failsafe mode for lock creating

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@178387 a5903396-d722-0410-b921-86c7d4935375
enhanced searching functionality

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@178388 a5903396-d722-0410-b921-86c7d4935375