=encoding utf8

=head1 NAME

jslt - JSON query and transformation

=head1 SYNOPSIS

jslt I<transform.jslt> I<input.json>

=head1 DESCRIPTION

JSLT is a complete query and transformation language for JSON. The language
design is inspired by jq, XPath, and XQuery.

JSLT can be used as:

=over

=item *
a query language to extract values from JSON (.foo.bar[0]),

=item *

a filter/check language to test JSON objects (starts-with(.foo.bar[0], "http://")),

=item *
a transformation language to convert between JSON formats.

=back

Here is an example transform:

	{
		"time": round(parse-time(.published, "yyyy-MM-dd'T'HH:mm:ssX") * 1000),
		"device_manufacturer": .device.manufacturer,
		"device_model": .device.model,
		"language": .device.acceptLanguage,
		"os_name": .device.osType,
		"os_version": .device.osVersion,
		"platform": .device.platformType,
		"user_properties": {
			"is_logged_in" : boolean(.actor."spt:userId")
		}
	}

=head1 SEE ALSO

L<Project page on GitHub|https://github.com/schibsted/jslt>.

=head1 LICENSE

Copyright (c) 2018 Schibsted Marketplaces Products & Technology AS

Licensed under the Apache License, Version 2.0 (the "License").

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.