Packages

  • package root

    Documentation/API for the Molecule library - a meta DSL for the Datomic database.

    scalamolecule.org | Github | Forum

    Definition Classes
    root
  • package molecule

    Molecule library - a Scala meta-DSL for the Datomic database.

    Molecule library - a Scala meta-DSL for the Datomic database.

    Definition Classes
    root
  • package core
    Definition Classes
    molecule
  • package generic
    Definition Classes
    core
  • package datom

    Generic Datom attribute interfaces of all arities.

    Generic Datom attribute interfaces of all arities.

    "Generic attributes" are special pre-defined attributes that can be combined with custom attributes in molecules to return meta data:

    // Get id of Ben entity with `e`
Person.e.name.get.head === (benEntityId, "Ben")

// When was Ben's age updated? Using `txInstant`
Person(benEntityId).age.txInstant.get.head === (42, <April 4, 2019>) // (Date)

// With a history db we can access the transaction number `t` and
// assertion/retraction statusses with `op`
Person(benEntityId).age.t.op.getHistory === List(
  (41, t1, true),  // age 41 asserted in transaction t1
  (41, t2, false), // age 41 retracted in transaction t2
  (42, t2, true)   // age 42 asserted in transaction t2
)

    Available generic attributes:

    • e - Entity id (Long)
    • a - Full attribute name like ":Person/name" (String)
    • v - Value of Datoms (Any)
    • t - Transaction pointer (Long/Int)
    • tx - Transaction entity id (Long)
    • txInstant - Transaction wall clock time (java.util.Date)
    • op - Operation status: assertion (true) / retraction (false)
    Definition Classes
    generic
  • Datom
  • Datom_0
  • Datom_1
  • Datom_10
  • Datom_11
  • Datom_12
  • Datom_13
  • Datom_14
  • Datom_15
  • Datom_16
  • Datom_17
  • Datom_18
  • Datom_19
  • Datom_2
  • Datom_20
  • Datom_21
  • Datom_22
  • Datom_3
  • Datom_4
  • Datom_5
  • Datom_6
  • Datom_7
  • Datom_8
  • Datom_9

trait Datom_21[Ns21[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _], Ns22[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _], In21[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _], In22[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _], A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U] extends Datom

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  1. Datom_21
  2. Datom
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Type Members

  1. final class a[Ns, In] extends OneString[Ns, In] with Indexed

    (Partition)-Namespace-prefixed attribute name (":part_Ns/attr")

    (Partition)-Namespace-prefixed attribute name (":part_Ns/attr")

    Definition Classes
    Datom
  2. final class e[Ns, In] extends OneLong[Ns, In] with Indexed

    Entity id (Long)

    Entity id (Long)

    Definition Classes
    Datom
  3. final class op[Ns, In] extends OneBoolean[Ns, In] with Indexed

    Transaction operation: assertion (true) or retraction (false)

    Transaction operation: assertion (true) or retraction (false)

    Definition Classes
    Datom
  4. final class t[Ns, In] extends OneLong[Ns, In] with Indexed

    Transaction point in time t (Long/Int)

    Transaction point in time t (Long/Int)

    Definition Classes
    Datom
  5. final class tx[Ns, In] extends OneLong[Ns, In] with Indexed

    Transaction entity id (Long)

    Transaction entity id (Long)

    Definition Classes
    Datom
  6. final class txInstant[Ns, In] extends OneDate[Ns, In] with Indexed

    Transaction wall-clock time (Date)

    Transaction wall-clock time (Date)

    Definition Classes
    Datom
  7. final class v[Ns, In] extends OneAny[Ns, In] with Indexed

    Datom value (Any)

    Datom value (Any)

    Definition Classes
    Datom
  8. type Next_[Attr[_, _], Type] = Attr[Ns22[A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, Type], In22[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _]] with Ns22[A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, Type]
  9. type Stay_[Attr[_, _], Type] = Attr[Ns21[A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U], In21[_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _]] with Ns21[A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U]

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final lazy val a: Next_[a, String]
  5. final lazy val a_: Stay_[a, String]
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  8. final lazy val e: Next_[e, Long]
  9. final lazy val e_: Stay_[e, Long]
  10. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  11. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  12. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  16. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  17. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  19. final lazy val op: Next_[op, Boolean]
  20. final lazy val op_: Stay_[op, Boolean]
  21. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  22. final lazy val t: Next_[t, Long]
  23. final lazy val t_: Stay_[t, Long]
  24. def toString(): String
    Definition Classes
    AnyRef → Any
  25. final lazy val tx: Next_[tx, Long]
  26. final lazy val txInstant: Next_[txInstant, Date]
  27. final lazy val txInstant_: Stay_[txInstant, Date]
  28. final lazy val tx_: Stay_[tx, Long]
  29. final lazy val v: Next_[v, Any]
  30. final lazy val v_: Stay_[v, Any]
  31. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  32. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from Datom

Inherited from AnyRef

Inherited from Any

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