kwin commented on a change in pull request #42:
URL: 
https://github.com/apache/sling-org-apache-sling-resourceresolver/pull/42#discussion_r583485646



##########
File path: 
src/main/java/org/apache/sling/resourceresolver/impl/ResourceResolverFactoryActivator.java
##########
@@ -313,10 +314,11 @@ protected void activate(final BundleContext 
bundleContext, final ResourceResolve
                 String value = prefix.trim();
                 if (!value.isEmpty()) {
                     if (value.startsWith("/")) { // absolute path should be 
given
+                        // path must not end with "/" to be valid absolute path
                         if (value.endsWith("/")) {
-                            prefixSet.add(value);
+                            prefixSet.add(StringUtils.removeEnd(value, "/"));

Review comment:
       `StringUtils.removeEnd` already has a check so you can remove the 
surrounding if

##########
File path: 
src/main/java/org/apache/sling/resourceresolver/impl/mapping/MapEntries.java
##########
@@ -1036,8 +1037,9 @@ private String updateAliasQuery(){
         baseQuery.append(" ").append("WHERE");
 
         if(allowedLocations.isEmpty()){
+            String jcrSystemPath = StringUtils.removeEnd(JCR_SYSTEM_PREFIX, 
"/");

Review comment:
       The check performed by 
http://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/StringUtils.html#removeEnd-java.lang.String-java.lang.String-
 is not really necessary here, because you know that the constant ends with 
"/", right? I would just use `jcrSystemPath.substring(0, jcrSystemPath.length() 
- 1);` in this case.




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