Elasticsearch脚本字段。动态参数选择
我正在尝试根据文档中的值创建动态参数。
我到目前为止在这里尝试过
body: { "script_fields": {
"potentialIncome": {
"script": {
"lang": "painless",
"source": "doc.rentPrice.value - params['doc.buyingPrice.value']",
"params": {
120000: 1200,
150000: 1500
}
}
}
}
}
这引发了以下错误:
type: 'script_exception', reason: 'runtime error',
script_stack:
[ 'doc.rentPrice.value - params[\'doc.buyingPrice.value\']',
' ^---- HERE' ],
script: 'doc.rentPrice.value - params[\'doc.buyingPrice.value\']',
lang: 'painless'
我想使参数动态化,以便doc值buyingPrice
确定要扣除的值。
使用ElasticSearch 7.2
一个复杂而糟糕的方法是使用以下脚本
if(doc['buyingPrice'].value==120000){return doc['rentPrice'].value-params['120000']}else if(doc['buyingPrice'].value==150000){return doc['rentPrice'].value-params['150000']}
Es对象:
{ "took": 2,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.0,
"hits": [{
"_index": "immo",
"_type": "objects",
"_id": "1",
"_score": 1.0,
"_source": {
"buyingPrice": 120000,
"rentPrice": 500
}
}, {
"_index": "immo",
"_type": "objects",
"_id": "2",
"_score": 1.0,
"_source": {
"buyingPrice": 150000,
"rentPrice": 500
}
}]
}
}
回答:
您需要尝试不使用单引号。
"source": "return (params[String.valueOf(doc.buyingPrice.value)] != null) ? doc.rentPrice.value - params[String.valueOf(doc.buyingPrice.value)] : 0", ^ ^
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