case class DatasetReader(name: String, address: String, reader: DatasourceReader) extends IncrementalReader with Reader with Product with Serializable
Represents a Dataset reader that reads data from a specified data source using a given DatasourceReader.
- name
The name of the Dataset reader.
- address
The address of the data source to read from.
- reader
The DatasourceReader used to read data from the specified data source.
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new
DatasetReader(name: String, address: String, reader: DatasourceReader)
- name
The name of the Dataset reader.
- address
The address of the data source to read from.
- reader
The DatasourceReader used to read data from the specified data source.
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- val address: String
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val
name: String
The name of the data reader.
The name of the data reader.
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- DatasetReader → Reader
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final
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def
persistIncrementalState(): Unit
Persists the incremental state if any.
Persists the incremental state if any.
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def
read(sparkSession: SparkSession): DataFrame
Reads data from the specified data source using the provided DatasourceReader and SparkSession.
Reads data from the specified data source using the provided DatasourceReader and SparkSession.
- sparkSession
The SparkSession to use for reading data.
- returns
A DataFrame containing the data read from the data source.
- Definition Classes
- DatasetReader → Reader
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def
readIncremental(df: DataFrame, incremental: Option[Incremental]): DataFrame
Reads data from a DataFrame with optional incremental settings.
Reads data from a DataFrame with optional incremental settings.
- df
The DataFrame to read data from.
- incremental
Optional Incremental settings to apply.
- returns
A new DataFrame after applying incremental settings if provided, otherwise the original DataFrame.
- Definition Classes
- IncrementalReader
- val reader: DatasourceReader
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