Edwin Yeo Zheng Lin created SOLR-13242:
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Summary: RegexReplaceProcessorFactory not making accurate
replacement
Key: SOLR-13242
URL: https://issues.apache.org/jira/browse/SOLR-13242
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: 7.6
Reporter: Edwin Yeo Zheng Lin
We are using the RegexReplaceProcessorFactory with the following configuration
<processor class="solr.RegexReplaceProcessorFactory">
<str name="fieldName">content</str>
<str name="pattern">(\s*\n)\{2,}</str>
<str name="replacement"><br><br></str>
</processor>
The regex pattern of (\s*\n)\{2,} is working perfectly in
[regex101.com|http://regex101.com/], in which all the \n will be replaced by
only two <br>
However, in Solr, there are cases (in Example 2 and 3 below) that has four <br>
in a row. This should not be the case, as we have already set it to replace by
two <br> regardless of how many \n are there in a row.
Example 1: The sentence that the above regex pattern is working correctly
*Original content in EML file:*
Dear Sir,
I am terminating
*Original content:* Dear Sir, \n\n \n \n\n I am terminating
*Index content:* Dear Sir, <br><br>I am terminating
Example 2: The sentence that the above regex pattern is partially working (as
you can see, instead of 2 <br>, there are 4 <br>)
*Original content in EML file:*
_exalted_
_Psalm 89:17_
3 Choa Chu Kang Avenue 4
*Original content:* exalted \n \n\n Psalm 89:17 \n\n \n\n 3 Choa Chu
Kang Avenue 4, Singapore
*Index content:* exalted <br><br>Psalm 89:17 <br><br> <br><br>3 Choa Chu
Kang Avenue 4, Singapore
Example 3: The sentence that the above regex pattern is partially working (as
you can see, instead of 2 <br>, there are 4 <br>)
*Original content in EML file:*
[http://www.concordpri.moe.edu.sg/]
On Tue, Dec 18, 2018 at 10:07 AM
*Original content:* [http://www.concordpri.moe.edu.sg/] \n\n \n\n \n \n\n
\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n\n \n\n\n On Tue, Dec 18, 2018 at
10:07 AM
*Index content:* [http://www.concordpri.moe.edu.sg/] <br><br> <br><br>On
Tue, Dec 18, 2018 at 10:07 AM
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