Example usage for com.google.gson JsonNull INSTANCE

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In this page you can find the example usage for com.google.gson JsonNull INSTANCE.

Prototype

JsonNull INSTANCE

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singleton for JsonNull

Usage

From source file:com.github.jneat.mybatis.JsonElementTypeHandler.java

License:Open Source License

@Override
public JsonElement getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
    String jsonSource = rs.getString(columnIndex);
    if (jsonSource != null) {
        return fromString(jsonSource);
    }/*from  w  w  w .j a  va 2  s  .  c om*/
    return JsonNull.INSTANCE;
}

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From source file:com.github.jneat.mybatis.JsonElementTypeHandler.java

License:Open Source License

@Override
public JsonElement getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
    String jsonSource = cs.getString(columnIndex);
    if (jsonSource != null) {
        return fromString(jsonSource);
    }/*from  w w w  . j  a  va  2  s  .co  m*/
    return JsonNull.INSTANCE;
}

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From source file:com.github.jsdossier.Config.java

License:Apache License

/**
 * Returns this configuration object as a JSON object.
 *//*  www .  j a  va2  s .  com*/
JsonObject toJson() {
    JsonObject json = new JsonObject();
    json.add("output", new JsonPrimitive(output.toString()));
    json.add("sources", toJsonArray(srcs));
    json.add("modules", toJsonArray(modules));
    json.add("externs", toJsonArray(externs));
    json.add("excludes", toJsonArray(excludes));
    json.add("typeFilters", toJsonArray(typeFilters));
    json.add("stripModulePrefix", new JsonPrimitive(modulePrefix.toString()));
    json.add("readme", readme.isPresent() ? new JsonPrimitive(readme.get().toString()) : JsonNull.INSTANCE);
    json.addProperty("strict", strict);
    json.addProperty("useMarkdown", useMarkdown);
    json.addProperty("language", language.name());

    JsonArray pages = new JsonArray();
    for (Page page : customPages) {
        pages.add(page.toJson());
    }
    json.add("customPages", pages);

    return json;
}

---

From source file:com.gs.reladomo.serial.gson.GsonReladomoSerialWriter.java

License:Apache License

@Override
public void writeNull(GsonRelodomoSerialContext context, String attributeName, Class type) {
    context.getCurrentResultAsObject().add(attributeName, JsonNull.INSTANCE);
}

---

From source file:com.ibm.g11n.pipeline.resfilter.impl.JsonResource.java

License:Open Source License

@Override
public void write(OutputStream outStream, LanguageBundle languageBundle, FilterOptions options)
        throws IOException, ResourceFilterException {
    // extracts key value pairs in original sequence order
    List<ResourceString> resStrings = languageBundle.getSortedResourceStrings();

    JsonObject output = new JsonObject();
    JsonObject top_level;/*from   ww  w.j a v  a  2 s  .co  m*/

    if (this instanceof GlobalizeJsResource) {
        String resLanguageCode = languageBundle.getEmbeddedLanguageCode();
        if (resLanguageCode == null || resLanguageCode.isEmpty()) {
            throw new ResourceFilterException(
                    "Missing resource language code in the specified language bundle.");
        }
        top_level = new JsonObject();
        top_level.add(resLanguageCode, output);
    } else {
        top_level = output;
    }

    for (ResourceString res : resStrings) {
        String key = res.getKey();
        List<KeyPiece> keyPieces = splitKeyPieces(key);
        JsonElement current = output;
        for (int i = 0; i < keyPieces.size(); i++) {
            if (i + 1 < keyPieces.size()) { // There is structure under this
                                            // key piece
                if (current.isJsonObject()) {
                    JsonObject currentObject = current.getAsJsonObject();
                    if (!currentObject.has(keyPieces.get(i).keyValue)) {
                        if (keyPieces.get(i + 1).keyType == JsonToken.BEGIN_ARRAY) {
                            currentObject.add(keyPieces.get(i).keyValue, new JsonArray());
                        } else {
                            currentObject.add(keyPieces.get(i).keyValue, new JsonObject());
                        }
                    }
                    current = currentObject.get(keyPieces.get(i).keyValue);
                } else {
                    JsonArray currentArray = current.getAsJsonArray();
                    Integer idx = Integer.valueOf(keyPieces.get(i).keyValue);
                    for (int arrayIndex = currentArray.size(); arrayIndex <= idx; arrayIndex++) {
                        currentArray.add(JsonNull.INSTANCE);
                    }
                    if (currentArray.get(idx).isJsonNull()) {
                        if (keyPieces.get(i + 1).keyType == JsonToken.BEGIN_ARRAY) {
                            currentArray.set(idx, new JsonArray());
                        } else {
                            currentArray.set(idx, new JsonObject());
                        }
                    }
                    current = currentArray.get(idx);
                }
            } else { // This is the leaf node
                if (keyPieces.get(i).keyType == JsonToken.BEGIN_ARRAY) {
                    JsonArray currentArray = current.getAsJsonArray();
                    Integer idx = Integer.valueOf(keyPieces.get(i).keyValue);
                    JsonPrimitive e = new JsonPrimitive(res.getValue());
                    for (int arrayIndex = currentArray.size(); arrayIndex <= idx; arrayIndex++) {
                        currentArray.add(JsonNull.INSTANCE);
                    }
                    current.getAsJsonArray().set(idx, e);
                } else {
                    current.getAsJsonObject().addProperty(keyPieces.get(i).keyValue, res.getValue());
                }
            }
        }
    }
    try (OutputStreamWriter writer = new OutputStreamWriter(new BufferedOutputStream(outStream),
            StandardCharsets.UTF_8)) {
        new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create().toJson(top_level, writer);
    }
}

---

From source file:com.ibm.streamsx.topology.builder.BOperatorInvocation.java

License:Open Source License

@Override
public JsonObject _complete() {
    final JsonObject json = super._complete();

    if (outputs != null) {
        JsonArray oa = new JsonArray();
        // outputs array in java is in port order.
        for (int i = 0; i < outputs.size(); i++)
            oa.add(JsonNull.INSTANCE); // will be overwritten with port info
        for (BOutputPort output : outputs.values())
            oa.set(output.index(), output._complete());
        json.add("outputs", oa);
    }//from   ww w.j av a  2  s.  c o  m

    if (inputs != null) {
        JsonArray ia = new JsonArray();
        for (int i = 0; i < inputs.size(); i++)
            ia.add(JsonNull.INSTANCE); // will be overwritten with port info
        for (BInputPort input : inputs)
            ia.set(input.index(), input._complete());
        json.add("inputs", ia);
    }

    return json;
}

---

From source file:com.ibm.watson.developer_cloud.util.DateSerializer.java

License:Open Source License

@Override
// DateSerializer.serialize() is NOT thread safe because of the underlying SimpleDateFormats.
public synchronized JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {
    return src == null ? JsonNull.INSTANCE : new JsonPrimitive(utc.format(src));
}

---

From source file:com.impetus.client.couchdb.CouchDBObjectMapper.java

License:Apache License

/**
 * Gets the entity from json.// ww w  . ja va2 s. c om
 * 
 * @param entityClass
 *            the entity class
 * @param m
 *            the m
 * @param jsonObj
 *            the json obj
 * @param relations
 *            the relations
 * @param kunderaMetadata
 *            the kundera metadata
 * @return the entity from json
 */
static Object getEntityFromJson(Class<?> entityClass, EntityMetadata m, JsonObject jsonObj,
        List<String> relations, final KunderaMetadata kunderaMetadata) {// Entity object
    Object entity = null;

    // Map to hold property-name=>foreign-entity relations
    try {
        entity = KunderaCoreUtils.createNewInstance(entityClass);

        // Populate primary key column
        JsonElement rowKey = jsonObj.get(((AbstractAttribute) m.getIdAttribute()).getJPAColumnName());
        if (rowKey == null) {
            return null;
        }
        Class<?> idClass = null;
        MetamodelImpl metaModel = (MetamodelImpl) kunderaMetadata.getApplicationMetadata()
                .getMetamodel(m.getPersistenceUnit());
        Map<String, Object> relationValue = null;
        idClass = m.getIdAttribute().getJavaType();
        if (metaModel.isEmbeddable(m.getIdAttribute().getBindableJavaType())) {
            Class javaType = m.getIdAttribute().getBindableJavaType();
            PropertyAccessorHelper.setId(entity, m, getObjectFromJson(rowKey.getAsJsonObject(), javaType,
                    metaModel.embeddable(javaType).getAttributes()));
        } else {
            PropertyAccessorHelper.setId(entity, m, PropertyAccessorHelper.fromSourceToTargetClass(idClass,
                    String.class, rowKey.getAsString()));
        }

        EntityType entityType = metaModel.entity(entityClass);

        String discriminatorColumn = ((AbstractManagedType) entityType).getDiscriminatorColumn();

        Set<Attribute> columns = entityType.getAttributes();

        for (Attribute column : columns) {
            JsonElement value = jsonObj.get(((AbstractAttribute) column).getJPAColumnName());
            if (!column.equals(m.getIdAttribute())
                    && !((AbstractAttribute) column).getJPAColumnName().equals(discriminatorColumn)
                    && value != null && !value.equals(JsonNull.INSTANCE)) {
                String fieldName = ((AbstractAttribute) column).getJPAColumnName();

                Class javaType = ((AbstractAttribute) column).getBindableJavaType();
                if (metaModel.isEmbeddable(javaType)) {
                    onViaEmbeddable(entityType, column, m, entity, metaModel.embeddable(javaType), jsonObj);
                } else if (!column.isAssociation()) {
                    setFieldValue(entity, column, value);
                } else if (relations != null) {
                    if (relationValue == null) {
                        relationValue = new HashMap<String, Object>();
                    }

                    if (relations.contains(fieldName)
                            && !fieldName.equals(((AbstractAttribute) m.getIdAttribute()).getJPAColumnName())) {
                        JsonElement colValue = jsonObj.get(((AbstractAttribute) column).getJPAColumnName());
                        if (colValue != null) {
                            String colFieldName = m.getFieldName(fieldName);
                            Attribute attribute = entityType.getAttribute(colFieldName);
                            EntityMetadata relationMetadata = KunderaMetadataManager
                                    .getEntityMetadata(kunderaMetadata, attribute.getJavaType());
                            Object colVal = PropertyAccessorHelper.fromSourceToTargetClass(
                                    relationMetadata.getIdAttribute().getJavaType(), String.class,
                                    colValue.getAsString());
                            relationValue.put(fieldName, colVal);
                        }
                    }
                }
            }
        }
        if (relationValue != null && !relationValue.isEmpty()) {
            EnhanceEntity e = new EnhanceEntity(entity, PropertyAccessorHelper.getId(entity, m), relationValue);
            return e;
        } else {
            return entity;
        }
    } catch (Exception e) {
        log.error("Error while extracting entity object from json, caused by {}.", e);
        throw new KunderaException(e);
    }
}

---

From source file:com.lithium.luces.Luces.java

License:Apache License

@Override
public Object getFieldValue(String name, String value) {
    if (typeMap == null && errIfMappingNull) {
        throw new IllegalStateException(
                String.format("Mapping is null, but required. [name = %1$s, value = %2$s]", name, value));
    }/*  w  w w  .  j  a va2 s .  co  m*/
    final ParseType parseType;
    ParseType temp;
    if (typeMap == null || (temp = typeMap.get(name)) == null) {
        log.warn("Field {} has no type association, parsing \"{}\" as a string", name, value);
        parseType = ParseType.STRING;
    } else {
        parseType = temp;
    }
    String fieldValue = value;
    if (null == fieldValue || (useNull && fieldValue.trim().isEmpty())) {
        return JsonNull.INSTANCE;
    }
    Object parsedValue;
    try {
        switch (parseType) {
        case BYTE:
            // FALL THROUGH
        case SHORT:
            // FALL THROUGH
        case INTEGER:
            // FALL THROUGH
        case LONG:
            fieldValue = fieldValue.trim();
            fieldValue = (useDefaults && fieldValue.isEmpty()) ? "0" : fieldValue;
            parsedValue = Long.parseLong(fieldValue);
            break;
        case FLOAT:
            // FALL THROUGH
        case DOUBLE:
            fieldValue = fieldValue.trim();
            fieldValue = (useDefaults && fieldValue.isEmpty()) ? "0.0" : fieldValue;
            parsedValue = Double.parseDouble(fieldValue);
            break;
        case BOOLEAN:
            fieldValue = fieldValue.trim();
            // anything that doesn't match the string "true" ignoring case evaluates to false
            parsedValue = Boolean.parseBoolean(fieldValue);
            break;
        default: // leave as untrimmed string
            parsedValue = fieldValue;
            break;
        }
    } catch (NumberFormatException ex) {
        throw new NumberFormatException("Error parsing " + name + " field: " + ex.getMessage());
    }

    return parsedValue;
}

---

From source file:com.microsoft.windowsazure.mobileservices.table.serialization.LongSerializer.java

License:Open Source License

/**
 * Serializes a Long instance to a JsonElement, verifying the maximum and
 * minimum allowed values//from w  w w.  j ava2s  .c  o m
 */
@Override
public JsonElement serialize(Long element, Type type, JsonSerializationContext ctx) {
    Long maxAllowedValue = 0x0020000000000000L;
    Long minAllowedValue = Long.valueOf(0xFFE0000000000000L);
    if (element != null) {
        if (element > maxAllowedValue || element < minAllowedValue) {
            throw new IllegalArgumentException(
                    "Long value must be between " + minAllowedValue + " and " + maxAllowedValue);
        } else {
            return new JsonPrimitive(element);
        }
    } else {
        return JsonNull.INSTANCE;
    }
}

---

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