[
https://issues.apache.org/jira/browse/TEXT-211?focusedWorklogId=750981&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-750981
]
ASF GitHub Bot logged work on TEXT-211:
---------------------------------------
Author: ASF GitHub Bot
Created on: 31/Mar/22 13:01
Start Date: 31/Mar/22 13:01
Worklog Time Spent: 10m
Work Description: sebx59 commented on a change in pull request #281:
URL: https://github.com/apache/commons-text/pull/281#discussion_r839578006
##########
File path: src/main/java/org/apache/commons/text/TextStringBuilder.java
##########
@@ -1850,7 +1850,25 @@ public boolean equals(final Object obj) {
* @return true if the builders contain the same characters in the same
order
*/
public boolean equals(final TextStringBuilder other) {
- return other != null && Arrays.equals(buffer, other.buffer);
+ if (this == other) {
+ return true;
+ }
+ if (other == null) {
+ return false;
+ }
+ if (this.size != other.size) {
+ return false;
+ }
+ // Be aware not to use Arrays.equals(buffer, other.buffer) for
equals() method
+ // as length of the buffers may be different (TEXT-211)
Review comment:
size of the TextStringBuilder cannot be different but sizes of their
buffers can as the size represents the real number of characters of the
TextStringBuilder but the buffer may have been initialized with another
capacity.
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Issue Time Tracking
-------------------
Worklog Id: (was: 750981)
Time Spent: 6h (was: 5h 50m)
> TextStringBuilder equals method changed behaviour from 1.8 to 1.9
> -----------------------------------------------------------------
>
> Key: TEXT-211
> URL: https://issues.apache.org/jira/browse/TEXT-211
> Project: Commons Text
> Issue Type: Bug
> Affects Versions: 1.9
> Reporter: Nikolaos Georgiou
> Priority: Major
> Time Spent: 6h
> Remaining Estimate: 0h
>
> We found a regression (or breaking compatibility change) in the
> TextStringBuilder equals method when upgrading commons-text from 1.8 to 1.9
>
> The 1.8 version (
> [https://github.com/apache/commons-text/blob/commons-text-1.8/src/main/java/org/apache/commons/text/TextStringBuilder.java#L2915]
> ) would only compare the parts of the buffer that fall within the range
> 0..size.
> The 1.9 version (
> [https://github.com/apache/commons-text/blob/rel/commons-text-1.9/src/main/java/org/apache/commons/text/TextStringBuilder.java#L1855]
> ) compares the entire buffer arrays.
> If a TextStringBuilder has extra capacity in the buffer, comparison fails.
>
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