Apache Solr Reference Guide Covering Apache Solr 6.0

decomposition: Valid values are no, canonical, or full. See Oracle Java 8 Collator javadocs for more
information.
A solr.CollationField example:
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ASCII & Decimal Folding Filters
Ascii Folding
This filter converts alphabetic, numeric, and symbolic Unicode characters which are not in the first 127 ASCII
characters (the "Basic Latin" Unicode block) into their ASCII equivalents, if one exists. Only those characters with
reasonable ASCII alternatives are converted.
This can increase recall by causing more matches. On the other hand, it can reduce precision because
language-specific character differences may be lost.
Factory class: solr.ASCIIFoldingFilterFactory
Arguments: None
Example:
In: "Björn Ångström"
Tokenizer to Filter: "Björn", "Ångström"
Out: "Bjorn", "Angstrom"
Decimal Digit Folding
This filter converts any character in the Unicode "Decimal Number" general category ("Nd") into their equivalent
Basic Latin digits (0-9).
This can increase recall by causing more matches. On the other hand, it can reduce precision because
language-specific character differences may be lost.
Factory class: solr.DecimalDigitFilterFactory
Arguments: None
Example:
Apache Solr Reference Guide 6.0
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