AntBuilder from Java

Help/Discuss
1

I am having a hard time figuring out how to convert some Groovy-based build code to Java when the Groovy code is using AntBuilder. Apparently y’all or Groovy weave extra capabilities into it.

E.g. I have this Groovy code:

project.ant.taskdef(name: 'xjc', classname: extension.xjcTaskName, classpath: configuration.asPath)

project.ant.xjc(
        destdir: extension.outputDir,
        binding: descriptor.xjcBinding,
        schema: descriptor.xsd,
        target: descriptor.jaxbVersion,
        extension: 'true') {
                ...
}

How can I achieve this in Java code?

2

Project.getAnt() returns a Gradle AntBuilder that extends the Groovy AntBuilder. You’ll want to use the invoke( "xjc", args ) method of the AntBuilder. I believe args should be a Map containing the same KVs you have in your groovy code, but I’m not 100% sure of that.

3

I have internal code that calls xjc from Java as well. I haven’t looked at in a while, but if the groovy code has a closure at the end where your ... starts, you end up wanting a List. The first element of the list is the Map mentioned, and the second is your code that represents what would be in the closure.

4

But what about the task def? Do I use invoke as well?

5

The ... would be Ant task args (<arg/>):

project.ant.xjc(
        destdir: extension.outputDir,
        binding: descriptor.xjcBinding,
        schema: descriptor.xsd,
        target: descriptor.jaxbVersion,
        extension: 'true') {
            arg line: "-npa "
            if ( !schemaDescriptor.xjcExtensions.empty ) {
                arg line: schemaDescriptor.xjcExtensions.collect { "-X${it}" }.join( " " )
            }
        }
)