Maven dependencies for examples??

[Brad Cox]

I'm unable to compile the examples in eclipse/maven. I've run mavenDependencies.sh and verified they're installed in .m2.

But eclipse is unable to find the following symbols and I haven't been able to find them in any of the jars shown in the dox. 

Could someone please advise? Thanks!.

import com.complexible.common.openrdf.OpenRdfIO;
import com.complexible.common.openrdf.Graphs;
import com.complexible.common.protocols.server.Server;
import com.complexible.stardog.Stardog;

Partial pom:

<dependencies>

                      ...   

                  <dependency>
<groupId>com.complexible.common</groupId>
<artifactId>core</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>com.complexible.common</groupId>
<artifactId>openrdf</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.complexible.stardog</groupId>
<artifactId>api</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.complexible.stardog.protocols.snarl</groupId>
<artifactId>client</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.complexible.common.protocols.api</groupId>
<artifactId>client</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.complexible.stardog.reasoning.snarl</groupId>
<artifactId>client</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.complexible.stardog.search.snarl</groupId>
<artifactId>client</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.complexible.stardog.icv.snarl</groupId>
<artifactId>client</artifactId>
<version>2.1.3</version>
</dependency>
<dependency>
<groupId>com.googlecode.sli4j</groupId>
<artifactId>sli4j-slf4j-log4j</artifactId>
<version>2.0</version>
</dependency>
</dependencies>

[Brad Cox]

Kendal wrote that the open source java client would be available with usable dependencies in Stardog 2.0. We're up to 2.1.3 now but I don't see usable dependencies anywhere. Is this still on track?

[Mike Grove]

On Thu, Jun 19, 2014 at 12:10 PM, Brad Cox <brad...@gmail.com> wrote:

I'm unable to compile the examples in eclipse/maven. I've run mavenDependencies.sh and verified they're installed in .m2.

mavenDependencies currently only installs the client APIs into a local maven repo.  The examples, because they're standalone, require the server jars as well.

 

But eclipse is unable to find the following symbols and I haven't been able to find them in any of the jars shown in the dox. 

Could someone please advise? Thanks!.

import com.complexible.common.openrdf.OpenRdfIO;
import com.complexible.common.openrdf.Graphs;
import com.complexible.common.protocols.server.Server;
import com.complexible.stardog.Stardog;

Partial pom:

<dependencies>

                      ...   

                  <dependency>
<groupId>com.complexible.common</groupId>
<artifactId>core</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>com.complexible.common</groupId>
<artifactId>openrdf</artifactId>
<version>2.0.2</version>
</dependency>

This dependency should have OpenRdfIO and Graphs, I'm not sure why they would not be found.

The Server & Stardog classes are in the server directory in the distribution.  If you include the jars in that directory in your classpath, you should be good to go.

There was a similar question on the mailing list [1] about this recently.

Cheers,

Mike

[1] https://groups.google.com/a/clarkparsia.com/d/msg/stardog/Dcxr3aFVqyM/8GyOc02TGi4J

 

--
-- --
You received this message because you are subscribed to the C&P "Stardog" group.
To post to this group, send email to sta...@clarkparsia.com
To unsubscribe from this group, send email to
stardog+u...@clarkparsia.com
For more options, visit this group at
http://groups.google.com/a/clarkparsia.com/group/stardog?hl=en

[Brad Cox]

Adding all jars from the 3 server directories resolved the Server and  Stardog problems but OpenRdfIO and Graphs are nowhere to be found. 

Is there a getting started example that doesn't need so many dependencies? 

[Mike Grove]

On Thu, Jun 19, 2014 at 1:25 PM, Brad Cox <brad...@gmail.com> wrote:

Adding all jars from the 3 server directories resolved the Server and  Stardog problems but OpenRdfIO and Graphs are nowhere to be found. 

I just noticed the package names on OpenRdfIO and Graphs are not correct.  OpenRdfIO is not actually used in the examples in the distribution.

What code are you running?

Cheers,

Mike

 

Is there a getting started example that doesn't need so many dependencies? 

[Brad Cox]

Pasted from https://gist.github.com/mhgrove/1045573 which is linked from the dox.

[Brad Cox]

I have a working server. What I really want is sample code for how to issue sparql queries to it from java. I don't really want to be running an embedded server.

 

[Mike Grove]

On Thu, Jun 19, 2014 at 1:51 PM, Brad Cox <brad...@gmail.com> wrote:

I have a working server. What I really want is sample code for how to issue sparql queries to it from java. I don't really want to be running an embedded server.

The complete source code for all the examples is in the examples directory in the distribution.

For any example, you can simply remove the code that starts the embedded server and connect to your existing server since you have one running.  If you ran it with the default settings, you can use "http://localhost:5820" as the server URL in the ConnectionConfiguration.

Cheers,

Mike

[Brad Cox]

I got it to compile finally. From memory, I just changed Graph to GraphIO and had eclipse repair imports. 

[Brad Cox]

Is this the "code that starts the embedded server"? What should I change exactly?

 Server aServer = Stardog
                 .buildServer()
                 .bind(SNARLProtocolConstants.EMBEDDED_ADDRESS)
                 .start();

[Mike Grove]

On Thu, Jun 19, 2014 at 2:22 PM, Brad Cox <brad...@gmail.com> wrote:

Is this the "code that starts the embedded server"? What should I change exactly?

 Server aServer = Stardog
                 .buildServer()
                 .bind(SNARLProtocolConstants.EMBEDDED_ADDRESS)
                 .start();

Yes, that's the code that starts the embedded server.  You said you have a server running already, so there's no need to start an embedded server.  Just provide the URL of your existing server to the ConnectionConfiguration and you're all set.

Cheers,

Mike

[Brad Cox]

I reduced the example to just this where bcox is the dns name of the server; pasted from the server web interface.

 

public class TrySnarl
{
public static void main(String[] args) throws Exception
{
Connection aConn = ConnectionConfiguration
                .to("snarl://bcox:5820/dtraLocations")
                .credentials("admin", "admin")
                .connect();
return;
}
}

and it dies as follows. Same results with http: instead of snarl: Why would the connection be refused?

Exception in thread "main" io.netty.channel.ChannelException: connection refused
 at io.netty.channel.local.LocalChannel$LocalUnsafe.connect(LocalChannel.java:359)
 at io.netty.channel.DefaultChannelPipeline$HeadHandler.connect(DefaultChannelPipeline.java:1008)
 at io.netty.channel.DefaultChannelHandlerContext.invokeConnect(DefaultChannelHandlerContext.java:497)
 at io.netty.channel.DefaultChannelHandlerContext.connect(DefaultChannelHandlerContext.java:482)
 at io.netty.channel.DefaultChannelHandlerContext.connect(DefaultChannelHandlerContext.java:467)
 at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:847)
 at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:199)
 at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:165)
 at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354)
 at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
 at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
 at java.lang.Thread.run(Thread.java:744)

Enter code here...

 

[Brad Cox]

As Stephen Kahmann reported here earlier, the AdminConnectionConfiguration call works, the ConnectionConfiguration call fails as I reported earlier. 

public static void main(String[] args) throws Exception
{

AdminConnection dbms = AdminConnectionConfiguration.toServer("snarl://localhost:5820").credentials("admin", "admin").connect();
// dbms.createMemory("test");
dbms.close();
Connection aConn = ConnectionConfiguration.to("snarl://localhost:5820/dtraLocations").credentials("admin", "admin").connect();
return;
}

[Mike Grove]

On Thu, Jun 19, 2014 at 3:11 PM, Brad Cox <brad...@gmail.com> wrote:

I reduced the example to just this where bcox is the dns name of the server; pasted from the server web interface.

 

public class TrySnarl
{
public static void main(String[] args) throws Exception
{
Connection aConn = ConnectionConfiguration
                .to("snarl://bcox:5820/dtraLocations")

The ConnectionConfiguration#to method [1] specifies the name of the database to connect to whereas ConnectionConfiguration#server [2] specifies the URL of your server.  If you want to specify both at the same time, ie a full connection string, you can use the static method, from [3].

Cheers,

Mike

[1] http://docs.stardog.com/java/snarl/com/complexible/stardog/api/ConnectionConfiguration.html#to(java.lang.String)

[2] http://docs.stardog.com/java/snarl/com/complexible/stardog/api/ConnectionConfiguration.html#server(java.lang.String)

[3] http://docs.stardog.com/java/snarl/com/complexible/stardog/api/ConnectionConfiguration.html#from(java.lang.String)

 

                .credentials("admin", "admin")
                .connect();
return;
}
}

and it dies as follows. Same results with http: instead of snarl: Why would the connection be refused?

Exception in thread "main" io.netty.channel.ChannelException: connection refused
 at io.netty.channel.local.LocalChannel$LocalUnsafe.connect(LocalChannel.java:359)
 at io.netty.channel.DefaultChannelPipeline$HeadHandler.connect(DefaultChannelPipeline.java:1008)
 at io.netty.channel.DefaultChannelHandlerContext.invokeConnect(DefaultChannelHandlerContext.java:497)
 at io.netty.channel.DefaultChannelHandlerContext.connect(DefaultChannelHandlerContext.java:482)
 at io.netty.channel.DefaultChannelHandlerContext.connect(DefaultChannelHandlerContext.java:467)
 at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:847)
 at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:199)
 at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:165)
 at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354)
 at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
 at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
 at java.lang.Thread.run(Thread.java:744)

Enter code here...

 

[Fernando Hernandez]

You're passing a full connection string to 'ConnectionConfiguration.to()' when you should be passing a database name [1]. You should use 'ConnectionConfiguration.from()' in order to specify the full connection string.

[1] http://docs.stardog.com/java/snarl/com/complexible/stardog/api/ConnectionConfiguration.html

Cheers,

Fernando

[Brad Cox]

Thanks. That fixed it.

Dr. Brad J. Cox    Cell: 703-594-1883 Blog: http://bradjcox.blogspot.com

On Jun 19, 2014, at 8:28 PM, Mike Grove <mi...@clarkparsia.com> wrote: