Set a variable not working

[andres digiovanni, módosítva 11 év-val korábban]

Hi,

I'm trying to set a variable with the value of a method. But it doesn't work:

#set ($assetLinkLocalService = $serviceLocator.findService("com.liferay.portlet.asset.service.AssetLinkLocalService"))
#set ($assetlinks = $assetLinkLocalService.getDirectLinks( $ae.getEntryId() ))

#set ($siz = $assetlinks.size())

But if I use this code, it print the correct value:

#set ($assetLinkLocalService = $serviceLocator.findService("com.liferay.portlet.asset.service.AssetLinkLocalService"))
#set ($assetlinks = $assetLinkLocalService.getDirectLinks( $ae.getEntryId() ))

$assetlinks.size()

Why I can't set a variable with the value?

Regards,
Andrés

[Ryan Schuhler, módosítva 11 év-val korábban]

If the second code works than the first should as well. If you do want to see the print out you would have to print out the $siz variable. It would look like this:

#set ($assetLinkLocalService = $serviceLocator.findService("com.liferay.portlet.asset.service.AssetLinkLocalService"))
#set ($assetlinks = $assetLinkLocalService.getDirectLinks( $ae.getEntryId() ))
#set ($siz = $assetlinks.size())
$siz

What is the value of the $ae variable, so I can test it?

[andres digiovanni, módosítva 11 év-val korábban]

The problem is that I get this error:

java.lang.NullPointerException

When I try to set a variable with the size value. The first code doesn't work.

Regards,
Andrés

[Ryan Schuhler, módosítva 11 év-val korábban]

It is definitely possible to set the variable with the value of the method, you already did it twice with .findService() and .getDirectLinks(). Can you attach your code so I can see where the disconnect is or why its giving you the null pointer exception?