timatbw commented on code in PR #2742:
URL: https://github.com/apache/solr/pull/2742#discussion_r1808367008
##########
solr/core/src/java/org/apache/solr/search/facet/FacetParser.java:
##########
@@ -138,21 +139,30 @@ public Object parseFacetOrStat(String key, Object o)
throws SyntaxError {
return parseFacetOrStat(key, type, args);
}
+ public interface ParseHandler {
+ Object doParse(FacetParser<?> parent, String key, Object args) throws
SyntaxError;
+ }
+
+ private static final Map<String, ParseHandler> REGISTERED_TYPES = new
ConcurrentHashMap<>();
+
+ static {
+ ParseHandler fieldParser = (p, k, a) -> new FacetFieldParser(p,
k).parse(a);
+ REGISTERED_TYPES.put("field", fieldParser);
+ REGISTERED_TYPES.put("terms", fieldParser);
+ REGISTERED_TYPES.put("query", (p, k, a) -> new FacetQueryParser(p,
k).parse(a));
+ REGISTERED_TYPES.put("range", (p, k, a) -> new FacetRangeParser(p,
k).parse(a));
+ REGISTERED_TYPES.put("heatmap", (p, k, a) -> new FacetHeatmap.Parser(p,
k).parse(a));
+ REGISTERED_TYPES.put("func", (p, k, a) -> p.parseStat(k, a));
+ }
+
+ public static void registerParseHandler(String type, ParseHandler
parseHandler) {
Review Comment:
Although the 'standard set' of registered types in the static block above
probably is appropriate as those are built-in and common to all SolrCores.
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