sql-server scala playframework jtds slick

Connecting to MSSQL(jtds) with Play and Slick

I have a project that's been finished for about a month that I made using Play 2.1.1, slick, and MySQL. Now I need to move this over to MSSQL and I'm having some issues.

My application compiles fine, and finds the drivers, but whenever I try to make the connection I get an [RuntimeException: java.lang.ExceptionInInitializerError] on the site, and a more detailed error in my console is:

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.ExceptionInInitializerError]]
    at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.1]
    at play.api.DefaultApplication.handleError(Application.scala:383) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:326) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:324) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]java.lang.RuntimeException: java.lang.ExceptionInInitializerError
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:222) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:108) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:106) ~[play_2.10.jar:2.1.1]Caused by: java.lang.ExceptionInInitializerError: null
    at controllers.Application$$anonfun$addLicense$1.apply(Application.scala:18) ~[na:na]
    at controllers.Application$$anonfun$addLicense$1.apply(Application.scala:17) ~[na:na]
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:217) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
Caused by: play.api.Configuration$$anon$1: Configuration error[Slick error : Unknown jdbc driver found in application.conf: [net.sourceforge.jtds.jdbc.Driver]]
    at play.api.Configuration$.play$api$Configuration$$configError(Configuration.scala:80) ~[play_2.10.jar:2.1.1]
    at play.api.Configuration.reportError(Configuration.scala:558) ~[play_2.10.jar:2.1.1]
    at play.api.db.slick.Config$.driver(Config.scala:21) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at play.api.db.slick.Config$.driver$lzycompute(Config.scala:7) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at play.api.db.slick.Config$.driver(Config.scala:7) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at models.License$.<init>(License.scala:38) ~[na:na]

The most interesting thing that I've found is this line though:

Caused by: play.api.Configuration$$anon$1: Configuration error[Slick error : Unknown jdbc driver found in application.conf: [net.sourceforge.jtds.jdbc.Driver]]

It found the driver because if I put in the wrong name it gives me an error;with this entered it does not. I have the jtds driver in my lib directory.

I also do connect to the db on startup

[info] play - database [default] connected at jdbc:jtds:sqlserver://ServerAddress/EGLC

Some additional info:

application.conf:

db.default.url="jdbc:jtds:sqlserver://ServerAddress/EGLC"
db.default.driver=net.sourceforge.jtds.jdbc.Driver
db.default.user="sa"
db.default.password="pass"
slick.default="models.*"

Build.scala:

val appDependencies = Seq(
// Add your project dependencies here,
jdbc,
"mysql" % "mysql-connector-java" % "5.1.25",
"net.sourceforge.jtds" % "jtds" % "1.3.1",
"com.typesafe.play" %% "play-slick" % "0.3.3"
)

EDIT When I refresh a page though I get a different exception with a new set of errors that don't even mention jtds

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class models.Location$]]
    at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.1]
    at play.api.DefaultApplication.handleError(Application.scala:383) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:326) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:324) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]java.lang.RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class models.Location$
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:222) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:108) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:106) ~[play_2.10.jar:2.1.1]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class models.Location$
    at controllers.Application$$anonfun$locations$1$$anonfun$apply$12$$anonfun$apply$13.apply(Application.scala:47) ~[na:na]
    at controllers.Application$$anonfun$locations$1$$anonfun$apply$12$$anonfun$apply$13.apply(Application.scala:46) ~[na:na]
    at controllers.Secured$$anonfun$IsAuthenticated$3$$anonfun$apply$3.apply(Auth.scala:38) ~[na:na]
    at controllers.Secured$$anonfun$IsAuthenticated$3$$anonfun$apply$3.apply(Auth.scala:38) ~[na:na]
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:217) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]

Solution

play-slick doesn't know the jTDS driver. While Slick in general supports SQL server, play-slick makes a connection from driver class name to Slick driver:

private def driverByName : String => Option[ExtendedDriver] = Map(
   "org.apache.derby.jdbc.EmbeddedDriver" -> DerbyDriver
   ,"org.h2.Driver" -> H2Driver
   ,"org.hsqldb.jdbcDriver" -> HsqldbDriver
   ,"com.mysql.jdbc.Driver" -> MySQLDriver
   ,"org.postgresql.Driver" -> PostgresDriver
   ,"org.sqlite.JDBC" -> SQLiteDriver
   ,"com.microsoft.sqlserver.jdbc.SQLServerDriver" -> SQLServerDriver
).get(_)

As you can see, Microsoft's driver is supported while jTDS is not. You can now either use Microsoft's JDBC driver or modify play-slick. The change is simple. Just add the line

,"net.sourceforge.jtds.jdbc.Driver" -> SQLServerDriver

and it should work.

I have seen the issue that you have raised on the project's GitHub page. I have sent a pull request that should resolve this issue. Maybe it gets incorporated into play-slick's next version.