Package

slick

lifted

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package lifted

Lifted embedding: Stable query api based on implicits and overloading lifting Scala code into Slick ASTs

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package.scala
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Type Members

  1. abstract class AbstractTable[T] extends Rep[T]

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    The profile-independent superclass of all table row objects.

    The profile-independent superclass of all table row objects.

    T

    Row type for this table. Make sure it matches the type of your * projection.

  2. trait AbstractTableShapeImplicits extends RepShapeImplicits

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  3. trait Aliases extends AnyRef

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    Aliases for lifted embedding features.

    Aliases for lifted embedding features. This trait can be mixed into aliasing objects which simplify the use of the lifted embedding.

  4. final class AnyExtensionMethods extends AnyVal

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    Extension methods for all columns and all primitive values that can be lifted to columns

  5. final class AnyOptionExtensionMethods[O <: Rep[_], P] extends AnyVal

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    Extension methods for Options of single- and multi-column values

  6. class AppliedCompiledFunction[PU, R <: Rep[_], RU] extends RunnableCompiled[R, RU]

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  7. final class BaseColumnExtensionMethods[P1] extends AnyVal with ColumnExtensionMethods[P1, P1] with BaseExtensionMethods[P1]

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  8. trait BaseExtensionMethods[B1] extends ExtensionMethods[B1, B1]

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  9. final class BaseJoinQuery[+E1, +E2, U1, U2, C[_], +B1, +B2] extends WrappingQuery[(E1, E2), (U1, U2), C]

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  10. final class BaseNumericColumnExtensionMethods[P1] extends AnyVal with NumericColumnExtensionMethods[P1, P1] with BaseExtensionMethods[P1]

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  11. trait BaseTag extends Tag

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    A Tag marking the base table instance itself

  12. final class BooleanColumnExtensionMethods[P1] extends AnyVal with ExtensionMethods[Boolean, P1]

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    Extension methods for Rep[Boolean] and Rep[Option[Boolean]]

  13. trait CanBeQueryCondition[-T] extends (T) ⇒ Rep[_]

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    A typeclass for types that can be used as predicates in filter calls.

    A typeclass for types that can be used as predicates in filter calls.

    Annotations
    @implicitNotFound( ... )
  14. class CaseClassShape[P <: Product, LiftedTuple, LiftedCaseClass <: P, PlainTuple, PlainCaseClass <: P] extends MappedScalaProductShape[FlatShapeLevel, P, LiftedCaseClass, PlainCaseClass, LiftedCaseClass]

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    A generic case class shape that can be used to lift a case class of plain Scala types to a case class of lifted types.

    A generic case class shape that can be used to lift a case class of plain Scala types to a case class of lifted types. This allows the type to be used as a record type (like tuples and HLists) in the Lifted Embedding.

    Example:

    case class C(a: Int, b: Option[String])
    case class LiftedC(a: Column[Int], b: Column[Option[String]])
    implicit object cShape extends CaseClassShape(LiftedC.tupled, C.tupled)
  15. trait ColumnExtensionMethods[B1, P1] extends ExtensionMethods[B1, P1]

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    Extension methods for all columns

  16. case class ColumnOrdered[T](column: Rep[T], ord: Ordering) extends Ordered with Product with Serializable

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    A Column with an associated Ordering.

  17. trait ColumnsShapeLevel extends FlatShapeLevel

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    ShapeLevel that only allows records of individual columns.

    ShapeLevel that only allows records of individual columns. This level is used for parameters of compiled queries.

  18. trait Compilable[T, C <: Compiled[T]] extends AnyRef

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    Typeclass for types that can be contained in a Compiled container.

    Typeclass for types that can be contained in a Compiled container. This includes all Executable types as well as functions (of any arity) from flat, fully packed parameter types to an Executable result type.

    Annotations
    @implicitNotFound( ... )
  19. trait CompilableFunctions extends CompilableLowPriority

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  20. trait CompilableLowPriority extends AnyRef

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  21. sealed trait Compiled[T] extends AnyRef

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    A possibly parameterized query that will be cached for repeated efficient execution without having to recompile it every time.

    A possibly parameterized query that will be cached for repeated efficient execution without having to recompile it every time. The compiled state is computed on demand the first time a Cached value is executed. It is always tied to a specific profile.

    Cached forms a limited monad which ensures that it can only contain values that are Compilable.

  22. abstract class CompiledExecutable[R, RU] extends RunnableCompiled[R, RU] with CompilersMixin

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  23. class CompiledFunction[F, PT, PU, R <: Rep[_], RU] extends Compiled[F] with CompilersMixin

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  24. abstract class CompiledStreamingExecutable[R, RU, EU] extends CompiledExecutable[R, RU] with StreamableCompiled[R, RU, EU]

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  25. trait CompilersMixin extends AnyRef

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  26. class ConstColumn[T] extends TypedRep[T]

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    A scalar value that is known at the client side at the time a query is executed.

    A scalar value that is known at the client side at the time a query is executed. This is either a constant value (LiteralColumn) or a scalar parameter.

  27. trait ConstColumnShapeImplicits extends RepShapeImplicits

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  28. trait Constraint extends AnyRef

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    Marker trait for foreign key and primary key constraints.

  29. trait Executable[T, TU] extends AnyRef

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    Typeclass for types that can be executed as queries.

    Typeclass for types that can be executed as queries. This encompasses collection-valued (Query[_, _, _[_] ]), scalar and record types.

    Annotations
    @implicitNotFound( ... )
  30. trait ExtensionMethodConversions extends AnyRef

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  31. trait ExtensionMethods[B1, P1] extends Any

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  32. trait FlatShapeLevel extends NestedShapeLevel

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    ShapeLevel that does not allow nested collections.

    ShapeLevel that does not allow nested collections. This is the standard level for executable queries.

  33. final class ForeignKey extends AnyRef

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    Represents a foreign key.

    Represents a foreign key. Objects of this type are used internally by Slick. At the user level you generally see ForeignKeyQuery objects instead.

  34. class ForeignKeyQuery[E <: AbstractTable[_], U] extends WrappingQuery[E, U, Seq] with Constraint

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    A query that selects data linked by a foreign key.

  35. final class FunctionSymbolExtensionMethods extends AnyRef

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    Utility methods for internal use in the lifted embedding

  36. class Index extends AnyRef

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    An index (or foreign key constraint with an implicit index).

  37. class Isomorphism[A, B] extends AnyRef

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    An isomorphism between two types that can be used for mapped column types.

  38. final case class LiteralColumn[T](value: T)(implicit tt: TypedType[T]) extends ConstColumn[T] with Product with Serializable

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    A column with a constant value which is inserted into an SQL statement as a literal.

  39. abstract class MappedProductShape[Level <: ShapeLevel, C, M <: C, U <: C, P <: C] extends ProductNodeShape[Level, C, M, U, P]

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    Base class for ProductNodeShapes with a type mapping

  40. class MappedProjection[T, P] extends Rep[T]

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  41. abstract class MappedScalaProductShape[Level <: ShapeLevel, C <: Product, M <: C, U <: C, P <: C] extends MappedProductShape[Level, C, M, U, P]

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    Base class for ProductNodeShapes with a type mapping to a type that extends scala.Product

  42. trait MappedTo[T] extends MappedToBase

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    The base type for automatically mapped column types.

    The base type for automatically mapped column types. Extending this type (with a type parameter T which is already a supported column type) lets you use your custom type as a column type in the Lifted Embedding. You must provide a constructor that takes a single value of the underlying type (same restriction as for value classes).

  43. trait MappedToBase extends Any

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  44. trait NestedShapeLevel extends ShapeLevel

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    ShapeLevel that allows nested collections.

  45. trait NumericColumnExtensionMethods[B1, P1] extends ExtensionMethods[B1, P1]

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    Extension methods for numeric columns

  46. final class OptionColumnExtensionMethods[B1] extends AnyVal with ColumnExtensionMethods[B1, Option[B1]] with OptionExtensionMethods[B1]

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  47. trait OptionExtensionMethods[B1] extends ExtensionMethods[B1, Option[B1]]

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  48. sealed trait OptionLift[M, O] extends AnyRef

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    A typeclass that lifts a mixed type to the packed Option type.

  49. sealed trait OptionLiftLowPriority extends AnyRef

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  50. trait OptionMapper[BR, R] extends (Rep[BR]) ⇒ Rep[R]

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  51. sealed trait OptionMapper2[B1, B2, BR, P1, P2, R] extends OptionMapper[BR, R]

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    Annotations
    @implicitNotFound( ... )
  52. sealed trait OptionMapper3[B1, B2, B3, BR, P1, P2, P3, R] extends OptionMapper[BR, R]

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    Annotations
    @implicitNotFound( ... )
  53. final class OptionNumericColumnExtensionMethods[B1] extends AnyVal with NumericColumnExtensionMethods[B1, Option[B1]] with OptionExtensionMethods[B1]

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  54. trait OptionShapeImplicits extends AnyRef

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  55. class Ordered extends AnyRef

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  56. final class Parameters[PU, PP] extends AnyRef

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  57. case class PrimaryKey(name: String, columns: IndexedSeq[Node]) extends Constraint with Product with Serializable

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    An explicit primary key.

    An explicit primary key. Simple primary keys can also be represented by O.PrimaryKey column options instead.

  58. class ProductClassShape[E <: Product, C <: Product] extends MappedScalaProductShape[FlatShapeLevel, Product, C, E, C]

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    A generic Product class shape that can be used to lift a class of plain Scala types to a class of lifted types.

    A generic Product class shape that can be used to lift a class of plain Scala types to a class of lifted types. This allows the type to be used as a record type (like tuples and HLists) in the Lifted Embedding.

    This can help with mapping tables >22 columns to classes, especially when using code generation. This can be used for Scala 2.11 case classes >22 fields.

    Example:

    def columnShape[T](implicit s: Shape[FlatShapeLevel, Column[T], T, Column[T]]) = s
    class C(val a: Int, val b: Option[String]) extends Product{
      def canEqual(that: Any): Boolean = that.isInstanceOf[C]
      def productArity: Int = 2
      def productElement(n: Int): Any = Seq(a, b)(n)
    }
    class LiftedC(val a: Column[Int], val b: Column[Option[String]]) extends Product{
      def canEqual(that: Any): Boolean = that.isInstanceOf[LiftedC]
      def productArity: Int = 2
      def productElement(n: Int): Any = Seq(a, b)(n)
    }
    implicit object cShape extends ProductClassShape(
      Seq(columnShape[Int], columnShape[Option[String]]),
      seq => new LiftedC(seq(0).asInstanceOf[Column[Int]], seq(1).asInstanceOf[Column[Option[String]]]),
      seq => new C(seq(0).asInstanceOf[Int], seq(1).asInstanceOf[Option[String]])
    )
  59. abstract class ProductNodeShape[Level <: ShapeLevel, C, M <: C, U <: C, P <: C] extends Shape[Level, M, U, P]

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    Base class for Shapes of record values which are represented by ProductNodes in the AST.

    Base class for Shapes of record values which are represented by ProductNodes in the AST.

    C

    The supertype for the record values.

    M

    The mixed type of the Shape (a subtype of C).

    U

    The unpacked type of the Shape (a subtype of C).

    P

    The fully packed type of the Shape (a subtype of C).

  60. trait ProvenShape[U] extends AnyRef

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    A limited version of ShapedValue which can be constructed for every type that has a valid shape.

    A limited version of ShapedValue which can be constructed for every type that has a valid shape. We use it to enforce that a table's * projection has a valid shape. A ProvenShape has itself a Shape so it can be used in place of the value that it wraps for purposes of packing and unpacking.

  61. sealed abstract class Query[+E, U, C[_]] extends QueryBase[C[U]]

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    An instance of Query represents a query or view, i.e.

    An instance of Query represents a query or view, i.e. a computation of a collection type (Rep[Seq[T]]). It is parameterized with both, the mixed type (the type of values you see e.g. when you call map()) and the unpacked type (the type of values that you get back when you run the query).

    Additional extension methods for queries containing a single column are defined in slick.lifted.SingleColumnQueryExtensionMethods.

  62. sealed trait QueryBase[T] extends Rep[T]

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  63. abstract class RefTag extends Tag

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    A Tag for table instances that represent a Node

  64. trait Rep[T] extends AnyRef

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    Common base trait for all lifted values, including columns.

    Common base trait for all lifted values, including columns.

    All column operations are added with extension methods that depend on the type inside the Rep. These are defined in:

    A Rep[T : TypedType] is always Typed, so that the TypedType can be retrieved directly from the Rep value.

  65. final case class RepOption[T](base: ShapedValue[_, _], toNode: Node) extends Rep[Option[T]] with Product with Serializable

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    Represents Rep[Option[T]] in all cases where T is not a column base type.

    Represents Rep[Option[T]] in all cases where T is not a column base type. This special representation is necessary so that a non-Option Rep value can be retrieved for encoding Option-based operations. This base value is of type T if T <: Rep[_], otherwise of type Rep[T].

  66. trait RepShapeImplicits extends OptionShapeImplicits

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  67. trait RunnableCompiled[R, RU] extends Compiled[R]

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    A compiled value that can be executed to obtain its result.

  68. abstract class Shape[Level <: ShapeLevel, -Mixed_, Unpacked_, Packed_] extends AnyRef

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    A type class that encodes the unpacking Mixed => Unpacked of a Query[Mixed] to its result element type Unpacked and the packing to a fully packed type Packed, i.e.

    A type class that encodes the unpacking Mixed => Unpacked of a Query[Mixed] to its result element type Unpacked and the packing to a fully packed type Packed, i.e. a type where everything which is not a transparent container is wrapped in a Column[_].

    Example:

    - Mixed: (Column[Int], Column[(Int, String)], (Int, Option[Double])) - Unpacked: (Int, (Int, String), (Int, Option[Double])) - Packed: (Column[Int], Column[(Int, String)], (Column[Int], Column[Option[Double]])) - Linearized: (Int, Int, String, Int, Option[Double])

    Annotations
    @implicitNotFound( ... )
  69. trait ShapeLevel extends AnyRef

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    The level of a Shape, i.e.

    The level of a Shape, i.e. what kind of types it allows. Subtypes of this trait are used as a phantom type for Shape resolution. There are no instances of any ShapeLevel.

  70. case class ShapedValue[T, U](value: T, shape: Shape[_ <: FlatShapeLevel, T, U, _]) extends Rep[U] with Product with Serializable

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    A value together with its Shape

  71. trait SimpleBinaryOperator extends BinaryNode

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    A SimpleBinaryOperator gets translated to a binary operator call in SQL.

  72. trait SimpleExpression extends Node

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    A SimpleExpression allows arbitrary SQL code to be generated.

  73. trait SimpleFunction extends Node

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    A SimpleFunction gets translated to a plain function call or JDBC/ODBC scalar function {fn ...} call in SQL.

  74. final case class SimpleLiteral(name: String)(buildType: Type) extends NullaryNode with SimplyTypedNode with Product with Serializable

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    A SimpleLiteral is inserted verbatim into a SQL query string.

    A SimpleLiteral is inserted verbatim into a SQL query string. For the purpose of handling it in the query compiler it is assumed to be an expression of the specified type.

  75. final class SingleColumnQueryExtensionMethods[B1, P1, C[_]] extends AnyVal

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    Extension methods for Queries of a single column

  76. trait StreamableCompiled[R, RU, EU] extends RunnableCompiled[R, RU]

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    A compiled value that can be executed to obtain its result as a stream of data.

  77. trait StreamingExecutable[T, TU, EU] extends Executable[T, TU]

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    Typeclass for types that can be executed as streaming queries, i.e.

    Typeclass for types that can be executed as streaming queries, i.e. only collection-valued (Query[_, _, _[_] ]) types. This is used as a phantom type for computing the required types. The actual value is always null.

    Annotations
    @implicitNotFound( ... )
  78. final class StringColumnExtensionMethods[P1] extends AnyVal with ExtensionMethods[String, P1]

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    Extension methods for Rep[String] and Rep[Option[String]]

  79. class TableQuery[E <: AbstractTable[_]] extends Query[E, lifted.TableQuery.E.TableElementType, Seq]

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    Represents a database table.

    Represents a database table. Profiles add extension methods to TableQuery for operations that can be performed on tables but not on arbitrary queries, e.g. getting the table DDL.

  80. sealed trait Tag extends AnyRef

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    A Tag marks a specific row represented by an AbstractTable instance.

  81. final class TupleShape[Level <: ShapeLevel, M <: Product, U <: Product, P <: Product] extends ProductNodeShape[Level, Product, M, U, P]

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    Shape for Scala tuples of all arities

  82. trait TupleShapeImplicits extends AnyRef

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  83. class WrappingQuery[+E, U, C[_]] extends Query[E, U, C]

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Value Members

  1. object CanBeQueryCondition

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  2. object Case

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    Case provides a DSL for conditional statements in the query language.

    Case provides a DSL for conditional statements in the query language. An arbitrary number of If...Then expressions can be chained, optionally followed by Else, e.g.:

    Case If u.id < 3 Then "low" If u.id < 6 Then "medium" Else "high"

    All result expressions have to be of compatible type (modulo nullability). If at least one of them is an Option type or the Else branch is missing, the result is also an Option.

  3. object Compilable extends CompilableFunctions

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  4. object Compiled

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  5. object Executable

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  6. object ForeignKey

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  7. object FunctionSymbolExtensionMethods

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  8. object Functions

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    Contains stand-alone database functions for use in queries.

    Contains stand-alone database functions for use in queries. Functions which operate on columns are generally added as extension methods to the appropriate column types instead.

  9. object MappedToBase

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  10. object OptionLift extends OptionLiftLowPriority

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  11. object OptionMapper2

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  12. object OptionMapper3

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  13. object OptionMapperDSL

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  14. object Ordered

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  15. object Parameters

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  16. object ProvenShape

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  17. object Query

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    The companion object for Query contains factory methods for creating queries.

  18. object Rep

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  19. object RepShape extends Shape[FlatShapeLevel, Rep[_], Any, Rep[_]]

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    Shape for Rep values (always fully packed)

  20. object Shape extends ConstColumnShapeImplicits with AbstractTableShapeImplicits with TupleShapeImplicits

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  21. object ShapedValue extends Serializable

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  22. object SimpleBinaryOperator

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  23. object SimpleExpression

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  24. object SimpleFunction

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  25. object SimpleLiteral extends Serializable

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  26. object StreamingExecutable extends StreamingExecutable[Rep[Any], Any, Any]

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    A prototype StreamingExecutable instance for Rep types.

  27. object TableQuery

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  28. object TableQueryMacroImpl

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