } catch (JSONException ex) {
            throw new RuntimeException(ex);
        }
        return (JSONUtil.format(stringer.toString()));
    }

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     * @param <T>
     * @param object
     * @return
     */
    public static String toJSONString(Object object) {
        JSONStringer stringer = new JSONStringer();
        try {
            if (object instanceof JSONSerializable) {
                stringer.object();
                ((JSONSerializable) object).toJSON(stringer);
                stringer.endObject();
            } else if (object != null) {
                Class<?> clazz = object.getClass();
                // stringer.key(clazz.getSimpleName());
                JSONUtil.writeFieldValue(stringer, clazz, object);
            }
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
        return (stringer.toString());
    }

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        if (ret != null)
            return (ret);
        if (catalog_item == null)
            return (null);


        JSONStringer stringer = new JSONStringer();
        try {
            createKey(catalog_item, stringer);
            // IMPORTANT: We have to convert all double quotes to single-quotes
            // so that
            // the keys don't get escaped when stored in other JSON objects
            ret = stringer.toString().replace("\"", "'");
            CACHE_CREATEKEY.put(catalog_item, ret);
        } catch (JSONException ex) {
            throw new RuntimeException("Failed to create catalog key for " + catalog_item, ex);
        }
        return (ret);

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    /**
     * 
     */
    @Override
    public String toJSONString() {
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            this.toJSONString(stringer);
            stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            System.exit(-1);
        }
        return stringer.toString();
    }

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        // First call the regular load() method to bring all of our options
        this.load(input_path, catalog_db);


        // Then construct a JSONObject from the map to override the parameters
        if (override.isEmpty() == false) {
            JSONStringer stringer = new JSONStringer();
            try {
                stringer.object();
                for (Entry<String, String> e : override.entrySet()) {
                    stringer.key(e.getKey().toUpperCase()).value(e.getValue());
                } // FOR
                stringer.endObject();
                this.fromJSON(new JSONObject(stringer.toString()), catalog_db);
            } catch (JSONException ex) {
                throw new IOException("Failed to load override parameters: " + override, ex);
            }
        }
    }

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