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From "Lukasz Lenart (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (WW-4215) CDI plugin does not allow constructor injection
Date Thu, 03 Oct 2013 08:46:45 GMT

     [ https://issues.apache.org/jira/browse/WW-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lukasz Lenart updated WW-4215:
------------------------------

    Issue Type: Improvement  (was: Bug)

> CDI plugin does not allow constructor injection
> -----------------------------------------------
>
>                 Key: WW-4215
>                 URL: https://issues.apache.org/jira/browse/WW-4215
>             Project: Struts 2
>          Issue Type: Improvement
>          Components: Plugin - CDI
>    Affects Versions: 2.3.15.2
>            Reporter: gui
>             Fix For: 2.3.17
>
>
> I'm converting some actions from spring injection to CDI injection. 
> The beans have a non empty constructor that can be used by CDI (constructor is annotated
with @Inject). I don't want to switch to field injection, since i like to use final fields
for dependencies that don't change. 
> However, cdi-plugin insists on having a no-arg constructor: 
> {code}
> Caused by: Action class [com.mycompany.MyClass] does not have a public no-arg constructor
- action - file:/struts.xml:22:106
>         at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:431)
[xwork-core-2.3
> .1.jar:2.3.1]
>         at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:370)
[xwork-core-2.3.1.
> jar:2.3.1]
>         at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:487)
[xwork-core-2.3.1
> .jar:2.3.1]
>         at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:278)
[xwork-core-2.3
> .1.jar:2.3.1]
>         at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:112)
[struts2-core-2.3.
> 1.jar:2.3.1]
>         at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:204)
[xwork-core-2.3.1.jar:2.3
> .1]
>         at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:
> {code}
> After looking at the code, i created my own ObjectFactory that overrides the 'isNoArgConstructorRequired'
method. 
> {code}
> public class MyCdiObjectFactory extends CdiObjectFactory {
>     @Override
>     public boolean isNoArgConstructorRequired() {
>         return false;
>     }
> }
> {code}
> Using this objectfactory, all works as expected. It would be good to have this in the
standard CidObjectFactory.



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