-
Notifications
You must be signed in to change notification settings - Fork 1.2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
15 changed files
with
194 additions
and
36 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
|
||
| //! Fork of arrow::io::print to implement custom Binary Array formatting logic. | ||
|
|
||
| // adapted from https://github.com/jorgecarleitao/arrow2/blob/ef7937dfe56033c2cc491482c67587b52cd91554/src/array/display.rs | ||
| // see: https://github.com/jorgecarleitao/arrow2/issues/771 | ||
|
|
||
| use arrow::{array::*, record_batch::RecordBatch}; | ||
|
|
||
| use comfy_table::{Cell, Table}; | ||
|
|
||
| macro_rules! dyn_display { | ||
| ($array:expr, $ty:ty, $expr:expr) => {{ | ||
| let a = $array.as_any().downcast_ref::<$ty>().unwrap(); | ||
| Box::new(move |row: usize| format!("{}", $expr(a.value(row)))) | ||
| }}; | ||
| } | ||
|
|
||
| fn df_get_array_value_display<'a>( | ||
| array: &'a dyn Array, | ||
| ) -> Box<dyn Fn(usize) -> String + 'a> { | ||
| use arrow::datatypes::DataType::*; | ||
| match array.data_type() { | ||
| Binary => dyn_display!(array, BinaryArray<i32>, |x: &[u8]| { | ||
| x.iter().fold("".to_string(), |mut acc, x| { | ||
| acc.push_str(&format!("{:02x}", x)); | ||
| acc | ||
| }) | ||
| }), | ||
| LargeBinary => dyn_display!(array, BinaryArray<i64>, |x: &[u8]| { | ||
| x.iter().fold("".to_string(), |mut acc, x| { | ||
| acc.push_str(&format!("{:02x}", x)); | ||
| acc | ||
| }) | ||
| }), | ||
| List(_) => { | ||
| let f = |x: Box<dyn Array>| { | ||
| let display = df_get_array_value_display(x.as_ref()); | ||
| let string_values = (0..x.len()).map(display).collect::<Vec<String>>(); | ||
| format!("[{}]", string_values.join(", ")) | ||
| }; | ||
| dyn_display!(array, ListArray<i32>, f) | ||
| } | ||
| FixedSizeList(_, _) => { | ||
| let f = |x: Box<dyn Array>| { | ||
| let display = df_get_array_value_display(x.as_ref()); | ||
| let string_values = (0..x.len()).map(display).collect::<Vec<String>>(); | ||
| format!("[{}]", string_values.join(", ")) | ||
| }; | ||
| dyn_display!(array, FixedSizeListArray, f) | ||
| } | ||
| LargeList(_) => { | ||
| let f = |x: Box<dyn Array>| { | ||
| let display = df_get_array_value_display(x.as_ref()); | ||
| let string_values = (0..x.len()).map(display).collect::<Vec<String>>(); | ||
| format!("[{}]", string_values.join(", ")) | ||
| }; | ||
| dyn_display!(array, ListArray<i64>, f) | ||
| } | ||
| Struct(_) => { | ||
| let a = array.as_any().downcast_ref::<StructArray>().unwrap(); | ||
| let displays = a | ||
| .values() | ||
| .iter() | ||
| .map(|x| df_get_array_value_display(x.as_ref())) | ||
| .collect::<Vec<_>>(); | ||
| Box::new(move |row: usize| { | ||
| let mut string = displays | ||
| .iter() | ||
| .zip(a.fields().iter().map(|f| f.name())) | ||
| .map(|(f, name)| (f(row), name)) | ||
| .fold("{".to_string(), |mut acc, (v, name)| { | ||
| acc.push_str(&format!("{}: {}, ", name, v)); | ||
| acc | ||
| }); | ||
| if string.len() > 1 { | ||
| // remove last ", " | ||
| string.pop(); | ||
| string.pop(); | ||
| } | ||
| string.push('}'); | ||
| string | ||
| }) | ||
| } | ||
| _ => get_display(array), | ||
| } | ||
| } | ||
|
|
||
| /// Returns a function of index returning the string representation of the item of `array`. | ||
| /// This outputs an empty string on nulls. | ||
| pub fn df_get_display<'a>(array: &'a dyn Array) -> Box<dyn Fn(usize) -> String + 'a> { | ||
| let value_display = df_get_array_value_display(array); | ||
| Box::new(move |row| { | ||
| if array.is_null(row) { | ||
| "".to_string() | ||
| } else { | ||
| value_display(row) | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| /// Convert a series of record batches into a String | ||
| pub fn write(results: &[RecordBatch]) -> String { | ||
| let mut table = Table::new(); | ||
| table.load_preset("||--+-++| ++++++"); | ||
|
|
||
| if results.is_empty() { | ||
| return table.to_string(); | ||
| } | ||
|
|
||
| let schema = results[0].schema(); | ||
|
|
||
| let mut header = Vec::new(); | ||
| for field in schema.fields() { | ||
| header.push(Cell::new(field.name())); | ||
| } | ||
| table.set_header(header); | ||
|
|
||
| for batch in results { | ||
| let displayes = batch | ||
| .columns() | ||
| .iter() | ||
| .map(|array| df_get_display(array.as_ref())) | ||
| .collect::<Vec<_>>(); | ||
|
|
||
| for row in 0..batch.num_rows() { | ||
| let mut cells = Vec::new(); | ||
| (0..batch.num_columns()).for_each(|col| { | ||
| let string = displayes[col](row); | ||
| cells.push(Cell::new(&string)); | ||
| }); | ||
| table.add_row(cells); | ||
| } | ||
| } | ||
| table.to_string() | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.