[forge-issues] [JBoss JIRA] (FORGE-2021) Forge UI should not call UICommand.validate() if required inputs are not populated

[Lincoln Baxter III (JIRA)]

Lincoln Baxter III created FORGE-2021:
-----------------------------------------

             Summary: Forge UI should not call UICommand.validate() if required inputs are not populated
                 Key: FORGE-2021
                 URL: https://issues.jboss.org/browse/FORGE-2021
             Project: Forge
          Issue Type: Feature Request
          Components: UI - API
    Affects Versions: 2.10.1.Final
            Reporter: Lincoln Baxter III
             Fix For: 2.x Future


This command: 

{code}public class WindupWizard implements UIWizard, UICommand

    @Inject
    @WithAttributes(label = "Input", required = true, description = "Input File or Directory (a Directory is required for source mode)")
    private UIInput<FileResource<?>> input;

    @Override
    public void validate(UIValidationContext context)
    {
        FileResource<?> inputValue = this.input.getValue();
        File inputFile = inputValue.getUnderlyingResourceObject();
{code}

Results in an NPE when the command is called using guided execution:

{code}
[Desktop]$ windup-migrate-app 
Exception when parsing/running: windup-migrate-app , null
[Desktop]$ 
{code}



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