Arrow CSV and JSON table reader classes

CsvTableReader and JsonTableReader wrap the Arrow C++ CSV and JSON table readers. See their usage in read_csv_arrow() and read_json_arrow(), respectively.

Factory

The CsvTableReader$create() and JsonTableReader$create() factory methods take the following arguments:

• file A character path to a local file, or an Arrow input stream

• convert_options (CSV only), parse_options, read_options: see CsvReadOptions

• ... additional parameters.

Methods

• $Read(): returns an Arrow Table.

Super class

arrow::Object -> CsvTableReader

Methods

Public methods

• CsvTableReader$Read()

• CsvTableReader$clone()

Inherited methods

• arrow::Object$initialize()

• arrow::Object$pointer()

• arrow::Object$print()

• arrow::Object$set_pointer()

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Method Read()

Usage

CsvTableReader$Read()

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Method clone()

The objects of this class are cloneable with this method.

Usage

CsvTableReader$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Super class

arrow::Object -> JsonTableReader

Methods

Public methods

• JsonTableReader$Read()

• JsonTableReader$clone()

Inherited methods

• arrow::Object$initialize()

• arrow::Object$pointer()

• arrow::Object$print()

• arrow::Object$set_pointer()

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Method Read()

Usage

JsonTableReader$Read()

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Method clone()

The objects of this class are cloneable with this method.

Usage

JsonTableReader$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.