[英]how to write elasticsearch script_score in java api
我在ElasticSearch中找到了一个像
GET /_search
{
"function_score": {
"functions": [
{ ...location clause... },
{ ...price clause... },
{
"script_score": {
"params": {
"threshold": 80,
"discount": 0.1,
"target": 10
},
"script": "price = doc['price'].value; margin = doc['margin'].value;
if (price < threshold) { return price * margin / target };
return price * (1 - discount) * margin / target;"
}
}
]
}
}
ScoreFunctionBuilder
来实现“位置计算”和“价格计算”,但是我不知道如何通过Java API编写"script_score"
和"script"
ScriptScoreFunctionBuilder. scriptFunction(String script, Map<String, Object> params)
这样的API ScriptScoreFunctionBuilder. scriptFunction(String script, Map<String, Object> params)
ScriptScoreFunctionBuilder. scriptFunction(String script, Map<String, Object> params)
我该怎么办?Thx :) 例如:
Map<String, Object> params = new HashMap<>();
params.put("num1", 10);
params.put("num2", 4);
String inlineScript = "doc['score'].value * num1 * num2";
Script script = new Script(script, ScriptType.INLINE, "groovy", params);
ScriptScoreFunctionBuilder scriptBuilder = ScoreFunctionBuilders.scriptFunction(ss);
就这样
这是如何在Java中实现scrip_ score函数
Map<String, Object> params = new HashMap<>();
params.put("paramName1", "paramVal1")
params.put("paramName2", "paramVal2");
String script = "price = doc['price'].value; margin = doc['margin'].value;
if (price < threshold) { return price * margin / target };
return price * (1 - discount) * margin / target;"
XContentBuilder builder =
new ScriptScoreFunctionBuilder()
.script(script)
.lang("groovy")
.params(params)
.toXContent(XContentBuilder, params);
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