Question

我正在尝试定义一个＆＃34; null_value＆＃34;对于＆＃34;文本＆＃34;领域（第5.1.1节）。像这样：

getActivity().getSupportActionBar();

这会导致错误：

PUT students
{
  "mappings": {
    "student": {
      "properties": {
        "first_name": {
          "type": "text",
          "null_value": "No First Name"
        }
      }
    }
  }
}

但是如果＆＃34; first_name＆＃34;标记为{ "error": { "root_cause": [ { "type": "mapper_parsing_exception", "reason": "Mapping definition for [first_name] has unsupported parameters: [null_value : No First Name]" } ], "type": "mapper_parsing_exception", "reason": "Failed to parse mapping [student]: Mapping definition for [first_name] has unsupported parameters: [null_value : No First Name]", "caused_by": { "type": "mapper_parsing_exception", "reason": "Mapping definition for [first_name] has unsupported parameters: [null_value : No First Name]" } }, "status": 400 }，成功。看documentation，它并没有说明＆＃34; null_value＆＃34;仅适用于＆＃34;关键字＆＃34;键入的字段。我在这里错过了什么吗？

Answer 1

null_value数据类型中不允许

text。查看表，了解text数据类型的允许参数。 https://www.elastic.co/guide/en/elasticsearch/reference/5.1/text.html#text-params

＆＃34; null_value＆＃34;不允许＆＃34;文字＆＃34;领域？

1 个答案: