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• 0.3.1
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• CachedSpanConstraintsFactory.scala

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epic.constraints.CachedSpanConstraintsFactory.scala Maven / Gradle / Ivy

package epic.constraints

import epic.util.CacheBroker

/**
 * A cached version of [[epic.constraints.SpanConstraints.Factory]].
 * Uses the [[epic.util.CacheBroker]] infrastructure
 *
 * @author dlwh
 */
@SerialVersionUID(1L)
class CachedSpanConstraintsFactory[W](factory: SpanConstraints.Factory[W], name: String)(implicit broker: CacheBroker) extends SpanConstraints.Factory[W] {
   private val cache = broker.make[IndexedSeq[W], SpanConstraints](name)
   def constraints(w: IndexedSeq[W]): SpanConstraints = {
     cache.getOrElseUpdate(w, factory.constraints(w))
   }
 }