nushell/crates/nu-cmd-dataframe/src/dataframe/eager/mod.rs
Jack Wright 8144926dc7
Adding JSON lines file support to dataframes (#9291)
# Description
Provides the ability to read and write [JSON
lines](https://jsonlines.org/) files. This is accomplished by exposing
the support already in Polars.

## Opening a JSON lines file 
<img width="1668" alt="Screenshot 2023-05-25 at 5 25 30 PM"
src="https://github.com/nushell/nushell/assets/56345/3b213c3d-eea1-440a-8425-4ce4b39ab7d1">

## Saving a dataframe to a JSON lines file
<img width="848" alt="Screenshot 2023-05-25 at 5 15 57 PM"
src="https://github.com/nushell/nushell/assets/56345/56089990-e14b-4f01-b676-5abab9333d7e">
2023-05-26 16:32:37 -05:00

107 lines
2.1 KiB
Rust

mod append;
mod columns;
mod drop;
mod drop_duplicates;
mod drop_nulls;
mod dtypes;
mod dummies;
mod filter_with;
mod first;
mod get;
mod last;
mod list;
mod melt;
mod open;
mod query_df;
mod rename;
mod sample;
mod shape;
mod slice;
mod sql_context;
mod sql_expr;
mod summary;
mod take;
mod to_arrow;
mod to_csv;
mod to_df;
mod to_json_lines;
mod to_nu;
mod to_parquet;
mod with_column;
use nu_protocol::engine::StateWorkingSet;
pub use self::open::OpenDataFrame;
pub use append::AppendDF;
pub use columns::ColumnsDF;
pub use drop::DropDF;
pub use drop_duplicates::DropDuplicates;
pub use drop_nulls::DropNulls;
pub use dtypes::DataTypes;
pub use dummies::Dummies;
pub use filter_with::FilterWith;
pub use first::FirstDF;
pub use get::GetDF;
pub use last::LastDF;
pub use list::ListDF;
pub use melt::MeltDF;
pub use query_df::QueryDf;
pub use rename::RenameDF;
pub use sample::SampleDF;
pub use shape::ShapeDF;
pub use slice::SliceDF;
pub use sql_context::SQLContext;
pub use sql_expr::parse_sql_expr;
pub use summary::Summary;
pub use take::TakeDF;
pub use to_arrow::ToArrow;
pub use to_csv::ToCSV;
pub use to_df::ToDataFrame;
pub use to_json_lines::ToJsonLines;
pub use to_nu::ToNu;
pub use to_parquet::ToParquet;
pub use with_column::WithColumn;
pub fn add_eager_decls(working_set: &mut StateWorkingSet) {
macro_rules! bind_command {
( $command:expr ) => {
working_set.add_decl(Box::new($command));
};
( $( $command:expr ),* ) => {
$( working_set.add_decl(Box::new($command)); )*
};
}
// Dataframe commands
bind_command!(
AppendDF,
ColumnsDF,
DataTypes,
Summary,
DropDF,
DropDuplicates,
DropNulls,
Dummies,
FilterWith,
FirstDF,
GetDF,
LastDF,
ListDF,
MeltDF,
OpenDataFrame,
QueryDf,
RenameDF,
SampleDF,
ShapeDF,
SliceDF,
TakeDF,
ToArrow,
ToCSV,
ToDataFrame,
ToNu,
ToParquet,
ToJsonLines,
WithColumn
);
}