I ran into a problem testing the nice SORM lib.
When I try to run code like this:
case class Coffee(name: String, supplier: Supplier, price: Double, sales: Int, total: Int)
case class Supplier(name: String, street: String, city: String, state: String, zip: String)
object Db extends Instance(
entities = Set(Entity[Coffee](), Entity[Supplier]()),
url = "jdbc:h2:mem:play",
initMode = InitMode.Create
)
val supplier1 = Supplier("Acme, Inc.", "99 Market Street", "Groundsville", "CA", "95199")
Db.save(supplier1)
I get exceptions like this:
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106) ~[mchange-commons-java-0.2.3.jar:na]
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:641) ~[c3p0-0.9.2-pre5.jar:0.9.2-pre5]
I use Play 2.10 and my DB config looks like this:
db.default.driver=org.h2.Driver
db.default.url="jdbc:h2:mem:play"
# db.default.user=sa
# db.default.password=""
Am I missing something?
Thanks in advance!
This code runs absolutely fine. The problem must be somewhere in your setup. E.g., to be able to use H2 database you need to include it in your project's dependencies.
In the Maven project in which I successfully tested your code I had the following dependency:
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.3.168</version>
</dependency>
Related
When using Kotlin's Script Engine, trying to import packages or use any class throws an "unresolved reference"
javax.script.ScriptException: error: unresolved reference: mrpowergamerbr
fun loritta(context: com.mrpowergamerbr.loritta.commands.CommandContext) {
^
This doesn't happen when running the class within IntelliJ IDEA, however it does happen when running the class on production.
While this YouTrack issue is related to fat JARs, this also can happen if you aren't using fat JARs (loading all the libraries via the startup classpath option or the Class-Path manifest option)
To fix this, or you can all your dependencies on your startup script like this:
-Dkotlin.script.classpath=jar1:jar2:jar3:jar4
Example:
java -Dkotlin.script.classpath=libs/dependency1.jar:libs/dependency2.jar:yourjar.jar -jar yourjar.jar
Or, if you prefer, set the property via code, using your Class-Path manifest option.
val path = this::class.java.protectionDomain.codeSource.location.path
val jar = JarFile(path)
val mf = jar.manifest
val mattr = mf.mainAttributes
// Yes, you SHOULD USE Attributes.Name.CLASS_PATH! Don't try using "Class-Path", it won't work!
val manifestClassPath = mattr[Attributes.Name.CLASS_PATH] as String
// The format within the Class-Path attribute is different than the one expected by the property, so let's fix it!
// By the way, don't forget to append your original JAR at the end of the string!
val propClassPath = manifestClassPath.replace(" ", ":") + ":Loritta-0.0.1-SNAPSHOT.jar"
// Now we set it to our own classpath
System.setProperty("kotlin.script.classpath", propClassPath)
While I didn't test this yet, in another unrelated answer it seems you can also supply your own classpath if you initialize the KotlinJsr223JvmLocalScriptEngine object yourself (as seen here)
I've been trying to create a new repository on a remote GraphDB server using RDF4J, but I'm having problems.
This runs, but is seemingly not correct
HTTPRepositoryConfig implConfig = new HTTPRepositoryConfig(address);
RepositoryConfig repoConfig = new RepositoryConfig("test", "test", implConfig);
Model m = new
However, based on the info I get from "edit repository" in the workbench, the result doesn't look right. All the values are empty, except for id and title.
This fails
I tried to copy the settings from an existing repository that I created on the workbench, but that failed with:
org.eclipse.rdf4j.repository.config.RepositoryConfigException:
Unsupported repository type: owlim:MonitorRepository
The code for that attempt is inspired by the one found here . Except that the config file is based on an existing repo, as explained above. I also tried to config file provided in the example, but that failed aswell:
org.eclipse.rdf4j.repository.config.RepositoryConfigException:
Unsupported Sail type: graphdb:FreeSail
Anyone got any tips?
UPDATE
As Henriette Harmse correctly pointed out, I should have provided my code, not simply linked to it. That way I might have discovered that I hadn't done a complete copy after all, but changed the important first bits that she points out in her answer. Full code below:
String address = "serveradr";
RemoteRepositoryManager repositoryManager = new RemoteRepositoryManager( address);
repositoryManager.initialize();
// Instantiate a repository graph model
TreeModel graph = new TreeModel();
InputStream config = Rdf4jHelper.class.getResourceAsStream("/repoconf2.ttl");
RDFParser rdfParser = Rio.createParser(RDFFormat.TURTLE);
rdfParser.setRDFHandler(new StatementCollector(graph));
rdfParser.parse(config, RepositoryConfigSchema.NAMESPACE);
config.close();
// Retrieve the repository node as a resource
Resource repositoryNode = graph.filter(null, RDF.TYPE, RepositoryConfigSchema.REPOSITORY).subjects().iterator().next();
// Create a repository configuration object and add it to the repositoryManager
RepositoryConfig repositoryConfig = RepositoryConfig.create(graph, repositoryNode);
It fails on the last line.
ANSWERED #HenrietteHarmse gives the correct method in her answer below. The error is caused by missing dependencies. Instead of using RDF4J directly, I should have used the graphdb-free-runtime.
There are a number of issues here:
(1) RepositoryManager repositoryManager = new LocalRepositoryManager(new File(".")); will create a repository where ever your Java application is running from.
(2) Changing to new LocalRepositoryManager(new File("$GraphDBInstall/data/repositories")) will cause the repository to be created under the control of GraphDB (assuming you have a local GraphDB instance) only if GraphDB is not running. If you start GraphDB after running your program, you will be able to see the repository in GraphDB workbench.
(3) What you need to do is get the repository manager of the remote GraphDB, which can be done with RepositoryManager repositoryManager = RepositoryProvider.getRepositoryManager("http://IPAddressOfGraphDB:7200");.
(4) In the way you have specified the config, you cause the RDF graph config to be lost. The correct way to specify it is:
RepositoryConfig repositoryConfig = RepositoryConfig.create(graph, repositoryNode);
repositoryManager.addRepositoryConfig(repositoryConfig);
(5) A minor issue is that GraphUtil.getUniqueSubject(...) has been deprecated, for which you can use something like the following:
Model model = graph.filter(null, RDF.TYPE, RepositoryConfigSchema.REPOSITORY);
Iterator<Statement> iterator = model.iterator();
if (!iterator.hasNext())
throw new RuntimeException("Oops, no <http://www.openrdf.org/config/repository#> subject found!");
Statement statement = iterator.next();
Resource repositoryNode = statement.getSubject();
EDIT on 20180408:
(5) Or you can use the compact option as #JeenBroekstra suggested in the comments:
Models.subject(
graph.filter(null, RDF.TYPE, RepositoryConfigSchema.REPOSITORY))
.orElseThrow(() -> new RuntimeException("Oops, no <http://www.openrdf.org/config/repository#> subject found!"));
EDIT on 20180409:
For convenience I have added the complete code example here.
EDIT on 20180410:
So the actual culprit turned out to be an incorrect pom.xml. The correct version is as below:
<dependency>
<groupId>com.ontotext.graphdb</groupId>
<artifactId>graphdb-free-runtime</artifactId>
<version>8.4.1</version>
</dependency>
I believe I just had the same issue. I used the example code from GraphDB Free for running with RDF4J as a remote service and ran into the same exception as you (Unsupported Sail type: graphdb:FreeSail). Henriette Harmse's answer does not directly address this issue but one should follow the suggestions given there to avoid running into issues later. In addition, based on a look into the RDF4J code you need the following dependency in your pom.xml file (assuming GraphDB 8.5):
<dependency>
<groupId>com.ontotext.graphdb</groupId>
<artifactId>graphdb-free-runtime</artifactId>
<version>8.5.0</version>
</dependency>
This seems to be because there is some kind of service loading going on with META-INF, which I frankly am not familiar with. Maybe someone can provide more details in the comments. The requirement for adding this dependency in also seems to be absent from the instructions, so if this works for you, please let me know. Others who followed the same steps we did should be able to resolve this issue as well then.
I would like to create a very simple Scala.js application with three modules under a project root like this:
project
-server
-client
-api
This is a cross project because I would like the source in the api module to be compiled by both Scala and Scala.js. I understand that this might nescessitate the need for two api modules (which share the same source code), jvm type and js type.
Source in the server module should only be compiled by Scala and source in the client module should only be compiled by Scala.js. The server module needs to depend on the api module (jvm type) whereas the client module needs to depend on the api module (js type).
Could someone please post the most basic build.sbt that shows how this can be achieved?
EDIT:
It looks like this is the way to do it:
lazy val commonSettings = Seq(
scalaVersion := "2.12.1"
)
lazy val projectRoot = project.in(file(".")).
aggregate(client, server).
settings(
name := "projectRoot"
)
lazy val server = project.in(file("server")).
settings(
commonSettings
).
dependsOn(apiJvm)
lazy val client = project.in(file("client")).
settings(
commonSettings
).
enablePlugins(ScalaJSPlugin).
dependsOn(apiJs)
lazy val api = crossProject.in(file(".")).
settings(
commonSettings
).
jvmSettings(
// Add JVM-specific settings here
).
jsSettings(
// Add JS-specific settings here
)
lazy val apiJvm = api.jvm.in(file("apiJVM"))
lazy val apiJs = api.js.in(file("apiJS"))
The only problem with this is the shared source goes into a folder called shared with a different module name in IntelliJ. It's a shame it isn't in an api folder with a module name of api. Presumably I shouldn't put any code in the apiJS and apiJVM modules that get created? They are only there to be used as dependencies?
I have simple scala application with spark dependencies. I am just trying to create spark context using the follwing code.
def main(args: Array[String]) {
var sparkConfig : SparkConf = new SparkConf() ;
sparkConfig.setAppName("ProxySQL").setMaster("local");
var sc = new SparkContext(sparkConfig)
}
When i try to run this code inside main - it throws security execption at new SparkContext(sparkConfig) with the following message .
Exception in thread "main" java.lang.SecurityException: class "javax.servlet.ServletRegistration"'s signer information does not match signer information of other classes in the same package .
At problem tab of Eclipse, it shows one warning
Description Path Resource Location Type
More than one scala library found in the build path (D:/workspaces/scala/scalaEclipse/eclipse/plugins/org.scala-ide.scala210.jars_4.0.0.201503031935/target/jars/scala-library.jar, C:/Users/prems.bist/.m2/repository/org/scala-lang/scala-library/2.10.4/scala-library-2.10.4.jar).This is not an optimal configuration, try to limit to one Scala library in the build path. SQLWrapper Unknown Scala Classpath Problem
I have scala installation of 2.10.4 at windows machine.
Scala compiler version set at eclipse is 2.10.5 . What is causing this security exception? Is this the incompatiblity version issues or what exaclty else? How would i solve it?
The problem was more or less related with conflicting dependencies.
The following task resolve my issue.
Go to Project
Build Path -> Order and Export tab -> Change the order of
javax.servlet jar
either to bottom or top.
This Resolved the problem.
Well,as I follow the suggestion:Go to Project Build Path -> Order and Export tab -> Change the order of javax.servlet jar either to bottom or top.
I find my buidpath libiaries was changed and it seems mussy(too many small libs),maybe this was caused by maven.
So I try to remove all of them and reimport the libs and chose Project -> Maven ->Update Project !
Now ,it goes well.
The name of your object with the main method shoul be the same as the setAppName("ProxySQL"), also you can exttend it with app and do not use main method, but this is only if you want I find it easy.
package spark.sample
import org.apache.spark.{ SparkContext, SparkConf }
/**
* Created by anquegi on 18/05/15.
*/
object ProxySQL {
def main(args: Array[String]) {
var sparkConfig: SparkConf = new SparkConf();
sparkConfig.setAppName("ProxySQL").setMaster("local");
var sc = new SparkContext(sparkConfig)
}
}
I normally use and object like for using Spark
package spark.sample
import org.apache.spark.{ SparkContext, SparkConf }
/**
* Created by anquegi on 18/05/15.
*/
object ProxySQL extends App {
val sparkConfig: SparkConf = new SparkConf();
sparkConfig.setAppName("ProxySQL").setMaster("local[4]");
val sc = new SparkContext(sparkConfig)
}
I prefer to use val instead of var
You can also setMaster with .setMaster("local[4]"), and not work only with one
It means you did not exclude the Servlet APIs from some dependency in your app, and one of them is bringing it in every time. Look at the dependency tree and exclude whatever brings in javax.servlet.
It should be already available in Spark, and the particular javax.servlet JAR from Oracle has signing info that you have to strip out, or simply exclude the whole thing.
some of the libraries were mention here
I have updated my controllers with to use play.data.Form.form() method instead of Controller.form(). When I try to run my application I get errors like:
error: method render in class create_user cannot be applied to given types;
return ok(create_user.render("", Form.form(CreateUserInfo.class), creator.get()));
required: String, play.api.data.Form, User
found: String, play.data.Form, User
It looks like the my templates expect to get play.api.data.Form instead of play.data.Form. Is there suppost to be any implicit conversion or should I update my templates to use play.data.Form?
If I'm using play.data.Form in my templates I am missing out on some of the features of play.api.data.Form, like the ability to request parameters through the apply method ( ex: createUserForm("username") )
The solution was provided by Guillaume Bort at the playframework google group.
I forgot to add javaCore as a dependency for my application after updating Build.scala. You have to explicitly add javaCore as a dependency in 2.1.
val appDependencies = Seq(
javaCore
)
And remember to start using play.Project instead of PlayProject:
val main = play.Project(appName, appVersion, appDependencies).settings(
// Add your own project settings here
)