[SOLR-11859] CloneFieldUpdateProcessorFactory should not add {set=} to content when cloned to multivalued field

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Works for Me
• Affects Version/s: 7.2
• Component/s: UpdateRequestProcessors
• Assignee: Unassigned
• Reporter: Jaap de Jong
• Created: 16/Jan/18 12:41
• Updated: 08/Jun/19 15:10
• Resolved: 17/Jan/18 13:33

Description

I'm using the CloneFieldUpdateProcessorFactory to copy content from all string fields except some predefined fields to a multivalued "text_final" field. This seems to work, however each value value is prepended with "{set=" and appended with "}".

Expected result
Just clone all the original values into the multivalued field without "{set=}".  

In my schema this field is defined as:

<field name="text_final" type="text_nl" indexed="true" stored="true" multiValued="true"/>

The fieldType is defined as:

<fieldType name="text_nl" class="solr.TextField" positionIncrementGap="100">
<analyzer>
<charFilter class="solr.PatternReplaceCharFilterFactory" pattern='>' replacement=' ' />
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="lang/stopwords_nl.txt"
format="snowball"/>
<filter class="solr.HunspellStemFilterFactory"
dictionary="lang/nederlands/nl_NL.dic"
affix="lang/nederlands/nl_NL.aff"
ignoreCase="true"/>
</analyzer>
</fieldType>

In my updateRequestProcessorChain the processor is defined as:

<processor class="solr.CloneFieldUpdateProcessorFactory">
<lst name="source">
<str name="fieldRegex">s_.*</str>
<lst name="exclude">
<str name="fieldName">s_description</str>
<str name="fieldName">s_image_link</str>
<str name="fieldName">s_link</str>
</lst>
</lst>
<str name="dest">text_final</str>
</processor>