[optimise] Use smaller and unordered Sets

Author: adamretter

extensions/indexes/lucene/src/main/java/org/exist/indexing/lucene/LuceneConfig.java

@@ -343,7 +343,7 @@ protected void parseConfig(final NodeList configNodes, final Map<String, String>
                                 Element elem = (Element) node;
                                 QName qname = LuceneIndexConfig.parseQName(elem, namespaces);
                                 if (inlineNodes == null) {
-                                    inlineNodes = new TreeSet<>();
+                                    inlineNodes = new HashSet<>(8);
                                 }
                                 inlineNodes.add(qname);
                                 break;
@@ -352,7 +352,7 @@ protected void parseConfig(final NodeList configNodes, final Map<String, String>
                                 Element elem = (Element) node;
                                 QName qname = LuceneIndexConfig.parseQName(elem, namespaces);
                                 if (ignoreNodes == null) {
-                                    ignoreNodes = new TreeSet<>();
+                                    ignoreNodes = new HashSet<>(8);
                                 }
                                 ignoreNodes.add(qname);
                                 break;