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javagenericssun-codemodel

codemodel narrow for generics

I would like to generate a new class as follows:

public class QueryBuilder_QueryField
extends AbstractQueryBuilder<QueryBuilder_QueryField>

and i tried this but it doesn't narrow the extends... 

JCodeModel model = new JCodeModel();
String fqcn = packageName + "." + className;
JDefinedClass builderClass = model._class(fqcn);
builderClass._extends(AbstractQueryBuilder.class).narrow(builderClass);

but instead ends up like 

public class QueryBuilder_QueryField
extends AbstractQueryBuilder

any ideas?

Solution

  • I believe you need to narrow before you pass the class into _extends():

    JCodeModel model = new JCodeModel();
String fqcn = packageName + "." + className;
JDefinedClass builderClass = model._class(fqcn);
builderClass._extends(model.ref(AbstractQueryBuilder.class).narrow(builderClass));

    Generates:

    public class QueryBuilder_QueryField
extends AbstractQueryBuilder<QueryBuilder_QueryField>