泛型的代码模型狭窄

Question

我想生成一个新的 class 如下：

public class QueryBuilder_QueryField
extends AbstractQueryBuilder<QueryBuilder_QueryField>

我试过了，但它并没有缩小扩展...

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

但结果却像

public class QueryBuilder_QueryField
extends AbstractQueryBuilder

有什么想法吗？

Answer 1

我认为在将 class 传递给 _extends() 之前您需要缩小范围：

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

生成：

public class QueryBuilder_QueryField
extends AbstractQueryBuilder<QueryBuilder_QueryField>