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https://issues.apache.org/jira/browse/LANG-1542?focusedWorklogId=434088&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-434088
]
ASF GitHub Bot logged work on LANG-1542:
----------------------------------------
Author: ASF GitHub Bot
Created on: 16/May/20 17:04
Start Date: 16/May/20 17:04
Worklog Time Spent: 10m
Work Description: swarajsaaj commented on a change in pull request #530:
URL: https://github.com/apache/commons-lang/pull/530#discussion_r426171315
##########
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:
This should fix the case I mentioned earlier. I guess, test cases can
also be updated for non-enum collections, else seems good.
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Issue Time Tracking
-------------------
Worklog Id: (was: 434088)
Time Spent: 1.5h (was: 1h 20m)
> 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: 1.5h
> 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}
>
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