geotrellis.engine.StepOutput.scala Maven / Gradle / Ivy

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GeoTrellis is an open source geographic data processing engine for high performance applications.

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/*
 * Copyright (c) 2014 Azavea.
 *
 * 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 geotrellis.engine

/**
 * When run, Operations will return a StepOutput. This will either indicate a
 * complete result (Result), an error (StepError), or indicate that it
 * needs other work performed asynchronously before it can continue.
 */
sealed trait StepOutput[+T]

@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10") case class Result[+T](value: T) extends StepOutput[T]
@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10") case class StepError(msg: String, trace: String) extends StepOutput[Nothing]
@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10") case class StepRequiresAsync[+T](args: Args, cb: Args => StepOutput[T]) extends StepOutput[T]
@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10") case class AndThen[+T](op: Operation[T]) extends StepOutput[T]
@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10") case class LayerResult[+T](loadFunc: LayerLoader => T) extends StepOutput[T]

@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10")
object StepError {
  def fromException(e: Throwable) = {
    val msg = e.getMessage
    val trace = e.getStackTrace.map(_.toString).mkString("\n")
    StepError(msg, trace)
  }
}