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Extension of Scala-STM, adding optional durability layer, and providing API for confluent and reactive event layers

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/*
 *  ConstElemImpl.scala
 *  (Lucre 4)
 *
 *  Copyright (c) 2009-2024 Hanns Holger Rutz. All rights reserved.
 *
 *  This software is published under the GNU Affero General Public License v3+
 *
 *
 *  For further information, please contact Hanns Holger Rutz at
 *  [email protected]
 */

package de.sciss.lucre
package impl

import de.sciss.serial.DataOutput

trait ConstElemImpl[T <: Txn[T]] extends Elem[T] {
  private[lucre] def event(slot: Int): Event[T, Any] = throw new UnsupportedOperationException

  final def write(out: DataOutput): Unit = {
    out.writeInt(tpe.typeId)
    out.writeByte(3)
    writeData(out)
  }

  final def dispose()(implicit tx: T): Unit = ()

  protected def writeData(out: DataOutput): Unit
}