com.twitter.summingbird.scalding.MockMappable.scala Maven / Gradle / Ivy

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/*
 Copyright 2013 Twitter, Inc.

 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 com.twitter.summingbird.scalding

import com.twitter.scalding.{ Source => ScaldingSource, Test => TestMode, _ }

import cascading.tuple.{ Tuple, Fields, TupleEntry }
import cascading.tap.Tap
import cascading.scheme.NullScheme
import org.apache.hadoop.mapred.JobConf
import org.apache.hadoop.mapred.RecordReader
import org.apache.hadoop.mapred.OutputCollector

class MockMappable[T](val id: String)(implicit tconv: TupleConverter[T])
    extends ScaldingSource with Mappable[T] {
  def converter[U >: T] = TupleConverter.asSuperConverter(tconv)
  override def toString = id
  override def equals(that: Any) = that match {
    case m: MockMappable[_] => m.id == id
    case _ => false
  }
  override def hashCode = id.hashCode

  override def createTap(readOrWrite: AccessMode)(implicit mode: Mode): Tap[_, _, _] =
    TestTapFactory(this, new NullScheme[JobConf, RecordReader[_, _], OutputCollector[_, _], T, T](Fields.ALL, Fields.ALL)).createTap(readOrWrite)
}