René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"KeyFactory.kind() requires a cast... didn't expect that at all...","articleBody":"Code I had was:\n\n``` java\nKeyFactory keyFactory = datastore.newKeyFactory().kind(\"Person\");\n```\n\nError I was getting was:\n\n``` bash\n[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project hello-datastore: Compilation failure\n[ERROR] /usr/local/google/home/jjg/gcdjavasample/hello-datastore/src/main/java/org/geewax/hellodatastore/HelloDatastore.java:[19,58] error: incompatible types\n[ERROR] -\u003e [Help 1]\norg.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project hello-datastore: Compilation failure\n/usr/local/google/home/jjg/gcdjavasample/hello-datastore/src/main/java/org/geewax/hellodatastore/HelloDatastore.java:[19,58] error: incompatible types\n\n\n        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)\n        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)\n        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)\n        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)\n        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)\n        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)\n        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)\n        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)\n        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)\n        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)\n        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)\n        at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)\n        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)\n        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n        at java.lang.reflect.Method.invoke(Method.java:606)\n        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)\n        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)\n        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)\n        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)\nCaused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure\n/usr/local/google/home/jjg/gcdjavasample/hello-datastore/src/main/java/org/geewax/hellodatastore/HelloDatastore.java:[19,58] error: incompatible types\n\n\n        at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)\n        at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)\n        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)\n        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)\n        ... 19 more\n[ERROR] \n[ERROR] Re-run Maven using the -X switch to enable full debug logging.\n[ERROR] \n[ERROR] For more information about the errors and possible solutions, please read the following articles:\n[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException\n```\n\nChanging this to \n\n``` java\nKeyFactory keyFactory = (KeyFactory) datastore.newKeyFactory().kind(\"Person\");\n```\n\nfixed the problem\n\nHowever the docs at http://googlecloudplatform.github.io/gcloud-java/apidocs/com/google/gcloud/datastore/package-summary.html say I shouldn't need to do this :(\n","author":{"url":"https://github.com/jgeewax","@type":"Person","name":"jgeewax"},"datePublished":"2015-03-19T18:25:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/35/google-cloud-java/issues/35"}