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https://issues.apache.org/jira/browse/SOLR-99?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12463702
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Yonik Seeley commented on SOLR-99:
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The number was there because I originally thought about allowing a chain of
sorts to narrow results, so you could do things like:
give me TVs with a 50" screen or bigger, then take the bottom 50% by weight,
then take the bottom 50% by depth, then give me the top 10 by review rating.
expressible by the following syntax:
inches:[50 TO *]; weight bottom 50%; depth bottom 50%; rating top 10
But I never really got around to implementing that :-)
Related bugs: https://issues.apache.org/jira/browse/SOLR-9
> Allow default sort order
> ------------------------
>
> Key: SOLR-99
> URL: https://issues.apache.org/jira/browse/SOLR-99
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 1.2
> Reporter: Ryan McKinley
> Priority: Minor
> Fix For: 1.2
>
> Attachments: DefaultSortOrder.patch, DefaultSortOrder.patch
>
>
> The current search throws an "ArrayIndexOutOfBoundsException" if you specify
> a sort field but do not include an order. This is anoying and difficult to
> debug (when you are starting)
> Here is a patch to avoid the exception and use the default sort order if you
> only specify a field. I'm not sure the 'null' case was even possible in the
> current code:
> Index: QueryParsing.java
> ===================================================================
> --- QueryParsing.java (revision 494681)
> +++ QueryParsing.java (working copy)
> @@ -186,13 +186,12 @@
> }
>
> // get the direction of the sort
> - str=parts[pos];
> - if ("top".equals(str) || "desc".equals(str)) {
> - top=true;
> - } else if ("bottom".equals(str) || "asc".equals(str)) {
> - top=false;
> - } else {
> - return null; // must not be a sort command
> + // by default, top is true, only change it if it is "bottom" or "asc"
> + if( parts.length > pos ) {
> + str=parts[pos];
> + if ("bottom".equals(str) || "asc".equals(str)) {
> + top=false;
> + }
> }
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