我在使用apache flink scala api时遇到问题
例如，即使我从官方文档中获取示例，scala编译器也会给我大量的编译错误。
代码：

object TestFlink {

  def main(args: Array[String]) {
    val env = ExecutionEnvironment.getExecutionEnvironment
    val text = env.fromElements(
      "Who's there?",
      "I think I hear them. Stand, ho! Who's there?")

    val counts = text.flatMap { _.toLowerCase.split("\\W+") filter { _.nonEmpty } }
      .map { (_, 1) }
      .groupBy(0)
      .sum(1)

    counts.print()

    env.execute("Scala WordCount Example")
  }
}

scalaide为行输出以下内容 val text = env.fromElements ```
Multiple markers at this line

• not enough arguments for method fromElements: (implicit evidence$14: scala.reflect.ClassTag[String], implicit evidence$15:
  org.apache.flink.api.common.typeinfo.TypeInformation[String])org.apache.flink.api.scala.DataSet[String]. Unspecified value parameter evidence$15.
• could not find implicit value for evidence parameter of type org.apache.flink.api.common.typeinfo.TypeInformation[String]
• could not find implicit value for evidence parameter of type org.apache.flink.api.common.typeinfo.TypeInformation[String]
• not enough arguments for method fromElements: (implicit evidence$14: scala.reflect.ClassTag[String], implicit evidence$15:
  org.apache.flink.api.common.typeinfo.TypeInformation[String])org.apache.flink.api.scala.DataSet[String]. Unspecified value parameter evidence$15.

不仅仅是 `fromElements` 方法：即使我读了一个文件，然后试着做一些像 `ds.map(r => r)` ，我得到了非常相似的东西

Multiple markers at this line
- not enough arguments for method map: (implicit evidence$4: org.apache.flink.api.common.typeinfo.TypeInformation[K], implicit
evidence$5: scala.reflect.ClassTag[K])org.apache.flink.api.scala.DataSet[K]. Unspecified value parameters evidence$4, evidence$5.
- could not find implicit value for evidence parameter of type org.apache.flink.api.common.typeinfo.TypeInformation[K]
- could not find implicit value for evidence parameter of type org.apache.flink.api.common.typeinfo.TypeInformation[K]
- not enough arguments for method map: (implicit evidence$4: org.apache.flink.api.common.typeinfo.TypeInformation[K], implicit
evidence$5: scala.reflect.ClassTag[K])org.apache.flink.api.scala.DataSet[K]. Unspecified value parameters evidence$4, evidence$5.

我尝试了两个版本的flink:maven central的0.8.1和github存储库中最新的版本。
我运行的是Windows7，Scala2.10.4，JDK1.7.0\u25，ScalaIDE版本是3.0.3-20140327-1716-typesafe，在Eclipse4.3.0之上
我做错什么了？