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Respect ignoreCase flag in CommonGramsFilterFactory #781

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merged 3 commits into from
Nov 11, 2024
Merged

Respect ignoreCase flag in CommonGramsFilterFactory #781

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e603350
Respect ignoreCase flag in CommonGramsFilterFactory
chenhh021 Dec 12, 2022
9ee498d
Add LUCENENET-specific backport comment
paulirwin Oct 28, 2024
7d62449
Use GetType instead of typeof for resource loader
paulirwin Nov 11, 2024
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7 changes: 4 additions & 3 deletions src/Lucene.Net.Analysis.Common/Analysis/CommonGrams/CommonGramsFilterFactory.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ namespace Lucene.Net.Analysis.CommonGrams
/// </summary>
public class CommonGramsFilterFactory : TokenFilterFactory, IResourceLoaderAware
{
// TODO: shared base class for Stop/Keep/CommonGrams?
// TODO: shared base class for Stop/Keep/CommonGrams?
private CharArraySet commonWords;
private readonly string commonWordFiles;
private readonly string format;
Expand Down Expand Up @@ -71,7 +71,8 @@ public virtual void Inform(IResourceLoader loader)
}
else
{
commonWords = StopAnalyzer.ENGLISH_STOP_WORDS_SET;
// LUCENENET-specific: backported ignoreCase fix from Lucene 8.10.0 (lucene#188, LUCENE-10008)
commonWords = new CharArraySet(m_luceneMatchVersion, StopAnalyzer.ENGLISH_STOP_WORDS_SET, ignoreCase);
}
}

Expand All @@ -85,4 +86,4 @@ public override TokenStream Create(TokenStream input)
return commonGrams;
}
}
}
}
22 changes: 20 additions & 2 deletions src/Lucene.Net.Tests.Analysis.Common/Analysis/Commongrams/TestCommonGramsFilterFactory.cs
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Expand Up @@ -28,7 +28,7 @@ namespace Lucene.Net.Analysis.CommonGrams
/// Tests pretty much copied from StopFilterFactoryTest We use the test files
/// used by the StopFilterFactoryTest TODO: consider creating separate test files
/// so this won't break if stop filter test files change
///
///
/// </summary>
public class TestCommonGramsFilterFactory : BaseTokenStreamFactoryTestCase
{
Expand Down Expand Up @@ -79,6 +79,24 @@ public virtual void TestDefaults()
AssertTokenStreamContents(stream, new string[] { "testing", "testing_the", "the", "the_factory", "factory" });
}

// LUCENENET-specific: backported ignoreCase fix from Lucene 8.10.0 (lucene#188, LUCENE-10008)
[Test]
public void TestIgnoreCase()
{
IResourceLoader loader = new ClasspathResourceLoader(GetType());
CommonGramsFilterFactory factory =
(CommonGramsFilterFactory)
TokenFilterFactory("CommonGrams", TEST_VERSION_CURRENT, loader, "ignoreCase", "true");
CharArraySet words = factory.CommonWords;
assertTrue("words is null and it shouldn't be", words != null);
assertTrue(words.contains("the"));
assertTrue(words.contains("The"));
Tokenizer tokenizer = new MockTokenizer(new StringReader("testing The factory"),MockTokenizer.WHITESPACE, false);
TokenStream stream = factory.Create(tokenizer);
AssertTokenStreamContents(
stream, new string[] {"testing", "testing_The", "The", "The_factory", "factory"});
}

/// <summary>
/// Test that bogus arguments result in exception </summary>
[Test]
Expand All @@ -95,4 +113,4 @@ public virtual void TestBogusArguments()
}
}
}
}
}
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