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https://issues.apache.org/jira/browse/TAP5-852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship updated TAP5-852:
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Summary: Mechanism to initialize components and component fields without as
much explicit code gen & injection (was:
ClassTransformation.addInitialization())
> Mechanism to initialize components and component fields without as much
> explicit code gen & injection
> -----------------------------------------------------------------------------------------------------
>
> Key: TAP5-852
> URL: https://issues.apache.org/jira/browse/TAP5-852
> Project: Tapestry 5
> Issue Type: New Feature
> Components: tapestry-core
> Reporter: Howard M. Lewis Ship
>
> It is very common to want to add some initialization to a component.
> Currently, it is necessary to inject dependencies and directly add code.
> It would be nice if there were new interfaces:
> interface ComponentInitializer {
> void initializeComponent(ComponentResources resources);
> }
> interface ComponentFieldInitializer {
> Object initializeComponentField(ComponentResources resources);
> }
> These could be paired up with methods in ClassTransformation:
> void addFieldInitialization(String fieldName, ComponentFieldInitializer
> initializer);
> void addInitialization(ComponentInitializer initializer);
> These methods would translate to code executed in the constructor of the
> component.
> This would simplify many of the existing component class transform workers.
> It also represents a way to start moving away from writing explicit code
> generation (using Javassist psuedo-code) towards a more API driven approach
> that could eventually be implemented using
> ASM or some other better supported toolkit.
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