Now we are going to try simple example of Groovy RESTfull service. There is one limitation, even if we use groovy, we should use Java style code and decline to use dynamic types, but of course we can use it in private methods and feilds. Create file JcrGroovyTest.groovy, in this example I save it in my home directory /home/andrew/JcrGroovyTest.groovy. Then, configure GroovyScript2RestLoaderPlugin as described in section Load script at startup time.
import javax.jcr.Node
import javax.jcr.Session
import javax.ws.rs.GET
import javax.ws.rs.Path
import javax.ws.rs.PathParam
import org.exoplatform.services.jcr.RepositoryService
import org.exoplatform.services.jcr.ext.app.ThreadLocalSessionProviderService
@Path("groovy/test/{repository}/{workspace}")
public class JcrGroovyTest {
private RepositoryService repositoryService
private ThreadLocalSessionProviderService sessionProviderService
public JcrGroovyTest(RepositoryService repositoryService,
ThreadLocalSessionProviderService sessionProviderService) {
this.repositoryService = repositoryService
this.sessionProviderService = sessionProviderService
}
@GET
@Path("{path:.*}")
public String nodeUUID(@PathParam("repository") String repository,
@PathParam("workspace") String workspace,
@PathParam("path") String path) {
Session ses = null
try {
ses = sessionProviderService.getSessionProvider(null).getSession(workspace, repositoryService.getRepository(repository))
Node node = (Node) ses.getItem("/" + path)
return node.getUUID() + "\n"
} finally {
if (ses != null)
ses.logout()
}
}
After configuration is done, start the server. If configuration is correct and script does not have syntax error, you should see next:
In the screenshot, we can see the service deployed.
First, create a folder via WebDAV in the repository production, folder name 'test'. Now, we can try access this service. Open another console and type command:
andrew@ossl:~> curl -u root:exo \ http://localhost:8080/rest/groovy/test/repository/production/test
Whe you try to execute this command, you should have exception, because JCR node '/test' is not referenceable and has not UUID. We can try add mixin mix:referenceable. To do this, add one more method in script. Open script from local source code /home/andrew/JcrGroovyTest.groovy, add following code and save file.
@POST
@Path("{path:.*}")
public void addReferenceableMixin(@PathParam("repository") String repository,
@PathParam("workspace") String workspace,
@PathParam("path") String path) {
Session ses = null
try {
ses = sessionProviderService.getSessionProvider(null).getSession(workspace, repositoryService.getRepository(repository))
Node node = (Node) ses.getItem("/" + path)
node.addMixin("mix:referenceable")
ses.save()
} finally {
if (ses != null)
ses.logout()
}
}
Now we can try to change script deployed on the server without server restart. Type in console next command:
andrew@ossl:~> curl -i -v -u root:exo \ -X POST \ --data-binary @JcrGroovyTest.groovy \ -H 'Content-type:script/groovy' \ http://localhost:8080/rest/script/groovy/update/repository/production/script/groovy/JcrGroovyTest.groovy
Node '/script/groovy/JcrGroovyTest.groovy' has property exo:autoload=true so script will be re-deployed automatically when script source code changed.
Script was redeployed, now try to access a newly created method.
andrew@ossl:~> curl -u root:exo \ -X POST \ http://localhost:8080/rest/groovy/test/repository/production/test
Method excution should be quiet, without output, traces, etc. Then we can try again get node UUID.
andrew@ossl:~> curl -u root:exo \ http://localhost:8080/rest/groovy/test/repository/production/test 1b8c88d37f0000020084433d3af4941f
Node UUID: 1b8c88d37f0000020084433d3af4941f
We don't need this scripts any more, so remove it from JCR.
andrew@ossl:~> curl -u root:exo \ http://localhost:8080/rest/script/groovy/delete/repository/production/script/groovy/JcrGroovyTest.groovy
