如何在scala中指定Foo.class？

Question

I am using java API that looks like:

import com.google.code.morphia.Morphia;

.....

     val morphia = new Morphia();
     morphia.map(Hotel.class).map(Address.class);

but it gives scala compiler error. what is the correct code in scala for above? Note that .map is defined as part of morphia API and not to be confused with scala map.

Answer 1

Assuming your problem is with the .class parts, the Scala equivalent of Hotel.class would be classOf[Hotel] , likewise for Address .

Hopefully this should fix your problem, although it's hard to tell without seeing the full compiler output.

Answer 2

你应该使用classOf[Hotel]

Answer 3

Edit : After having looked at the API; what you actually want is:

classOf[T]

eg.

classOf[Hotel]

More info on Scala's typesystem.

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Wrong answer, but maybe useful, if someone is mislead by this questions title:

class is a reserved word in Scala. If you want to use it as a field or method name, you need to enclose it with backticks:

Hotel.`class`