Class/Object

com.datastax.spark.connector.mapper

DefaultColumnMapper

Related Docs: object DefaultColumnMapper | package mapper

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class DefaultColumnMapper[T] extends ColumnMapper[T]

A ColumnMapper that assumes camel case naming convention for property accessors and constructor names and underscore naming convention for column names.

Example mapping:

case class User(
  login: String,         // mapped to "login" column
  emailAddress: String   // mapped to "email_address" column
  emailAddress2: String  // mapped to "email_address_2" column
)

Additionally, it is possible to name columns exactly the same as property names (case-sensitive):

case class TaxPayer(
  TIN: String            // mapped to "TIN" column
)
Linear Supertypes
ColumnMapper[T], AnyRef, Any
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Instance Constructors

  1. new DefaultColumnMapper(columnNameOverride: Map[String, String] = Map.empty)(implicit arg0: scala.reflect.api.JavaUniverse.TypeTag[T])

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    columnNameOverride

    maps property names to column names; use it to override default mapping for some properties

Value Members

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

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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    Attributes
    protected[java.lang]
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    AnyRef
    Annotations
    @throws( ... )

  6. def columnMapForReading(struct: StructDef, selectedColumns: IndexedSeq[ColumnRef]): ColumnMapForReading

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    Provides a mapping between given table or UDT and properties of type T, useful for creating objects of type T.

    Provides a mapping between given table or UDT and properties of type T, useful for creating objects of type T. Throws IllegalArgumentException if selectedColumns does not provide some columns needed to instantiate object of type T

    Definition Classes
    DefaultColumnMapper → ColumnMapper

  7. def columnMapForWriting(struct: StructDef, selectedColumns: IndexedSeq[ColumnRef]): ColumnMapForWriting

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    Provides a mapping between given table or UDT and properties of type T, useful for reading property values of type T and writing them to Cassandra.

    Provides a mapping between given table or UDT and properties of type T, useful for reading property values of type T and writing them to Cassandra. Throws IllegalArgumentException if selectedColumns contains some columns that don't have matching getters.

    Definition Classes
    DefaultColumnMapper → ColumnMapper

  8. def ctorParamToColumnName(paramName: String, columns: Map[String, ColumnRef]): Option[ColumnRef]

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

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    Definition Classes
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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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    Attributes
    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )

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

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  13. def getterToColumnName(getterName: String, columns: Map[String, ColumnRef]): Option[ColumnRef]

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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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    Definition Classes
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  17. def newTable(keyspaceName: String, tableName: String, protocolVersion: ProtocolVersion = ProtocolVersion.NEWEST_SUPPORTED): TableDef

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    Provides a definition of the table that class T could be saved to.

    Provides a definition of the table that class T could be saved to.

    Definition Classes
    DefaultColumnMapper → ColumnMapper

  18. final def notify(): Unit

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    Definition Classes
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  19. final def notifyAll(): Unit

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    Definition Classes
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  20. def setterToColumnName(setterName: String, columns: Map[String, ColumnRef]): Option[ColumnRef]

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

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  22. def toString(): String

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  23. final def wait(): Unit

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    @throws( ... )

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

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    @throws( ... )

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

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    Definition Classes
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    @throws( ... )

Inherited from ColumnMapper[T]

Inherited from AnyRef

Inherited from Any

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