largeobjectmanager

Algebra and free monad for primitive operations over a org.postgresql.largeobject.LargeObjectManager. This is a low-level API that exposes lifecycle-managed JDBC objects directly and is intended mainly for library developers. End users will prefer a safer, higher-level API such as that provided in the doobie.hi package.

LargeObjectManagerIO is a free monad that must be run via an interpreter, most commonly via natural transformation of its underlying algebra LargeObjectManagerOp to another monad via Free#foldMap.

The library provides a natural transformation to Kleisli[M, LargeObjectManager, A] for any exception-trapping (Catchable) and effect-capturing (Capture) monad M. Such evidence is provided for Task, IO, and stdlib Future; and transK[M] is provided as syntax.

// An action to run
val a: LargeObjectManagerIO[Foo] = ...

// A JDBC object
val s: LargeObjectManager = ...

// Unfolding into a Task
val ta: Task[A] = a.transK[Task].run(s)

Source: largeobjectmanager.scala

Linear Supertypes

LargeObjectManagerIOInstances, AnyRef, Any

Type Members

type LargeObjectManagerIO[A] = Free[LargeObjectManagerOp, A]

Free monad over a free functor of LargeObjectManagerOp; abstractly, a computation that consumes a org.postgresql.largeobject.LargeObjectManager and produces a value of type A.
implicit class LargeObjectManagerIOOps[A] extends AnyRef

Syntax for LargeObjectManagerIO.
sealed trait LargeObjectManagerOp[A] extends AnyRef

Sum type of primitive operations over a org.postgresql.largeobject.LargeObjectManager.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
implicit val CaptureLargeObjectManagerIO: Capture[LargeObjectManagerIO]

Capture instance for LargeObjectManagerIO.
implicit val CatchableLargeObjectManagerIO: Catchable[LargeObjectManagerIO]

Catchable instance for LargeObjectManagerIO.
object LargeObjectManagerOp

Module of constructors for LargeObjectManagerOp.
Module of constructors for LargeObjectManagerOp. These are rarely useful outside of the implementation; prefer the smart constructors provided by the largeobjectmanager module.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def attempt[A](a: LargeObjectManagerIO[A]): LargeObjectManagerIO[\/[Throwable, A]]

Lift a LargeObjectManagerIO[A] into an exception-capturing LargeObjectManagerIO[Throwable \/ A].
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def createLO(a: Int): LargeObjectManagerIO[Long]
val createLO: LargeObjectManagerIO[Long]
def delay[A](a: ⇒ A): LargeObjectManagerIO[A]

Non-strict unit for capturing effects.
def delete(a: Long): LargeObjectManagerIO[Unit]
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def kleisliTrans[M[_]](implicit arg0: Monad[M], arg1: Catchable[M], arg2: Capture[M]): ~>[LargeObjectManagerOp, [γ$0$]Kleisli[M, LargeObjectManager, γ$0$]]

Natural transformation from LargeObjectManagerOp to Kleisli for the given M, consuming a org.postgresql.largeobject.LargeObjectManager.
def liftLargeObject[A](s: LargeObject, action: LargeObjectIO[A]): LargeObjectManagerIO[A]
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def open(a: Long): LargeObjectManagerIO[LargeObject]
def open(a: Long, b: Int): LargeObjectManagerIO[LargeObject]
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
def unlink(a: Long): LargeObjectManagerIO[Unit]
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package free

object largeobjectmanager extends LargeObjectManagerIOInstances

Type Members

type LargeObjectManagerIO[A] = Free[LargeObjectManagerOp, A]

implicit class LargeObjectManagerIOOps[A] extends AnyRef

sealed trait LargeObjectManagerOp[A] extends AnyRef

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

implicit val CaptureLargeObjectManagerIO: Capture[LargeObjectManagerIO]

implicit val CatchableLargeObjectManagerIO: Catchable[LargeObjectManagerIO]

object LargeObjectManagerOp

final def asInstanceOf[T0]: T0

def attempt[A](a: LargeObjectManagerIO[A]): LargeObjectManagerIO[\/[Throwable, A]]

def clone(): AnyRef

def createLO(a: Int): LargeObjectManagerIO[Long]

val createLO: LargeObjectManagerIO[Long]

def delay[A](a: ⇒ A): LargeObjectManagerIO[A]

def delete(a: Long): LargeObjectManagerIO[Unit]

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def kleisliTrans[M[_]](implicit arg0: Monad[M], arg1: Catchable[M], arg2: Capture[M]): ~>[LargeObjectManagerOp, [γ$0$]Kleisli[M, LargeObjectManager, γ$0$]]

def liftLargeObject[A](s: LargeObject, action: LargeObjectIO[A]): LargeObjectManagerIO[A]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def open(a: Long): LargeObjectManagerIO[LargeObject]

def open(a: Long, b: Int): LargeObjectManagerIO[LargeObject]

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

def toString(): String

def unlink(a: Long): LargeObjectManagerIO[Unit]

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from LargeObjectManagerIOInstances

Inherited from AnyRef

Inherited from Any

Algebra

Constructors (Lifting)

Constructors (Primitives)

Typeclass Instances

Ungrouped