I had a look and can find the content in the old branch for 8.7 https://github.com/apache/lucene-solr/blob/branch_8_7/solr/solr-ref-guide/src/streaming-expressions.adoc but not elsewhere. Did you find documentation of the REST api such as 'add-expressible' anywhere in the old guides?
Jan > 14. nov. 2024 kl. 09:53 skrev Jan Høydahl <jan....@cominvent.com>: > > Thanks. > > You may find some assistance in contributing here > https://github.com/apache/solr/blob/main/dev-docs/how-to-contribute.adoc and > here https://github.com/apache/solr/tree/main/dev-docs/ref-guide > Ask here for help. And the Pull Request doesn't need to be perfect, it can be > polished during review. > > Jan > >> 13. nov. 2024 kl. 22:47 skrev Christine Feldmann >> <cfeldm...@proofpoint.com.INVALID>: >> >> I haven’t yet contributed to the project but I should be able to figure that >> out. I’ll get educated on the process and see if I can make it happen. >> Thanks! >> >> From: Jan Høydahl <jan....@cominvent.com <mailto:jan....@cominvent.com>> >> Reply-To: "users@solr.apache.org <mailto:users@solr.apache.org>" >> <users@solr.apache.org <mailto:users@solr.apache.org>> >> Date: Wednesday, November 13, 2024 at 4:22 PM >> To: "users@solr.apache.org <mailto:users@solr.apache.org>" >> <users@solr.apache.org <mailto:users@solr.apache.org>> >> Subject: Re: Does lack of documentation indicate lack of support or just >> lack of documentation? >> >> Never heard of such intent, likely a miss? Would you be willing to produce a >> Pull Request for bringing the content back? Jan Høydahl > On 13 Nov 2024, at >> 22: 03, Christine Feldmann <cfeldmann@ proofpoint. com. invalid> wrote: > > >> >> >> Never heard of such intent, likely a miss? Would you be willing to produce a >> Pull Request for bringing the content back? >> >> >> >> Jan Høydahl >> >> >> >>> On 13 Nov 2024, at 22:03, Christine Feldmann >>> <cfeldm...@proofpoint.com.invalid> wrote: >> >>> >> >>> Looking for opinions here from those of you that know Solr best… >> >>> >> >>> A change was pushed to do a major revision of the Streaming Expressions >>> guide almost 4 years ago in version 8.8: >>> SOLR-13105<https://urldefense.com/v2/url?u=https-3A__issues.apache.org_jira_browse_SOLR-2D13105&d=DwIFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=Z5eBKEaiuUFNG8HpjSz8IMDVdE51EhIEeAVWCJN74gY&m=SO3LQE6JmrHvOEeReChQNGw6Wr-qxiC6a0g-DZjNQc_dQi6bcMN1mBa8Y-RukmAd&s=wevHDVx3HmSX0XVNlxdqDZ14vY_Xnlp5kOtE2lQBv28&e=> >>> A visual guide to Solr Math Expressions and Streaming Expressions >> >>> >> >>> In this change, the following section was removed: >> >>> >> >>> “Adding Custom Expressions >> >>> Creating your own custom expressions can be easily done by implementing the >>> Expressible<https://urldefense.com/v2/url?u=https-3A__lucene.apache.org_solr_8-5F5-5F0_solr-2Dsolrj_org_apache_solr_client_solrj_io_stream_expr_Expressible.html&d=DwIFaQ&c=Vxt5e0Osvvt2gflwSlsJ5DmPGcPvTRKLJyp031rXjhg&r=Z5eBKEaiuUFNG8HpjSz8IMDVdE51EhIEeAVWCJN74gY&m=SO3LQE6JmrHvOEeReChQNGw6Wr-qxiC6a0g-DZjNQc_dQi6bcMN1mBa8Y-RukmAd&s=X7MJTUSRrRYq0r18cEYkDMfZo-D_QXXClnhoU0XZqkA&e=> >>> interface. To add a custom expression to the list of known mappings for >>> the /stream and /graph handlers, you just need to declare it as a plugin in >>> solrconfig.xml via: >> >>> <expressible name="custom" class="org.example.CustomStreamingExpression"/>” >> >>> >> >>> There was no mention of deprecating the feature or removing this section. >>> Given the massive size of the diff, I wonder if it was an inadvertent >>> removal. >> >>> >> >>> The feature works. There’s no deprecation of this feature mentioned in any >>> of the Solr docs since it was removed from the guide without explanation. >>> The code itself is not deprecated. >> >>> >> >>> The Config API doc still includes >>> add-expressible/update-expressible/delete-expressible >> >>> >> >>> There is concern in my organization that this feature could be removed at >>> any time without warning because it didn’t make it into the revision of the >>> guide. >> >>> >> >>> Can anyone provide an opinion on how likely that is to happen? >> >>> >> >>> If any of the authors of the guide update are reading, can you comment on >>> why that section was removed? >> >>> >> >>> Thanks in advance, >> >>> Christine >