select.StreamQuery.scala Maven / Gradle / Ivy
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/*
* Copyright 2021 Kári Magnússon
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kuzminki.select
import zio._
class StreamQuery[T](pages: Pages[T]) {
private val toChunk: Option[List[T]] => Option[(Chunk[T], StreamQuery[T])] = { opt =>
opt.map(batch => (Chunk.fromIterable(batch), this))
}
def next = pages.nextOpt.map(toChunk)
}