[ https://issues.apache.org/jira/browse/SSHD-739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964806#comment-15964806 ]
Guillaume Nodet commented on SSHD-739: -------------------------------------- I also wonder if there's a need to make the {{SyspropsMapWrapper}} dynamic at all. If it would be initialized at construction time, it would not have to iterate through all the system properties each time. > A call to resolvePropertyValue can be very inefficient > ------------------------------------------------------ > > Key: SSHD-739 > URL: https://issues.apache.org/jira/browse/SSHD-739 > Project: MINA SSHD > Issue Type: Bug > Reporter: Guillaume Nodet > > Each time a property is retrieved, all system properties names are iterated. > This is because {{PropertyResolverUtil#resolvePropertyValue}} is calling > {{GenericUtils.isEmpty(props)}} on a {{SyspropsMapWrapper}}. > This can be solved by using {{isNull(props)}} instead of {{isEmpty(props)}} > as there's no need to check if the map is empty. > In the same call, there's also a call to {{System.getProperty}} which seems > to be redundant with the {{SyspropsMapWrapper}}. I think it should be > removed. -- This message was sent by Atlassian JIRA (v6.3.15#6346)