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SEC-543: Added null guard clauses to reduce nesting and increase readability.

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This commit is contained in:
Luke Taylor
2008-01-29 15:55:29 +00:00
parent c9de2f6c9f
commit 9fe181046b
1 changed files with 27 additions and 22 deletions
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core/src/main/java/org/springframework/security/concurrent/SessionRegistryImpl.java
+27 -22
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@@ -145,31 +145,36 @@ public class SessionRegistryImpl implements SessionRegistry, ApplicationListener
SessionInformation info = getSessionInformation(sessionId);
if (info != null) {
if (info == null) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug("Removing session " + sessionId + " from set of registered sessions");
}
sessionIds.remove(sessionId);
Set sessionsUsedByPrincipal = (Set) principals.get(info.getPrincipal());
if (sessionsUsedByPrincipal == null) {
return;
}
synchronized (sessionsUsedByPrincipal) {
if (logger.isDebugEnabled()) {
logger.debug("Removing session " + sessionId + " from set of registered sessions");
logger.debug("Removing session " + sessionId + " from principal's set of registered sessions");
}
sessionIds.remove(sessionId);
Set sessionsUsedByPrincipal = (Set) principals.get(info.getPrincipal());
sessionsUsedByPrincipal.remove(sessionId);
if (sessionsUsedByPrincipal != null) {
synchronized (sessionsUsedByPrincipal) {
if (logger.isDebugEnabled()) {
logger.debug("Removing session " + sessionId + " from principal's set of registered sessions");
}
sessionsUsedByPrincipal.remove(sessionId);
if (sessionsUsedByPrincipal.size() == 0) {
// No need to keep object in principals Map anymore
if (logger.isDebugEnabled()) {
logger.debug("Removing principal " + info.getPrincipal() + " from registry");
}
principals.remove(info.getPrincipal());
}
}
}
}
if (sessionsUsedByPrincipal.size() == 0) {
// No need to keep object in principals Map anymore
if (logger.isDebugEnabled()) {
logger.debug("Removing principal " + info.getPrincipal() + " from registry");
}
principals.remove(info.getPrincipal());
}
}
}
}