Groovy class overridden constructor, why MissingMethodException?

Question

I have the following class:

@groovy.transform.InheritConstructors
class PythonBuild {
    def basePath
    def branchName

    PythonBuild(String basePath, String branchName) {
        // stuff
    }
}

when I instantiate it:

master = PythonBuild('Python-Backend/+MASTER/', 'master')

I get this error:

groovy.lang.MissingMethodException: No signature of method:
Script1.PythonBuild() is applicable for argument types:
(java.lang.String, java.lang.String) values: [Python-Backend/+MASTER/, master]

This error makes no sense to me since, as far as I can tell, the constructor is defined as taking two strings and I am passing two strings.

I am new to Groovy and have got this far by copying examples. What am I doing wrong?

It seems that Newify is not inherited. Could you please check it? Annotate PythonBuild with Newify? — Opal
– Opal, Commented Nov 2, 2015 at 11:37
Should not it be with keyword new while initiating new class master = new PythonBuild('Python-Backend/+MASTER/', 'master') — vvg
– vvg, Commented Nov 2, 2015 at 11:40
@mst is right, you're just missing the new infront of PythonBuild when trying to call the constructor... Voting to close this as a simple typographic error — tim_yates
– tim_yates, Commented Nov 2, 2015 at 11:43
@tim_yates it's not a typographic error, I didn't realise the keyword was required. And to be honest the error message from Groovy is not very helpful... though I think I understand now that is was looking for a static method to call rather than the constructor (?) — Anentropic
– Anentropic, Commented Nov 2, 2015 at 13:02

Anentropic · Accepted Answer · 2015-11-02 12:57:57Z

2

new keyword missed, while invoking constructor.

@groovy.transform.InheritConstructors
class PythonBuild {    
    def basePath     
    def branchName     
    def PythonBuild(String basePath, String branchName) { } 
}


def master = new PythonBuild('Python-Backend/+MASTER/', 'master')


println(master)

edited Nov 2, 2015 at 12:57

Anentropic

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answered Nov 2, 2015 at 11:45

vvg

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