Example usage for com.google.gwt.json.client JSONValue isNull

List of usage examples for com.google.gwt.json.client JSONValue isNull

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Introduction

In this page you can find the example usage for com.google.gwt.json.client JSONValue isNull.

Prototype

public JSONNull isNull()

Source Link

Document

Returns a non-null reference if this JSONValue is really a JSONNull.

Usage

From source file:com.kk_electronic.kkportal.core.rpc.SimpleEncoder.java

License:Open Source License

@SuppressWarnings("unchecked")
private <T> T decodeFromJson(List<Class<?>> resultSubTypes, JSONValue jsonvalue) {
    if (jsonvalue == null || jsonvalue.isNull() != null)
        return null;
    Class<?> target = resultSubTypes.get(0);
    if (target == List.class) {
        List<T> list = new ArrayList<T>();
        JSONArray ja = jsonvalue.isArray();
        for (int i = 0, l = ja.size(); i < l; i++) {
            list.add((T) decodeFromJson(resultSubTypes.subList(1, resultSubTypes.size()), ja.get(i)));
        }/*from   w w  w.j  a v  a 2s  . co m*/
        return (T) list;
    }
    if (target == Map.class) {
        if (resultSubTypes.get(1) == String.class) {
            Map<String, Object> map = new HashMap<String, Object>();
            JSONObject jo = jsonvalue.isObject();
            for (String key : jo.keySet()) {
                map.put(key, decodeFromJson(resultSubTypes.subList(2, resultSubTypes.size()), jo.get(key)));
            }
            return (T) map;
        }
    }
    if (target == Response.class) {
        JSONObject jo = jsonvalue.isObject();
        return (T) new ResponseDTO(jo);
    }
    if (target == String.class) {
        return (T) jsonvalue.isString().stringValue();
    }
    if (target == TabInfo.class) {
        return (T) new TabInfoDTO(jsonvalue.isObject());
    }
    if (target == ModuleInfo.class) {
        return (T) new ModuleInfoDTO(jsonvalue.isObject());
    }
    if (target == Object.class) {
        return (T) jsonvalue;
    }
    GWT.log("DECODING-Can't convert type " + target.getName());
    return null;
}

From source file:com.parabay.client.utils.JSONCodec.java

License:Apache License

/**
 * Converts a JSONValue to a Java object.
 * /*from  w  w w .ja v  a2s.  com*/
 * @param value
 * @return
 */
private Object buildJavaObjectFromJSONValue(JSONValue value) {
    if (value.isNull() != null) {
        return null;
    }
    if (value.isBoolean() != null) {
        return Boolean.valueOf(value.isBoolean().booleanValue());
    }
    if (value.isString() != null) {
        return value.isString().stringValue();
    }
    if (value.isNumber() != null) {
        return buildNumber(value.isNumber().toString());
    }
    if (value.isArray() != null) {
        return buildJavaArrayFromJSONArray(value.isArray());
    }
    if (value.isObject() != null) {
        return buildJavaMapFromJSONObject(value.isObject());
    }
    return null;
}

From source file:com.smartgwt.mobile.client.data.DataSource.java

License:Open Source License

private static RecordList extractRecordList(JSONArray dataArr, Map<String, DataSourceField> fields) {
    final DataSourceField pkField = getPrimaryKeyField(fields);
    final String pkFieldName = pkField == null ? "id" : pkField.getName();

    final RecordList records = new RecordList();
    for (int i = 0; i < dataArr.size(); ++i) {
        final JSONValue datumVal = dataArr.get(i);
        if (datumVal == null)
            continue;
        JSONObject datumObj = datumVal.isObject();
        if (datumObj != null) {
            records.add(extractRecord(datumObj, fields));
        } else {//from  ww  w .  j a va2  s .com
            if (datumVal.isNull() != null)
                continue;

            String idValue;
            JSONString datumStr = datumVal.isString();
            if (datumStr != null)
                idValue = datumStr.stringValue();
            else
                idValue = datumVal.toString();

            idValue = idValue.trim();
            final Record record = new Record();
            record.setAttribute(pkFieldName, idValue);
            records.add(record);
        }
    }

    return records;
}

From source file:com.smartgwt.mobile.client.data.DSResponse.java

License:Open Source License

DSResponse(DSRequest dsRequest, int status, JSONObject responseObj) {
    init(dsRequest);//from   w  w w. j  av  a  2  s.  c o  m
    Map<String, String> errors = null;

    if (responseObj != null) {
        JSONValue val = responseObj.get("status");
        JSONNumber num = (val == null ? null : val.isNumber());
        if (num != null) {
            status = (int) num.doubleValue();
        }
        val = responseObj.get("startRow");
        num = (val == null ? null : val.isNumber());
        if (num != null) {
            setStartRow(Integer.valueOf((int) num.doubleValue()));
        }
        val = responseObj.get("endRow");
        num = (val == null ? null : val.isNumber());
        if (num != null) {
            setEndRow(Integer.valueOf((int) num.doubleValue()));
        }
        val = responseObj.get("totalRows");
        num = (val == null ? null : val.isNumber());
        if (num != null) {
            setTotalRows(Integer.valueOf((int) num.doubleValue()));
        }
        val = responseObj.get("errors");
        JSONObject errorsObj = (val == null ? null : val.isObject());
        if (errorsObj != null) {
            errors = new HashMap<String, String>();
            for (final String key : errorsObj.keySet()) {
                val = errorsObj.get(key);
                if (val == null || val.isNull() != null)
                    continue;
                final String errorMessage;
                JSONString str = val.isString();
                if (str != null)
                    errorMessage = str.stringValue();
                else
                    errorMessage = val.toString();
                errors.put(key, errorMessage);
            }
        }
    }

    setStatus(status);
    if (errors != null)
        setErrors(errors);

    // No need to handle the response data here.
}

From source file:com.vaadin.client.communication.JsonDecoder.java

License:Apache License

/**
 * Decode a JSON array with two elements (type and value) into a client-side
 * type, recursively if necessary.// w  w w.  ja va2 s.  c om
 * 
 * @param jsonValue
 *            JSON value with encoded data
 * @param connection
 *            reference to the current ApplicationConnection
 * @return decoded value (does not contain JSON types)
 */
public static Object decodeValue(Type type, JSONValue jsonValue, Object target,
        ApplicationConnection connection) {

    // Null is null, regardless of type
    if (jsonValue.isNull() != null) {
        return null;
    }

    String baseTypeName = type.getBaseTypeName();
    if (Map.class.getName().equals(baseTypeName) || HashMap.class.getName().equals(baseTypeName)) {
        return decodeMap(type, jsonValue, connection);
    } else if (List.class.getName().equals(baseTypeName) || ArrayList.class.getName().equals(baseTypeName)) {
        return decodeList(type, (JSONArray) jsonValue, connection);
    } else if (Set.class.getName().equals(baseTypeName)) {
        return decodeSet(type, (JSONArray) jsonValue, connection);
    } else if (String.class.getName().equals(baseTypeName)) {
        return ((JSONString) jsonValue).stringValue();
    } else if (Integer.class.getName().equals(baseTypeName)) {
        return Integer.valueOf(String.valueOf(jsonValue));
    } else if (Long.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Long.valueOf(String.valueOf(jsonValue));
    } else if (Float.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Float.valueOf(String.valueOf(jsonValue));
    } else if (Double.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Double.valueOf(String.valueOf(jsonValue));
    } else if (Boolean.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Boolean.valueOf(String.valueOf(jsonValue));
    } else if (Byte.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Byte.valueOf(String.valueOf(jsonValue));
    } else if (Character.class.getName().equals(baseTypeName)) {
        // TODO handle properly
        return Character.valueOf(((JSONString) jsonValue).stringValue().charAt(0));
    } else if (Connector.class.getName().equals(baseTypeName)) {
        return ConnectorMap.get(connection).getConnector(((JSONString) jsonValue).stringValue());
    } else {
        return decodeObject(type, jsonValue, target, connection);
    }
}

From source file:edu.nrao.dss.client.widget.explorers.Explorer.java

License:Open Source License

protected void addRecord(HashMap<String, Object> fields) {
    JSONRequest.post(rootURL, fields, new JSONCallbackAdapter() {
        @Override//w w w  .j  av  a  2 s. c  o  m
        public void onSuccess(JSONObject json) {
            BaseModelData model = new BaseModelData();
            for (int i = 0; i < modelType.getFieldCount(); ++i) {
                DataField field = modelType.getField(i);
                String fName = field.getName();
                if (json.containsKey(fName)) {
                    // Set model value dependent on data type
                    JSONValue value = json.get(fName);
                    if (value.isNumber() != null) {
                        double numValue = value.isNumber().doubleValue();
                        // Note: we're treating even integer values like doubles here.  Doesn't appear
                        // to be an issue.  1.0 is displayed as 1 anyways.
                        model.set(fName, numValue);
                    } else if (value.isBoolean() != null) {
                        model.set(fName, value.isBoolean().booleanValue());
                    } else if (value.isString() != null) {
                        model.set(fName, value.isString().stringValue());
                    } else if (value.isNull() != null) {
                        // not raising an error seems to be fine.
                    } else {
                        Window.alert("unknown JSON value type");
                    }
                }
            }
            grid.stopEditing();
            store.insert(model, 0);
            //grid.getView().refresh(true);
            grid.getSelectionModel().select(model, false);
        }
    });
}

From source file:es.deusto.weblab.client.lab.comm.LabSerializerJSON.java

License:Open Source License

@Override
public ResponseCommand parseSendCommandResponse(String responseText)
        throws SerializationException, SessionNotFoundException, NoCurrentReservationException,
        UserProcessingException, WebLabServerException {
    // "{\"result\": {\"commandstring\": null}, \"is_exception\": false}"
    final JSONObject result = this.parseResultObject(responseText);
    final JSONValue value = result.get("commandstring");
    if (value.isNull() != null)
        return new EmptyResponseCommand();
    final String commandString = this.json2string(value);
    return new ResponseCommand(commandString);
}

From source file:org.cruxframework.crux.core.client.utils.JsUtils.java

License:Apache License

/**
 * Extract the associated native javascript object from the given json object
 * @param jsonValue/*from   w ww. ja va  2  s.com*/
 * @return
 */
public static JavaScriptObject fromJSONValue(JSONValue jsonValue) {
    if (jsonValue.isNull() != null) {
        return null;
    }
    JSONArray jsonArray = jsonValue.isArray();
    if (jsonArray != null) {
        return jsonArray.getJavaScriptObject();
    }
    return jsonValue.isObject().getJavaScriptObject();
}

From source file:org.geomajas.gwt2.client.service.JsonService.java

License:Open Source License

/**
 * Get a child JSON object from a parent JSON object.
 * /*from   ww  w  .ja  v a2s.com*/
 * @param jsonObject The parent JSON object.
 * @param key The name of the child object.
 * @return Returns the child JSON object if it could be found, or null if the value was null.
 * @throws JSONException In case something went wrong while searching for the child.
 */
public static JSONObject getChild(JSONObject jsonObject, String key) throws JSONException {
    checkArguments(jsonObject, key);
    JSONValue value = jsonObject.get(key);
    if (value != null) {
        if (value.isObject() != null) {
            return value.isObject();
        } else if (value.isNull() != null) {
            return null;
        }
        throw new JSONException("Child is not a JSONObject, but a: " + value.getClass());
    }
    return null;
}

From source file:org.geomajas.gwt2.client.service.JsonService.java

License:Open Source License

/**
 * Get a child JSON array from a parent JSON object.
 * /*from   w  w  w .  j  av  a  2 s. c o m*/
 * @param jsonObject The parent JSON object.
 * @param key The name of the child object.
 * @return Returns the child JSON array if it could be found, or null if the value was null.
 * @throws JSONException In case something went wrong while searching for the child.
 */
public static JSONArray getChildArray(JSONObject jsonObject, String key) throws JSONException {
    checkArguments(jsonObject, key);
    JSONValue value = jsonObject.get(key);
    if (value != null) {
        if (value.isArray() != null) {
            return value.isArray();
        } else if (value.isNull() != null) {
            return null;
        }
        throw new JSONException("Child is not a JSONArray, but a: " + value.getClass());
    }
    return null;
}