MetastoreReader

Abstract Value Members

abstract def getLatest(tableName: String, until: Option[LocalDate] = None): DataFrame

Reads the latest partition of a given table.
Reads the latest partition of a given table.
In order to read a table it is not sufficient the table to be registered in the metastore. It also should be defined as input tables of the job. Otherwise, a runtime exception will be thrown.
tableName
The name of the table to read.
until
An optional upper boundary. When you run historical transformations you might want to limit the recency of input data. Uses the current information date if None.
returns
The dataframe containing data from the table.
abstract def getLatestAvailableDate(tableName: String, until: Option[LocalDate] = None): Option[LocalDate]

Returns the latest information date the table has data for.
Returns the latest information date the table has data for.
In order to read a table it is not sufficient the table to be registered in the metastore. It also should be defined as input tables of the job. Otherwise, a runtime exception will be thrown.
tableName
The name of the table to read.
until
An optional upper boundary. When you run historical transformations you might want to limit the recency of input data.
returns
The latest information date the table has data for, None otherwise.
abstract def getTable(tableName: String, infoDateFrom: Option[LocalDate] = None, infoDateTo: Option[LocalDate] = None): DataFrame

Reads a table given th range of information dates, and returns back the dataframe.
Reads a table given th range of information dates, and returns back the dataframe.
In order to read a table it is not sufficient the table to be registered in the metastore. It also should be defined as input tables of the job. Otherwise, a runtime exception will be thrown.
tableName
The name of the table to read.
infoDateFrom
The starting info date to fetch data from (inclusive). Uses the current information date if None.
infoDateTo
The ending info date (inclusive). Uses the current information date if None.
returns
The dataframe containing data from the table.
abstract def isDataAvailable(tableName: String, from: Option[LocalDate], until: Option[LocalDate]): Boolean

Returns true if data for the specified table is available for the specified range.
Returns true if data for the specified table is available for the specified range.
This method can be used for validations.
tableName
The name of the table to read.
from
The starting info date of the availability of the table (inclusive).
until
An upper boundary. When you run historical transformations you might want to limit the recency of input data.
returns
true if data is available for the specified range.

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Related Doc: package api

trait MetastoreReader extends AnyRef

Abstract Value Members

abstract def getLatest(tableName: String, until: Option[LocalDate] = None): DataFrame

abstract def getLatestAvailableDate(tableName: String, until: Option[LocalDate] = None): Option[LocalDate]

abstract def getTable(tableName: String, infoDateFrom: Option[LocalDate] = None, infoDateTo: Option[LocalDate] = None): DataFrame

abstract def isDataAvailable(tableName: String, from: Option[LocalDate], until: Option[LocalDate]): Boolean

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

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

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

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

def toString(): String

final def wait(): Unit

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

final def wait(arg0: Long): Unit

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