Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping
Just keep one extra facet value hidden; ie request one more than you need to show the current page. If you get it, there are more (show the next button), otherwise there aren't. You can't page arbitrarily deep like this, but you can have a next button reliably enabled or disabled. On 6/1/2011 5:57 PM, Robert Petersen wrote: Yes that is exactly the issue... we're thinking just maybe always have a next button and if you go too far you just get zero results. User gets what the user asks for, and so user could simply back up if desired to where the facet still has values. Could also detect an empty facet results on the front end. You can also only expand one facet only to allow paging only the facet pane and not the whole page using an ajax call. -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 2:30 PM To: solr-user@lucene.apache.org Cc: Robert Petersen Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping How do you know whether to provide a 'next' button, or whether you are the end of your facet list? On 6/1/2011 4:47 PM, Robert Petersen wrote: I think facet.offset allows facet paging nicely by letting you index into the list of facet values. It is working for me... http://wiki.apache.org/solr/SimpleFacetParameters#facet.offset -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 12:41 PM To: solr-user@lucene.apache.org Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping There's no great way to do that. One approach would be using facets, but that will just get you the author names (as stored in fields), and not the documents under it. If you really only want to show the author names, facets could work. One issue with facets though is Solr won't tell you the total number of facet values for your query, so it's tricky to provide next/prev paging through them. There is also a 'field collapsing' feature that I think is not in a released Solr, but may be in the Solr repo. I'm not sure it will quite do what you want either though, although it's related and worth a look. http://wiki.apache.org/solr/FieldCollapsing Another vaguely related thing that is also not yet in a released Solr, is a 'join' function. That could possibly be used to do what you want, although it'd be tricky too. https://issues.apache.org/jira/browse/SOLR-2272 Jonathan On 6/1/2011 2:56 PM, beccax wrote: Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-diff erent-of-search-results-per-page-due-to-pagination-then-grouping-tp30121 68p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping
There's no great way to do that. One approach would be using facets, but that will just get you the author names (as stored in fields), and not the documents under it. If you really only want to show the author names, facets could work. One issue with facets though is Solr won't tell you the total number of facet values for your query, so it's tricky to provide next/prev paging through them. There is also a 'field collapsing' feature that I think is not in a released Solr, but may be in the Solr repo. I'm not sure it will quite do what you want either though, although it's related and worth a look. http://wiki.apache.org/solr/FieldCollapsing Another vaguely related thing that is also not yet in a released Solr, is a 'join' function. That could possibly be used to do what you want, although it'd be tricky too. https://issues.apache.org/jira/browse/SOLR-2272 Jonathan On 6/1/2011 2:56 PM, beccax wrote: Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-different-of-search-results-per-page-due-to-pagination-then-grouping-tp3012168p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
RE: Newbie question: how to deal with different # of search results per page due to pagination then grouping
Don't manually group by author from your results, the list will always be incomplete... use faceting instead to show the authors of the books you have found in your search. http://wiki.apache.org/solr/SolrFacetingOverview -Original Message- From: beccax [mailto:bec...@gmail.com] Sent: Wednesday, June 01, 2011 11:56 AM To: solr-user@lucene.apache.org Subject: Newbie question: how to deal with different # of search results per page due to pagination then grouping Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-diff erent-of-search-results-per-page-due-to-pagination-then-grouping-tp30121 68p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
RE: Newbie question: how to deal with different # of search results per page due to pagination then grouping
I think facet.offset allows facet paging nicely by letting you index into the list of facet values. It is working for me... http://wiki.apache.org/solr/SimpleFacetParameters#facet.offset -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 12:41 PM To: solr-user@lucene.apache.org Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping There's no great way to do that. One approach would be using facets, but that will just get you the author names (as stored in fields), and not the documents under it. If you really only want to show the author names, facets could work. One issue with facets though is Solr won't tell you the total number of facet values for your query, so it's tricky to provide next/prev paging through them. There is also a 'field collapsing' feature that I think is not in a released Solr, but may be in the Solr repo. I'm not sure it will quite do what you want either though, although it's related and worth a look. http://wiki.apache.org/solr/FieldCollapsing Another vaguely related thing that is also not yet in a released Solr, is a 'join' function. That could possibly be used to do what you want, although it'd be tricky too. https://issues.apache.org/jira/browse/SOLR-2272 Jonathan On 6/1/2011 2:56 PM, beccax wrote: Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-diff erent-of-search-results-per-page-due-to-pagination-then-grouping-tp30121 68p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping
How do you know whether to provide a 'next' button, or whether you are the end of your facet list? On 6/1/2011 4:47 PM, Robert Petersen wrote: I think facet.offset allows facet paging nicely by letting you index into the list of facet values. It is working for me... http://wiki.apache.org/solr/SimpleFacetParameters#facet.offset -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 12:41 PM To: solr-user@lucene.apache.org Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping There's no great way to do that. One approach would be using facets, but that will just get you the author names (as stored in fields), and not the documents under it. If you really only want to show the author names, facets could work. One issue with facets though is Solr won't tell you the total number of facet values for your query, so it's tricky to provide next/prev paging through them. There is also a 'field collapsing' feature that I think is not in a released Solr, but may be in the Solr repo. I'm not sure it will quite do what you want either though, although it's related and worth a look. http://wiki.apache.org/solr/FieldCollapsing Another vaguely related thing that is also not yet in a released Solr, is a 'join' function. That could possibly be used to do what you want, although it'd be tricky too. https://issues.apache.org/jira/browse/SOLR-2272 Jonathan On 6/1/2011 2:56 PM, beccax wrote: Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-diff erent-of-search-results-per-page-due-to-pagination-then-grouping-tp30121 68p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
RE: Newbie question: how to deal with different # of search results per page due to pagination then grouping
Yes that is exactly the issue... we're thinking just maybe always have a next button and if you go too far you just get zero results. User gets what the user asks for, and so user could simply back up if desired to where the facet still has values. Could also detect an empty facet results on the front end. You can also only expand one facet only to allow paging only the facet pane and not the whole page using an ajax call. -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 2:30 PM To: solr-user@lucene.apache.org Cc: Robert Petersen Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping How do you know whether to provide a 'next' button, or whether you are the end of your facet list? On 6/1/2011 4:47 PM, Robert Petersen wrote: I think facet.offset allows facet paging nicely by letting you index into the list of facet values. It is working for me... http://wiki.apache.org/solr/SimpleFacetParameters#facet.offset -Original Message- From: Jonathan Rochkind [mailto:rochk...@jhu.edu] Sent: Wednesday, June 01, 2011 12:41 PM To: solr-user@lucene.apache.org Subject: Re: Newbie question: how to deal with different # of search results per page due to pagination then grouping There's no great way to do that. One approach would be using facets, but that will just get you the author names (as stored in fields), and not the documents under it. If you really only want to show the author names, facets could work. One issue with facets though is Solr won't tell you the total number of facet values for your query, so it's tricky to provide next/prev paging through them. There is also a 'field collapsing' feature that I think is not in a released Solr, but may be in the Solr repo. I'm not sure it will quite do what you want either though, although it's related and worth a look. http://wiki.apache.org/solr/FieldCollapsing Another vaguely related thing that is also not yet in a released Solr, is a 'join' function. That could possibly be used to do what you want, although it'd be tricky too. https://issues.apache.org/jira/browse/SOLR-2272 Jonathan On 6/1/2011 2:56 PM, beccax wrote: Apologize if this question has already been raised. I tried searching but couldn't find the relevant posts. We've indexed a bunch of documents by different authors. Then for search results, we'd like to show the authors that have 1 or more documents matching the search keywords. The problem is right now our solr search method first paginates results to 100 documents per page, then we take the results and group by authors. This results in different number of authors per page. (Some authors may only have one matching document and others 5 or 10.) How do we change it to somehow show the same number of authors (say 25) per page? I mean alternatively we could just show all the documents themselves ordered by author, but it's not the user experience we're looking for. Thanks so much. And please let me know if you need more details not provided here. B -- View this message in context: http://lucene.472066.n3.nabble.com/Newbie-question-how-to-deal-with-diff erent-of-search-results-per-page-due-to-pagination-then-grouping-tp30121 68p3012168.html Sent from the Solr - User mailing list archive at Nabble.com.
