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:org.geomajas.gwt2.client.service.JsonService.java

License:Open Source License

/**
 * checks if a certain object value is null.
 * //from   w  w w .  j a va  2 s .com
 * @param jsonObject The object to get the key value from.
 * @param key The name of the key to search the value for.
 * @throws JSONException In case something went wrong while parsing.
 */
public static boolean isNullObject(JSONObject jsonObject, String key) throws JSONException {
    checkArguments(jsonObject, key);
    JSONValue value = jsonObject.get(key);

    boolean isNull = false;
    if (value == null || value.isNull() != null) {
        isNull = true;
    }
    return isNull;
}

From source file:org.geomajas.gwt2.plugin.wms.client.service.WmsServiceImpl.java

License:Open Source License

@Override
public void getFeatureInfo(ViewPort viewPort, final WmsLayer wmsLayer, Coordinate location, String format,
        final Callback<List<Feature>, String> callback) {
    final String url = getFeatureInfoUrl(viewPort, wmsLayer, location, format.toString());

    // we can only handle json for now
    if (!GetFeatureInfoFormat.JSON.toString().equals(format)) {
        callback.onFailure("Client does not support " + format + " format");
    }/*from   w ww .j  a va2 s . com*/
    RequestBuilder builder = requestBuilderFactory.create(RequestBuilder.GET, url);
    try {
        builder.sendRequest(null, new RequestCallback() {

            public void onError(Request request, Throwable e) {
                callback.onFailure(e.getMessage());
            }

            public void onResponseReceived(Request request, Response response) {
                if (200 == response.getStatusCode()) {
                    JSONValue jsonValue = JsonService.parse(response.getText());
                    FeatureCollection featureCollection;
                    if (jsonValue.isObject() != null) {
                        if (wmsLayer instanceof FeaturesSupported) {
                            FeaturesSupported featuresSupported = (FeaturesSupported) wmsLayer;
                            featureCollection = jsonFeatureFactory.createCollection(jsonValue.isObject(),
                                    featuresSupported);
                        } else {
                            featureCollection = jsonFeatureFactory.createCollection(jsonValue.isObject(), null);
                        }
                        callback.onSuccess(featureCollection.getFeatures());
                    } else if (jsonValue.isNull() != null) {
                        callback.onFailure("Response was empty");
                    }
                } else {
                    callback.onFailure(response.getText());
                }
            }
        });
    } catch (RequestException e) {
        // Couldn't connect to server
        callback.onFailure(e.getMessage());
    }
}

From source file:org.jboss.errai.common.client.json.JSONDecoderCli.java

License:Apache License

private static Object _decode(JSONValue v, DecodingContext ctx) {
    if (v.isString() != null) {
        return v.isString().stringValue();
    } else if (v.isNumber() != null) {
        return v.isNumber().doubleValue();
    } else if (v.isBoolean() != null) {
        return v.isBoolean().booleanValue();
    } else if (v.isNull() != null) {
        return null;
    } else if (v instanceof JSONObject) {
        return decodeObject(v.isObject(), ctx);
    } else if (v instanceof JSONArray) {
        return decodeList(v.isArray(), ctx);
    } else {// w  w w  .jav a 2 s.co m
        throw new RuntimeException("unknown encoding");
    }
}

From source file:org.jboss.errai.jpa.client.local.ErraiManagedType.java

License:Apache License

protected <Y> void parseSingularJsonReference(X targetEntity, ErraiSingularAttribute<? super X, Y> attr,
        JSONValue attrJsonValue, ErraiEntityManager eem) {

    if (attrJsonValue == null || attrJsonValue.isNull() != null)
        return;/*from w  ww  . java  2 s .c om*/

    Key<Y, ?> key = (Key<Y, ?>) Key.fromJsonObject(eem, attrJsonValue.isObject(), true);
    logger.trace("   looking for " + key);
    Y value = eem.find(key, Collections.<String, Object>emptyMap());
    attr.set(targetEntity, value);
}

From source file:org.jbpm.formapi.client.form.FormRepresentationDecoderClient.java

License:Apache License

private Object fromJsonValue(JSONValue elem) {
    if (elem.isString() != null) {
        return elem.isString().stringValue();
    } else if (elem.isNumber() != null) {
        return elem.isNumber().doubleValue();
    } else if (elem.isArray() != null) {
        return asList(elem.isArray());
    } else if (elem.isNull() != null) {
        return null;
    } else if (elem.isObject() != null) {
        return asMap(elem.isObject());
    } else {//  w w w  .  j a va2 s  . c  o m
        return "";
    }
}

From source file:org.jbpm.formbuilder.client.JsonLoadInput.java

License:Apache License

private static Object asActualValue(JSONValue value) {
    if (value.isArray() != null) {
        JSONArray arr = value.isArray();
        List<Object> retval = new ArrayList<Object>();
        for (int index = 0; index < arr.size(); index++) {
            JSONValue subValue = arr.get(index);
            retval.add(asActualValue(subValue));
        }/*from   w  w w.ja v  a2s  .  co  m*/
        return retval;
    } else if (value.isBoolean() != null) {
        return String.valueOf(value.isBoolean().booleanValue());
    } else if (value.isNull() != null) {
        return null;
    } else if (value.isNumber() != null) {
        return String.valueOf(value.isNumber().doubleValue());
    } else if (value.isString() != null) {
        return value.isString().stringValue();
    } else if (value.isObject() != null) {
        return toFormData(value.isObject());
    }
    return null;
}

From source file:org.lirazs.gbackbone.client.core.data.Options.java

License:Apache License

public Options(JSONValue jsonObject) {
    JSONObject object = jsonObject.isObject();

    if (object != null) {
        for (String s : object.keySet()) {
            JSONValue jsonValue = object.get(s);
            Object value = jsonValue;

            JSONNumber number = jsonValue.isNumber();
            if (number != null) {
                if (number.toString().contains(".")) {
                    value = number.doubleValue();
                } else {
                    value = (int) number.doubleValue();
                }//  ww w.  j  a v  a 2  s .com
            }

            JSONBoolean jsonBoolean = jsonValue.isBoolean();
            if (jsonBoolean != null)
                value = jsonBoolean.booleanValue();

            JSONNull jsonNull = jsonValue.isNull();
            if (jsonNull != null)
                value = null;

            JSONString jsonString = jsonValue.isString();
            if (jsonString != null)
                value = jsonString.stringValue();

            put(s, value);
        }
    }
}

From source file:org.openremote.modeler.client.gxtextends.NestedJsonLoadResultReader.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override/*from  w  w w  .  j a v  a2 s.c o  m*/
public D read(Object loadConfig, Object data) {
    JSONObject jsonRoot = null;
    if (data instanceof JavaScriptObject) {
        jsonRoot = new JSONObject((JavaScriptObject) data);
    } else {
        jsonRoot = (JSONObject) JSONParser.parse((String) data);
    }

    // You can specify root using dot separate. eg, vendors.vendor 
    String[] roots = myModelType.getRoot().split("\\.");
    JSONValue rootValue = null;
    JSONArray root = null;
    for (int i = 0; i < roots.length; i++) {
        rootValue = jsonRoot.get(roots[i]);
        if (i == roots.length - 1) {
            if (rootValue instanceof JSONObject) {
                root = new JSONArray();
                root.set(0, rootValue);
            } else {
                root = (JSONArray) rootValue;
            }
        } else {
            jsonRoot = (JSONObject) jsonRoot.get(roots[i]);
        }
    }

    int size = root.size();
    ArrayList<ModelData> models = new ArrayList<ModelData>();
    for (int i = 0; i < size; i++) {
        JSONObject obj = (JSONObject) root.get(i);
        ModelData model = newModelInstance();
        for (int j = 0; j < myModelType.getFieldCount(); j++) {
            DataField field = myModelType.getField(j);
            String name = field.getName();
            Class type = field.getType();
            String map = field.getMap() != null ? field.getMap() : field.getName();
            JSONValue value = obj.get(map);

            if (value == null) {
                continue;
            }
            if (value.isArray() != null) {
                // nothing
            } else if (value.isBoolean() != null) {
                model.set(name, value.isBoolean().booleanValue());
            } else if (value.isNumber() != null) {
                if (type != null) {
                    Double d = value.isNumber().doubleValue();
                    if (type.equals(Integer.class)) {
                        model.set(name, d.intValue());
                    } else if (type.equals(Long.class)) {
                        model.set(name, d.longValue());
                    } else if (type.equals(Float.class)) {
                        model.set(name, d.floatValue());
                    } else {
                        model.set(name, d);
                    }
                } else {
                    // convert no type number to string.
                    model.set(name, value.isNumber().toString());
                }
            } else if (value.isObject() != null) {
                // nothing
            } else if (value.isString() != null) {
                String s = value.isString().stringValue();
                if (type != null) {
                    if (type.equals(Date.class)) {
                        if (field.getFormat().equals("timestamp")) {
                            Date d = new Date(Long.parseLong(s) * 1000);
                            model.set(name, d);
                        } else {
                            DateTimeFormat format = DateTimeFormat.getFormat(field.getFormat());
                            Date d = format.parse(s);
                            model.set(name, d);
                        }
                    }
                } else {
                    model.set(name, s);
                }
            } else if (value.isNull() != null) {
                model.set(name, null);
            }
        }
        models.add(model);
    }
    int totalCount = models.size();
    if (myModelType.getTotalName() != null) {
        totalCount = getTotalCount(jsonRoot);
    }
    return (D) createReturnData(loadConfig, models, totalCount);
}

From source file:org.sonatype.nexus.gwt.ui.client.table.JSONArrayTableModel.java

License:Open Source License

public Object getCell(int rowIndex, int colIndex) {
    JSONObject obj = (JSONObject) getRow(rowIndex);

    JSONValue val = JSONUtil.getValue(obj, props[colIndex]);

    if (val != null) {
        if (val.isString() != null) {
            return val.isString().stringValue();
        } else if (val.isBoolean() != null) {
            return Boolean.valueOf(val.isBoolean().booleanValue());
        } else if (val.isNumber() != null) {
            return new Double(val.isNumber().doubleValue());
        } else if (val.isNull() != null) {
            return null;
        } else {//from  w w  w .j  a va 2s .  co m
            return val;
        }
    }

    return null;
}

From source file:rocket.remoting.client.support.rpc.JsonServiceMethodInvoker.java

License:Apache License

/**
 * Takes the response and converts the json payload to a java instance using
 * {@link #deserializeJsonPayload(String)}
 * //from w  w  w .  j ava2  s.  co m
 * @param request
 *            The request
 * @param response
 *            The response
 */
protected void onSuccessfulResponse(final Request request, final Response response) {
    final AsyncCallback<R> callback = this.getCallback();
    R object = null;
    boolean skipOnFailure = false;

    try {
        final String text = response.getText();
        final JSONValue jsonValue = JSONParser.parse(text);
        if (false == jsonValue.isNull() instanceof JSONNull) {
            object = this.readObject(jsonValue);
        }
        // invoke success! after deserializing...
        skipOnFailure = true;
        callback.onSuccess(object);

    } catch (final Throwable caught) {
        if (false == skipOnFailure) {
            // invoke failure if anything went wrong.
            callback.onFailure(caught);
        }
    }
}