[ https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martijn van Groningen updated SOLR-236: --------------------------------------- Attachment: field-collapse-5.patch I have updated the field collapse patch and made the following changes: # Refactored the collapse code into a strategy pattern. The two distinct manners of collapsing are now in two different classes, which in my understanding makes the code cleaner and easier to understand. I have removed the {{CollapseFilter}} and created a {{DocumentCollapser}} which is an interface. The {{DocumentCollapser}} has two concrete implementation the {{AdjacentDocumentCollapser}} and the {{NonAdjacentDocumentCollapser}}. Both implementation share the same abstract base class {{AbstractDocumentCollapser}} that has fields and methods that are common in both concrete implementation. # Removed deprecated Lucene methods in the {{PredefinedScorer}}. # Fixed a normal field collapse bug. Filter queries were handled as normal queries (were added together via a boolean query), and thus were also used for scoring. # Added more unit and integration tests, including two tests that tests facets in combination with field collapsing. These tests test the collapse before collapsing and after collapsing. This patch only works with the Solr 1.4-dev from revision 804700 and later. > Field collapsing > ---------------- > > Key: SOLR-236 > URL: https://issues.apache.org/jira/browse/SOLR-236 > Project: Solr > Issue Type: New Feature > Components: search > Affects Versions: 1.3 > Reporter: Emmanuel Keller > Fix For: 1.5 > > Attachments: collapsing-patch-to-1.3.0-dieter.patch, > collapsing-patch-to-1.3.0-ivan.patch, collapsing-patch-to-1.3.0-ivan_2.patch, > collapsing-patch-to-1.3.0-ivan_3.patch, field-collapse-3.patch, > field-collapse-4-with-solrj.patch, field-collapse-5.patch, > field-collapse-solr-236-2.patch, field-collapse-solr-236.patch, > field-collapsing-extended-592129.patch, field_collapsing_1.1.0.patch, > field_collapsing_1.3.patch, field_collapsing_dsteigerwald.diff, > field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff, > SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch, > SOLR-236-FieldCollapsing.patch, solr-236.patch, SOLR-236_collapsing.patch, > SOLR-236_collapsing.patch > > > This patch include a new feature called "Field collapsing". > "Used in order to collapse a group of results with similar value for a given > field to a single entry in the result set. Site collapsing is a special case > of this, where all results for a given web site is collapsed into one or two > entries in the result set, typically with an associated "more documents from > this site" link. See also Duplicate detection." > http://www.fastsearch.com/glossary.aspx?m=48&amid=299 > The implementation add 3 new query parameters (SolrParams): > "collapse.field" to choose the field used to group results > "collapse.type" normal (default value) or adjacent > "collapse.max" to select how many continuous results are allowed before > collapsing > TODO (in progress): > - More documentation (on source code) > - Test cases > Two patches: > - "field_collapsing.patch" for current development version > - "field_collapsing_1.1.0.patch" for Solr-1.1.0 > P.S.: Feedback and misspelling correction are welcome ;-) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.