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我想覆蓋scala中的dbcp BasicDataSource類,但我感到困惑的編譯器輸出。如果我試圖做到以下幾點:覆蓋Scala中的BasicDataSource
class MyBasicDataSource extends BasicDataSource {
}
我得到以下編譯器錯誤:
class MyBasicDataSource needs to be abstract, since: it has 3 unimplemented members. /** As seen from class MyBasicDataSource, the missing signatures are
as follows. * For convenience, these are usable as stub implementations. */ // Members declared in javax.sql.CommonDataSource def getParentLogger():
java.util.logging.Logger = ??? // Members declared in java.sql.Wrapper def isWrapperFor(x$1: Class[_]): Boolean = ??? def unwrap[T](x$1: Class[T]): T = ???
但我可以實例化一個新的BasicDataSource:
val ds = new BasicDataSource
,所以它不是一個抽象的類。我也可以在沒有任何編譯器錯誤的情況下在java中覆蓋它。有人可以向我解釋爲什麼我得到這些編譯器錯誤?
感謝 德
可能scala編譯器運行在jdk7上並且java編譯器在jdk6上運行? – Luciano
它們都配置爲在jdk7上運行。爲什麼這可能是一個問題? – user79074
你使用的是commons-dbcp 2.0嗎? – Luciano