I have an example in Solr In Action that uses the PatternReplaceCharFilterFactory and now it doesn't work in 4.7.0. Specifically, the <fieldType> is:
<fieldType name="text_microblog" class="solr.TextField" positionIncrementGap="100"> <analyzer> <charFilter class="solr.PatternReplaceCharFilterFactory" pattern="([a-zA-Z])\1+" replacement="$1$1"/> <tokenizer class="solr.WhitespaceTokenizerFactory"/> <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" splitOnCaseChange="0" splitOnNumerics="0" stemEnglishPossessive="1" preserveOriginal="0" catenateWords="1" generateNumberParts="1" catenateNumbers="0" catenateAll="0" types="wdfftypes.txt"/> <filter class="solr.StopFilterFactory" ignoreCase="true" words="lang/stopwords_en.txt" /> <filter class="solr.LowerCaseFilterFactory"/> <filter class="solr.ASCIIFoldingFilterFactory"/> <filter class="solr.KStemFilterFactory"/> </analyzer> </fieldType> The PatternReplaceCharFilterFactory (PRCF) is used to collapse repeated letters in a term down to a max of 2, such as #yummmm would be #yumm When I run some text through this analyzer using the Analysis form, the output is as if the resulting text is unavailable to the tokenizer. In other words, the only results being displayed in the output on the form is for the PRCF This example stopped working in 4.7.0 and I've verified it worked correctly in 4.6.1. Initially, I thought this might be an issue with the actual analysis, but the analyzer actually works when indexing / querying. Then, looking at the JSON response in the Developer console with Chrome, I see the JSON that comes back includes output for all the components in my chain (see below) ... so looks like a UI issue to me? Anyone have any ideas on what might be going on? If not, I'll create a JIRA. {"responseHeader":{"status":0,"QTime":24},"analysis":{"field_types":{"text_microblog":{"index":["org.apache.lucene.analysis.pattern.PatternReplaceCharFilter","#Yumm :) Drinking a latte at Caffe Grecco in SF's historic North Beach... 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