JIP::DataPath - provides a way to access data elements in a deep, complex and nested data structure.
This document describes JIP::DataPath version 0.01.
0.01
use JIP::DataPath qw(path); path({foo => 42})->get(['foo']); # 42 path({foo => 42})->contains(['foo']); # True my $document = {foo => 42}; if (path($document)->set(['foo'], 100500)) { path($document)->perform('get', ['foo']); # 100500 }
JIP::DataPath implements the following attributes.
my $document = $pointer->document;
Data structure to be processed.
my $data_path = JIP::DataPath->new(document => {foo => 'bar'});
Build new JIP::DataPath object.
# undef JIP::DataPath->new(document => undef)->get([]); # 42 JIP::DataPath->new(document => 42)->get([]); # {foo => 'bar'} JIP::DataPath->new(document => {foo => 'bar'})->get([]); # 'bar' JIP::DataPath->new(document => {foo => 'bar'})->get(['foo']); # 'bar' JIP::DataPath->new(document => ['foo', 'bar'])->get([1]);
Extract value from "document" identified by the given path.
# True JIP::DataPath->new(document => undef)->set([], {foo => undef}); JIP::DataPath->new(document => {foo => undef})->set(['foo'], {bar => undef}); JIP::DataPath->new(document => {foo => {bar => undef}})->set(['foo', 'bar'], []); JIP::DataPath->new(document => {foo => {bar => []}})->set(['foo', 'bar'], [undef]); JIP::DataPath->new(document => {foo => {bar => [undef]}})->set(['foo', 'bar', 0], 42);
Sets the value at the specified path.
# True JIP::DataPath->new(document => undef)->contains([]); JIP::DataPath->new(document => 42)->contains([]); JIP::DataPath->new(document => {foo => 'bar'})->contains([]); JIP::DataPath->new(document => {foo => 'bar'})->contains(['foo']); JIP::DataPath->new(document => ['foo', 'bar'])->contains([1]); # False JIP::DataPath->new(document => {foo => 'bar'})->contains(['wtf']); JIP::DataPath->new(document => ['foo', 'bar'])->contains([42]);
Check if "document" contains a value that can be identified with the given path.
# 42 JIP::DataPath->new(document => 42)->perform('get', []); # True JIP::DataPath->new(document => 42)->perform('set', [], 100500); JIP::DataPath->new(document => 42)->perform('contains', []);
These functions are exported only by request.
use JIP::DataPath; JIP::DataPath::path({foo => 42})->get(['foo']); JIP::DataPath::path({foo => 42})->set(['foo'], 100500); JIP::DataPath::path({foo => 42})->contains(['foo']); JIP::DataPath::path({foo => 42})->perform('contains', ['foo']);
or exported on demand via
use JIP::DataPath qw(path); path({foo => 42})->get(['foo']); path({foo => 42})->set(['foo'], 100500); path({foo => 42})->contains(['foo']); path({foo => 42})->perform('contains', ['foo']);
Alias of JIP::DataPath->new(document => {}). It creates a JIP::DataPath object.
JIP::DataPath->new(document => {})
None.
JIP::DataPath requires no configuration files or environment variables.
Data::Focus, Data::PathSimple, Data::SimplePath
Vladimir Zhavoronkov, <flyweight at yandex.ru>
<flyweight at yandex.ru>
Copyright 2018 Vladimir Zhavoronkov.
This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:
http://www.perlfoundation.org/artistic_license_2_0
Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License. By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license.
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This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement, then this Artistic License to you shall terminate on the date that such litigation is filed.
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To install JIP::DataPath, copy and paste the appropriate command in to your terminal.
cpanm
cpanm JIP::DataPath
CPAN shell
perl -MCPAN -e shell install JIP::DataPath
For more information on module installation, please visit the detailed CPAN module installation guide.