类型不匹配弹性搜索

Question

收到此错误让我知道如何解决此问题。根据链接https://github.com/sksamuel/elastic4s，响应应为SearchResponse。

build sbt如下：

 libraryDependencies += "com.sksamuel.elastic4s" % "elastic4s-core_2.11" % "2.2.0"

代码如下：

def searchItem(q: String): Future[SearchResponse] = {
  val productsIndex = ESConfig.productsIndex
  val rs = client.execute {
    search in productsIndex / "items" query q
  }
  rs
}

错误如下：

[error] /home/shravan/Building_a_Recommendation_Engine_with_scala/src/main/scala/chapter07/ESUtil.scala:58: type mismatch;
[error]  found   : scala.concurrent.Future[com.sksamuel.elastic4s.RichSearchResponse]
[error]  required: scala.concurrent.Future[org.elasticsearch.action.search.SearchResponse]
[error]     rs
[error]     ^

Answer 1

在elatic4s 2.20 中，它构建了一个新模型RichSearchResponse来替换原始的 elasticsearch SearchResponse，以便于在Scala，如果您仍需要获取原始 elasticsearch SearchResponse，您可以这样做：

def searchItem(q: String): Future[RichSearchResponse] = {
  val productsIndex = ESConfig.productsIndex
  val rs = client.execute {
    search in productsIndex / "items" query q
  }
  rs
}
val s: SearchResponse = Await(searchItem("test"), Duration.Inf).original

或

def searchItem(q: String): Future[SearchResponse] = {
  val productsIndex = ESConfig.productsIndex
  val rs = client.execute {
    search in productsIndex / "items" query q
  }
  rs.map(s => s.original)
}