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https://issues.apache.org/jira/browse/SOLR-1706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797829#action_12797829
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Robert Muir commented on SOLR-1706:
-----------------------------------
its not just the concatenation, but also the subword generation.
In the case below, Autocoder should not be emitted, as only numeric subword
generation is turned on.
{code}
public void test128() throws Exception {
assertWdf("word 1234 Super-Duper-XL500-42-Autocoder x'sbd123 a4b3c-",
0,1,0,0,0,0,0,0,0, null,
new String[] { "word", "1234", "42", "Autocoder", "a4b3c" },
new int[] { 0, 5, 28, 31, 50 },
new int[] { 4, 9, 30, 40, 55 },
new int[] { 1, 1, 1, 1, 2 });
}
{code}
> wrong tokens output from WordDelimiterFilter when english possessives are in
> the text
> -------------------------------------------------------------------------------------
>
> Key: SOLR-1706
> URL: https://issues.apache.org/jira/browse/SOLR-1706
> Project: Solr
> Issue Type: Bug
> Components: Schema and Analysis
> Affects Versions: 1.4
> Reporter: Robert Muir
>
> the WordDelimiterFilter english possessive stemming "'s" removal (on by
> default) unfortunately causes strange behavior:
> below you can see that when I have requested to only output numeric
> concatenations (not words), these english possessive stems are still
> sometimes output, ignoring the options i have provided, and even then, in a
> very inconsistent way.
> {code}
> assertWdf("Super-Duper-XL500-42-AutoCoder's", 0,0,0,1,0,0,0,0,1, null,
> new String[] { "42", "AutoCoder" },
> new int[] { 18, 21 },
> new int[] { 20, 30 },
> new int[] { 1, 1 });
> assertWdf("Super-Duper-XL500-42-AutoCoder's-56", 0,0,0,1,0,0,0,0,1, null,
> new String[] { "42", "AutoCoder", "56" },
> new int[] { 18, 21, 33 },
> new int[] { 20, 30, 35 },
> new int[] { 1, 1, 1 });
> assertWdf("Super-Duper-XL500-AB-AutoCoder's", 0,0,0,1,0,0,0,0,1, null,
> new String[] { },
> new int[] { },
> new int[] { },
> new int[] { });
> assertWdf("Super-Duper-XL500-42-AutoCoder's-BC", 0,0,0,1,0,0,0,0,1, null,
> new String[] { "42" },
> new int[] { 18 },
> new int[] { 20 },
> new int[] { 1 });
> {code}
> where assertWdf is
> {code}
> void assertWdf(String text, int generateWordParts, int generateNumberParts,
> int catenateWords, int catenateNumbers, int catenateAll,
> int splitOnCaseChange, int preserveOriginal, int splitOnNumerics,
> int stemEnglishPossessive, CharArraySet protWords, String expected[],
> int startOffsets[], int endOffsets[], String types[], int posIncs[])
> throws IOException {
> TokenStream ts = new WhitespaceTokenizer(new StringReader(text));
> WordDelimiterFilter wdf = new WordDelimiterFilter(ts, generateWordParts,
> generateNumberParts, catenateWords, catenateNumbers, catenateAll,
> splitOnCaseChange, preserveOriginal, splitOnNumerics,
> stemEnglishPossessive, protWords);
> assertTokenStreamContents(wdf, expected, startOffsets, endOffsets, types,
> posIncs);
> }
> {code}
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