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• FetchSourceContextBuilderFn.scala

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com.sksamuel.elastic4s.handlers.common.FetchSourceContextBuilderFn.scala Maven / Gradle / Ivy

package com.sksamuel.elastic4s.handlers.common

import com.sksamuel.elastic4s.json.XContentBuilder
import com.sksamuel.elastic4s.requests.common.FetchSourceContext

// takes a FetchSourceContext and returns the appropriate json
// https://www.elastic.co/guide/en/elasticsearch/reference/5.6/search-request-source-filtering.html
object FetchSourceContextBuilderFn {
  def apply(builder: XContentBuilder, context: FetchSourceContext) = {
    if (context.fetchSource)
      if (context.includes.nonEmpty || context.excludes.nonEmpty) {
        builder.startObject("_source")
        context.includes.toList match {
          case Nil =>
          case includes => builder.array("includes", includes.toArray)
        }
        context.excludes.toList match {
          case Nil =>
          case excludes => builder.array("excludes", excludes.toArray)
        }
        builder.endObject()
      } else
        builder.field("_source", true)
    else
      builder.field("_source", false)
    builder.value
  }
}