本文整理了Java中org.activityinfo.json.Json.createNull()方法的一些代码示例，展示了Json.createNull()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Json.createNull()方法的具体详情如下：
包路径：org.activityinfo.json.Json
类名称：Json
方法名：createNull

Json.createNull介绍

暂无

代码示例

代码示例来源：origin: bedatadriven/activityinfo

@Override
  public JsonValue toJson() {
    return Json.createNull();
  }
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  return Json.createNull();
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  return Json.createNull();
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  if(Double.isNaN(value)) {
    return Json.createNull();
  } else {
    return Json.create(value);
  }
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  if(references.size() == 0) {
    return Json.createNull();
  } else if(references.size() == 1) {
    return references.iterator().next().toJsonElement();
  } else {
    JsonValue array = Json.createArray();
    for (RecordRef reference : references) {
      array.add(reference.toJsonElement());
    }
    return array;
  }
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  if(valueIds.isEmpty()) {
    return Json.createNull();
  } else if(valueIds.size() == 1) {
    return Json.create(valueIds.iterator().next().asString());
  } else {
    JsonValue array = Json.createArray();
    for (ResourceId valueId : valueIds) {
      array.add(Json.create(valueId.asString()));
    }
    return array;
  }
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  JsonValue object = Json.createObject();
  object.put("operation", operation.name());
  object.put("permitted", permitted);
  object.add("filter", filter.isPresent() ? Json.create(filter.get()) : Json.createNull());
  return object;
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue getParametersAsJson() {
  JsonValue object = createObject();
  object.put("formId", classId == null ? Json.createNull(): Json.create(classId.asString()));
  return object;
}

代码示例来源：origin: bedatadriven/activityinfo

public void testSerializeNull() throws Exception {
 JsonValue null1 = Json.createNull();
 JsonValue null2 = Json.createNull();
 JsonValue out = serializeDeserialize(null1);
 assertJsonEquals(null1, out);
 assertSame(null1, out);
 assertSame(null2, out);
 assertSame(Json.createNull(), out);
}

代码示例来源：origin: bedatadriven/activityinfo

@Override
public JsonValue toJson() {
  JsonValue opArray = Json.createArray();
  for (Map.Entry<Operation, Optional<String>> op : operations.entrySet()) {
    JsonValue opObject = Json.createObject();
    opObject.add("operation", Json.create(op.getKey().name()));
    opObject.add("filter", op.getValue().isPresent() ? Json.create(op.getValue().get()) : Json.createNull());
    opArray.add(opObject);
  }
  JsonValue object = Json.createObject();
  object.put("resourceId", resourceId.asString());
  object.put("operations", opArray);
  return object;
}

代码示例来源：origin: bedatadriven/activityinfo

public static JsonValue fromPropertyValue(Object propertyValue) {
    if(propertyValue == null) {
      return Json.createNull();
      
    } else if(propertyValue instanceof EmbeddedEntity) {
      return fromEmbeddedEntity(((EmbeddedEntity) propertyValue));
      
    } else if(propertyValue instanceof List) {
      List<Object> propertyValueList = (List<Object>) propertyValue;
      JsonValue convertedList = Json.createArray();
      for (Object propertyValueListItem : propertyValueList) {
        convertedList.add(fromPropertyValue(propertyValueListItem));
      }
      return convertedList;
      
    } else if(propertyValue instanceof String) {
      return Json.create((String)propertyValue);
    
    } else if(propertyValue instanceof Number) {
      return Json.create(((Number) propertyValue).doubleValue());
    
    } else if(propertyValue instanceof Boolean) {
      return Json.create((Boolean) propertyValue);
    
    } else {
      throw new UnsupportedOperationException("type: " + propertyValue.getClass().getName());
    }
  }
}

代码示例来源：origin: bedatadriven/activityinfo

private NewFormRecordBuilder buildUpdate(TypedFormRecord instance) {
  NewFormRecordBuilder update = new NewFormRecordBuilder();
  update.setId(instance.getId().asString());
  update.setParentRecordId(instance.getParentRecordId().asString());
  for (Map.Entry<ResourceId, FieldValue> entry : instance.getFieldValueMap().entrySet()) {
    String field = entry.getKey().asString();
    if(!field.equals("classId")) {
      if(entry.getValue() == null) {
        update.setFieldValue(field, Json.createNull());
      } else if(isSaveable(entry.getValue())){
        update.setFieldValue(field, entry.getValue().toJson());
      }
    }
  }
  return update;
}

代码示例来源：origin: bedatadriven/activityinfo

Optional<FormRecord> record = form.get().get(ref.getRecordId());
if (record.isPresent()) {
  JsonValue labelValue = Json.createNull();

代码示例来源：origin: bedatadriven/activityinfo

@JsOverlay
public void setFieldValue(ResourceId fieldId, FieldValue value) {
  if(value == null) {
    setFieldValue(fieldId.asString(), Json.createNull());
  } else {
    setFieldValue(fieldId.asString(), value.toJson());
  }
}

代码示例来源：origin: bedatadriven/activityinfo

public RecordUpdate buildUpdate(Optional<RecordRef> parentRef) {
  RecordUpdate update = new RecordUpdate();
  update.setRecordId(inputModel.getRecordRef().getRecordId());
  update.setFormId(inputModel.getRecordRef().getFormId());
  if(parentRef.isPresent()) {
    update.setParentRecordId(parentRef.get().getRecordId().asString());
  }
  for (FormTree.Node node : formTree.getRootFields()) {
    FieldInput newInput = inputModel.get(node.getFieldId());
    if(newInput.getState() == FieldInput.State.VALID) {
      update.setFieldValue(node.getFieldId(), newInput.getValue());
    } else if(existingValues.containsKey(node.getFieldId()) &&
        newInput.getState() == FieldInput.State.EMPTY) {
      update.setFieldValue(node.getFieldId().asString(), Json.createNull());
    } else if(existingValues.containsKey(node.getFieldId()) &&
        !relevant.contains(node.getFieldId())) {
      update.setFieldValue(node.getFieldId().asString(), Json.createNull());
    }
  }
  return update;
}

代码示例来源：origin: bedatadriven/activityinfo

@Test
public void updateSiteSetValueToBlank() throws JsonMappingException {
  RecordUpdate changeObject = new RecordUpdate();
  changeObject.setRecordId("s0000000001");
  changeObject.setFormId(activityFormClass(1).asString());
  changeObject.setFieldValue("BENE", Json.createNull());
  changeObject.setFieldValue("comments", Json.createNull());
  Updater updater = updater();
  updater.executeChange(changeObject);
  query(activityFormClass(1), "_id", "BENE", "comments");
  assertThat(column("_id"), hasValues("s0000000001", "s0000000002", "s0000000003"));
  assertThat(column("BENE"), hasValues(null, 3600, 10000));
  assertThat(column("comments"), hasValues((String)null, null, null));
}

代码示例来源：origin: bedatadriven/activityinfo

public void testObjectNullValues() {
 JsonValue object = Json.createObject();
 object.put("a", (String)null);
 object.put("b", Json.createNull());
 assertTrue(object.get("a").isJsonNull());
 assertTrue(object.get("b").isJsonNull());
 assertTrue(object.get("c").isJsonNull());
}

代码示例来源：origin: bedatadriven/activityinfo

@Test
public void missingValue() throws JsonMappingException {
  ResourceId fieldId = ResourceId.valueOf("Q1");
  FormClass formClass = new FormClass(ResourceId.valueOf("XYZ123"));
  formClass.addElement(new FormField(fieldId).setType(new QuantityType("meters")));
  JsonValue fields = createObject();
  fields.put("Q1", Json.createNull());
  JsonValue change = createObject();
  change.put("recordId", "A");
  change.put("formId", "XYZ123");
  change.put("fields", fields);
  TypedRecordUpdate update = Updater.parseChange(formClass, change, userId);
  assertTrue(update.getChangedFieldValues().containsKey(fieldId));
}

代码示例来源：origin: bedatadriven/activityinfo

public void testSerializeObject() throws Exception {
 JsonValue foo = Json.createObject();
 foo.put("true", true);
 foo.put("string", "string");
 foo.put("number", 1.25);
 JsonValue subObject = Json.createObject();
 subObject.put("false", false);
 subObject.put("string2", "string2");
 subObject.put("number", -151);
 JsonValue subArray = Json.createArray();
 subArray.set(0, true);
 subArray.set(1, 1);
 subArray.set(2, "2");
 foo.put("object", subObject);
 foo.put("array", subArray);
 foo.put("null", Json.createNull());
 assertJsonEqualsAfterSerialization(foo);
}

代码示例来源：origin: bedatadriven/activityinfo

fieldValues.put(serialNumField.getName(), Json.createNull());