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https://issues.apache.org/jira/browse/MYFACES-4237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16511260#comment-16511260
 ] 

ASF GitHub Bot commented on MYFACES-4237:
-----------------------------------------

pnicolucci closed pull request #7: MYFACES-4237: improve performance when 
checking for duplicate ids
URL: https://github.com/apache/myfaces/pull/7
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git 
a/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/CheckDuplicateIdFaceletUtils.java
 
b/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/CheckDuplicateIdFaceletUtils.java
index f0dd9c4c7..0543196f3 100644
--- 
a/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/CheckDuplicateIdFaceletUtils.java
+++ 
b/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/CheckDuplicateIdFaceletUtils.java
@@ -55,14 +55,12 @@ private static void checkIdsStatefulComponents 
(FacesContext context,
         
         id = component.getClientId (context);
         
-        if (existingIds.contains (id))
+        if (!existingIds.add (id))
         {
             DuplicateIdException duplicateIdException = 
createAndQueueException(context, component, id);
             throw duplicateIdException;
         }
         
-        existingIds.add (id);
-        
         int facetCount = component.getFacetCount();
         if (facetCount > 0)
         {
@@ -102,14 +100,12 @@ private static void checkIds (FacesContext context, 
UIComponent component, Set<S
         
         id = component.getClientId (context);
         
-        if (existingIds.contains (id))
+        if (!existingIds.add (id))
         {
             DuplicateIdException duplicateIdException = 
createAndQueueException(context, component, id);
             throw duplicateIdException;
         }
         
-        existingIds.add (id);
-        
         int facetCount = component.getFacetCount();
         if (facetCount > 0)
         {


 

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> [perf] Performance update when checking for duplicate ids
> ---------------------------------------------------------
>
>                 Key: MYFACES-4237
>                 URL: https://issues.apache.org/jira/browse/MYFACES-4237
>             Project: MyFaces Core
>          Issue Type: Improvement
>          Components: JSR-372
>    Affects Versions: 2.2.12, 2.3.1
>            Reporter: Paul Nicolucci
>            Assignee: Paul Nicolucci
>            Priority: Minor
>             Fix For: 2.2.13, 2.3.2
>
>
> In 
> org/apache/myfaces/view/facelets/compiler/CheckDuplicateIdFaceletUtils.java 
> we currently do the following:
> {code:java}
> if (existingIds.contains (id)) {
> ....
> }
> {code}
> We can increase performance by doing the following:
> {code:java}
> if (!existingIds.add (id)) {
> ....
> }
> {code}



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