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From "J.L. Hill (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SOLR-2412) Multipath hierarchical faceting
Date Fri, 04 Apr 2014 21:39:15 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13960116#comment-13960116
] 

J.L. Hill edited comment on SOLR-2412 at 4/4/14 9:38 PM:
---------------------------------------------------------

Any suggestions on parsing the output? 
The hierarchical faceting seems to be working as described, but in my test 3-level hierarchy,
converting the query xml  to a php array, it comes out being 13-levels deep. Parsing is complicated
by the text strings of facet field being keys in the array. I have built a basic recursive
function to parse the output, but after three days of trying, I am thinking there must be
a better way to my desired result, which would be like a common html <ul> tree display.
For a failed example of what I am trying:

Any suggestions appreciated.



was (Author: hill):
Any suggestions on parsing the output? 
The hierarchical faceting seems to be working as described, but in my test 3-level hierarchy,
converting the query xml  to a php array, it comes out being 13-levels deep. Parsing is complicated
by the text strings of facet field being keys in the array. I have been trying to build a
recursive function to parse the output, but after three days of trying, I am thinking there
must be a better way to my desired result, which would be like a common html <ul> tree
display. For a failed example of what I am trying:

function facetTree($array, $tree="") {

    $notToTree = array('recursivecount', 'potentialtags', 'totaltags', 'count', 'level', 'sub');
  
    $tree .= "<ul>";
    foreach($array as $k=>$v) {
        if(!in_array($k, $notToTree)) { $tree .= '<li>'.$k."</li>"; }
        if(is_array($v)) {
            $tree .= facetTree($v, $tree);
        }
    }
    $tree .= "</ul>";
    return $tree;
}

Any suggestions appreciated.


> Multipath hierarchical faceting
> -------------------------------
>
>                 Key: SOLR-2412
>                 URL: https://issues.apache.org/jira/browse/SOLR-2412
>             Project: Solr
>          Issue Type: New Feature
>          Components: SearchComponents - other
>    Affects Versions: 4.0
>         Environment: Fast IO when huge hierarchies are used
>            Reporter: Toke Eskildsen
>              Labels: contrib, patch
>         Attachments: SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch,
SOLR-2412.patch, SOLR-2412.patch, SOLR-2412.patch
>
>
> Hierarchical faceting with slow startup, low memory overhead and fast response. Distinguishing
features as compared to SOLR-64 and SOLR-792 are
>   * Multiple paths per document
>   * Query-time analysis of the facet-field; no special requirements for indexing besides
retaining separator characters in the terms used for faceting
>   * Optional custom sorting of tag values
>   * Recursive counting of references to tags at all levels of the output
> This is a shell around LUCENE-2369, making it work with the Solr API. The underlying
principle is to reference terms by their ordinals and create an index wide documents to tags
map, augmented with a compressed representation of hierarchical levels.



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