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quasar.fs

QueryFile

Related Docs: class QueryFile | package fs

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object QueryFile

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Type Members

  1. final case class Close(h: ResultHandle) extends QueryFile[slamdata.Predef.Unit] with Product with Serializable

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    Used to halt streaming of a result set initiated using the EvaluatePlan operation.

  2. final case class EvaluatePlan(lp: Fix[LogicalPlan]) extends QueryFile[(PhaseResults, \/[FileSystemError, ResultHandle])] with Product with Serializable

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    The result of the query is immediately streamed back to the client.

    The result of the query is immediately streamed back to the client. This operation begins the streaming, in order to continue the streaming, the client must make use of the More operation and finally the Close operation in order to halt the streaming. The LogicalPlan is expected to only contain absolute paths even though that is unfortunately not expressed in the types currently.

  3. final case class ExecutePlan(lp: Fix[LogicalPlan], out: AFile) extends QueryFile[(PhaseResults, \/[FileSystemError, slamdata.Predef.Unit])] with Product with Serializable

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    The result of the query is stored in an output file, overwriting any existing contents, instead of being returned to the user immediately.

    The result of the query is stored in an output file, overwriting any existing contents, instead of being returned to the user immediately.

    The LogicalPlan is expected to only contain absolute paths even though that is unfortunately not expressed in the types currently.

  4. final case class Explain(lp: Fix[LogicalPlan]) extends QueryFile[(PhaseResults, \/[FileSystemError, ExecutionPlan])] with Product with Serializable

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    Represents an "explain plan" operation.

    Represents an "explain plan" operation. This operation should not actually have any side effect on the filesystem, it should simply return useful information to the user about how a given query would be evaluated on this filesystem implementation. The quasar.LogicalPlan is expected to only contain absolute paths even though that is unfortunately not expressed in the types currently.

  5. final case class FileExists(file: AFile) extends QueryFile[slamdata.Predef.Boolean] with Product with Serializable

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    This operation should return whether a file exists in the filesystem.

  6. final case class ListContents(dir: ADir) extends QueryFile[\/[FileSystemError, slamdata.Predef.Set[Node]]] with Product with Serializable

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    This operation lists the names of all the immediate children of the supplied directory in the filesystem.

  7. final case class More(h: ResultHandle) extends QueryFile[\/[FileSystemError, slamdata.Predef.Vector[Data]]] with Product with Serializable

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    Used to continue streaming after initiating a streaming result with the EvaluatePlan operation.

  8. final class Ops[S[_]] extends LiftedOps[QueryFile, S]

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  9. final case class ResultHandle(run: slamdata.Predef.Long) extends AnyVal with Product with Serializable

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  10. class Transforms[F[_]] extends AnyRef

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  11. final class Unsafe[S[_]] extends LiftedOps[QueryFile, S]

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    Low-level, unsafe operations.

    Low-level, unsafe operations. Clients are responsible for resource-safety when using these.

Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. object Ops

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  5. object ResultHandle extends Serializable

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  6. object Transforms

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  7. object Unsafe

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  8. final def asInstanceOf[T0]: T0

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  9. def clone(): AnyRef

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  10. final def eq(arg0: AnyRef): Boolean

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  11. def equals(arg0: Any): Boolean

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  12. def finalize(): Unit

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  13. final def getClass(): Class[_]

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  14. def hashCode(): Int

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  15. final def isInstanceOf[T0]: Boolean

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  16. final def ne(arg0: AnyRef): Boolean

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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  19. implicit def renderTree[A]: RenderTree[QueryFile[A]]

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  20. final def synchronized[T0](arg0: ⇒ T0): T0

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  21. def toString(): String

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  22. final def wait(): Unit

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  23. final def wait(arg0: Long, arg1: Int): Unit

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  24. final def wait(arg0: Long): Unit

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