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  1. Core Server
  2. SERVER-17809

Case sensitive text queries should match against full tokens instead of stemmed tokens

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    • Type: Icon: Bug Bug
    • Resolution: Won't Fix
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 3.1.0
    • Component/s: Text Search
    • Labels:
    • Fully Compatible
    • ALL
    • Hide 
      load('jstests/libs/fts.js'); // for getIDS

var t = db.fts_case_sensitive;
t.drop();

t.ensureIndex({a: 'text'});
t.insert({_id: 0, a: 'swiftly'});
t.insert({_id: 1, a: 'swiftlY'});  // capital y in the suffix

var res = t.find({$text: {$search: 'swiftly', $caseSensitive: true}});

// only the first result should be returned for the case sensitive query
assert.eq(getIDS(res), [0]);
      Show
      load('jstests/libs/fts.js'); // for getIDS var t = db.fts_case_sensitive; t.drop(); t.ensureIndex({a: 'text'}); t.insert({_id: 0, a: 'swiftly'}); t.insert({_id: 1, a: 'swiftlY'}); // capital y in the suffix var res = t.find({$text: {$search: 'swiftly', $caseSensitive: true}}); // only the first result should be returned for the case sensitive query assert.eq(getIDS(res), [0]);
    • Platform A (10/09/15)

      $text queries with $caseSensitive: true match against stemmed tokens instead of full tokens:

      > var t = db.fts_case_sensitive;

> t.insert({_id: 0, a: 'swiftly'});
WriteResult({ "nInserted" : 1 })

> t.insert({_id: 1, a: 'swiftlY'});  // capital y in the suffix
WriteResult({ "nInserted" : 1 })

> t.find()
{ "_id" : 0, "a" : "swiftly" }
{ "_id" : 1, "a" : "swiftlY" }

> t.find({$text: {$search: 'swiftly', $caseSensitive: true}});
{ "_id" : 0, "a" : "swiftly" }
{ "_id" : 1, "a" : "swiftlY" } // this is an unexpected result because of the capital y

            Assignee:
            mark.benvenuto@mongodb.com Mark Benvenuto
            Reporter:
            kamran.khan Kamran K.
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              Created:
              Updated:
              Resolved: