You're in XML so you must escape it properly with & etc.
> Hi:
>
> I am using the solr.PatternReplaceFilterFactory with pattern as follows to
> escape ampersand and $ signs:
>
> <filter class="solr.PatternReplaceFilterFactory" pattern="(&)"
> replacement="" />
>
> I am getting error due to embedded ampersand
>
> [Fatal Error] schema.xml:82:71: The entity name must immediately follow the
> '&' in the entity reference.
> Exception in thread "main" org.xml.sax.SAXParseException: The entity name
> must immediately follow the '&' in the entity reference.
> at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
>
>
> Is there anyway to make it work ?
>
> Appreciate your help.
>
> Thanks.
