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https://issues.apache.org/jira/browse/LUCENE-8047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16248089#comment-16248089
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Mike Drob commented on LUCENE-8047:
-----------------------------------
Thanks for the clarification, Uwe!
> Comparison of String objects using == or !=
> -------------------------------------------
>
> Key: LUCENE-8047
> URL: https://issues.apache.org/jira/browse/LUCENE-8047
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 7.0.1
> Environment: Ubuntu 14.04.5 LTS
> Reporter: song
> Priority: Minor
> Labels: performance
>
> My tool has scanned the whole codebase of Lucene and found there are eight
> practice issues of string comparison, in which strings are compared by using
> ==/!= instead of equals( ).
> analysis/common/src/java/org/apache/lucene/analysis/hunspell/Dictionary.java
> {code:java}
> conditionPattern == SUFFIX_CONDITION_REGEX_PATTERN
> {code}
> analysis/common/src/java/org/apache/lucene/analysis/cjk/CJKBigramFilter.java
> {code:java}
> if (type == doHan || type == doHiragana || type == doKatakana || type ==
> doHangul) {
> {code}
> analysis/common/src/java/org/apache/lucene/analysis/standard/ClassicFilter.java
> {code:java}
> if (type == APOSTROPHE_TYPE &&...){
> } else if (type == ACRONYM_TYPE) {
> {code}
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