Hi ,

I am trying to build Guvnor from the source but getting below exception , can some one please help.

org.apache.maven.reactor.MavenExecutionException: Cannot find parent: org.drools:drools for project: null:drools-guvnor:war:null for project null:drools-guvnor:war:null
        at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:378)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:292)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find parent: org.drools:drools for project: null:drools-guvnor:war:null for project null:drools-guvnor:war:null
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1370)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:821)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:506)
        at org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:198)
        at org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:583)
        at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:461)
        at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:365)
        ... 11 more
Caused by: org.apache.maven.project.ProjectBuildingException: POM 'org.drools:drools' not found in repository: Unable to download the artifact from any repository

  org.drools:drools:pom:5.0.0.SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)
 for project org.drools:drools
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:603)
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1366)
        ... 17 more
Caused by: org.apache.maven.artifact.resolver.ArtifactNotFoundException: Unable to download the artifact from any repository

  org.drools:drools:pom:5.0.0.SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)

        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:212)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:74)
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:556)
        ... 18 more
Caused by: org.apache.maven.wagon.ResourceDoesNotExistException: Unable to download the artifact from any repository
        at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:331)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:200)
        ... 20 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Fri Jan 23 15:20:05 EST 2009
[INFO] Final Memory: 1M/2M

Regards.
Ashish