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Stefan Hornburg (Racke)
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NAME

Interchange::Search::Solr -- Solr query encapsulation

VERSION

Version 0.14

DESCRIPTION

Exposes Solr search API in a programmer-friendly way.

SYNOPSIS

Quick summary of what the module does.

Perhaps a little code snippet.

    use Interchange::Search::Solr;
    my $solr = Interchange::Search::Solr->new(solr_url => $url);
    $solr->rows(10);
    $solr->start(0);
    $solr->search('shirts');
    $results = $solr->results;

ACCESSORS

solr_url

Url of the solr instance. Read-only.

input_encoding [DEPRECATED]

Assume the urls to be in this encoding, so decode it before parsing it. This is basically a (probably bugged) workaround when you have all the shop in latin1. If the search keep crashing on non-ascii characters, try to set this to iso-8859-1.

rows

Number of results to return. Read-write (so you can reuse the object).

page_scope

The number of paging items for the paginator

search_fields

An arrayref with the indexed fields to search. Defaults to:

  [qw/sku name description/]

You can add boost to fields appending a float with a caret.

  [qw/ sku^5.0 name^1.0 description^0.4 /]

return_fields

An arrayref of indexed fields to return. All by default.

facets

A string or an arrayref with the fields which will generate a facet. Defaults to

 [qw/suchbegriffe manufacturer/]

start

Start of pagination. Read-write.

page

Current page. Read-write.

filters

An hashref with the filters. E.g.

 {
  suchbegriffe => [qw/xxxxx yyyy/],
  manufacturer => [qw/pikeur/],
 }

The keys of the hashref, to have any effect, must be one of the facets.

response

Read-only accessor to the response object of the current search.

facets_found

After a search, the structure with the facets can be retrieved with this accessor, with this structure:

 {
   field => [ { name => "name", count => 11 }, { name => "name", count => 9 }, ...  ],
   field2 => [ { name => "name", count => 7 }, { name => "name", count => 6 }, ...  ],
   ...
 }

Each hashref in each field's arrayref has the following keys:

name

The name to display

count

The count of item

query_url

The url fragment to toggle this filter.

active

True if currently in use (to be used for, e.g., checkboxes)

search_string

Debug only. The search string produced by the query.

search_terms

The terms used for the current search.

search_structure

The perl data structure used for the current search. It's passed to Webservice::Solr::Query for stringification.

sorting

The field used to sort the result (optional and defaults to score, as per Solr doc).

You can set it to a scalar with a field name or instead you can use the SQL::Abstract syntax (all the cases documented there are supported). E.g.

 $solr->sorting([{ -asc => 'created_date' }, {-desc => [qw/updated_date sku/] }]);

If you pass a reference, the sorting_direction setting is ignored.

sorting_direction

The direction used by the sorting, when sorting is specified and is a plain scalar. Default to 'desc'.

wild_matching

By default, a search term produce a query with a wildcard appended. So searching for 1234 will query 1234*. With this option set to true, a wildcard is prepended as well, querying for *1234* instead).

stop_words_langs

The languages for which we should build the stop word list. It defaults to:

 [ 'en' ]

New in 0.10. To revert to the old behaviour (no filtering of stopwords), pass an empty arrayref.

min_chars

Minimum characters for filtering the search terms. Default to 3.

New in 0.10. To revert to the old behaviour, set it to 0.

By default, empty searches are not executed. You can permit them setting this accessor to 1. The module will reset it to 0 when the search is executed.

INTERNAL ACCESSORS

solr_object

The WebService::Solr instance.

builder_object(\@terms, \%filters, $page)

Creates Interchange::Search::Solr::Builder instance.

METHODS

search( [ $string_or$structure ] ])

Run a search and return a WebService::Solr::Response object.

The method accept zero or one argument.

With no arguments, run a full wildcard search.

With one argument, if it's a string, run the search against all the indexed fields. If it's a structure, build a query for it. The syntax of the structure is described at WebService::Solr::Query.

After calling this method you can inspect the response using the following methods:

results

Returns reference to list of results, each result is a hash reference.

skus_found

Returns just a plain list of skus.

num_found

Return the number of items found

has_more

Return true if there are more pages

execute_query($query)

Accept either a raw string with the query or a WebService::Solr::Query object and run the query against the Solr service.

If no query is provided, a wildcard search is performed.

construct_params

Constructs parameters for the search.

maintainer_update($mode)

Perform a maintainer update and return a WebService::Solr::Response object.

reset_object

Reset the leftovers of a possible previous search.

search_from_url($url)

Parse the url provided and do the search.

add_terms_to_url($url, $string)

Parse the url, and return a new one with the additional words added. The page is discarded, while the filters are retained.

current_search_to_url

Return the url for the current search.

paginator

Return an hashref suitable to be turned into a paginator, undef if there is no need for a paginator.

Be careful that a defined empty string in the first/last/next/previous keys is perfectly legit and points to an unfiltered search which will return all the items, so concatenating it to the prefix is perfectly fine (e.g. "products/" . ''). When rendering this structure to HTML, just check if the value is defined, not if it's true.

The structure looks like this:

 {
   first => 'words/bla' || undef,
   first_page => 1 || undef,
   last  => 'words/bla/page/5' || undef,
   last_page => 5 || undef,
   next => 'words/bla/page/5' || undef,
   next_page => 5 || undef
   previous => 'words/bla/page/3' || undef,
   previous_page => 3 || undef,
   pages => [
             {
              name => 1,
              url => 'words/bla/page/1',
             },
             {
              name => 2,
              url => 'words/bla/page/2',
             },
             {
              name => 3,
              url => 'words/bla/page/3',
             },
             {
              name => 4,
              url => 'words/bla/page/4',
              current => 1,
             },
             {
              name => 5,
              url => 'words/bla/page/5',
             },
            ]
   total_pages => 5
 }

terms_found

Returns an hashref suitable to build a widget with the terms used and the links to toggle them. Return undef if no terms were used in the search.

The structure looks like this:

 {
  reset => '',
  terms => [
            { term => 'first', url => 'words/second' },
            { term => 'second', url => 'words/first' },
           ],
 }

See also:

Which return the reset link

Which returns a list of hashrefs with uri and label for each word to remove.

version

Return the version of this module.

Return a list of hashrefs with uri and label suitable to compose a breadcrumb for the current search.

If the breadcrumb points to a facet, the facet name is stored in the facet key.

AUTHOR

Marco Pessotto, <melmothx at gmail.com>

BUGS

Please report any bugs or feature requests to https://github.com/interchange/Interchange-Search-Solr/issues.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc Interchange::Search::Solr

You can also look for information at:

ACKNOWLEDGEMENTS

Mohammad S Anwar (GH #14).

LICENSE AND COPYRIGHT

Copyright 2014-2016 Marco Pessotto.

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.

If your Modified Version has been derived from a Modified Version made by someone other than you, you are nevertheless required to ensure that your Modified Version complies with the requirements of this license.

This license does not grant you the right to use any trademark, service mark, tradename, or logo of the Copyright Holder.

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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