Example usage for com.google.gson JsonElement isJsonNull

List of usage examples for com.google.gson JsonElement isJsonNull

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Introduction

In this page you can find the example usage for com.google.gson JsonElement isJsonNull.

Prototype

public boolean isJsonNull()

Source Link

Document

provides check for verifying if this element represents a null value or not.

Usage

From source file:com.continuuity.weave.internal.json.LocalFileCodec.java

License:Open Source License

@Override
public LocalFile deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
        throws JsonParseException {
    JsonObject jsonObj = json.getAsJsonObject();

    String name = jsonObj.get("name").getAsString();
    URI uri = URI.create(jsonObj.get("uri").getAsString());
    long lastModified = jsonObj.get("lastModified").getAsLong();
    long size = jsonObj.get("size").getAsLong();
    boolean archive = jsonObj.get("archive").getAsBoolean();
    JsonElement pattern = jsonObj.get("pattern");

    return new DefaultLocalFile(name, uri, lastModified, size, archive,
            (pattern == null || pattern.isJsonNull()) ? null : pattern.getAsString());
}

From source file:com.crypticbit.diff.demo.swing.contacts.JsonJTreeNode.java

License:Apache License

/**
 * @param fieldName//from  www  . j  av  a  2  s .  c  o m
 *            - name of field if applicable or null
 * @param index
 *            - index of element in the array or -1 if not part of an array
 * @param jsonElement
 *            - element to represent
 */
public JsonJTreeNode(String fieldName, int index, JsonElement jsonElement) {
    this.index = index;
    this.fieldName = fieldName;
    if (jsonElement.isJsonArray()) {
        this.dataType = DataType.ARRAY;
        this.value = jsonElement.toString();
        populateChildren(jsonElement);
    } else if (jsonElement.isJsonObject()) {
        this.dataType = DataType.OBJECT;
        this.value = jsonElement.toString();
        populateChildren(jsonElement);
    } else if (jsonElement.isJsonPrimitive()) {
        this.dataType = DataType.VALUE;
        this.value = jsonElement.toString();
    } else if (jsonElement.isJsonNull()) {
        this.dataType = DataType.VALUE;
        this.value = jsonElement.toString();
    } else {
        throw new IllegalArgumentException("jsonElement is an unknown element type.");
    }

}

From source file:com.crypticbit.diff.demo.swing.JSONJTreeNode.java

License:Apache License

/**
 * @param fieldName/*from   w  w w  .  j  a va 2  s .  com*/
 *            - name of field if applicable or null
 * @param index
 *            - index of element in the array or -1 if not part of an array
 * @param jsonElement
 *            - element to represent
 */
public JSONJTreeNode(String fieldName, int index, JsonElement jsonElement) {
    this.index = index;
    this.fieldName = fieldName;
    if (jsonElement.isJsonArray()) {
        this.dataType = DataType.ARRAY;
        this.value = jsonElement.toString();
        populateChildren(jsonElement);
    } else if (jsonElement.isJsonObject()) {
        this.dataType = DataType.OBJECT;
        this.value = jsonElement.toString();
        populateChildren(jsonElement);
    } else if (jsonElement.isJsonPrimitive()) {
        this.dataType = DataType.VALUE;
        this.value = jsonElement.toString();
    } else if (jsonElement.isJsonNull()) {
        this.dataType = DataType.VALUE;
        this.value = jsonElement.toString();
    } else {
        throw new IllegalArgumentException("jsonElement is an unknown element type.");
    }

}

From source file:com.cybozu.kintone.database.JsonParser.java

License:Apache License

/**
 * Reads and parses each field element.//from  w w  w .j  av a 2  s . co  m
 * @param fieldName
 *            the field name
 * @param elem
 *            a json element represents a record object
 * @return the field object created
 * @throws IOException
 */
private Field readField(String fieldName, JsonElement fieldElem) throws IOException {

    Field field = null;

    if (!fieldElem.isJsonObject())
        return null;
    JsonObject obj = fieldElem.getAsJsonObject();

    FieldType type = FieldType.getEnum(obj.get("type").getAsString());
    JsonElement element = obj.get("value");

    Object object = null;
    String strVal = null;
    if (type == null || element == null)
        return null;

    if (!element.isJsonNull()) {
        switch (type) {
        case SINGLE_LINE_TEXT:
        case CALC:
        case MULTI_LINE_TEXT:
        case RICH_TEXT:
        case RADIO_BUTTON:
        case DROP_DOWN:
        case LINK:
        case STATUS:
        case RECORD_NUMBER:
        case NUMBER:
            object = element.getAsString();
            break;
        case __ID__:
        case __REVISION__:
            strVal = element.getAsString();
            try {
                object = Long.valueOf(strVal);
            } catch (NumberFormatException e) {
            }
            break;
        case DATE:
        case TIME:
        case DATETIME:
        case CREATED_TIME:
        case UPDATED_TIME:
            object = element.getAsString();
            break;
        case CHECK_BOX:
        case MULTI_SELECT:
        case CATEGORY:
            object = jsonToStringArray(element);
            break;
        case FILE:
            object = jsonToFileArray(element);
            break;
        case CREATOR:
        case MODIFIER:
            if (element.isJsonObject()) {
                Gson gson = new Gson();
                object = gson.fromJson(element, UserDto.class);
            }
            break;
        case USER_SELECT:
        case STATUS_ASSIGNEE:
            object = jsonToUserArray(element);
            break;
        case SUBTABLE:
            object = jsonToSubtable(element);
            break;
        }
    }
    field = new Field(fieldName, type, object);

    return field;
}

From source file:com.diversityarrays.dalclient.DalUtil.java

License:Open Source License

static public DalResponseRecord createFrom(String requestUrl, String tagName, JsonObject input) {
    DalResponseRecord result = new DalResponseRecord(requestUrl, tagName);
    for (Map.Entry<String, JsonElement> entry : input.entrySet()) {
        String key = entry.getKey();
        JsonElement value = entry.getValue();
        if (value == null || value.isJsonNull()) {
            result.rowdata.put(key, "");
        } else if (value.isJsonArray()) {
            JsonArray array = (JsonArray) value;
            int count = 0;
            for (JsonElement elt : array) {
                if (elt != null && elt.isJsonObject()) {
                    JsonObject child = (JsonObject) elt;
                    Map<String, String> childMap = asRowdata(child);
                    if (childMap != null) {
                        result.addNestedData(key, childMap);
                    }/*from   ww w .j  av a  2  s  . c o m*/
                } else {
                    result.warnings.add(String.format("unexpected value-type for '%s'[%d] :%s", //$NON-NLS-1$
                            key, count, elt == null ? "null" : elt.getClass().getName()));
                }
                ++count;
            }
        } else if (value.isJsonPrimitive()) {
            JsonPrimitive prim = (JsonPrimitive) value;
            result.rowdata.put(key, prim.getAsString());
        } else if (value.isJsonObject()) {
            // ?? perhaps
            Map<String, String> childMap = asRowdata((JsonObject) value);
            if (childMap != null) {
                result.addNestedData(key, childMap);
            }
        } else {
            result.warnings.add(String.format("unexpected value-type for '%s' :%s", //$NON-NLS-1$
                    key, value.getClass().getName()));
        }
    }
    return result;
}

From source file:com.diversityarrays.dalclient.DalUtil.java

License:Open Source License

/**
 * Convert the the input into a Map&lt;String,String&gt;.
 * @param input/*from w  w  w .  jav a2  s .  co  m*/
 * @return a Map&lt;String,String&gt;
 */
static private Map<String, String> asRowdata(JsonObject input) {
    Map<String, String> result = null;
    Set<Map.Entry<String, JsonElement>> entrySet = input.entrySet();
    if (entrySet != null && !entrySet.isEmpty()) {
        for (Map.Entry<String, JsonElement> entry : entrySet) {
            if (result == null) {
                result = new LinkedHashMap<>();
            }
            String key = entry.getKey();
            JsonElement value = entry.getValue();
            if (value == null || value.isJsonNull()) {
                result.put(key, "");
            } else {
                result.put(key, value.getAsString());
            }
        }
    }
    return result;
}

From source file:com.edgebox.eacds.net.CDPostResponse.java

License:Open Source License

public static CDPostResponse build(String json) {
    CDPostResponse rt = new CDPostResponse();
    JsonElement e = new JsonParser().parse(json);
    rt.json = e.getAsJsonObject();/*from w  w w. j a  va  2s  . com*/
    rt.success = rt.json.get("success").getAsBoolean();
    rt.message = rt.json.get("message").getAsString();
    rt.errorTrace = rt.json.get("errorTrace").getAsString();

    try {
        rt.data = rt.json.getAsJsonObject("data").getAsJsonObject();
    } catch (java.lang.ClassCastException ex) {
        rt.data = rt.json.get("data").getAsString();
    }

    JsonElement dt = rt.json.get("data");
    if (dt.isJsonNull()) {
        rt.data = null;
    } else if (dt.isJsonObject()) {
        rt.data = dt.getAsJsonObject();
    } else {
        rt.data = dt.getAsJsonPrimitive();
    }
    return rt;
}

From source file:com.facebook.buck.json.RawParser.java

License:Apache License

/**
 * @return One of: String, Boolean, Long, Number, List<Object>, Map<String, Object>.
 *///w  w w  . j  a  v  a 2  s .  c om
@Nullable
@VisibleForTesting
static Object toRawTypes(JsonElement json) {
    // Cases are ordered from most common to least common.
    if (json.isJsonPrimitive()) {
        JsonPrimitive primitive = json.getAsJsonPrimitive();
        if (primitive.isString()) {
            return interner.intern(primitive.getAsString());
        } else if (primitive.isBoolean()) {
            return primitive.getAsBoolean();
        } else if (primitive.isNumber()) {
            Number number = primitive.getAsNumber();
            // Number is likely an instance of class com.google.gson.internal.LazilyParsedNumber.
            if (number.longValue() == number.doubleValue()) {
                return number.longValue();
            } else {
                return number;
            }
        } else {
            throw new IllegalStateException("Unknown primitive type: " + primitive);
        }
    } else if (json.isJsonArray()) {
        JsonArray array = json.getAsJsonArray();
        List<Object> out = Lists.newArrayListWithCapacity(array.size());
        for (JsonElement item : array) {
            out.add(toRawTypes(item));
        }
        return out;
    } else if (json.isJsonObject()) {
        Map<String, Object> out = new LinkedHashMap<>(json.getAsJsonObject().entrySet().size());
        for (Map.Entry<String, JsonElement> entry : json.getAsJsonObject().entrySet()) {
            // On a large project, without invoking intern(), we have seen `buck targets` OOM. When this
            // happened, according to the .hprof file generated using -XX:+HeapDumpOnOutOfMemoryError,
            // 39.6% of the memory was spent on char[] objects while 14.5% was spent on Strings.
            // (Another 10.5% was spent on java.util.HashMap$Entry.) Introducing intern() stopped the
            // OOM from happening.
            out.put(interner.intern(entry.getKey()), toRawTypes(entry.getValue()));
        }
        return out;
    } else if (json.isJsonNull()) {
        return null;
    } else {
        throw new IllegalStateException("Unknown type: " + json);
    }
}

From source file:com.flipkart.android.proteus.builder.DataAndViewParsingLayoutBuilder.java

License:Apache License

@Override
protected ProteusView onUnknownViewEncountered(String type, ViewGroup parent, JsonObject source,
        JsonObject data, int index, Styles styles) {
    JsonElement element = null;
    if (layouts != null) {
        element = layouts.get(type);//from w w  w.ja  va 2 s.  c o m
    }
    if (element != null && !element.isJsonNull()) {
        JsonObject layout = element.getAsJsonObject();
        layout = Utils.mergeLayouts(layout, source);
        ProteusView view = build(parent, layout, data, index, styles);
        onViewBuiltFromViewProvider(view, type, parent, index);
        return view;
    }
    return super.onUnknownViewEncountered(type, parent, source, data, index, styles);
}

From source file:com.flipkart.android.proteus.builder.DataParsingLayoutBuilder.java

License:Apache License

@Override
protected ProteusViewManager createViewManager(LayoutHandler handler, View parent, JsonObject layout,
        JsonObject data, int index, Styles styles) {
    ProteusViewManagerImpl viewManager = new ProteusViewManagerImpl();
    DataContext dataContext, parentDataContext = null;
    JsonElement scope = layout.get(ProteusConstants.DATA_CONTEXT);

    if (parent instanceof ProteusView) {
        parentDataContext = ((ProteusView) parent).getViewManager().getDataContext();
    }//  ww  w. j a v  a2s.c o  m

    if (scope == null || scope.isJsonNull()) {
        if (parentDataContext != null) {
            dataContext = new DataContext(parentDataContext);
        } else {
            dataContext = new DataContext();
            dataContext.setData(data);
            dataContext.setIndex(index);
        }
    } else {
        if (parentDataContext != null) {
            dataContext = parentDataContext.createChildDataContext(scope.getAsJsonObject(), index);
        } else {
            dataContext = new DataContext();
            dataContext.setData(data);
            dataContext = dataContext.createChildDataContext(scope.getAsJsonObject(), index);
        }
    }

    viewManager.setLayout(layout);
    viewManager.setDataContext(dataContext);
    viewManager.setStyles(styles);
    viewManager.setLayoutBuilder(this);
    viewManager.setLayoutHandler(handler);

    return viewManager;
}