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How can I check for empty or null string with ValueBuilder?


If I have a choice block, and if I want to examine an exchange property
with is supposed to be set as a String, how can I check if it's empty or
null?  I can check for empty with exchangeProperty(PROPERTY_NAME).isNull(),
but how can I add the check for an empty string too?


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Call Stack
#TimeMemoryFunctionLocation
10.0007362552{main}( ).../msg03408.html:0

( ! ) Warning: include(): Failed opening 'msgfooter.php' for inclusion (include_path='.:/var/www/git') in /var/www/git/apache-camel-users/msg03408.html on line 72
Call Stack
#TimeMemoryFunctionLocation
10.0007362552{main}( ).../msg03408.html:0