topic Default missing parameters in context in Alfresco Archive

Default missing parameters in context

rjohnson — Wed, 06 Jan 2016 19:05:17 GMT

I have a timed job that sets its quarrtz cron string using a parameter like this <property name="cronExpression"> <value>${myservice.cron}</value> </property>‍‍‍‍‍I would like to be able to default the service cron should someone not set the parameter my

Re: Default missing parameters in context

mrogers — Wed, 06 Jan 2016 22:39:00 GMT

Do you want to default the parameter in the spring context for injection into a spring bean or format something like a web script response with a freemarker template?   There is a big difference.

If in the spring context then there are a number of locations loaded.    Alfresco's default property values are provided in the repository.properties file which can then be overridden by files like alfresco-global.properties.   I remember documenting the precedence rules on the wiki although you can also follow the property loading in the bootstrap section of the spring context.   It gets slightly more complicated by modules and subsystems but its still simply loading property files in a specific order,

If in a freemarker template then your property needs to be in the model passed to the template.   Freemarker has commands for testing whether values exist and defaulting a value for example the ? and ! operators or <#if>

Re: Default missing parameters in context

rjohnson — Tue, 26 Jan 2016 17:16:55 GMT

Basically its for the trashcan cleaner quartz job. What I wanted to happen was that is the cron expression was not set up in alfresco-global.properties it woukld default to a preset value which was provided via the context XML.

I have got it using the .properties just fine, I just wanted to be able to effectively say "if this property does not exist, use this string instead".