我想在每个更新时间将一个对象添加到nested字段中。

例如,我有一个文档:

{
    "test":[{"remark":"remark1"}]
}

下次,我想在测试字段中添加一个remark对象并保存旧的remark对象。结果是:
{
    "test":[{"remark":"remark1"},{"remark":"remark2"}]
}

如何实现?

编辑
我使用脚本:
{
    "script": "ctx._source.test= ((ctx._source.test?: []) += remarkItem)",
    "params": {
        "remarkItem": {
            "remark": "addd"
        }
    }
}

但是,我得到了异常(exception):
{
"error": {
    "root_cause": [
        {
            "type": "remote_transport_exception",
            "reason": "[es77][10.14.84.77:9300][indices:data/write/update[s]]"
        }
    ],
    "type": "illegal_argument_exception",
    "reason": "failed to execute script",
    "caused_by": {
        "type": "script_exception",
        "reason": "Failed to compile inline script [ctx._source.test= ((ctx._source.test?: []) += remarkItem)] using lang [groovy]",
        "caused_by": {
            "type": "script_exception",
            "reason": "failed to compile groovy script",
            "caused_by": {
                "type": "multiple_compilation_errors_exception",
                "reason": "startup failed:\na8220b2cf14b8b7ebeead7f068416882d04fa25d: 1: \nclass org.codehaus.groovy.ast.expr.ElvisOperatorExpression, with its value '(ctx._source.test) ? ctx._source.test: []', is a bad expression as the left hand side of an assignment operator at line: 1 column: 82. File: a8220b2cf14b8b7ebeead7f068416882d04fa25d @ line 1, column 82.\n   CILastCallResultRemark ?: []) += remarkI\n                                 ^\n\n1 error\n"
            }
        }
    }
},
"status": 400
}

编辑

现在,我想添加一个字段以确保更新或插入对象。
例如:
{
    "test":[{"remark":"remark1","id":"1"}]
}

当我更新字段时,当id存在时,我将更新对象。相反,我将插入对象。

最佳答案

我建议尝试这样的脚本,该脚本在参数中带有两个参数。它将检查任何嵌套对象是否已经包含给定的id:

  • 如果是,它将更新给定的remark
  • 如果没有,它将在test数组中插入一个新的嵌套对象。

  • 脚本如下所示:
    def updated = false
    ctx._source.test?.each { obj ->
        if (obj.id == item.id) {
            obj.remark = item.remark
            updated = true
        }
    }
    if (!updated) {
        ctx._source.test = ((ctx._source.test ?: []) + item)
    }
    

    内联并使用适当的分号后,脚本如下所示:
    {
        "script": "def updated = false; ctx._source.test?.each { obj -> if (obj.id == item.id) { obj.remark = item.remark; updated = true } }; if (!updated) { ctx._source.test = ((ctx._source.test ?: []) + item)}",
        "params": {
            "item": {
                "remark": "addd",
                "id": "1"
            }
        }
    }
    

    关于elasticsearch - elasticsearch:使用脚本更新嵌套字段?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/36589963/

    10-17 03:14