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• How do I make solr/jetty find the installed slf4j jars in Ubuntu 12.04?

  - by J. Pablo Fernández

  I'm running Ubuntu 12.04's packaged Jetty in which I installed solr 4.3.1 (by copying the war file to /var/lib/jetty/webapps. When I start Jetty, I get this error: failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. The package libslf4j-java is installed, and the jars are in /usr/share/java: /usr/share/java/log4j-over-slf4j.jar /usr/share/java/slf4j-api.jar /usr/share/java/slf4j-jcl.jar /usr/share/java/slf4j-jdk14.jar /usr/share/java/slf4j-log4j12.jar /usr/share/java/slf4j-migrator.jar /usr/share/java/slf4j-nop.jar /usr/share/java/slf4j-simple.jar but somehow, Jetty and/or Solr are not finding them. How do I make them find them? or how do I install some other jars where jetty/solr would find them? The full error is: 88 [main] INFO org.mortbay.log - jetty-6.1.24 443 [main] INFO org.mortbay.log - Deploy /etc/jetty/contexts/javadoc.xml -> org.mortbay.jetty.handler.ContextHandler@cec0c5{/javadoc,file:/usr/share/jetty/javadoc} 522 [main] INFO org.mortbay.log - Extract file:/var/lib/jetty/webapps/solr.war to /var/cache/jetty/data/Jetty__8080_solr.war__solr__zdafkg/webapp 1501 [main] WARN org.mortbay.log - failed SolrRequestFilter: org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging 1501 [main] ERROR org.mortbay.log - Failed startup of context org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war} org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:105) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:532) at java.lang.Class.newInstance0(Class.java:374) at java.lang.Class.newInstance(Class.java:327) at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:92) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:662) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mortbay.start.Main.invokeMain(Main.java:194) at org.mortbay.start.Main.start(Main.java:534) at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:103) ... 36 more Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363) ... 37 more 1505 [main] WARN org.mortbay.log - failed org.mortbay.jetty.webapp.WebAppContext@5329c5{/solr,file:/var/lib/jetty/webapps/solr.war}: java.lang.NoClassDefFoundError: org/slf4j/Logger 1579 [main] WARN org.mortbay.log - failed ContextHandlerCollection@19d0a1: java.lang.NoClassDefFoundError: org/slf4j/Logger 1582 [main] INFO org.mortbay.log - Opened /var/log/jetty/2013_06_27.request.log 1582 [main] WARN org.mortbay.log - failed HandlerCollection@cbf30e: java.lang.NoClassDefFoundError: org/slf4j/Logger 1582 [main] ERROR org.mortbay.log - Error starting handlers java.lang.NoClassDefFoundError: org/slf4j/Logger at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2454) at java.lang.Class.getMethod0(Class.java:2697) at java.lang.Class.getMethod(Class.java:1622) at org.mortbay.log.Log.unwind(Log.java:228) at org.mortbay.log.Log.warn(Log.java:197) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:475) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mortbay.start.Main.invokeMain(Main.java:194) at org.mortbay.start.Main.start(Main.java:534) at org.mortbay.jetty.start.daemon.Bootstrap.start(Bootstrap.java:30) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:392) at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:363) ... 29 more

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• Parse java console output with awk

  - by Bob Rivers

  Hi, I'm trying to use awk to parse an output generated by a java application, but it isn't working. It seems that the command after the pipe isn't able to get/see the data throwed by the java app. I'm executing the following command (with the return generated by the command): [root@localhost]# java -jar jmxclient.jar usr:pass host:port java.lang:type=Threading ThreadCount 06/11/2010 15:46:37 -0300 org.archive.jmx.Client ThreadCount: 103 What I need it's only the last part of the string. So I'm tryng to use awk (with pipe at the end of the line |awk -F ':' '{print $4}': [root@localhost]# java -jar jmxclient.jar usr:pass host:port java.lang:type=Threading ThreadCount|awk -F ':' '{print $4}' But the output isn't being parsed. It throws the entire string: 06/11/2010 15:46:37 -0300 org.archive.jmx.Client ThreadCount: 103 I also tryed to use |cut -f4 -d":" with the same result: the string isn't parsed. So my question is, how do I parse the output in order to get just the number at the end of the string? TIA, Bob

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• Where on my C:/ or D:/ drive is the Windows startup directory ?

  - by Frank

  I am developing a Java program that needs to run when user turns on his PC, I was suggested to : create a .bat file @javaw -jar path/to/jar/Name.jar arguments drop this in the Windows startup directory My question is : Can my Java program save the above file into the Windows startup directory ? Where is this Windows startup directory on the C: or D: drive ? How can my Java app find out the location ? Is it the same on all versions of Windows ?

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• Java application delivery through CDN

  - by tuler

  We have a java application bundled as an applet or as webstart. The client java plugin caches the jar files on the client machine and downloads a new version if there is one. Is it possible to deliver this jar files using a CDN? What are the issues involved? Which CDNs would work for jar delivery? Is this different from static content delivery like images or video?

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• cygwin permissions for executing .bat files

  - by TomD

  Hey guys, I have a .bat file, which contains the following contents ... jar cfm myjar.jar manifest.txt *.class ... Which executes well under windows command prompt, but when executed under cygwin, I get the following C:\cygwin\home\user\path\to\folderjar cfm myjar.jar manifest.txt *.class Access is denied. I tried starting cygwin as administrator, but it does not help Would appreciate any suggestions Thanks

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• CentOS 6 and Sun/Oracle Java Issue

  - by user1710563

  I have a OpenVZ VPS running CentOS 6.3 64 bit and when I try to install JRE 7 64bit using the command: rpm -Uvh java.rpm It gives me this error: Preparing... ########################################### [100%] 1:jre ########################################### [100%] Unpacking JAR files... rt.jar... Error: Could not open input file: /usr/java/jre1.7.0_09/lib/rt.pack jsse.jar... Error: Could not open input file: /usr/java/jre1.7.0_09/lib/jsse.pack charsets.jar... Error: Could not open input file: /usr/java/jre1.7.0_09/lib/charsets.pack localedata.jar... Error: Could not open input file: /usr/java/jre1.7.0_09/lib/ext/localedata.pack I then tried the command: java -version And it gives me this error: Error occurred during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine Error: A fatal exception has occurred. Program will exit. Why does this happen if I have more than enough RAM on the VPS to run this (1GB)? Could it be an issue with the host node of the VPS? Thanks EDIT 1: Link to beancounter screenshot http://puu.sh/1xwxB EDIT 2: Link to htop screenshot http://puu.sh/1xwDl

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• java.util.zip.ZipException in Glassfish (v3) application deployment

  - by Kevin

  Hello, I've got a strange exception with my EJB3.1 application, a ZipException is thrown during the application deployment: [#|2010-05-15T16:01:44.688+0100|SEVERE|glassfish3.0.1|javax.enterprise.system.container.web.org.glassfish.web.loader|_ThreadID=22;_ThreadName=Thread-1;|WEB9051: Error trying to scan the classes at /Users/kevin/Documents/netbeans/WebAlbums/trunk/WebAlbums3/WebAlbums3-ea/dist/gfdeploy/WebAlbums3-Service.jar for annotations in which a ServletContainerInitializer has expressed interest java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:114) at java.util.jar.JarFile.<init>(JarFile.java:133) at java.util.jar.JarFile.<init>(JarFile.java:70) at org.glassfish.web.loader.ServletContainerInitializerUtil.getInitializerList(ServletContainerInitializerUtil.java:255) at org.apache.catalina.core.StandardContext.callServletContainerInitializers(StandardContext.java:5331) at com.sun.enterprise.web.WebModule.callServletContainerInitializers(WebModule.java:550) at org.apache.catalina.core.StandardContext.start(StandardContext.java:5263) at com.sun.enterprise.web.WebModule.start(WebModule.java:499) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:928) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:912) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:694) at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1947) at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1619) at com.sun.enterprise.web.WebApplication.start(WebApplication.java:90) at org.glassfish.internal.data.EngineRef.start(EngineRef.java:126) at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:241) at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:236) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:339) at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183) at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272) at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320) at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176) at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235) at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224) at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365) at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204) at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166) at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57) at com.sun.grizzly.ContextTask.run(ContextTask.java:69) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309) at java.lang.Thread.run(Thread.java:637) |#] I don't really know how to investigate this error; I know that it's not related to the glassfish installation (same problem on Ubuntu and Mac) ... I spot a 'null' in the classpath definition (log level fine), maybe that's the reason, but I don't know how to get rid of it ... [#|2010-05-15T16:01:44.672+0100|FINE|glassfish3.0.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=22;_ThreadName=Thread-1;ClassName=com.sun.enterprise.web.WebModuleListener;MethodName=configureJsp;| sysClasspath for WebAlbums3-ea#WebAlbums3-Servlet.war is /Users/kevin/apps/glassfishv3/glassfish/modules/antlr-repackaged.jar:...:/Users/kevin/apps/glassfishv3/glassfish/modules/gf-client-module.jar:/Users/kevin/apps/glassfishv3/glassfish/modules/javax.security.auth.message.jar:null:/Users/kevin/apps/glassfishv3/glassfish/modules/org.eclipse.persistence.antlr.jar:/Users/kevin/apps/glassfishv3/glassfish/domains/domain1/lib/classes:/Users/kevin/apps/glassfishv3/glassfish/domains/domain1/lib/RT-DB-mysql-connector-java-5.1.12-bin.jar:|#] (I'm using Netbeans 6.8, Glassfish v3, Servlet3, EJB 3.1, JPA/Hibernate) Thank you for your help

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• Error while deploying a web application in OSGI container using pax web

  - by RaulDM

  Hello I am trying to deploy a web application in a Felix container. I have all the required configuration done with my web app like the setting up of the manifest headers: Webapp-Context: Bundle-ClassPath: Bundle-Activator: Import-Package: Bundle-SymbolicName: etc The Pax bundles that I have dropped in the same container are: pax-web-service-0.6.0.jar pax-web-jsp-0.7.1.jar pax-web-extender-war-0.7.1.jar pax-logging-service-1.5.0.jar pax-logging-api-1.5.0.jar Though it had been written in the pax web site that pax-web-service is included in pax-war-extender, it seems without pax-web-service bundle, all other bundles become handicapped. I had removed the other pax bundles like pax-web-extender-whiteboard-0.7.1.jar pax-web-jetty-0.7.1.jar, as I have not seen any usefulness of those. The pax-web-jetty-0.7.1.jar even does not get start up. it has dependencies which it could not be able to resolve from any one of the bundle provided by PAX. My browser is displaying: HTTP ERROR 403 Problem accessing /adminmodule/. Reason: FORBIDDEN Powered by Jetty:// while the Console log says: [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - REQUEST /adminmodule/ on org.mortbay.jetty.HttpConnection@1e94001 [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.model.ServerModel - Matching [/adminmodule/]... [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.model.ServerModel - Path [/adminmodule/] matched to {pattern=/adminmodule/.*,model=ResourceModel{id=org.ops4j.pax.web.service.internal.model.ResourceModel-2,name=,urlPatterns=[/],alias=/,servlet=ResourceServlet{context=/adminmodule,alias=/,name=},initParams={},context=ContextModel{id=org.ops4j.pax.web.service.internal.model.ContextModel-1,name=adminmodule,httpContext=org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext@11710be,contextParams={webapp.context=adminmodule}}}} [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.HttpServiceContext - Handling request for [/adminmodule/] using http context [org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext@11710be] [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - sessionManager=org.mortbay.jetty.servlet.HashSessionManager@19c6163 [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - session=null [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - servlet= [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - chain=org.ops4j.pax.web.service.internal.model.FilterModel-3- [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - servlet holder= [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - call filter org.ops4j.pax.web.service.internal.model.FilterModel-3 [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.WelcomeFilesFilter - Apply welcome files filter... [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.WelcomeFilesFilter - Servlet path: / [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.service.internal.WelcomeFilesFilter - Path info: null [5884890@qtp-16567002-0 - /adminmodule/] INFO org.ops4j.pax.web.service.internal.HttpServiceContext - getting resource: [/adminmodule.jsp] [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext - Searching bundle [com.cisco.zaloni.gwt.admin [1]] for resource [/adminmodule.jsp], normalized to [adminmodule.jsp] [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext - Resource not found [5884890@qtp-16567002-0 - /adminmodule/] INFO org.ops4j.pax.web.service.internal.HttpServiceContext - found resource: null [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - call servlet [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext - Searching bundle [com.cisco.zaloni.gwt.admin [1]] for resource [/], normalized to [/] [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext - Resource found as url [bundle://1.0:1/] [5884890@qtp-16567002-0 - /adminmodule/] DEBUG org.mortbay.jetty - RESPONSE /adminmodule/ 403 It is really frustrating. please help. as I am new to OSGI. Raul

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• Why so Long time span in creating Session Factory?

  - by vijay.shad

  Hi My project is web application running in the tomcat container. This application is a spring framework based hibernate application. The problem with this is it takes a lot of time when creates session factory. here is the logs 2010-04-15 23:05:28,053 DEBUG [SessionFactoryImpl] Session factory constructed with filter configurations : {} 2010-04-15 23:05:28,053 DEBUG [SessionFactoryImpl] instantiating session factory with properties: {java.vendor=Sun Microsystems Inc., sun.java.launcher=SUN_STANDARD, catalina.base=/usr/local/InstalledPrograms/apache-tomcat-6.0.20, sun.management.compiler=HotSpot Tiered Compilers, catalina.useNaming=true, os.name=Linux, sun.boot.class.path=/usr/java/jdk1.6.0_17/jre/lib/resources.jar:/usr/java/jdk1.6.0_17/jre/lib/rt.jar:/usr/java/jdk1.6.0_17/jre/lib/sunrsasign.jar:/usr/java/jdk1.6.0_17/jre/lib/jsse.jar:/usr/java/jdk1.6.0_17/jre/lib/jce.jar:/usr/java/jdk1.6.0_17/jre/lib/charsets.jar:/usr/java/jdk1.6.0_17/jre/classes, java.util.logging.config.file=/usr/local/InstalledPrograms/apache-tomcat-6.0.20/conf/logging.properties, java.vm.specification.vendor=Sun Microsystems Inc., hibernate.generate_statistics=true, java.runtime.version=1.6.0_17-b04, hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider, user.name=root, shared.loader=, tomcat.util.buf.StringCache.byte.enabled=true, hibernate.connection.release_mode=auto, user.language=en, java.naming.factory.initial=org.apache.naming.java.javaURLContextFactory, sun.boot.library.path=/usr/java/jdk1.6.0_17/jre/lib/i386, java.version=1.6.0_17, java.util.logging.manager=org.apache.juli.ClassLoaderLogManager, user.timezone=Canada/Pacific, sun.arch.data.model=32, java.endorsed.dirs=/usr/local/InstalledPrograms/apache-tomcat-6.0.20/endorsed, sun.cpu.isalist=, sun.jnu.encoding=UTF-8, file.encoding.pkg=sun.io, package.access=sun.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.,sun.beans., file.separator=/, java.specification.name=Java Platform API Specification, java.class.version=50.0, user.country=US, java.home=/usr/java/jdk1.6.0_17/jre, java.vm.info=mixed mode, os.version=2.6.18-128.el5, path.separator=:, java.vm.version=14.3-b01, hibernate.jdbc.batch_size=25, java.awt.printerjob=sun.print.PSPrinterJob, sun.io.unicode.encoding=UnicodeLittle, package.definition=sun.,java.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper., java.naming.factory.url.pkgs=org.apache.naming, sun.rmi.dgc.client.gcInterval=3600000, user.home=/root, java.specification.vendor=Sun Microsystems Inc., java.library.path=/usr/java/jdk1.6.0_17/jre/lib/i386/server:/usr/java/jdk1.6.0_17/jre/lib/i386:/usr/java/jdk1.6.0_17/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib, java.vendor.url=http://java.sun.com/, java.vm.vendor=Sun Microsystems Inc., hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect, sun.rmi.dgc.server.gcInterval=3600000, common.loader=${catalina.home}/lib,${catalina.home}/lib/*.jar, java.runtime.name=Java(TM) SE Runtime Environment, java.class.path=:/usr/local/InstalledPrograms/apache-tomcat-6.0.20/bin/bootstrap.jar, hibernate.bytecode.use_reflection_optimizer=false, java.vm.specification.name=Java Virtual Machine Specification, java.vm.specification.version=1.0, catalina.home=/usr/local/InstalledPrograms/apache-tomcat-6.0.20, sun.cpu.endian=little, sun.os.patch.level=unknown, hibernate.cache.use_query_cache=true, hibernate.connection.provider_class=org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider, java.io.tmpdir=/usr/local/InstalledPrograms/apache-tomcat-6.0.20/temp, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, server.loader=, os.arch=i386, java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment, java.ext.dirs=/usr/java/jdk1.6.0_17/jre/lib/ext:/usr/java/packages/lib/ext, user.dir=/, line.separator=, java.vm.name=Java HotSpot(TM) Server VM, hibernate.cache.use_second_level_cache=true, file.encoding=UTF-8, java.specification.version=1.6, hibernate.show_sql=true} 2010-04-15 23:08:53,516 DEBUG [AbstractEntityPersister] Static SQL for entity: com.vsd.model.Order There you can see the time delay of more than 3 mins in executing these processes. My database is mysql and database server is running on the local machine only. The container environment is Centos Linux system. I am clueless about why it takes that much of time in executing these process, But when i do the same task from under eclipse it does not take that much of time. Development environment is Windows.

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• Eclipse Execute from Home - Eclipse.org Version

  - by sayth

  Due to a lot of minor errors with the eclipse from the repository( cannot install mylyn or pydev due to unmet dependencies) I manually downloaded from eclipse.org. I have not had this problem before but when I go to ~/eclipse (where I extracted the zip) and try to run eclipse it will not run. From the command line I just get eclipse not installed use sudo apt-get to install it. I know I have java installed. sayth@sayth-TravelMate-5740G:~$ java -version java version "1.6.0_23" OpenJDK Runtime Environment (IcedTea6 1.11pre) (6b23~pre10-0ubuntu5) OpenJDK Server VM (build 20.0-b11, mixed mode) how can I get eclipse to load normally? Edit I removed the openjdk and installed oracle java to /usr/java I then create a symbolic link sayth@sayth-TravelMate-5740G:~/eclipse$ sudo ln -s /usr/java ~/eclipse/jre However still the error. sayth@sayth-TravelMate-5740G:~/eclipse$ java eclipse.jar Exception in thread "main" java.lang.NoClassDefFoundError: eclipse/jar Caused by: java.lang.ClassNotFoundException: eclipse.jar at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) Could not find the main class: eclipse.jar. Program will exit.

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• Running ADF Essentials in Tomcat

  - by Rodrigues, Raphael

  Oracle released a few days ago ADF Essentials, which is a free version of its Oracle ADF Framework. Oracle ADF Essentials can run on the Glassfish Application Server, well explained by Shay here  . Glassfish is also certified to run ADF Essentials Application. However, It could be possible to run ADF Essentials Applications in a Java EE Container. So, I’ll describe the steps to run the ADF Faces Rich Client demo application into a Tomcat 7. Before we start, you should download the files: • Apache Tomcat 7 : http://tomcat.apache.org/download-70.cgi • Oracle ADF Essentials 11.1.2.3 : http://www.oracle.com/technetwork/developer-tools/adf/downloads/index.html • Oracle ADF Faces Components Demo 11.1.2.3: http://www.oracle.com/technetwork/developer-tools/adf/downloads/index.html Steps: 1. Extract your tomcat 7. In my case, I choose D:\ apache-tomcat-7.0.29 2. Extract ADF Essentials zip file inside the %TOMCAT_HOME%\lib 3. Put the rcf-dvt-demo.war file inside the %TOMCAT_HOME%\webapps 4. Open the file %TOMCAT_HOME%\bin\catalina.bat (or .sh if you’re in linux environment) and add in the end of the line ‘set JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG%’ this -Xms1024m -Xmx1024m If you don’t do this, probably when you start you’ll see a OutOfMemory error. 5. Here is the little trick, tomcat does not come with jsf jar’s, so you have to put there. So, I went to the Oracle Jdeveloper 11.1.2 instalation and search for this files: • jsf-api.jar • jsf-impl.jar • glassfish.jstl_1.2.0.1.jar 6. You’re ready to start tomcat in %TOMCAT_HOME%\bin\startup.bat If everything is fine, you will be able to open your favourite browser and type http://localhost:8080/rcf-dvt-demo/faces/index.jspx

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• Spring Roo Database Reverse Engineer with Oracle

  - by kerry

  So you are trying to reverse engineer an Oracle database with roo? Unfortunately, due to licensing restrictions with the Oracle JDBC Drivers, this is a little difficult. There are a few blog posts and forum threads that address the problem but I figured I would post what worked for me here. First, you need to download the appropriate Oracle Drivers from Oracle. The required login, stringent password requirements, nosy registration form, and general system instability made this a pretty painful step for me. I’d also like to say that companies that have password requirements that don’t allow symbols (or any other non-standard requirement) have a special place in my heart. Having to recover my password every time I go to your site virtually guarantees I will only go there when I absolutely have to (not often). Anyways, once you have it downloaded you need to install is with maven: mvn install:install-file -Dfile=~/Downloads/ojdbc6.jar -DgroupId=com.oracle -DartifactId=ojdbc6 -Dversion=11.2.0.3 -Dpackaging=jar -DgeneratePom=true Here comes the fun part. You need to create an osgi wrapper for the driver to install it in roo. Otherwise, roo cannot see the driver. Create a new folder and put the contents of the oracle roo addon pom gist I created. Now build it with maven. You may want to change some of the artifact ids and dependencies for your particular situation. mvn package No open a roo shell and execute the following command: osgi install --url file:///Users/me/my-osgi-project/target/the-jar-it-built.jar Now run (in roo): jpa setup --provider HIBERNATE --database ORACLE dependency remove --groupId com.oracle --artifactId ojdbc14 --version 10.2.0.2 dependency add --groupId com.oracle --artifactId ojdbc6 --version 11.2.0.3 database properties set --key database.driverClassName --value oracle.jdbc.OracleDriver database properties set --key database.url --value jdbc:oracle:thin:@%YOUR_CONNECTION_INFO% database properties set --key database.username --value %YOUR_USERNAME% database properties set --key database.password --value %YOUR_PASSWORD% database reverse engineer --schema %YOUR_SCHEMA% --package ~.domain If you have any package loading exceptions when running the reverse engineer command you can uninstall the osgi bundle, set the package to optional in the osgi pom in the IncludedPackages tag (javax.some.package.*;resolution:=optional) rebuild, then reinstall in roo.

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• Java Not Recognized As Default Application

  - by John

  I just installed java according to this article, and 'java -version' displays java version "1.7.0_07" Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode) 'update-alternatives --config java' returns this: There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ------------------------------------------------------------ 0 /usr/bin/gij-4.6 1046 auto mode 1 /usr/bin/gij-4.6 1046 manual mode * 2 /usr/local/java/jdk1.7.0_07/bin/java 1 manual mode Press enter to keep the current choice[*], or type selection number: with update-alternatives --config javac (or javaws) returning similarly. however java isn't listed in the default applications menu when I click on a .jar file and go to "open with application". I tried to install java this way, and on the update-alternatives part of the command returned me: /etc/alternatives/[java,javac,javaws] is dangling, it will be updated with best choice I just confirmed that I can use java, as 'java -jar file.jar' does work. Just figured that I'd mention it, don't know why I didn't before, but when I right click on a .jar file, java 7 run-time isn't even listed there, it seems that the file-manager isn't recognizing it as a program, but it is there, and it does work...

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• Oops! installer misses a lib during OIF 11g install under some conditions

  - by user12674042

  If you installed OIF 11g on OEL 6.2 64bit and passed all the interesting gotchas but got stumped by this error in the WLS admin logs, and Enterprise Manager refuses to start correctly after what appeared to be a full successful install and configuration:  ...  <User defined listener oracle.sysman.eml.app.ContextInitializer failed: java.lang.NoClassDefFoundError: HTTPClient/ProtocolNotSuppException. java.lang.NoClassDefFoundError: HTTPClient/ProtocolNotSuppException     at oracle.sysman.eml.app.ContextInitializer.contextInitialized(ContextInitializer.java:1035) ... Caused By: java.lang.ClassNotFoundException: HTTPClient.ProtocolNotSuppException     at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:297)     at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:270) ... <Error> <Deployer> <BEA-149231> <Unable to set the activation state to true for the application 'em'. weblogic.application.ModuleException:     at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1520) ... The problem is the installer fails to properly place a required jar (http_client.jar) in the appropriate location for your WLS domain.   Assuming you have Oracle DB installed on the same server, just copy the jar to the lib folder in your domain, e.g. if your domain is IDMDomain and middleware install location is /u01/Middleware then cp /u01/app/oracle/product/11.2.0/db_1/oui/jlib/http_client.jar \   /u01/Middleware/user_projects/domains/IDMDomain/lib and restart your admin WLS.  Enterprise Manager will start to work.  Hopefully this will save others some time while on the bleeding edge...

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• HttpPost works in Java project, not in Android

  - by dave.c

  I've written some code for my Android device to login to a web site over https and parse some data out of the resulting pages. An HttpGet happens first to get some info needed for login, then an HttpPost to do the actual login process. The code below works great in a Java project within Eclipse which has the following Jar files on the build path: httpcore-4.1-beta2.jar, httpclient-4.1-alpha2.jar, httpmime-4.1-alpha2.jar, commons-logging-1.1.1.jar. public static MyBean gatherData(String username, String password) { MyBean myBean = new MyBean(); try { HttpResponse response = doHttpGet(URL_PAGE_LOGIN, null, null); System.out.println("Got login page"); String content = EntityUtils.toString(response.getEntity()); String token = ContentParser.getToken(content); String cookie = getCookie(response); System.out.println("Performing login"); System.out.println("token = "+token +" || cookie = "+cookie); response = doLoginPost(username,password,cookie, token); int respCode = response.getStatusLine().getStatusCode(); if (respCode != 302) { System.out.println("ERROR: not a 302 redirect!: code is \""+ respCode+"\""); if (respCode == 200) { System.out.println(getHeaders(response)); System.out.println(EntityUtils.toString(response.getEntity()).substring(0, 500)); } } else { System.out.println("Logged in OK, loading account home"); // redirect handler and rest of parse removed } }catch (Exception e) { System.out.println("ERROR in gatherdata: "+e.toString()); e.printStackTrace(); } return myBean; } private static HttpResponse doHttpGet(String url, String cookie, String referrer) { try { HttpClient client = new DefaultHttpClient(); client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); client.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8"); HttpGet httpGet = new HttpGet(url); httpGet.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); httpGet.setHeader(HEADER_USER_AGENT,HEADER_USER_AGENT_VALUE); if (referrer != null && !referrer.equals("")) httpGet.setHeader(HEADER_REFERER,referrer); if (cookie != null && !cookie.equals("")) httpGet.setHeader(HEADER_COOKIE,cookie); return client.execute(httpGet); } catch (Exception e) { e.printStackTrace(); throw new ConnectException("Failed to read content from response"); } } private static HttpResponse doLoginPost(String username, String password, String cookie, String token) throws ClientProtocolException, IOException { try { HttpClient client = new DefaultHttpClient(); client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); client.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8"); HttpPost post = new HttpPost(URL_LOGIN_SUBMIT); post.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); post.setHeader(HEADER_USER_AGENT,HEADER_USER_AGENT_VALUE); post.setHeader(HEADER_REFERER, URL_PAGE_LOGIN); post.setHeader(HEADER_COOKIE, cookie); post.setHeader("Content-Type","application/x-www-form-urlencoded"); List<NameValuePair> formParams = new ArrayList<NameValuePair>(); formParams.add(new BasicNameValuePair("org.apache.struts.taglib.html.TOKEN", token)); formParams.add(new BasicNameValuePair("showLogin", "true")); formParams.add(new BasicNameValuePair("upgrade", "")); formParams.add(new BasicNameValuePair("username", username)); formParams.add(new BasicNameValuePair("password", password)); formParams.add(new BasicNameValuePair("submit", "Secure+Log+in")); UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams,HTTP.UTF_8); post.setEntity(entity); return client.execute(post); } catch (Exception e) { e.printStackTrace(); throw new ConnectException("ERROR in doLoginPost(): "+e.getMessage()); } } The server (which is not under my control) returns a 302 redirect when the login was successful, and 200 if it fails and re-loads the login page. When run with the above Jar files I get the 302 redirect, however if I run the exact same code from an Android project with the 1.6 Android Jar file on the build path I get the 200 response from the server. I get the same 200 response when running the code on my 2.2 device. My android application has internet permissions, and the HttpGet works fine. I'm assuming that the problem lies in the fact that HttpPost (or some other class) is different in some significant way between the Android Jar version and the newer Apache versions. I've tried adding the Apache libraries to the build path of the Android project, but due to the duplicate classes I get messages like: INFO/dalvikvm(390): DexOpt: not resolving ambiguous class 'Lorg/apache/http/impl/client/DefaultHttpClient;' in the log. I've also tried using a MultipartEntity instead of the UrlEncodedFormEntity but I get the same 200 result. So, I have a few questions: - Can I force the code running under android to use the newer Apache libraries in preference to the Android versions? - If not, does anyone have any ideas how can I alter my code so that it works with the Android Jar? - Are there any other, totally different approaches to doing an HttpPost in Android? - Any other ideas? I've read a lot of posts and code but I'm not getting anywhere. I've been stuck on this for a couple of days and I'm at a loss how to get the thing to work, so I'll try anything at this point. Thanks in advance.

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• Problem with launching JAGUAR in R

  - by Gerry

  Windows XP, R 2.11.1, Java JRE6 I just installed the Jaguar package. From an R console, I can do this: > library(JGR) Loading required package: rJava Loading required package: JavaGD Loading required package: iplots Please use the corresponding JGR launcher to start JGR. Run JGR() for details. You can also use JGR(update=TRUE) to update JGR. and so JGR appears to be correctly installed. JGR() yields On Windows JGR must be started using the JGR.exe launcher. Please visit http://www.rosuda.org/JGR/ to download it. > I'm not sure how to run Jaguar - I know I have to run jgr.exe - but should R be already open? If so, should the JGR library be already loaded? I've tried all of these, and what seems to happen regardless is a console window opens briefly, then disappears. I've run jrg --debug, with no apparent error message: (same file regardless of choice made above). What should I be doing? Thanks! System: Version 5.1 (build 2600), platform 2 [Service Pack 3] JGR loader version 1.61 (build Jul 23 2008) parseParams> 1 parameters parsed. parseParams par 10> "--debug" > rhome="C:\Program Files\R\R-2.11.1" > srhome="C:\PROGRA~1\R\R-211~1.1" getPkgVersion(JGR): 010702 getPkgVersion(rJava): 000805 getPkgVersion(JavaGD): 000503 getPkgVersion(iplots): 010103 Loading preferences from "C:\Documents and Settings\gblais\.JGRprefsrc" > javakey="Software\JavaSoft\Java Runtime Environment\1.6" > javah="C:\Program Files\Java\jre6" > tp="C:\Perl\site\bin;C:\Perl\bin;C:\PHP\;C:\Program Files\MiKTeX 2.8\miktex\bin;C:\Python26\Lib\site-packages\PyQt4;C:\Program Files\Tcl\bin;C:\oracle\product\10.2.0\client_2\BIN;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Support Tools\;c:\belfry;c:\belfry\usr\local\wbin;C:\WINDOWS;C:\WINDOWS\System32;C:\WINDOWS\System32\WBEM;c:\Program Files\QuickTime\QTSystem\;C:\Program Files\SlikSvn\bin\;c:\progra~1\Microsoft Visual Studio 9.0\VC\bin\" Got RuntimeLib from registry, using "C:\Program Files\Java\jre6\bin\client;" PATH prefix. Java home: "C:\Program Files\Java\jre6" R home: "C:\Program Files\R\R-2.11.1" JAR files: "-Drjava.class.path=C:\PROGRA~1\R\R-211~1.1\library\rJava\jri\JRI.jar;C:\PROGRA~1\R\R-211~1.1\library\iplots\java\iplots.jar;C:\PROGRA~1\R\R-211~1.1\library\JGR\java\JGR.jar;C:\PROGRA~1\R\R-211~1.1\etc\classes;C:\PROGRA~1\R\R-211~1.1\etc\classes.jar" desired PATH: "C:\Program Files\Java\jre6\bin\client;C:\Program Files\Java\jre6\bin\client;C:\Program Files\Java\jre6\bin;C:\Program Files\R\R-2.11.1\bin;C:\PROGRA~1\R\R-211~1.1\library\rJava\jri;C:\Perl\site\bin;C:\Perl\bin;C:\PHP\;C:\Program Files\MiKTeX 2.8\miktex\bin;C:\Python26\Lib\site-packages\PyQt4;C:\Program Files\Tcl\bin;C:\oracle\product\10.2.0\client_2\BIN;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Support Tools\;c:\belfry;c:\belfry\usr\local\wbin;C:\WINDOWS;C:\WINDOWS\System32;C:\WINDOWS\System32\WBEM;c:\Program Files\QuickTime\QTSystem\;C:\Program Files\SlikSvn\bin\;c:\progra~1\Microsoft Visual Studio 9.0\VC\bin\" actual PATH: "C:\Program Files\Java\jre6\bin\client;C:\Program Files\Java\jre6\bin\client;C:\Program Files\Java\jre6\bin;C:\Program Files\R\R-2.11.1\bin;C:\PROGRA~1\R\R-211~1.1\library\rJava\jri;C:\Perl\site\bin;C:\Perl\bin;C:\PHP\;C:\Program Files\MiKTeX 2.8\miktex\bin;C:\Python26\Lib\site-packages\PyQt4;C:\Program Files\Tcl\bin;C:\oracle\product\10.2.0\client_2\BIN;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Support Tools\;c:\belfry;c:\belfry\usr\local\wbin;C:\WINDOWS;C:\WINDOWS\System32;C:\WINDOWS\System32\WBEM;c:\Program Files\QuickTime\QTSystem\;C:\Program Files\SlikSvn\bin\;c:\progra~1\Microsoft Visual Studio 9.0\VC\bin\" getenv PATH: "C:\Perl\site\bin;C:\Perl\bin;C:\PHP\;C:\Program Files\MiKTeX 2.8\miktex\bin;C:\Python26\Lib\site-packages\PyQt4;C:\Program Files\Tcl\bin;C:\oracle\product\10.2.0\client_2\BIN;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Support Tools\;c:\belfry;c:\belfry\usr\local\wbin;C:\WINDOWS;C:\WINDOWS\System32;C:\WINDOWS\System32\WBEM;c:\Program Files\QuickTime\QTSystem\;C:\Program Files\SlikSvn\bin\;c:\progra~1\Microsoft Visual Studio 9.0\VC\bin\" argv[0]:C:\PROGRA~1\Java\jre6\bin\java.exe argv[1]:-Drjava.class.path=C:\PROGRA~1\R\R-211~1.1\library\rJava\jri\JRI.jar;C:\PROGRA~1\R\R-211~1.1\library\iplots\java\iplots.jar;C:\PROGRA~1\R\R-211~1.1\library\JGR\java\JGR.jar;C:\PROGRA~1\R\R-211~1.1\etc\classes;C:\PROGRA~1\R\R-211~1.1\etc\classes.jar argv[2]:-Xmx512m argv[3]:-cp argv[4]:C:\PROGRA~1\R\R-211~1.1\library\rJava\java\boot argv[5]:-Drjava.path=C:\PROGRA~1\R\R-211~1.1\library\rJava argv[6]:-Dmain.class=org.rosuda.JGR.JGR argv[7]:-Djgr.load.pkgs=yes argv[8]:-Djgr.loader.ver=1.61 argv[9]:RJavaClassLoader argv[10]:--debug

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• Multi-module web project with Spring and Maven

  - by Johan Sjöberg

  Assume we have a few projects, each containing some web resources (e.g., html pages). parent.pom +- web (war) +- web-plugin-1 (jar) +- web-plugin-2 (jar) ... Let's say web is the deployable war project which depends on the known, but selectable, set of plugins. What is a good way to setup this using Spring and maven? Let the plugins be war projects and use mavens poor support for importing other war projects Put all web-resource for all plugins in the web project Add all web-resources to the classpath of all jar web-plugin-* dependencie and let spring read files from respective classpath? Other? I've previously come from using #1, but the copy-paste semantics of war dependencies in maven is horrible.

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• Exception while running an EJB program [closed]

  - by rajesh

  I'm a newbie to JEE. I'm trying a sample EJB3 program given in this website. while trying to run the client program, I get an exception like this [JBossManagedConnectionPool] Throwable while attempting to get a new connection: null org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Failed to register driver for: com.mysql.jdbc.Driver; - nested throwable: (java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from BaseClassLoader@4c19dd{VFSClassLoaderPolicy@35fd58{name=vfszip:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/FirstJPAproject.jar/ domain=ClassLoaderDomain@17380fc{name=DefaultDomain parentPolicy=BEFORE parent=org.jboss.bootstrap.NoAnnotationURLClassLoader@76cbf7} roots=[MemoryContextHandler@9160338[path= context=vfsmemory://3j001-rho3wm-h8v3wfs4-1-h8v5pkwn-9u real=vfsmemory://3j001-rho3wm-h8v3wfs4-1-h8v5pkwn-9u], DelegatingHandler@25335794[path=FirstJPAproject.jar context=file:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/ real=file:/home/rajesh/workspace/jboss-5.1.0.GA/server/default/deploy/FirstJPAproject.jar] I'm using Jboss5.1.0 and ejb 3.0 Please help me to get rid of this.

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• org.openide.awt.ColorComboBox

  - by Geertjan

  It's the time of year when a lot of NetBeans Platform tutorials are being reviewed, revised, and rewritten. Today I'm looking at the NetBeans Platform Paint Application Tutorial. Suddenly I remembered seeing something in a recent API Changes document about a new class, ColorComboBox. That means I can make the tutorial a lot simpler, since Tim Boudreau's external ColorChooser.jar is now superfluous. Here's what the ColorComboBox looks like: It works perfectly. Of course, the nice thing about using that JAR was that it showed the user how to incorporate external JARs, but I'll make sure to make a note of that in the tutorial, along the lines of "If you don't like the NetBeans Platform color combobox, and would like to replace it with your own, such as Tim's ColorChooser.jar or a JavaFX color chooser, take the following steps." In short, if you're using NetBeans APIs, write this on your ceiling above your bed: http://bits.netbeans.org/dev/javadoc/apichanges.html, check that page regularly (mark it in your calendar to do first thing every Monday morning) and you'll be aware of the latest changes as they happen.

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• Including slick2d or slick-util in maven build?

  - by BotskoNet

  I'm converting a project to lwjgl and trying to use slick-util as well. There's no slick-util maven repo anywhere (nor slick2d itself anymore). I've included local dependancies before using <dependency> <groupId>org.newdawn</groupId> <artifactId>slick</artifactId> <version>237</version> <scope>system</scope> <systemPath>${project.basedir}/lib/slick-util.jar</systemPath> </dependency> The maven package process runs without issue, but when I try to run the jar, it errors out with a ClassNotFoundException. There's no mention of slick-util in the manifest and I can't find out how to make my game load that jar properly. Side question: how do I ensure when I distribute my applications, the game properly installs these libraries?

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• How to associate an icon with a shell script?

  - by Peter

  Environment: Ubuntu 11.10 I have a Java application as a jar file. I have created a batch file that contains the following line: java -jar ~/MyApp.jar When I execute this batch file, the Java application works as expected. To create a desktop link, I copied this batch file into my "Desktop" folder. This results in an icon appearing on the desktop. However, the icon shows "Java" on it. I would like to associate a different icon to this desktop link. Would appreciate it if someone can point me in the right direction.

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• NetBeans ??????????????????

  - by user13137856

  NetBeans IDE ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????NetBeans ??????????????????????????????????????? % netbeans --locale en ??????????????????????????????????????????????????? $HOME/.netbeans $HOME/.cache/netbeans ?????? --userdir ????????????????????? % netbeans --locale en --userdir /tmp/my_newuserdir NetBeans ???????????????????????????????????????NetBeans ???????????????? jar ????????????????????????????????? git ??????????????????????2?????????? NetBeans ????????????(??????????????????????????) ide/modules/locale/org-netbeans-libs-git_ja.jar ide/modules/locale/org-netbeans-modules-git_ja.jar ??? FAQ????????: NetBeans ? UI ???????????????????????? ????????????????????????????? NetBeans ??????????????????

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• How to Run Low-Cost Minecraft on a Raspberry Pi for Block Building on the Cheap

  - by Jason Fitzpatrick

  We’ve shown you how to run your own blocktastic personal Minecraft server on a Windows/OSX box, but what if you crave something lighter weight, more energy efficient, and always ready for your friends? Read on as we turn a tiny Raspberry Pi machine into a low-cost Minecraft server you can leave on 24/7 for around a penny a day. Why Do I Want to Do This? There’s two aspects to this tutorial, running your own Minecraft server and specifically running that Minecraft server on a Raspberry Pi. Why would you want to run your own Minecraft server? It’s a really great way to extend and build upon the Minecraft play experience. You can leave the server running when you’re not playing so friends and family can join and continue building your world. You can mess around with game variables and introduce mods in a way that isn’t possible when you’re playing the stand-alone game. It also gives you the kind of control over your multiplayer experience that using public servers doesn’t, without incurring the cost of hosting a private server on a remote host. While running a Minecraft server on its own is appealing enough to a dedicated Minecraft fan, running it on the Raspberry Pi is even more appealing. The tiny little Pi uses so little resources that you can leave your Minecraft server running 24/7 for a couple bucks a year. Aside from the initial cost outlay of the Pi, an SD card, and a little bit of time setting it up, you’ll have an always-on Minecraft server at a monthly cost of around one gumball. What Do I Need? For this tutorial you’ll need a mix of hardware and software tools; aside from the actual Raspberry Pi and SD card, everything is free. 1 Raspberry Pi (preferably a 512MB model) 1 4GB+ SD card This tutorial assumes that you have already familiarized yourself with the Raspberry Pi and have installed a copy of the Debian-derivative Raspbian on the device. If you have not got your Pi up and running yet, don’t worry! Check out our guide, The HTG Guide to Getting Started with Raspberry Pi, to get up to speed. Optimizing Raspbian for the Minecraft Server Unlike other builds we’ve shared where you can layer multiple projects over one another (e.g. the Pi is more than powerful enough to serve as a weather/email indicator and a Google Cloud Print server at the same time) running a Minecraft server is a pretty intense operation for the little Pi and we’d strongly recommend dedicating the entire Pi to the process. Minecraft seems like a simple game, with all its blocky-ness and what not, but it’s actually a pretty complex game beneath the simple skin and required a lot of processing power. As such, we’re going to tweak the configuration file and other settings to optimize Rasbian for the job. The first thing you’ll need to do is dig into the Raspi-Config application to make a few minor changes. If you’re installing Raspbian fresh, wait for the last step (which is the Raspi-Config), if you already installed it, head to the terminal and type in “sudo raspi-config” to launch it again. One of the first and most important things we need to attend to is cranking up the overclock setting. We need all the power we can get to make our Minecraft experience enjoyable. In Raspi-Config, select option number 7 “Overclock”. Be prepared for some stern warnings about overclocking, but rest easy knowing that overclocking is directly supported by the Raspberry Pi foundation and has been included in the configuration options since late 2012. Once you’re in the actual selection screen, select “Turbo 1000MhHz”. Again, you’ll be warned that the degree of overclocking you’ve selected carries risks (specifically, potential corruption of the SD card, but no risk of actual hardware damage). Click OK and wait for the device to reset. Next, make sure you’re set to boot to the command prompt, not the desktop. Select number 3 “Enable Boot to Desktop/Scratch”  and make sure “Console Text console” is selected. Back at the Raspi-Config menu, select number 8 “Advanced Options’. There are two critical changes we need to make in here and one option change. First, the critical changes. Select A3 “Memory Split”: Change the amount of memory available to the GPU to 16MB (down from the default 64MB). Our Minecraft server is going to ruin in a GUI-less environment; there’s no reason to allocate any more than the bare minimum to the GPU. After selecting the GPU memory, you’ll be returned to the main menu. Select “Advanced Options” again and then select A4 “SSH”. Within the sub-menu, enable SSH. There is very little reason to keep this Pi connected to a monitor and keyboard, by enabling SSH we can remotely access the machine from anywhere on the network. Finally (and optionally) return again to the “Advanced Options” menu and select A2 “Hostname”. Here you can change your hostname from “raspberrypi” to a more fitting Minecraft name. We opted for the highly creative hostname “minecraft”, but feel free to spice it up a bit with whatever you feel like: creepertown, minecraft4life, or miner-box are all great minecraft server names. That’s it for the Raspbian configuration tab down to the bottom of the main screen and select “Finish” to reboot. After rebooting you can now SSH into your terminal, or continue working from the keyboard hooked up to your Pi (we strongly recommend switching over to SSH as it allows you to easily cut and paste the commands). If you’ve never used SSH before, check out how to use PuTTY with your Pi here. Installing Java on the Pi The Minecraft server runs on Java, so the first thing we need to do on our freshly configured Pi is install it. Log into your Pi via SSH and then, at the command prompt, enter the following command to make a directory for the installation: sudo mkdir /java/ Now we need to download the newest version of Java. At the time of this publication the newest release is the OCT 2013 update and the link/filename we use will reflect that. Please check for a more current version of the Linux ARMv6/7 Java release on the Java download page and update the link/filename accordingly when following our instructions. At the command prompt, enter the following command: sudo wget --no-check-certificate http://www.java.net/download/jdk8/archive/b111/binaries/jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz Once the download has finished successfully, enter the following command: sudo tar zxvf jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz -C /opt/ Fun fact: the /opt/ directory name scheme is a remnant of early Unix design wherein the /opt/ directory was for “optional” software installed after the main operating system; it was the /Program Files/ of the Unix world. After the file has finished extracting, enter: sudo /opt/jdk1.8.0/bin/java -version This command will return the version number of your new Java installation like so: java version "1.8.0-ea" Java(TM) SE Runtime Environment (build 1.8.0-ea-b111) Java HotSpot(TM) Client VM (build 25.0-b53, mixed mode) If you don’t see the above printout (or a variation thereof if you’re using a newer version of Java), try to extract the archive again. If you do see the readout, enter the following command to tidy up after yourself: sudo rm jdk-8-ea-b111-linux-arm-vfp-hflt-09_oct_2013.tar.gz At this point Java is installed and we’re ready to move onto installing our Minecraft server! Installing and Configuring the Minecraft Server Now that we have a foundation for our Minecraft server, it’s time to install the part that matter. We’ll be using SpigotMC a lightweight and stable Minecraft server build that works wonderfully on the Pi. First, grab a copy of the the code with the following command: sudo wget http://ci.md-5.net/job/Spigot/lastSuccessfulBuild/artifact/Spigot-Server/target/spigot.jar This link should remain stable over time, as it points directly to the most current stable release of Spigot, but if you have any issues you can always reference the SpigotMC download page here. After the download finishes successfully, enter the following command: sudo /opt/jdk1.8.0/bin/java -Xms256M -Xmx496M -jar /home/pi/spigot.jar nogui Note: if you’re running the command on a 256MB Pi change the 256 and 496 in the above command to 128 and 256, respectively. Your server will launch and a flurry of on-screen activity will follow. Be prepared to wait around 3-6 minutes or so for the process of setting up the server and generating the map to finish. Future startups will take much less time, around 20-30 seconds. Note: If at any point during the configuration or play process things get really weird (e.g. your new Minecraft server freaks out and starts spawning you in the Nether and killing you instantly), use the “stop” command at the command prompt to gracefully shutdown the server and let you restart and troubleshoot it. After the process has finished, head over to the computer you normally play Minecraft on, fire it up, and click on Multiplayer. You should see your server: If your world doesn’t popup immediately during the network scan, hit the Add button and manually enter the address of your Pi. Once you connect to the server, you’ll see the status change in the server status window: According to the server, we’re in game. According to the actual Minecraft app, we’re also in game but it’s the middle of the night in survival mode: Boo! Spawning in the dead of night, weaponless and without shelter is no way to start things. No worries though, we need to do some more configuration; no time to sit around and get shot at by skeletons. Besides, if you try and play it without some configuration tweaks first, you’ll likely find it quite unstable. We’re just here to confirm the server is up, running, and accepting incoming connections. Once we’ve confirmed the server is running and connectable (albeit not very playable yet), it’s time to shut down the server. Via the server console, enter the command “stop” to shut everything down. When you’re returned to the command prompt, enter the following command: sudo nano server.properties When the configuration file opens up, make the following changes (or just cut and paste our config file minus the first two lines with the name and date stamp): #Minecraft server properties #Thu Oct 17 22:53:51 UTC 2013 generator-settings= #Default is true, toggle to false allow-nether=false level-name=world enable-query=false allow-flight=false server-port=25565 level-type=DEFAULT enable-rcon=false force-gamemode=false level-seed= server-ip= max-build-height=256 spawn-npcs=true white-list=false spawn-animals=true texture-pack= snooper-enabled=true hardcore=false online-mode=true pvp=true difficulty=1 player-idle-timeout=0 gamemode=0 #Default 20; you only need to lower this if you're running #a public server and worried about loads. max-players=20 spawn-monsters=true #Default is 10, 3-5 ideal for Pi view-distance=5 generate-structures=true spawn-protection=16 motd=A Minecraft Server In the server status window, seen through your SSH connection to the pi, enter the following command to give yourself operator status on your Minecraft server (so that you can use more powerful commands in game, without always returning to the server status window). op [your minecraft nickname] At this point things are looking better but we still have a little tweaking to do before the server is really enjoyable. To that end, let’s install some plugins. The first plugin, and the one you should install above all others, is NoSpawnChunks. To install the plugin, first visit the NoSpawnChunks webpage and grab the download link for the most current version. As of this writing the current release is v0.3. Back at the command prompt (the command prompt of your Pi, not the server console–if your server is still active shut it down) enter the following commands: cd /home/pi/plugins sudo wget http://dev.bukkit.org/media/files/586/974/NoSpawnChunks.jar Next, visit the ClearLag plugin page, and grab the latest link (as of this tutorial, it’s v2.6.0). Enter the following at the command prompt: sudo wget http://dev.bukkit.org/media/files/743/213/Clearlag.jar Because the files aren’t compressed in a .ZIP or similar container, that’s all there is to it: the plugins are parked in the plugin directory. (Remember this for future plugin downloads, the file needs to be whateverplugin.jar, so if it’s compressed you need to uncompress it in the plugin directory.) Resart the server: sudo /opt/jdk1.8.0/bin/java -Xms256M -Xmx496M -jar /home/pi/spigot.jar nogui Be prepared for a slightly longer startup time (closer to the 3-6 minutes and much longer than the 30 seconds you just experienced) as the plugins affect the world map and need a minute to massage everything. After the spawn process finishes, type the following at the server console: plugins This lists all the plugins currently active on the server. You should see something like this: If the plugins aren’t loaded, you may need to stop and restart the server. After confirming your plugins are loaded, go ahead and join the game. You should notice significantly snappier play. In addition, you’ll get occasional messages from the plugins indicating they are active, as seen below: At this point Java is installed, the server is installed, and we’ve tweaked our settings for for the Pi.  It’s time to start building with friends!     

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• Calculating the Size (in Bytes and MB) of a Oracle Coherence Cache

  - by Ricardo Ferreira

  The concept and usage of data grids are becoming very popular in this days since this type of technology are evolving very fast with some cool lead products like Oracle Coherence. Once for a while, developers need an programmatic way to calculate the total size of a specific cache that are residing in the data grid. In this post, I will show how to accomplish this using Oracle Coherence API. This example has been tested with 3.6, 3.7 and 3.7.1 versions of Oracle Coherence. To start the development of this example, you need to create a POJO ("Plain Old Java Object") that represents a data structure that will hold user data. This data structure will also create an internal fat so I call that should increase considerably the size of each instance in the heap memory. Create a Java class named "Person" as shown in the listing below. package com.oracle.coherence.domain; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Random; @SuppressWarnings("serial") public class Person implements Serializable { private String firstName; private String lastName; private List<Object> fat; private String email; public Person() { generateFat(); } public Person(String firstName, String lastName, String email) { setFirstName(firstName); setLastName(lastName); setEmail(email); generateFat(); } private void generateFat() { fat = new ArrayList<Object>(); Random random = new Random(); for (int i = 0; i < random.nextInt(18000); i++) { HashMap<Long, Double> internalFat = new HashMap<Long, Double>(); for (int j = 0; j < random.nextInt(10000); j++) { internalFat.put(random.nextLong(), random.nextDouble()); } fat.add(internalFat); } } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } } Now let's create a Java program that will start a data grid into Coherence and will create a cache named "People", that will hold people instances with sequential integer keys. Each person created in this program will trigger the execution of a custom constructor created in the People class that instantiates an internal fat (the random amount of data generated to increase the size of the object) for each person. Create a Java class named "CreatePeopleCacheAndPopulateWithData" as shown in the listing below. package com.oracle.coherence.demo; import com.oracle.coherence.domain.Person; import com.tangosol.net.CacheFactory; import com.tangosol.net.NamedCache; public class CreatePeopleCacheAndPopulateWithData { public static void main(String[] args) { // Asks Coherence for a new cache named "People"... NamedCache people = CacheFactory.getCache("People"); // Creates three people that will be putted into the data grid. Each person // generates an internal fat that should increase its size in terms of bytes... Person pessoa1 = new Person("Ricardo", "Ferreira", "[email protected]"); Person pessoa2 = new Person("Vitor", "Ferreira", "[email protected]"); Person pessoa3 = new Person("Vivian", "Ferreira", "[email protected]"); // Insert three people at the data grid... people.put(1, pessoa1); people.put(2, pessoa2); people.put(3, pessoa3); // Waits for 5 minutes until the user runs the Java program // that calculates the total size of the people cache... try { System.out.println("---> Waiting for 5 minutes for the cache size calculation..."); Thread.sleep(300000); } catch (InterruptedException ie) { ie.printStackTrace(); } } } Finally, let's create a Java program that, using the Coherence API and JMX, will calculate the total size of each cache that the data grid is currently managing. The approach used in this example was retrieve every cache that the data grid are currently managing, but if you are interested on an specific cache, the same approach can be used, you should only filter witch cache will be looked for. Create a Java class named "CalculateTheSizeOfPeopleCache" as shown in the listing below. package com.oracle.coherence.demo; import java.text.DecimalFormat; import java.util.Map; import java.util.Set; import java.util.TreeMap; import javax.management.MBeanServer; import javax.management.MBeanServerFactory; import javax.management.ObjectName; import com.tangosol.net.CacheFactory; public class CalculateTheSizeOfPeopleCache { @SuppressWarnings({ "unchecked", "rawtypes" }) private void run() throws Exception { // Enable JMX support in this Coherence data grid session... System.setProperty("tangosol.coherence.management", "all"); // Create a sample cache just to access the data grid... CacheFactory.getCache(MBeanServerFactory.class.getName()); // Gets the JMX server from Coherence data grid... MBeanServer jmxServer = getJMXServer(); // Creates a internal data structure that would maintain // the statistics from each cache in the data grid... Map cacheList = new TreeMap(); Set jmxObjectList = jmxServer.queryNames(new ObjectName("Coherence:type=Cache,*"), null); for (Object jmxObject : jmxObjectList) { ObjectName jmxObjectName = (ObjectName) jmxObject; String cacheName = jmxObjectName.getKeyProperty("name"); if (cacheName.equals(MBeanServerFactory.class.getName())) { continue; } else { cacheList.put(cacheName, new Statistics(cacheName)); } } // Updates the internal data structure with statistic data // retrieved from caches inside the in-memory data grid... Set<String> cacheNames = cacheList.keySet(); for (String cacheName : cacheNames) { Set resultSet = jmxServer.queryNames( new ObjectName("Coherence:type=Cache,name=" + cacheName + ",*"), null); for (Object resultSetRef : resultSet) { ObjectName objectName = (ObjectName) resultSetRef; if (objectName.getKeyProperty("tier").equals("back")) { int unit = (Integer) jmxServer.getAttribute(objectName, "Units"); int size = (Integer) jmxServer.getAttribute(objectName, "Size"); Statistics statistics = (Statistics) cacheList.get(cacheName); statistics.incrementUnit(unit); statistics.incrementSize(size); cacheList.put(cacheName, statistics); } } } // Finally... print the objects from the internal data // structure that represents the statistics from caches... cacheNames = cacheList.keySet(); for (String cacheName : cacheNames) { Statistics estatisticas = (Statistics) cacheList.get(cacheName); System.out.println(estatisticas); } } public MBeanServer getJMXServer() { MBeanServer jmxServer = null; for (Object jmxServerRef : MBeanServerFactory.findMBeanServer(null)) { jmxServer = (MBeanServer) jmxServerRef; if (jmxServer.getDefaultDomain().equals(DEFAULT_DOMAIN) || DEFAULT_DOMAIN.length() == 0) { break; } jmxServer = null; } if (jmxServer == null) { jmxServer = MBeanServerFactory.createMBeanServer(DEFAULT_DOMAIN); } return jmxServer; } private class Statistics { private long unit; private long size; private String cacheName; public Statistics(String cacheName) { this.cacheName = cacheName; } public void incrementUnit(long unit) { this.unit += unit; } public void incrementSize(long size) { this.size += size; } public long getUnit() { return unit; } public long getSize() { return size; } public double getUnitInMB() { return unit / (1024.0 * 1024.0); } public double getAverageSize() { return size == 0 ? 0 : unit / size; } public String toString() { StringBuffer sb = new StringBuffer(); sb.append("\nCache Statistics of '").append(cacheName).append("':\n"); sb.append(" - Total Entries of Cache -----> " + getSize()).append("\n"); sb.append(" - Used Memory (Bytes) --------> " + getUnit()).append("\n"); sb.append(" - Used Memory (MB) -----------> " + FORMAT.format(getUnitInMB())).append("\n"); sb.append(" - Object Average Size --------> " + FORMAT.format(getAverageSize())).append("\n"); return sb.toString(); } } public static void main(String[] args) throws Exception { new CalculateTheSizeOfPeopleCache().run(); } public static final DecimalFormat FORMAT = new DecimalFormat("###.###"); public static final String DEFAULT_DOMAIN = ""; public static final String DOMAIN_NAME = "Coherence"; } I've commented the overall example so, I don't think that you should get into trouble to understand it. Basically we are dealing with JMX. The first thing to do is enable JMX support for the Coherence client (ie, an JVM that will only retrieve values from the data grid and will not integrate the cluster) application. This can be done very easily using the runtime "tangosol.coherence.management" system property. Consult the Coherence documentation for JMX to understand the possible values that could be applied. The program creates an in memory data structure that holds a custom class created called "Statistics". This class represents the information that we are interested to see, which in this case are the size in bytes and in MB of the caches. An instance of this class is created for each cache that are currently managed by the data grid. Using JMX specific methods, we retrieve the information that are relevant for calculate the total size of the caches. To test this example, you should execute first the CreatePeopleCacheAndPopulateWithData.java program and after the CreatePeopleCacheAndPopulateWithData.java program. The results in the console should be something like this: 2012-06-23 13:29:31.188/4.970 Oracle Coherence 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/tangosol-coherence.xml" 2012-06-23 13:29:31.219/5.001 Oracle Coherence 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/tangosol-coherence-override-dev.xml" 2012-06-23 13:29:31.219/5.001 Oracle Coherence 3.6.0.4 <D5> (thread=Main Thread, member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified 2012-06-23 13:29:31.266/5.048 Oracle Coherence 3.6.0.4 <D5> (thread=Main Thread, member=n/a): Optional configuration override "/custom-mbeans.xml" is not specified Oracle Coherence Version 3.6.0.4 Build 19111 Grid Edition: Development mode Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 2012-06-23 13:29:33.156/6.938 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded Reporter configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/reports/report-group.xml" 2012-06-23 13:29:33.500/7.282 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from "jar:file:/E:/Oracle/Middleware/oepe_11gR1PS4/workspace/calcular-tamanho-cache-coherence/lib/coherence.jar!/coherence-cache-config.xml" 2012-06-23 13:29:35.391/9.173 Oracle Coherence GE 3.6.0.4 <D4> (thread=Main Thread, member=n/a): TCMP bound to /192.168.177.133:8090 using SystemSocketProvider 2012-06-23 13:29:37.062/10.844 Oracle Coherence GE 3.6.0.4 <Info> (thread=Cluster, member=n/a): This Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=2) joined cluster "cluster:0xC4DB" with senior Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=2) 2012-06-23 13:29:37.172/10.954 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service Cluster with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service Management with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <D5> (thread=Cluster, member=n/a): Member 1 joined Service DistributedCache with senior member 1 2012-06-23 13:29:37.188/10.970 Oracle Coherence GE 3.6.0.4 <Info> (thread=Main Thread, member=n/a): Started cluster Name=cluster:0xC4DB Group{Address=224.3.6.0, Port=36000, TTL=4} MasterMemberSet ( ThisMember=Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle) OldestMember=Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith) ActualMemberSet=MemberSet(Size=2, BitSetCount=2 Member(Id=1, Timestamp=2012-06-23 13:29:14.031, Address=192.168.177.133:8088, MachineId=55685, Location=process:1128, Role=CreatePeopleCacheAndPopulateWith) Member(Id=2, Timestamp=2012-06-23 13:29:36.899, Address=192.168.177.133:8090, MachineId=55685, Location=process:244, Role=Oracle) ) RecycleMillis=1200000 RecycleSet=MemberSet(Size=0, BitSetCount=0 ) ) TcpRing{Connections=[1]} IpMonitor{AddressListSize=0} 2012-06-23 13:29:37.891/11.673 Oracle Coherence GE 3.6.0.4 <D5> (thread=Invocation:Management, member=2): Service Management joined the cluster with senior service member 1 2012-06-23 13:29:39.203/12.985 Oracle Coherence GE 3.6.0.4 <D5> (thread=DistributedCache, member=2): Service DistributedCache joined the cluster with senior service member 1 2012-06-23 13:29:39.297/13.079 Oracle Coherence GE 3.6.0.4 <D4> (thread=DistributedCache, member=2): Asking member 1 for 128 primary partitions Cache Statistics of 'People': - Total Entries of Cache -----> 3 - Used Memory (Bytes) --------> 883920 - Used Memory (MB) -----------> 0.843 - Object Average Size --------> 294640 I hope that this post could save you some time when calculate the total size of Coherence cache became a requirement for your high scalable system using data grids. See you!

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• SQLAuthority News – Amazon Gift Card Raffle for Beta Tester Feedback for NuoDB

  - by pinaldave

  As regular readers know I’ve been spending some time working with the NuoDB beta software. They contacted me last week and asked if I would give you a chance to try their new web-based console for their scalable, SQL-compliant database. They have just put out their final beta release, Beta 9.  It contains a preview of a new web-based “NuoConsole” that will replace and extend the functionality of their current desktop version.  I haven’t spent any time with the new console yet but a really quick look tells me it should make it easier to do deeper monitoring than the older one. It also looks like they have added query-level reporting through the console. I will try to play with it soon. NuoDB is doing a last, big push to get some more feedback from developers before they release their 1.0 product sometime in the next several weeks. Since the console is new, they are especially interested in some quick feedback on it before general availability. For SQLAuthority readers only, NuoDB will raffle off three $50 Amazon gift cards in exchange for your feedback on the NuoConsole preview. Here’s how to Enter Download NuoDBeta 9 here You must build a domain before you can start the console. Launch the Web Console. Windows Code: start java -jar jarnuodbwebconsole.jar Mac, Linux, Solaris, Unix Code: java -jar jar/nuodbwebconsole.jar Access the Web Console: Code: http://localhost:8080 When you have tried it out, go to a short (8 question) survey to enter the raffle Click here for the survey You must complete the survey before midnight EDT on October 17, 2012. Here’s what else they are saying about this last beta before general availability: Beta 9 now supports the Zend PHP framework so that PHP developers can directly integrate web applications with NuoDB. Multi-threaded HDFS support – NuoDB Storage Managers can now be configured to persist data to the high performance Hadoop distributed file system (HDFS). Beta 9 optimizes for multi-thread I/O streams at maximum performance. This enhancement allows users to make Hadoop their core storage with no extra effort which is a pretty cool idea. Improved Performance –On a single transaction node, Beta 9 offers performance comparable with MySQL and MariaDB. As additional nodes are added, NuoDB performance improves significantly at near linear scale. Query & Explain Plan Logging – Beta 9 introduces SQL explain plans for your queries. Qualify queries with the word “EXPLAIN” and NuoDB will respond with the details of the execution plan allowing performance optimization to SQL. Through the NuoConsole, you can now kill hung or long running queries. Java App Server Support – Beta 9 now supports leading Web JEE app servers including JBoss, Tomcat, and ColdFusion. They’ve also reported: Improved PHP/PDO drivers Support for Drupal Faster Ruby on Rails driver The Hibernate Dialect supports version 4.1 And good news for my readers: numerous SQL enhancements They will share the results of the web console feedback with me.  I’ll let you know how it goes. Also the winner of their last contest was Jaime Martínez Lafargue!  Do leave a comment here once you complete the survey.  Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: SQL Authority Tagged: NuoDB

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