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ASF GitHub Bot logged work on LANG-1542: ---------------------------------------- Author: ASF GitHub Bot Created on: 16/May/20 13:47 Start Date: 16/May/20 13:47 Worklog Time Spent: 10m Work Description: TranNgocKhoa commented on a change in pull request #530: URL: https://github.com/apache/commons-lang/pull/530#discussion_r426155133 ########## File path: src/main/java/org/apache/commons/lang3/builder/ToStringStyle.java ########## @@ -635,6 +635,14 @@ protected void appendDetail(final StringBuffer buffer, final String fieldName, f * {@code toString}, not {@code null} */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final Collection<?> coll) { + if (coll != null && !coll.isEmpty()) { + coll.stream().findFirst() + .map(Object::getClass) + .filter(Class::isEnum) Review comment: @garydgregory @swarajsaaj I added some code following your comments. Please take a look. Thank you! ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 434070) Time Spent: 1h (was: 50m) > ToStringBuilder.reflectionToString - Wrong JSON format when object has a List > of Enum > ------------------------------------------------------------------------------------- > > Key: LANG-1542 > URL: https://issues.apache.org/jira/browse/LANG-1542 > Project: Commons Lang > Issue Type: Bug > Components: lang.* > Affects Versions: 3.10 > Environment: Open JDK 1.8 > Reporter: Trần Ngọc Khoa > Priority: Major > Time Spent: 1h > Remaining Estimate: 0h > > I'm trying to log an object to console with JSON style using > {{ToStringBuilder.reflectionToString}} from {{commons-lang3:3.10}} but it > seems generated a wrong JSON format. > Problem happening when I have a list of enums in my field list. > > {code:java} > This is the class: > public class Person { > private long id; > private String name; > private List<MyEnum> listEnums; > //getter and setter > public String toString(){ > return ToStringBuilder.reflectionToString(this, > ToStringStyle.JSON_STYLE); > } > } > {code} > > And {{MyEnum}}: > {code:java} > public enum MyEnum { > FOOD, > SPORT, > BOOK, > MUSIC > }{code} > When I call {{toString()}} of Person object. It shows like this > {code:java} > { > "id": 1, > "name": "Karl", > "listEnums": [FRIDAY, MONDAY, TUESDAY] > }{code} > > What I expected is: > {code:java} > { > "id": 1, > "name": "Karl", > "listEnums": ["FRIDAY", "MONDAY", "TUESDAY"] > }{code} > -- This message was sent by Atlassian Jira (v8.3.4#803005)