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Schema

This documentation reflects Arrow JS v4.0. Needs to be updated for the new Arrow API in v9.0 +.

Sequence of arrow::Field objects describing the columns of a record batch or table data structure

Accessors​

fields : Field[] (readonly)​

Return the list of fields (columns) in the schema.

metadata (readonly)​

The custom key-value metadata, if any. metadata may be null.

dictionaries (readonly)​

TBD - List of dictionaries (each dictionary is associated with a column that is dictionary encoded).

dictionaryFields (readonly)​

TBD - List of fields

Methods​

constructor(fields: Field[], metadata?: Object, dictionaries?: Object, dictionaryFields?: Object)​

Creates a new schema instance.

select(columnNames) : Schema​

Returns a new Schema with the Fields indicated by the column names.