mikemccand commented on code in PR #12915:
URL: https://github.com/apache/lucene/pull/12915#discussion_r1426601556
##########
lucene/analysis/kuromoji/src/java/org/apache/lucene/analysis/ja/JapaneseHiraganaUppercaseFilter.java:
##########
@@ -60,15 +60,13 @@ public JapaneseHiraganaUppercaseFilter(TokenStream input) {
@Override
public boolean incrementToken() throws IOException {
if (input.incrementToken()) {
- String term = termAttr.toString();
- char[] src = term.toCharArray();
- char[] result = new char[src.length];
- for (int i = 0; i < src.length; i++) {
- Character c = s2l.get(src[i]);
+ char[] result = new char[termAttr.length()];
Review Comment:
I think this could instead be something like:
```
char[] termBuffer = termAttr.buffer();
int termLength = termAttr.length();
for(int i=0; i<termLength; i++) {
Character c = LETTER_MAPPINGS.get(termBuffer[i]);
if (c != null) {
termBuffer[i] = c;
}
}
return true;
```
I.e. you can just directly manipulate the underlying buffer.
But really this is all just optimizing -- not urgent for the first commit of
this awesome contribution. It can be done in follow-on PRs.
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