Examples of org.json.JSONObject

org.json.JSONObject
A JSONObject is an unordered collection of name/value pairs. Its external form is a string wrapped in curly braces with colons between the names and values, and commas between the values and names. The internal form is an object having get and opt methods for accessing the values by name, and put methods for adding or replacing values by name. The values can be any of these types: Boolean, JSONArray, JSONObject, Number, String, or the JSONObject.NULL object. A JSONObject constructor can be used to convert an external form JSON text into an internal form whose values can be retrieved with the get and opt methods, or to convert values into a JSON text using the put and toString methods. A get method returns a value if one can be found, and throws an exception if one cannot be found. An opt method returns a default value instead of throwing an exception, and so is useful for obtaining optional values.
The generic get() and opt() methods return an object, which you can cast or query for type. There are also typed get and opt methods that do type checking and type coercion for you. The opt methods differ from the get methods in that they do not throw. Instead, they return a specified value, such as null.
The put methods add or replace values in an object. For example,
```
 myString = new JSONObject().put("JSON", "Hello, World!").toString(); 
```
produces the string {"JSON": "Hello, World"}.
The texts produced by the toString methods strictly conform to the JSON syntax rules. The constructors are more forgiving in the texts they will accept:
- An extra , (comma) may appear just before the closing brace.
- Strings may be quoted with ' (single quote).
- Strings do not need to be quoted at all if they do not begin with a quote or single quote, and if they do not contain leading or trailing spaces, and if they do not contain any of these characters: { } [ ] / \ : , # and if they do not look like numbers and if they are not the reserved words true, false, or null.
@author JSON.org @version 2014-05-03

        {
            props.put(name, value.getClass().isArray() ? new JSONArray(value) : value);
        }
        else
        {
            JSONObject jsonValue = new JSONObject();
            jsonValue.put("type", type.getName());
            jsonValue.put("value", value.getClass().isArray() ? new JSONArray(value) : value);
            props.put(name, jsonValue);
        }
    }

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        JSONArray array = new JSONArray();
        Enumeration<Object> e = properties.keys();
        while (e.hasMoreElements()) {
            String key = (String) e.nextElement();
            Object value = properties.get(key);
            JSONObject prop = new JSONObject();
            prop.put("name", key);
            if (value != null  && value.getClass().isArray()) {
                // TODO Test with primitive types
                prop.put("value", Arrays.toString((Object[]) value));
            } else if (value != null) {
                prop.put("value", value.toString());
            } else {
                prop.put("value", "no value");
            }
            array.put(prop);
        }
        return array;
    }

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            return null;
        }
        JSONArray array = new JSONArray();
        DependencyHandlerDescription desc = (DependencyHandlerDescription) hd;
        for (DependencyDescription dep : desc.getDependencies()) {
            JSONObject req = new JSONObject();
            req.put("specification",dep.getSpecification());
            req.put("id", dep.getId());
            req.put("state", StateUtils.getDependencyState(dep.getState()));
            req.put("policy", StateUtils.getDependencyBindingPolicy(dep.getPolicy()));
            req.put("optional", dep.isOptional());
            req.put("aggregate", dep.isMultiple());
            if (dep.getFilter() != null) {
                req.put("filter", dep.getFilter());
            }
            if (dep.getServiceReferences() != null  && dep.getServiceReferences().size() != 0) {
                req.put("matching",  getServiceReferenceList(dep.getServiceReferences()));
            }
            
            if (dep.getUsedServices() != null  && dep.getUsedServices().size() != 0) {
                req.put("used",  getServiceReferenceList(dep.getUsedServices()));
            }
            
            array.put(req);
        }

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     */
    private JSONArray getServiceReferenceList(List<ServiceReference> refs) throws JSONException {
        JSONArray array = new JSONArray();
        if (refs != null) {
            for (ServiceReference ref : refs) {
                JSONObject reference = new JSONObject();
                if (ref.getProperty("instance.name") == null) {
                    reference.put("id", ref.getProperty(Constants.SERVICE_ID));
                } else {
                    reference.put("id", ref.getProperty(Constants.SERVICE_ID));
                    reference.put("instance", ref.getProperty("instance.name"));
                }
                array.put(reference);
            }
        }
        return array;

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     * @param pw the writer where the json object is printed.
     * @throws IOException the JSON object cannot be written
     */
    private void getAllInstances(PrintWriter pw) throws IOException {
        try {
            JSONObject resp = new JSONObject();
            // Statline:
            resp.put("count", m_archs.size());
            resp.put("valid_count", StateUtils.getValidInstancesCount(m_archs));
            resp.put("invalid_count", StateUtils.getInvalidInstancesCount(m_archs));
            // End statline
            
            JSONArray instances = new JSONArray();
            for (Architecture arch : m_archs) {
                JSONObject instance = new JSONObject();
                instance.put("name", arch.getInstanceDescription().getName());
                instance.put("factory", arch.getInstanceDescription().getComponentDescription().getName());
                instance.put("state", StateUtils.getInstanceState(arch.getInstanceDescription().getState()));
                instances.put(instance);
            }
            resp.put("data", instances);
            
            pw.print(resp.toString());

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     * @param pw the writer when the json object is printed
     * @throws IOException the JSON object cannot be written
     */
    private void getAllFactories(PrintWriter pw) throws IOException {
        try {
            JSONObject resp = new JSONObject();
            // Statline:
            resp.put("count", m_factories.size());
            resp.put("valid_count", StateUtils.getValidFactoriesCount(m_factories));
            resp.put("invalid_count", StateUtils.getInvalidFactoriesCount(m_factories));
            // End statline


            JSONArray factories = new JSONArray();
            for (Factory factory : m_factories) {
                String version = factory.getVersion();
                String name = factory.getName();
                
                String state = StateUtils.getFactoryState(factory.getState());
                String bundle = factory.getBundleContext().getBundle().getSymbolicName()
                    + " (" + factory.getBundleContext().getBundle().getBundleId() + ")";
                JSONObject fact = new JSONObject();
                fact.put("name", name);
                if (version != null) {
                    fact.put("version", version);
                }
                fact.put("bundle", bundle);
                fact.put("state", state);
                factories.put(fact);
            }
            resp.put("data", factories);
            
            pw.print(resp.toString());

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     * @param pw the writer when the json object is printed
     * @throws IOException the JSON object cannot be written
     */
    private void getAllHandlers(PrintWriter pw) throws IOException {
        try {
            JSONObject resp = new JSONObject();


            // Statline:
            resp.put("count", m_handlers.size());
            resp.put("valid_count", StateUtils.getValidHandlersCount(m_handlers));
            resp.put("invalid_count", StateUtils.getInvalidHandlersCount(m_handlers));
            // End statline
            
            JSONArray factories = new JSONArray();
            for (HandlerFactory factory : m_handlers) {
                String version = factory.getVersion();
                String name = factory.getHandlerName();
                
                String state = StateUtils.getFactoryState(factory.getState());
                String bundle = factory.getBundleContext().getBundle().getSymbolicName()
                    + " (" + factory.getBundleContext().getBundle().getBundleId() + ")";
                JSONObject fact = new JSONObject();
                fact.put("name", name);
                if (version != null) {
                    fact.put("version", version);
                }
                fact.put("bundle", bundle);
                fact.put("state", state);
                fact.put("type", factory.getType());
                if (! factory.getMissingHandlers().isEmpty()) {
                    fact.put("missing", factory.getMissingHandlers().toString());
                }
                factories.put(fact);
            }
            resp.put("data", factories);

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            pw.println("The factory " + name + " does not exist or is private");
            return;
        }
        
        try {
            JSONObject resp = new JSONObject();
            
            // Statline.
            resp.put("count", m_factories.size());
            resp.put("valid_count", StateUtils.getValidFactoriesCount(m_factories));
            resp.put("invalid_count", StateUtils.getInvalidFactoriesCount(m_factories));
            // End of the statline
            
            // Factory object
            JSONObject data = new JSONObject();
            data.put("name", factory.getName());
            data.put("state", StateUtils.getFactoryState(factory.getState()));
            
            String bundle = factory.getBundleContext().getBundle().getSymbolicName()
            + " (" + factory.getBundleContext().getBundle().getBundleId() + ")";
            data.put("bundle", bundle);
            
            // Provided service specifications
            if (factory.getComponentDescription().getprovidedServiceSpecification().length != 0) {
                JSONArray services = new JSONArray
                    (Arrays.asList(factory.getComponentDescription().getprovidedServiceSpecification()));
                data.put("services", services);
            }
            
            // Properties
            PropertyDescription[] props = factory.getComponentDescription().getProperties();
            if (props != null  && props.length != 0) {
                JSONArray properties = new JSONArray();
                for (int i = 0; i < props.length; i++) {
                    JSONObject prop = new JSONObject();
                    prop.put("name", props[i].getName());
                    prop.put("type", props[i].getType());
                    prop.put("mandatory", props[i].isMandatory());
                    prop.put("immutable", props[i].isImmutable());
                    if (props[i].getValue() != null) {
                        prop.put("value", props[i].getValue());
                    }
                    properties.put(prop);
                }
                data.put("properties", properties);
            }

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                "does not exposed its architecture");
            return;
        }
        
        try {
            JSONObject resp = new JSONObject();
            resp.put("count", m_factories.size());
            resp.put("valid_count", StateUtils.getValidFactoriesCount(m_factories));
            resp.put("invalid_count", StateUtils.getInvalidFactoriesCount(m_factories));
            
            // instance object
            JSONObject data = new JSONObject();
            data.put("name", instance.getName());
            data.put("state", StateUtils.getInstanceState(instance.getState()));
            data.put("factory", instance.getComponentDescription().getName());
            
            JSONArray services = getProvidedServiceDetail(instance.getHandlerDescription("org.apache.felix.ipojo:provides"));
            if (services != null) {
                data.put("services", services);
            }
            
            JSONArray reqs = getRequiredServiceDetail(instance.getHandlerDescription("org.apache.felix.ipojo:requires"));
            if (reqs != null) {
                data.put("req", reqs);
            }
            
            data.put("architecture", instance.getDescription().toString());
            resp.put("data", data);
            
            pw.print(resp.toString());
        } catch (JSONException e) {
            // Propagate the exception.

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        JSONArray array = new JSONArray();
        ProvidedServiceHandlerDescription desc = (ProvidedServiceHandlerDescription) hd;


        for (ProvidedServiceDescription ps : desc.getProvidedServices()) {
            JSONObject svc = new JSONObject();
            String spec = Arrays.toString(ps.getServiceSpecifications());
            if (spec.startsWith("[")) {
                spec = spec.substring(1, spec.length() - 1);
            }
            svc.put("specification", spec);
            svc.put("state", StateUtils.getProvidedServiceState(ps.getState()));
            
            if (ps.getServiceReference() != null) {
                svc.put("id", (Long) ps.getServiceReference().getProperty(Constants.SERVICE_ID));
            }
            
            if (ps.getProperties() != null  &&!  ps.getProperties().isEmpty()) {
                svc.put("properties", getServiceProperties(ps.getProperties()));
            }


            array.put(svc);
        }

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