Example: Reorder columns
Topic: Data frame
Code
<?php
declare(strict_types=1);
use function Flow\ETL\DSL\{
bool_entry,
compare_entries_by_type_and_name,
data_frame,
datetime_entry,
float_entry,
from_rows,
int_entry,
json_entry,
list_entry,
map_entry,
row,
rows,
str_entry,
struct_element,
struct_entry,
struct_type,
to_stream,
type_float,
type_int,
type_list,
type_map,
type_string,
uuid_entry};
data_frame()
->read(from_rows(rows(
row(
int_entry('int_a', 1),
int_entry('int_b', 1),
float_entry('float_a', 57291 / 100),
float_entry('float_b', 21021 / 100),
bool_entry('bool', false),
bool_entry('bool_a', false),
bool_entry('bool_c', false),
datetime_entry('datetime_d', new DateTimeImmutable('2024-04-01 00:00:00')),
datetime_entry('datetime_z', new DateTimeImmutable('2024-04-01 00:00:00')),
str_entry('string_a', 'string'),
str_entry('string_b', 'string'),
uuid_entry('uuid', '06143adb-3009-45c8-a4f0-c7016f97cab7'),
json_entry('json', ['id' => 1, 'status' => 'NEW']),
list_entry('list', [1, 2, 3], type_list(type_int())),
map_entry('map', [0 => 'zero', 1 => 'one', 2 => 'two'], type_map(type_int(), type_string())),
struct_entry(
'struct',
[
'street' => 'street',
'city' => 'city',
'zip' => 'zip',
'country' => 'country',
'location' => ['lat' => 1.5, 'lon' => 1.5],
],
struct_type([
struct_element('street', type_string()),
struct_element('city', type_string()),
struct_element('zip', type_string()),
struct_element('country', type_string()),
struct_element(
'location',
struct_type([
struct_element('lat', type_float()),
struct_element('lon', type_float()),
])
),
]),
),
)
)))
->reorderEntries(compare_entries_by_type_and_name())
->write(to_stream(__DIR__ . '/output.txt', truncate: false))
->run();
Output
+--------------------------------------+-------+-------+-------+--------+--------+---------+---------+---------------------------+---------------------------+----------+----------+---------+-------------------------+----------------------+----------------------------------------------------------------------------------------------------+
| uuid | int_a | int_b | bool | bool_a | bool_c | float_a | float_b | datetime_d | datetime_z | string_a | string_b | list | json | map | struct |
+--------------------------------------+-------+-------+-------+--------+--------+---------+---------+---------------------------+---------------------------+----------+----------+---------+-------------------------+----------------------+----------------------------------------------------------------------------------------------------+
| 06143adb-3009-45c8-a4f0-c7016f97cab7 | 1 | 1 | false | false | false | 572.91 | 210.21 | 2024-04-01T00:00:00+00:00 | 2024-04-01T00:00:00+00:00 | string | string | [1,2,3] | {"id":1,"status":"NEW"} | ["zero","one","two"] | {"street":"street","city":"city","zip":"zip","country":"country","location":{"lat":1.5,"lon":1.5}} |
+--------------------------------------+-------+-------+-------+--------+--------+---------+---------+---------------------------+---------------------------+----------+----------+---------+-------------------------+----------------------+----------------------------------------------------------------------------------------------------+
1 rows
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