我已将此添加到build.sbt
libraryDependencies += "com.typesafe.slick" %% "slick-codegen" % "2.1.0"
lazy val slickGenerate = TaskKey[Seq[File]]("slick code generation")
slickGenerate <<= slickGenerateTask
lazy val slickGenerateTask = {
(sourceManaged in Compile,dependencyClasspath in Compile,runner in Compile,streams) map { (dir,cp,r,s) =>
val dbName = "dbname"
val userName = "user"
val password = "password"
val url = s"jdbc:MysqL://server:port/$dbName"
val jdbcDriver = "com.MysqL.jdbc.Driver"
val slickDriver = "scala.slick.driver.MysqLDriver"
val targetPackageName = "models"
val outputDir = (dir / dbName).getPath // place generated files in sbt's managed sources folder
val fname = outputDir + s"/$targetPackageName/Tables.scala"
println(s"\nauto-generating slick source for database schema at $url...")
println(s"output source file file: file://$fname\n")
r.run("scala.slick.codegen.SourceCodeGenerator",cp.files,Array(slickDriver,jdbcDriver,url,outputDir,targetPackageName,userName,password),s.log)
Seq(file(fname))
}
}
任务的代码本身并不是很令人兴奋.它只需要创建一个自动生成的scala源文件.问题是,sbt开始很好,但是这个新任务显然不被sbt识别,不能在sbt提示符下运行.对于任务定义的：=语法,我也很幸运.现有文档只是令人困惑.
如何在sbt提示符中提供此新任务？
解决方法
这有效
libraryDependencies += "com.typesafe.slick" %% "slick-codegen" % "2.1.0"
lazy val slickGenerate = taskKey[Seq[File]]("slick code generation")
slickGenerate := {
val dbName = "dbname"
val userName = "user"
val password = "password"
val url = s"jdbc:MysqL://server:port/$dbName"
val jdbcDriver = "com.MysqL.jdbc.Driver"
val slickDriver = "scala.slick.driver.MysqLDriver"
val targetPackageName = "models"
val outputDir = ((sourceManaged in Compile).value / dbName).getPath // place generated files in sbt's managed sources folder
val fname = outputDir + s"/$targetPackageName/Tables.scala"
println(s"\nauto-generating slick source for database schema at $url...")
println(s"output source file file: file://$fname\n")
(runner in Compile).value.run("scala.slick.codegen.SourceCodeGenerator",(dependencyClasspath in Compile).value.files,streams.value.log)
Seq(file(fname))
}
在sbt 0.13.x你不需要所有那些blabla map sameblabla样板.只需按原样访问值(编译中的运行符).value – 宏将为您完成所有其他操作.
> slickGenerate
[info] Updating {file:/Users/user/slick/}slick...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
auto-generating slick source for database schema at jdbc:MysqL://server:port/dbname...
output source file file: file:///Users/user/slick/target/scala-2.10/src_managed/main/dbname/models/Tables.scala
> help slickGenerate
slick code generation
谈论<< = - 您的TaskKey不正确,请参阅定义：
def apply[T](label : scala.Predef.String,description : scala.Predef.String // not description
因此,旧的定义<< =使用“生成光滑的代码”作为标签,而new：=使用代码给定的命令名称(新样式),因此它使用“生成光滑的代码”作为文档.这看起来很奇怪且不一致,但这是事实,而且部分原因是向后兼容性. 所以,正确的旧式版本是：
import sbt.Keys._
lazy val slickGenerate = TaskKey[Seq[File]]("slick-generate","generate slick code")
slickGenerate <<= slickGenerateTask
def slickGenerateTask =
(sourceManaged in Compile,s) =>
...
}
它的工作方式与之前相同.注意,你必须使用“slickGenerate”而不是“slick-generate”,最后一个不能用于“help”命令.
顺便说一句,你现在正在使用Bare build definition – 你可能希望切换到Multi-project .sbt definition,因为它是由sbt docs,see also推荐的.
