Packages

  • package root

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

    Manual | 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.

    See api package for various api imports to start using Molecule.

    Sub-packages

    api Molecule API.
    ast Internal Molecule ASTs.
    boilerplate Internal interfaces for auto-generated DSL boilerplate code.
    composition    Builder methods to compose molecules.
    exceptions Exceptions thrown by Molecule.
    expression Attribute expressions and operations.
    facade Molecule facades to Datomic.
    factory Implicit macro methods `m` to instantiate molecules from custom DSL molecule constructs.
    input Input molecules awaiting input.
    macros Internal macros generating molecule code from custom DSL molecule constructs.
    generic Interfaces to generic information about datoms and Datomic database.
    ops Internal operational helpers for transforming DSL to molecule.
    schema Schema definition DSL.
    transform Internal transformers from DSL to Model/Query/Transaction.
    util Internal Java database functions for Datomic.

    Definition Classes
    root
  • package api

    Public interface to be imported to use Molecule.

    Public interface to be imported to use Molecule.

    To make the Molecule macro materializations as fast as possible we try to import as few macro implicits as possible. If your application code build molecules with at the most 10 attributes, then you can do the following import to start using Molecule:

    import molecule.api.out10._

    out means "output molecule" , and 10 the maximum arity or number of attributes of your molecules.

    If you use input molecules awaiting an input then you can add inX where X is how many inputs (1, 2 or 3) you will use, for instance:

    import molecule.api.in2_out10._

    This way we keep the implicit macro def lookups to a minimum and compilation speed as fast as possible.

    Arities can be changed anytime you like. But not to a lower arity than that of the molecules you use in scope of the import.

    Definition Classes
    molecule
  • package get

    Synchronous getter methods to retrieve data from Datomic.

    Synchronous getter methods to retrieve data from Datomic.

    The Datomic On-Prem(ises) server model provides a Peer that returns data synchronously. The Peer which lives in application memory caches data aggressively and for data fitting in memory latency can be extremely low and queries return very fast. And even when access to disk is needed, clever branching is used. Memcached is also an option.

    The Datomic Cloud model data returns data asynchronously. If Datomic creates a Java API for the Cloud model, Molecule could relatively easy adapt to this model too. In the meanwhile, Future-wrapped methods in this package can be used.

    Molecule has 5 groups of synchronous getters, each returning data in various formats:

    • GetArray - fastest retrieved typed data set. Can be traversed with a fast while loop
    • GetIterable - for lazily traversing row by row
    • GetJson - data formatted as Json string
    • GetList - default getter returning Lists of tuples. Convenient typed data, suitable for smaller data sets
    • GetRaw - fastest retrieved raw un-typed data from Datomic

    Getters in each of the 5 groups come with 5 time-dependent variations:

    • get [current data]
    • getAsOf
    • getSince
    • getWith
    • getHistory

    Each time variation has various overloads taking different parameters (see each group for more info).

    Definition Classes
    api
    See also

    equivalent asynchronous getters in the getAsync package.

  • GetArray
  • GetIterable
  • GetJson
  • GetList
  • GetRaw

trait GetRaw extends AnyRef

Data getter methods on molecules that return raw untyped Datomic data.

Returns raw untyped java.util.Collection[java.util.List[Object]] directly from Datomic and is therefore the fastest (but untyped) way of retrieving data. Can be useful where typed data is not needed.

Self Type
GetRaw with MoleculeBase
Source
GetRaw.scala
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  10. def getRaw(n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule.

    Get java.util.Collection of n untyped rows matching molecule.

    Person.name.age.getRaw(1).toString === """[["Ben" 42]]"""
    n

    Number of rows

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Equivalent asynchronous getAsyncRaw method.

  11. def getRaw(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule.

    Get java.util.Collection of all untyped rows matching molecule.

    Person.name.age.getRaw.toString === """[["Ben" 42], ["Liz" 37]]"""
    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Equivalent asynchronous getAsyncRaw method.

  12. def getRawAsOf(date: Date, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule as of date.

    Get java.util.Collection of n untyped rows matching molecule as of date.

    Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Get data at a human point in time (a java.util.Date).

    val beforeInsert = new java.util.Date
    
    // Insert
    val tx1 = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    )
    val ben = tx1.eid
    val afterInsert = new java.util.Date
    
    // Update
    val tx2 = Person(ben).age(43).update
    val afterUpdate = new java.util.Date
    
    // Retract
    val tx3 = ben.retract
    val afterRetract = new java.util.Date
    
    // Get all rows of raw data as of beforeInsert
    Person.name.age.getRawAsOf(beforeInsert).toString === """[]"""
    
    // Get all rows of raw data as of afterInsert
    Person.name.age.getRawAsOf(afterInsert).toString === """[["Liz" 37], ["Ben" 42]]"""
    
    // Get n (1) rows of raw data as of afterInsert
    Person.name.age.getRawAsOf(afterInsert, 1).toString === """[["Liz" 37]]"""
    date

    java.util.Date

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  13. def getRawAsOf(date: Date)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule as of date.

    Get java.util.Collection of all untyped rows matching molecule as of date.

    Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Get data at a human point in time (a java.util.Date).

    val beforeInsert = new java.util.Date
    
    // Insert
    val tx1 = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    )
    val ben = tx1.eid
    val afterInsert = new java.util.Date
    
    // Update
    val tx2 = Person(ben).age(43).update
    val afterUpdate = new java.util.Date
    
    // Retract
    val tx3 = ben.retract
    val afterRetract = new java.util.Date
    
    // Get raw data as of beforeInsert
    Person.name.age.getRawAsOf(beforeInsert).toString === """[]"""
    
    // Get raw data as of afterInsert
    Person.name.age.getRawAsOf(afterInsert).toString === """[["Liz" 37], ["Ben" 42]]"""
    
    // Get raw data as of afterUpdate
    Person.name.age.getRawAsOf(afterUpdate).toString === """[["Liz" 37], ["Ben" 43]]""" // Ben now 43
    
    // Get raw data as of afterRetract
    Person.name.age.getRawAsOf(afterRetract).toString === """[["Liz" 37]]""" // Ben gone
    date

    java.util.Date

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  14. def getRawAsOf(tx: TxReport, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule as of tx.

    Get java.util.Collection of n untyped rows matching molecule as of tx.

    The Array is only populated with n rows of type-casted tuples. Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Datomic's internal asOf method can take a transaction entity id as argument to retrieve a database value as of that transaction (including).

    Instead of supplying the transaction entity id, in Molecule we supply a TxReport that contains the transaction entity id (which is used as argument to Datomic internally). This is more convenient when using Molecule since we getAsync a TxReport from transaction operations like get, update, retract etc.

    // Insert (tx report 1)
    val tx1 = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    )
    val ben = tx1.eid
    
    // Update (tx report 2)
    val tx2 = Person(ben).age(43).update
    
    // Retract (tx report 3)
    val tx3 = ben.retract
    
    // Get all rows of raw data as of tx1 (after insert)
    Person.name.age.getRawAsOf(tx1).toString === """[["Liz" 37], ["Ben" 42]]"""
    
    // Get n (1) rows of raw data as of tx1 (after insert)
    Person.name.age.getRawAsOf(tx1, 1).toString === """[["Liz" 37]]"""
    tx

    TxReport (returned from all molecule transaction operations)

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  15. def getRawAsOf(tx: TxReport)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule as of tx.

    Get java.util.Collection of all untyped rows matching molecule as of tx.

    Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Datomic's internal asOf method can take a transaction entity id as argument to retrieve a database value as of that transaction (including).

    Instead of supplying the transaction entity id, in Molecule we supply a TxReport that contains the transaction entity id (which is used as argument to Datomic internally). This is more convenient when using Molecule since we getAsync a TxReport from transaction operations like get, update, retract etc.

    // Insert (tx report 1)
    val tx1 = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    )
    val ben = tx1.eid
    
    // Update (tx report 2)
    val tx2 = Person(ben).age(43).update
    
    // Retract (tx report 3)
    val tx3 = ben.retract
    
    // Get raw data as of tx1 (after insert)
    Person.name.age.getRawAsOf(tx1).toString === """[["Liz" 37], ["Ben" 42]]"""
    
    // Get raw data as of tx2 (after update)
    Person.name.age.getRawAsOf(tx2).toString === """[["Liz" 37], ["Ben" 43]]""" // Ben now 43
    
    // Get raw data as of tx3 (after retract)
    Person.name.age.getRawAsOf(tx3).toString === """[["Liz" 37]]""" // Ben gone
    tx

    TxReport (returned from all molecule transaction operations)

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  16. def getRawAsOf(t: Long, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule as of transaction time t.

    Get java.util.Collection of n untyped rows matching molecule as of transaction time t.

    Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Transaction time t is an auto-incremented transaction number assigned internally by Datomic.

    t can for instance be retrieved in a getHistory call for an attribute and then be used to get data as of that point in time (including that transaction):

    // Insert (t 1028)
    val List(ben, liz) = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    ) eids
    
    // Update (t 1031)
    Person(ben).age(43).update
    
    // History of Ben
    Person(ben).age.t.op.getHistory.sortBy(r => (r._2, r._3)) === List(
      (42, 1028, true),  // Insert:  42 asserted
      (42, 1031, false), // Update:  42 retracted
      (43, 1031, true),  //          43 asserted
    )
    
    // Get all rows of raw data as of transaction t 1031 (after update)
    Person.name.age.getRawAsOf(1028).toString === """[["Ben" 43], ["Liz" 37]]"""
    
    // Get n (1) rows of raw data as of transaction t 1031 (after update)
    Person.name.age.getRawAsOf(1031, 1).toString === """[["Ben" 43]]"""
    t

    Transaction time t

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  17. def getRawAsOf(t: Long)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule as of transaction time t.

    Get java.util.Collection of all untyped rows matching molecule as of transaction time t.

    Call getRawAsOf when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Transaction time t is an auto-incremented transaction number assigned internally by Datomic.

    t can for instance be retrieved in a getHistory call for an attribute and then be used to get data as of that point in time (including that transaction):

    // Insert (t 1028)
    val List(ben, liz) = Person.name.age insert List(
      ("Ben", 42),
      ("Liz", 37),
    ) eids
    
    // Update (t 1031)
    Person(ben).age(43).update
    
    // Retract (t 1032)
    ben.retract
    
    // History of Ben
    Person(ben).age.t.op.getHistory.sortBy(r => (r._2, r._3)) === List(
      (42, 1028, true),  // Insert:  42 asserted
      (42, 1031, false), // Update:  42 retracted
      (43, 1031, true),  //          43 asserted
      (43, 1032, false)  // Retract: 43 retracted
    )
    
    // Get raw data as of transaction t 1028 (after insert)
    Person.name.age.getRawAsOf(1028).toString === """[["Ben" 42], ["Liz" 37]]"""
    
    // Get raw data as of transaction t 1031 (after update)
    Person.name.age.getRawAsOf(1031).toString === """[["Ben" 43], ["Liz" 37]]""" // Ben now 43
    
    // Get raw data as of transaction t 1032 (after retract)
    Person.name.age.getRawAsOf(1032).toString === """[["Liz" 37]]""" // Ben gone
    t

    Transaction time t

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawAsOf method.

  18. def getRawSince(date: Date, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule since date.

    Get java.util.Collection of n untyped rows matching molecule since date.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Get data added/retracted since a human point in time (a java.util.Date).

    // Transact 3 times (`inst` retrieves transaction time from tx report)
    val date1 = Person.name("Ann").save.inst
    val date2 = Person.name("Ben").save.inst
    val date3 = Person.name("Cay").save.inst
    
    // Current values
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since date1
    Person.name.getRawSince(date1).toString === """[["Ben"], ["Cay"]]"""
    
    // Ben and Cay added since date1 - only n (1) rows returned
    Person.name.getRawSince(date1, 1).toString === """[["Ben"]]"""
    date

    java.util.Date

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  19. def getRawSince(date: Date)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule since date.

    Get java.util.Collection of all untyped rows matching molecule since date.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Get data added/retracted since a human point in time (a java.util.Date).

    // Transact 3 times (`inst` retrieves transaction time from tx report)
    val date1 = Person.name("Ann").save.inst
    val date2 = Person.name("Ben").save.inst
    val date3 = Person.name("Cay").save.inst
    
    // Current values
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since date1
    Person.name.getRawSince(date1).toString === """[["Ben"], ["Cay"]]"""
    
    // Cay added since date2
    Person.name.getRawSince(date2).toString === """[["Cay"]]"""
    
    // Nothing added since date3
    Person.name.getRawSince(date3).toString === """[]"""
    date

    java.util.Date

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  20. def getRawSince(tx: TxReport, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule since tx.

    Get java.util.Collection of n untyped rows matching molecule since tx.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Datomic's internal since method can take a transaction entity id as argument to retrieve a database value since that transaction (excluding).

    Instead of supplying the transaction entity id, in Molecule we supply a TxReport that contains the transaction entity id (which is used as argument to Datomic internally). This is more convenient when using Molecule since we getAsync a TxReport from transaction operations like get, update, retract etc.

    // Get tx reports for 3 transactions
    val tx1 = Person.name("Ann").save
    val tx2 = Person.name("Ben").save
    val tx3 = Person.name("Cay").save
    
    // Current values
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since tx1
    Person.name.getRawSince(tx1).toString === """[["Ben"], ["Cay"]]"""
    
    // Ben and Cay added since tx1 - only n (1) rows returned
    Person.name.getRawSince(tx1, 1).toString === """[["Ben"]]"""
    tx

    TxReport (returned from all molecule transaction operations)

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  21. def getRawSince(tx: TxReport)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule since tx.

    Get java.util.Collection of all untyped rows matching molecule since tx.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Datomic's internal since method can take a transaction entity id as argument to retrieve a database value since that transaction (excluding).

    Instead of supplying the transaction entity id, in Molecule we supply a TxReport that contains the transaction entity id (which is used as argument to Datomic internally). This is more convenient when using Molecule since we getAsync a TxReport from transaction operations like get, update, retract etc.

    // Get tx reports for 3 transactions
    val tx1 = Person.name("Ann").save
    val tx2 = Person.name("Ben").save
    val tx3 = Person.name("Cay").save
    
    // Current values
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since tx1
    Person.name.getRawSince(tx1).toString === """[["Ben"], ["Cay"]]"""
    
    // Cay added since tx2
    Person.name.getRawSince(tx2).toString === """[["Cay"]]"""
    
    // Nothing added since tx3
    Person.name.getRawSince(tx3).toString === """[]"""
    tx

    TxReport (returned from all molecule transaction operations)

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  22. def getRawSince(t: Long, n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule since transaction time t.

    Get java.util.Collection of n untyped rows matching molecule since transaction time t.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Transaction time t is an auto-incremented transaction number assigned internally by Datomic.

    t can for instance be retrieved calling t on the tx report returned from transactional operations and then be used to get data since that point in time (excluding that transaction):

    // 3 transaction times `t`
    val t1 = Person.name("Ann").save.t
    val t2 = Person.name("Ben").save.t
    val t3 = Person.name("Cay").save.t
    
    // Current values as Iterable
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since transaction time t1
    Person.name.getRawSince(t1).toString === """[["Ben"], ["Cay"]]"""
    
    // Ben and Cay added since transaction time t1 - only n (1) rows returned
    Person.name.getRawSince(t1).toString === """[["Ben"]]"""
    t

    Transaction time t

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  23. def getRawSince(t: Long)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule since transaction time t.

    Get java.util.Collection of all untyped rows matching molecule since transaction time t.

    Call getRawSince when data doesn't need to be type-casted. Datomic's raw data is returned as-is.

    Transaction time t is an auto-incremented transaction number assigned internally by Datomic.

    t can for instance be retrieved calling t on the tx report returned from transactional operations and then be used to get data since that point in time (excluding that transaction):

    // 3 transaction times `t`
    val t1 = Person.name("Ann").save.t
    val t2 = Person.name("Ben").save.t
    val t3 = Person.name("Cay").save.t
    
    // Current values as Iterable
    Person.name.get === List("Ann", "Ben", "Cay")
    
    // Ben and Cay added since transaction time t1
    Person.name.getRawSince(t1).toString === """[["Ben"], ["Cay"]]"""
    
    // Cay added since transaction time t2
    Person.name.getRawSince(t2).toString === """[["Cay"]]"""
    
    // Nothing added since transaction time t3
    Person.name.getRawSince(t3).toString === """[]"""
    t

    Transaction time t

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on asof/since

    Equivalent asynchronous getAsyncRawSince method.

  24. def getRawWith(txData: List[_], n: Int)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule with applied raw transaction data.

    Get java.util.Collection of n untyped rows matching molecule with applied raw transaction data.

    Apply raw transaction data to in-memory "branch" of db without affecting db to see how it would then look:

    // Live size of Person db
    Person.name.get.size === 150
    
    // Read some transaction data from file
    val data_rdr2 = new FileReader("examples/resources/seattle/seattle-data1a.dtm")
    val newDataTx = Util.readAll(data_rdr2).get(0).asInstanceOf[java.util.List[Object]]
    
    // Imagine future db - 100 persons would be added, apparently
    Person.name.getRawWith(newDataTx).size === 250
    
    // Imagine future db - Let's just take 10
    Person.name.getRawWith(newDataTx, 10).size === 10
    txData

    Raw transaction data as java.util.List[Object]

    n

    Int Number of rows returned

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on with

    Equivalent asynchronous getAsyncRawWith method.

  25. def getRawWith(txData: List[_])(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule with applied raw transaction data.

    Get java.util.Collection of all untyped rows matching molecule with applied raw transaction data.

    Apply raw transaction data to in-memory "branch" of db without affecting db to see how it would then look:

    // Live size of Person db
    Person.name.get.size === 150
    
    // Read some transaction data from file
    val data_rdr2 = new FileReader("examples/resources/seattle/seattle-data1a.dtm")
    val newDataTx = Util.readAll(data_rdr2).get(0).asInstanceOf[java.util.List[Object]]
    
    // Imagine future db - 100 persons would be added, apparently
    Person.name.getRawWith(newDataTx).size === 250
    txData

    Raw transaction data as java.util.List[Object]

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on with

    Equivalent asynchronous getAsyncRawWith method.

  26. def getRawWith(n: Int, txMolecules: Seq[Seq[Statement]]*)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of n untyped rows matching molecule with applied molecule transaction data.

    Get java.util.Collection of n untyped rows matching molecule with applied molecule transaction data.

    Apply one or more molecule transactions to in-memory "branch" of db without affecting db to see how it would then look:

    // Current state
    val List(ben, liz) = Person.name.likes.insert(
      ("Ben", "pasta"),
      ("Liz", "pizza")
    ).eids
    
    // Test multiple transactions
    Person.name.likes.getRawWith(
      Person(ben).likes("sushi").getUpdateTx,
      Person(liz).likes("cake").getUpdateTx
    ).toString === """[["Ben" "sushi"], ["Liz" "cake"]]"""
    
    // Same as above, but only n (1) rows returned:
    Person.name.likes.getRawWith(
      1
      Person(ben).likes("sushi").getUpdateTx,
      Person(liz).likes("cake").getUpdateTx
    ).toString === """[["Ben" "sushi"]]"""

    Multiple transactions can be applied to test more complex what-if scenarios!

    n

    Int Number of rows returned

    txMolecules

    Transaction statements from applied Molecules with test data

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    Note

    Note how the n parameter has to come before the txMolecules vararg.

    See also

    Manual on with

    Equivalent asynchronous getAsyncRawWith method.

  27. def getRawWith(txMolecules: Seq[Seq[Statement]]*)(implicit conn: Conn): Collection[List[AnyRef]]

    Get java.util.Collection of all untyped rows matching molecule with applied molecule transaction data.

    Get java.util.Collection of all untyped rows matching molecule with applied molecule transaction data.

    Apply one or more molecule transactions to in-memory "branch" of db without affecting db to see how it would then look:

    // Current state
    val ben = Person.name("Ben").likes("pasta").save.eid
    
    // Base data
    Person.name.likes.getRawWith(
      Person(ben).likes("sushi").getUpdateTx
    ).toString ==== """[["Ben" "sushi"]]"""
    
    // Current state is still the same
    Person.name.likes.get === List(("Ben", "pasta"))

    Multiple transactions can be applied to test more complex what-if scenarios!

    txMolecules

    Transaction statements from applied Molecules with test data

    conn

    Implicit Conn value in scope

    returns

    java.util.Collection[java.util.List[AnyRef]]

    See also

    Manual on with

    Equivalent asynchronous getAsyncRawWith method.

  28. def hashCode(): Int
    Definition Classes
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    @native()
  29. final def isInstanceOf[T0]: Boolean
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  30. final def ne(arg0: AnyRef): Boolean
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  31. final def notify(): Unit
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  32. final def notifyAll(): Unit
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    @native()
  33. final def synchronized[T0](arg0: ⇒ T0): T0
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  34. def toString(): String
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  35. final def wait(): Unit
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  36. final def wait(arg0: Long, arg1: Int): Unit
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  37. final def wait(arg0: Long): Unit
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get

getRawAsOf

getRawSince

getRawWith

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