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  • Overly accessible and incredibly resource hungry relationships between business objects. How can I f

    - by Mike
    Hi, Firstly, This might seem like a long question. I don't think it is... The code is just an overview of what im currently doing. It doesn't feel right, so I am looking for constructive criticism and warnings for pitfalls and suggestions of what I can do. I have a database with business objects. I need to access properties of parent objects. I need to maintain some sort of state through business objects. If you look at the classes, I don't think that the access modifiers are right. I don't think its structured very well. Most of the relationships are modelled with public properties. SubAccount.Account.User.ID <-- all of those are public.. Is there a better way to model a relationship between classes than this so its not so "public"? The other part of this question is about resources: If I was to make a User.GetUserList() function that returns a List, and I had 9000 users, when I call the GetUsers method, it will make 9000 User objects and inside that it will make 9000 new AccountCollection objects. What can I do to make this project not so resource hungry? Please find the code below and rip it to shreds. public class User { public string ID {get;set;} public string FirstName {get; set;} public string LastName {get; set;} public string PhoneNo {get; set;} public AccountCollection accounts {get; set;} public User { accounts = new AccountCollection(this); } public static List<Users> GetUsers() { return Data.GetUsers(); } } public AccountCollection : IEnumerable<Account> { private User user; public AccountCollection(User user) { this.user = user; } public IEnumerable<Account> GetEnumerator() { return Data.GetAccounts(user); } } public class Account { public User User {get; set;} //This is public so that the subaccount can access its Account's User's ID public int ID; public string Name; public Account(User user) { this.user = user; } } public SubAccountCollection : IEnumerable<SubAccount> { public Account account {get; set;} public SubAccountCollection(Account account) { this.account = account; } public IEnumerable<SubAccount> GetEnumerator() { return Data.GetSubAccounts(account); } } public class SubAccount { public Account account {get; set;} //this is public so that my Data class can access the account, to get the account's user's ID. public SubAccount(Account account) { this.account = account; } public Report GenerateReport() { Data.GetReport(this); } } public static class Data { public static List<Account> GetSubAccounts(Account account) { using (var dc = new databaseDataContext()) { List<SubAccount> query = (from a in dc.Accounts where a.UserID == account.User.ID //this is getting the account's user's ID select new SubAccount(account) { ID = a.ID, Name = a.Name, }).ToList(); } } public static List<Account> GetAccounts(User user) { using (var dc = new databaseDataContext()) { List<Account> query = (from a in dc.Accounts where a.UserID == User.ID //this is getting the user's ID select new Account(user) { ID = a.ID, Name = a.Name, }).ToList(); } } public static Report GetReport(SubAccount subAccount) { Report report = new Report(); //database access code here //need to get the user id of the subaccount's account for data querying. //i've got the subaccount, but how should i get the user id. //i would imagine something like this: int accountID = subAccount.Account.User.ID; //but this would require the subaccount's Account property to be public. //i do not want this to be accessible from my other project (UI). //reading up on internal seems to do the trick, but within my code it still feels //public. I could restrict the property to read, and only private set. return report; } public static List<User> GetUsers() { using (var dc = new databaseDataContext()) { var query = (from u in dc.Users select new User { ID = u.ID, FirstName = u.FirstName, LastName = u.LastName, PhoneNo = u.PhoneNo }).ToList(); return query; } } }

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  • Connection to Weblogic Server through ServiceMix fails

    - by bertolami
    I connect from a OSGi bundle deployed on Apache ServiceMix to a Weblogic Server to call some EJBs. The lookup happens with JNDI. In my unit test everything works fine. But when a deploy the bundle on ServiceMix a CommunicationException exception is raised on JNDI ContextFactory initialisation. The class that performs the lookup during initialisation: public DummyJndiLookup(JndiTemplate jndiTemplate) { try { String securityServiceURL = "ejb/xyz/Service"; reference = jndiTemplate.lookup(securityServiceURL); log.info("Successfully connected to JNDI Server: " + reference); } catch (Throwable t) { throw new RuntimeException(t); } } The beans in the spring context: <bean id="dummy" class="xyz.DummyJndiLookup"> <constructor-arg ref="jndiTemplate"></constructor-arg> </bean> <bean id="jndiTemplate" class="org.springframework.jndi.JndiTemplate" lazy-init="true"> <property name="environment"> <props> <prop key="java.naming.factory.initial">weblogic.jndi.WLInitialContextFactory</prop> <prop key="java.naming.provider.url">t3://xyz:22225</prop> <prop key="java.naming.security.principal">weblogic</prop> <prop key="java.naming.security.credentials">weblogic</prop> </props> </property> </bean> The resulting exception stack trace: Caused by: javax.naming.CommunicationException [Root exception is java.net.ConnectException: t3://xyz7:22225: Bootstrap to: xyz/192.168.108.22:22225' over: 't3' got an error or timed out] at weblogic.jndi.internal.ExceptionTranslator.toNamingException(ExceptionTranslator.java:40) at weblogic.jndi.WLInitialContextFactoryDelegate.toNamingException(WLInitialContextFactoryDelegate.java:783) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:365) at weblogic.jndi.Environment.getContext(Environment.java:315) at weblogic.jndi.Environment.getContext(Environment.java:285) at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init>(InitialContext.java:197) at org.springframework.jndi.JndiTemplate.createInitialContext(JndiTemplate.java:137) at org.springframework.jndi.JndiTemplate.getContext(JndiTemplate.java:104) at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:86) at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:153) at xyz.DummyJndiLookup.<init>(DummyJndiLookup.java:36) ... 26 more Caused by: java.net.ConnectException: t3://xyz:22225: Bootstrap to: xyz/192.168.108.22:22225' over: 't3' got an error or timed out at weblogic.rjvm.RJVMFinder.findOrCreateInternal(RJVMFinder.java:216) at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:170) at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:153) at weblogic.jndi.WLInitialContextFactoryDelegate$1.run(WLInitialContextFactoryDelegate.java:344) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:339) ... 38 more Caused by: java.rmi.ConnectException: Bootstrap to: xyz/192.168.108.22:22225' over: 't3' got an error or timed out at weblogic.rjvm.ConnectionManager.bootstrap(ConnectionManager.java:359) at weblogic.rjvm.RJVMManager.findOrCreateRemoteInternal(RJVMManager.java:251) at weblogic.rjvm.RJVMManager.findOrCreate(RJVMManager.java:194) at weblogic.rjvm.RJVMFinder.findOrCreateRemoteServer(RJVMFinder.java:238) at weblogic.rjvm.RJVMFinder.findOrCreateInternal(RJVMFinder.java:200) Any ideas what could cause the exception? Escpecially why it does work in the unit test and not after having bundled and deployed on Apache ServiceMix? Additional Info: I dumped the threads stack trace of ServiceMix (after having removed all JNDI related spring stuff): 2010-03-22 16:18:23 Full thread dump Java HotSpot(TM) Server VM (11.2-b01 mixed mode): "SpringOsgiExtenderThread-14" prio=6 tid=0x054d6400 nid=0x17c4 waiting for monitor entry [0x06f3e000..0x06f3fb14] java.lang.Thread.State: BLOCKED (on object monitor) at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:168) - waiting to lock <0x595876f8> (a weblogic.rjvm.RJVMFinder) at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:153) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:352) at weblogic.jndi.Environment.getContext(Environment.java:315) at weblogic.jndi.Environment.getContext(Environment.java:285) at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init>(InitialContext.java:197) at xyz.DummyJndiLookup.getInitialContext(DummyJndiLookup.java:62) at xyz.DummyJndiLookup.<init>(DummyJndiLookup.java:32) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - locked <0x595959c0> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429) - locked <0x59598370> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:69) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:355) - locked <0x595431a8> (a java.lang.Object) at org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:320) at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor$CompleteRefreshTask.run(DependencyWaiterApplicationContextExecutor.java:136) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "SpringOsgiExtenderThread-12" prio=6 tid=0x05465400 nid=0x14cc in Object.wait() [0x06f8e000..0x06f8fc94] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x595b3800> (a java.lang.Object) at weblogic.rjvm.ConnectionManager.bootstrap(ConnectionManager.java:320) - locked <0x595b3800> (a java.lang.Object) at weblogic.rjvm.RJVMManager.findOrCreateRemoteInternal(RJVMManager.java:251) - locked <0x595885b8> (a java.lang.Object) at weblogic.rjvm.RJVMManager.findOrCreate(RJVMManager.java:194) at weblogic.rjvm.RJVMFinder.findOrCreateRemoteServer(RJVMFinder.java:238) at weblogic.rjvm.RJVMFinder.findOrCreateInternal(RJVMFinder.java:200) at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:170) - locked <0x595876f8> (a weblogic.rjvm.RJVMFinder) at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:153) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:352) at weblogic.jndi.Environment.getContext(Environment.java:315) at weblogic.jndi.Environment.getContext(Environment.java:285) at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init>(InitialContext.java:197) at xyz.DummyJndiLookup.getInitialContext(DummyJndiLookup.java:62) at xyz.DummyJndiLookup.<init>(DummyJndiLookup.java:32) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - locked <0x595b3af0> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429) - locked <0x595b3b18> (a java.util.concurrent.ConcurrentHashMap) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:69) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:355) - locked <0x595b3be0> (a java.lang.Object) at org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:320) at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor$CompleteRefreshTask.run(DependencyWaiterApplicationContextExecutor.java:136) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "RMI TCP Connection(idle)" daemon prio=6 tid=0x05329400 nid=0x1100 waiting on condition [0x069af000..0x069afa14] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x200a1380> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:424) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:323) at java.util.conCurrent.SynchronousQueue.poll(SynchronousQueue.java:874) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:945) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "Timer-4" daemon prio=6 tid=0x053aa400 nid=0xfa4 in Object.wait() [0x06eef000..0x06eefc94] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x59585388> (a java.util.TaskQueue) at java.lang.Object.wait(Object.java:485) at java.util.TimerThread.mainLoop(Timer.java:483) - locked <0x59585388> (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:462) Locked ownable synchronizers: - None "weblogic.timers.TimerThread" daemon prio=10 tid=0x05151800 nid=0x11fc in Object.wait() [0x06e9f000..0x06e9fd14] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x5959c3c0> (a weblogic.timers.internal.TimerThread) at weblogic.timers.internal.TimerThread$Thread.run(TimerThread.java:267) - locked <0x5959c3c0> (a weblogic.timers.internal.TimerThread) Locked ownable synchronizers: - None "ExecuteThread: '4' for queue: 'default'" daemon prio=6 tid=0x04880c00 nid=0x117c in Object.wait() [0x06e4f000..0x06e4fd94] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x595855a8> (a weblogic.kernel.ServerExecuteThread) at java.lang.Object.wait(Object.java:485) at weblogic.kernel.ExecuteThread.waitForRequest(ExecuteThread.java:91) - locked <0x595855a8> (a weblogic.kernel.ServerExecuteThread) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:115) Locked ownable synchronizers: - None "ExecuteThread: '3' for queue: 'default'" daemon prio=6 tid=0x05242400 nid=0xd34 in Object.wait() [0x06dff000..0x06dffa14] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x59585998> (a weblogic.kernel.ServerExecuteThread) at java.lang.Object.wait(Object.java:485) at weblogic.kernel.ExecuteThread.waitForRequest(ExecuteThread.java:91) - locked <0x59585998> (a weblogic.kernel.ServerExecuteThread) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:115) Locked ownable synchronizers: - None "ExecuteThread: '2' for queue: 'default'" daemon prio=6 tid=0x04509800 nid=0x1600 in Object.wait() [0x06daf000..0x06dafa94] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x59585c78> (a weblogic.kernel.ServerExecuteThread) at java.lang.Object.wait(Object.java:485) at weblogic.kernel.ExecuteThread.waitForRequest(ExecuteThread.java:91) - locked <0x59585c78> (a weblogic.kernel.ServerExecuteThread) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:115) Locked ownable synchronizers: - None "ExecuteThread: '1' for queue: 'default'" daemon prio=6 tid=0x05170800 nid=0x894 in Object.wait() [0x06d5f000..0x06d5fb14] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x59585f58> (a weblogic.kernel.ServerExecuteThread) at java.lang.Object.wait(Object.java:485) at weblogic.kernel.ExecuteThread.waitForRequest(ExecuteThread.java:91) - locked <0x59585f58> (a weblogic.kernel.ServerExecuteThread) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:115) Locked ownable synchronizers: - None "ExecuteThread: '0' for queue: 'default'" daemon prio=6 tid=0x05329800 nid=0x10a8 in Object.wait() [0x06c1f000..0x06c1fb94] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x59586238> (a weblogic.kernel.ServerExecuteThread) at java.lang.Object.wait(Object.java:485) at weblogic.kernel.ExecuteThread.waitForRequest(ExecuteThread.java:91) - locked <0x59586238> (a weblogic.kernel.ServerExecuteThread) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:115) Locked ownable synchronizers: - None "Timer-3" daemon prio=6 tid=0x0484bc00 nid=0xebc waiting for monitor entry [0x06cbf000..0x06cbfa94] java.lang.Thread.State: BLOCKED (on object monitor) at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.close(DependencyWaiterApplicationContextExecutor.java:355) - waiting to lock <0x595b3be0> (a java.lang.Object) - locked <0x595b3c48> (a java.lang.Object) at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.doClose(AbstractDelegatedExecutionApplicationContext.java:236) at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:794) - locked <0x595b4128> (a java.lang.Object) at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$3.run(ContextLoaderListener.java:807) at org.springframework.osgi.extender.internal.util.concurrent.RunnableTimedExecution$MonitoredRunnable.run(RunnableTimedExecution.java:60) at org.springframework.scheduling.timer.DelegatingTimerTask.run(DelegatingTimerTask.java:66) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Locked ownable synchronizers: - None "Timer-2" daemon prio=6 tid=0x04780400 nid=0x1388 in Object.wait() [0x06c6f000..0x06c6fb14] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x20783b60> (a java.util.TaskQueue) at java.lang.Object.wait(Object.java:485) at java.util.TimerThread.mainLoop(Timer.java:483) - locked <0x20783b60> (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:462) Locked ownable synchronizers: - None "AWT-Windows" daemon prio=6 tid=0x04028000 nid=0x83c runnable [0x06b8f000..0x06b8fb14] java.lang.Thread.State: RUNNABLE at sun.awt.windows.WToolkit.eventLoop(Native Method) at sun.awt.windows.WToolkit.run(WToolkit.java:291) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "Java2D Disposer" daemon prio=10 tid=0x0469c400 nid=0x1164 in Object.wait() [0x0695f000..0x0695fc14] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x206f4200> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116) - locked <0x206f4200> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132) at sun.java2d.Disposer.run(Disposer.java:125) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "NioSocketAcceptor-1" prio=6 tid=0x055acc00 nid=0xf80 runnable [0x068bf000..0x068bfd94] java.lang.Thread.State: RUNNABLE at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method) at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(WindowsSelectorImpl.java:274) at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(WindowsSelectorImpl.java:256) at sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java:137) at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69) - locked <0x2069e820> (a sun.nio.ch.Util$1) - locked <0x2069e810> (a java.util.Collections$UnmodifiableSet) - locked <0x2069e3d8> (a sun.nio.ch.WindowsSelectorImpl) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:84) at org.apache.mina.transport.socket.nio.NioSocketAcceptor.select(NioSocketAcceptor.java:288) at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run(AbstractPollingIoAcceptor.java:402) at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - <0x2069e0f8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) "RMI RenewClean-[192.168.114.60:1640]" daemon prio=6 tid=0x05312400 nid=0x1058 in Object.wait() [0x06b3f000..0x06b3fa94] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x20669858> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116) - locked <0x20669858> (a java.lang.ref.ReferenceQueue$Lock) at sun.rmi.transport.DGCClient$EndpointEntry$RenewCleanThread.run(DGCClient.java:516) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "RMI Scheduler(0)" daemon prio=6 tid=0x05132800 nid=0x146c waiting on condition [0x06aef000..0x06aefb14] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x200a1508> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1963) at java.util.concurrent.DelayQueue.take(DelayQueue.java:164) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:583) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:576) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "GC Daemon" daemon prio=2 tid=0x05678400 nid=0x166c in Object.wait() [0x06a9f000..0x06a9fc14] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x2060d790> (a sun.misc.GC$LatencyLock) at sun.misc.GC$Daemon.run(GC.java:100) - locked <0x2060d790> (a sun.misc.GC$LatencyLock) Locked ownable synchronizers: - None "RMI Reaper" prio=6 tid=0x04fee800 nid=0x828 in Object.wait() [0x06a4f000..0x06a4fd14] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x200a79c8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116) - locked <0x200a79c8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132) at sun.rmi.transport.ObjectTable$Reaper.run(ObjectTable.java:333) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "RMI TCP Accept-0" daemon prio=6 tid=0x0488dc00 nid=0x129c runnable [0x069ff000..0x069ffc94] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384) - locked <0x20606780> (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:369) at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:341) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "RMI TCP Accept-20220" daemon prio=6 tid=0x05319800 nid=0x1634 runnable [0x0690f000..0x0690fa94] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384) - locked <0x205fb908> (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:369) at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:341) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "gogo shell pipe thread" daemon prio=6 tid=0x0511f400 nid=0x920 runnable [0x0586f000..0x0586fb94] java.lang.Thread.State: RUNNABLE at jline.WindowsTerminal.readByte(Native Method) at jline.WindowsTerminal.readCharacter(WindowsTerminal.java:237) at jline.AnsiWindowsTerminal.readDirectChar(AnsiWindowsTerminal.java:44) at org.apache.felix.karaf.shell.console.jline.Console$Pipe.run(Console.java:346) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "Karaf Shell Console Thread" prio=6 tid=0x05134400 nid=0xf54 waiting on condition [0x0581f000..0x0581fc14] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x20573970> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1925) at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:317) at org.apache.felix.karaf.shell.console.jline.Console$ConsoleInputStream.read(Console.java:286) at org.apache.felix.karaf.shell.console.jline.Console$ConsoleInputStream.read(Console.java:303) at jline.AnsiWindowsTerminal.readCharacter(AnsiWindowsTerminal.java:40) at jline.WindowsTerminal.readVirtualKey(WindowsTerminal.java:359) at jline.ConsoleReader.readVirtualKey(ConsoleReader.java:1504) at jline.ConsoleReader.readBinding(ConsoleReader.java:674) at jline.ConsoleReader.readLine(ConsoleReader.java:514) at jline.ConsoleReader.readLine(ConsoleReader.java:468) at org.apache.felix.karaf.shell.console.jline.Console.run(Console.java:169) at java.lang.Thread.run(Thread.java:619) Locked ownable synchronizers: - None "pool-2-thread-3" prio=6 tid=0x04522c00 nid=0xf7c waiting on condition [0x04f9f000..0x04f9fc94] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x202a6220> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at ja

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  • How to monitor HTTP(S) traffic / URLs in Android?

    - by Pawel Krakowiak
    I'm interested in whether there is a way to monitor HTTP(S) traffic on an Android phone? What I would like to do is to be able to retrieve all URLs that have been accessed on the phone's browser. I thought that there would be a browser intent for that, but have not seen anything - given I'm green, maybe I just did not know where to look? I followed the question and answer here, but it works only for hyperlinks which were clicked by the user, however I need to catch all URLs - including the ones typed in by the user. Basically I need to know about every single URL that was opened in the web browser. Can I register some kind of a handler with the browser? Is something like that feasible at all?

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  • Is ReaderWriterLockSlim.EnterUpgradeableReadLock() essentially the same as Monitor.Enter()?

    - by Neil Barnwell
    So I have a situation where I may have many, many reads and only the occasional write to a resource shared between multiple threads. A long time ago I read about ReaderWriterLock, and have read about ReaderWriterGate which attempts to mitigate the issue where many writes coming in trump reads and hurt performance. However, now I've become aware of ReaderWriterLockSlim... From the docs, I believe that there can only be one thread in "upgradeable mode" at any one time. In a situation where the only access I'm using is EnterUpgradeableReadLock() (which is appropriate for my scenario) then is there much difference to just sticking with lock(){}? Here's the excerpt: A thread that tries to enter upgradeable mode blocks if there is already a thread in upgradeable mode, if there are threads waiting to enter write mode, or if there is a single thread in write mode. Or, does the recursion policy make any difference to this?

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  • Most useful AutoHotkey scripts?

    - by Jon Erickson
    What AutoHotkey scripts have you found that proved to be extremely useful? I'll share one that I am using for multiple monitors. Windows + Right: Move window from the left monitor to the right monitor #right:: WinGet, mm, MinMax, A WinRestore, A WinGetPos, X, Y,,,A WinMove, A,, X+A_ScreenWidth, Y if(mm = 1){ WinMaximize, A } return Windows + Left: Move window from the right monitor to the left monitor #left:: WinGet, mm, MinMax, A WinRestore, A WinGetPos, X, Y,,,A WinMove, A,, X-A_ScreenWidth, Y if(mm = 1){ WinMaximize, A } return

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  • Ubuntu Lucid: Erratic screen behaviour after boot

    - by fgysin
    In short: about 50% of the time I have a screwed up monitor setup after reboot. About 50% it is totally correct. Now the longer version: I updated my machine from 9.04 to 10.04 (via 9.10). At first I run into some monitor problems (I have a 3-monitor setup) because of the known bug in the new xserver driver for xinerama. This messes up behaviour if the mouse goes either left or above the screen number 0, i.e. I had to make my left-most monitor screen 0. Everything worked out fine finally, I got my 3-monitor setup back with xinerama enabled to get one big desktop streched over 3 screens. Now the fun part: Every time I start up my machine only one of the 3 monitors gets a signal and is woken up: it only recognizes the left-most monitor (screen 0) and crams all the desktop stuff into this one screen. If I go into nvidia settings I only see one physical device although all 3 are connected and have power. When I look into the xorg.conf I can still see my old setup with 3 devices, 3 screens, xinerama active etc... But I was totally unable to get 3 montitors to work. (I tried unplugging monitors, reconfiguring whole nvidia setup, ...) But it gets even better: When I restart my machine (i.e. choose the restart option from the Ubuntu menu) it shuts down and tries to restart. The restart then gets stuck after showing the Ubuntu splash screen with the 'loading bar' (the moving dots thingy) and I am forced to kill the machine by cutting power. But after the power cut the machine boots up normally and suddenly I get my 3 monitor setup back up working. That is until the next time I shut down and start up, where it all starts over again and I only have one monitor... (see above) I really have a hard time seeing where the error is. It must be that the restart boot somehow differs from the 'normal' boot. But the fact that it gets stuck and I need to cut power which then basically triggers a 'normal' boot does not really support this theory... My setup (please tell me if you need further info): 3 monitors as 3 screens as one desktop (with xinerama) 2 nvidia cards where screen 0 and 1 are on card 0 and screen 2 is on card 1 Ubuntu 10.04 Lucid Lynx (updated from 9.10, 9.04, ....) I would appreciate every idea on the subject, at the moment I really don't have any clue what to do...

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  • Ubuntu Lucid: Erratic screen behaviour after boot

    - by fgysin
    In short: about 50% of the time I have a screwed up monitor setup after reboot. About 50% it is totally correct. Now the longer version: I updated my machine from 9.04 to 10.04 (via 9.10). At first I run into some monitor problems (I have a 3-monitor setup) because of the known bug in the new xserver driver for xinerama. This messes up behaviour if the mouse goes either left or above the screen number 0, i.e. I had to make my left-most monitor screen 0. Everything worked out fine finally, I got my 3-monitor setup back with xinerama enabled to get one big desktop streched over 3 screens. Now the fun part: Every time I start up my machine only one of the 3 monitors gets a signal and is woken up: it only recognizes the left-most monitor (screen 0) and crams all the desktop stuff into this one screen. If I go into nvidia settings I only see one physical device although all 3 are connected and have power. When I look into the xorg.conf I can still see my old setup with 3 devices, 3 screens, xinerama active etc... But I was totally unable to get 3 montitors to work. (I tried unplugging monitors, reconfiguring whole nvidia setup, ...) But it gets even better: When I restart my machine (i.e. choose the restart option from the Ubuntu menu) it shuts down and tries to restart. The restart then gets stuck after showing the Ubuntu splash screen with the 'loading bar' (the moving dots thingy) and I am forced to kill the machine by cutting power. But after the power cut the machine boots up normally and suddenly I get my 3 monitor setup back up working. That is until the next time I shut down and start up, where it all starts over again and I only have one monitor... (see above) I really have a hard time seeing where the error is. It must be that the restart boot somehow differs from the 'normal' boot. But the fact that it gets stuck and I need to cut power which then basically triggers a 'normal' boot does not really support this theory... My setup (please tell me if you need further info): 3 monitors as 3 screens as one desktop (with xinerama) 2 nvidia cards where screen 0 and 1 are on card 0 and screen 2 is on card 1 Ubuntu 10.04 Lucid Lynx (updated from 9.10, 9.04, ....) I would appreciate every idea on the subject, at the moment I really don't have any clue what to do...

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  • Corosync :: Restarting some resources after Lan connectivity issue

    - by moebius_eye
    I am currently looking into corosync to build a two-node cluster. So, I've got it working fine, and it does what I want to do, which is: Lost connectivity between the two nodes gives the first node '10node' both Failover Wan IPs. (aka resources WanCluster100 and WanCluster101 ) '11node' does nothing. He "thinks" he still has his Failover Wan IP. (aka WanCluster101) But it doesn't do this: '11node' should restart the WanCluster101 resource when the connectivity with the other node is back. This is to prevent a condition where node10 simply dies (and thus does not get 11node's Failover Wan IP), resulting in a situation where none of the nodes have 10node's failover IP because 10node is down 11node has "given back" his failover Wan IP. Here's the current configuration I'm working on. node 10sch \ attributes standby="off" node 11sch \ attributes standby="off" primitive LanCluster100 ocf:heartbeat:IPaddr2 \ params ip="172.25.0.100" cidr_netmask="32" nic="eth3" \ op monitor interval="10s" \ meta is-managed="true" target-role="Started" primitive LanCluster101 ocf:heartbeat:IPaddr2 \ params ip="172.25.0.101" cidr_netmask="32" nic="eth3" \ op monitor interval="10s" \ meta is-managed="true" target-role="Started" primitive Ping100 ocf:pacemaker:ping \ params host_list="192.0.2.1" multiplier="500" dampen="15s" \ op monitor interval="5s" \ meta target-role="Started" primitive Ping101 ocf:pacemaker:ping \ params host_list="192.0.2.1" multiplier="500" dampen="15s" \ op monitor interval="5s" \ meta target-role="Started" primitive WanCluster100 ocf:heartbeat:IPaddr2 \ params ip="192.0.2.100" cidr_netmask="32" nic="eth2" \ op monitor interval="10s" \ meta target-role="Started" primitive WanCluster101 ocf:heartbeat:IPaddr2 \ params ip="192.0.2.101" cidr_netmask="32" nic="eth2" \ op monitor interval="10s" \ meta target-role="Started" primitive Website0 ocf:heartbeat:apache \ params configfile="/etc/apache2/apache2.conf" options="-DSSL" \ operations $id="Website-one" \ op start interval="0" timeout="40" \ op stop interval="0" timeout="60" \ op monitor interval="10" timeout="120" start-delay="0" statusurl="http://127.0.0.1/server-status/" \ meta target-role="Started" primitive Website1 ocf:heartbeat:apache \ params configfile="/etc/apache2/apache2.conf.1" options="-DSSL" \ operations $id="Website-two" \ op start interval="0" timeout="40" \ op stop interval="0" timeout="60" \ op monitor interval="10" timeout="120" start-delay="0" statusurl="http://127.0.0.1/server-status/" \ meta target-role="Started" group All100 WanCluster100 LanCluster100 group All101 WanCluster101 LanCluster101 location AlwaysPing100WithNode10 Ping100 \ rule $id="AlWaysPing100WithNode10-rule" inf: #uname eq 10sch location AlwaysPing101WithNode11 Ping101 \ rule $id="AlWaysPing101WithNode11-rule" inf: #uname eq 11sch location NeverLan100WithNode11 LanCluster100 \ rule $id="RAND1083308" -inf: #uname eq 11sch location NeverPing100WithNode11 Ping100 \ rule $id="NeverPing100WithNode11-rule" -inf: #uname eq 11sch location NeverPing101WithNode10 Ping101 \ rule $id="NeverPing101WithNode10-rule" -inf: #uname eq 10sch location Website0NeedsConnectivity Website0 \ rule $id="Website0NeedsConnectivity-rule" -inf: not_defined pingd or pingd lte 0 location Website1NeedsConnectivity Website1 \ rule $id="Website1NeedsConnectivity-rule" -inf: not_defined pingd or pingd lte 0 colocation Never -inf: LanCluster101 LanCluster100 colocation Never2 -inf: WanCluster100 LanCluster101 colocation NeverBothWebsitesTogether -inf: Website0 Website1 property $id="cib-bootstrap-options" \ dc-version="1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff" \ cluster-infrastructure="openais" \ expected-quorum-votes="2" \ no-quorum-policy="ignore" \ stonith-enabled="false" \ last-lrm-refresh="1408954702" \ maintenance-mode="false" rsc_defaults $id="rsc-options" \ resource-stickiness="100" \ migration-threshold="3" I also have a less important question concerning this line: colocation NeverBothLans -inf: LanCluster101 LanCluster100 How do I tell it that this collocation only applies to '11node'.

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  • Dual Monitors in Ubuntu

    - by Luminose
    My only issue that is stopping me from moving to Linux is the dual monitor support. If I use TwinView, maximizing an application causes it to take over both monitors, not maximize in the current monitor the way it works in Windows. If I use two separate X windows, certain programs default to a specific monitor with no way of moving it to the other desktop. Has anyone else had these issues? Are there any detailed dual monitor resources.for Linux/Ubuntu I can read?

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  • How to goup EC2 instances in order to delegate administrations to differents teams?

    - by Olivier
    Is it possible (using ARN) to make severals groups of instances. Then using differents policy to grant some access to a group of instance only and not the other instances? For example : { "Statement": [ { "Action": "ec2:*", "Effect": "Allow", "Resource": "*" }, { "Effect": "Allow", "Action": "elasticloadbalancing:*", "Resource": "*" }, { "Effect": "Allow", "Action": "cloudwatch:*", "Resource": "*" }, { "Effect": "Allow", "Action": "autoscaling:*", "Resource": "*" } ] } Instead of "*" could we use a group or something like that? like a specific subnet? a Tag? or whatever... Thanks for your help

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  • Dual Monitors Switching While Running Full-Screen Game?

    - by Phil Sandler
    I have a dual-monitor setup, and currently I can run a full screen game (Warcraft 3 and Starcraft 2 currently) and see still see anything I have open on my second monitor. I can't move my mouse from one monitor to the other, which is a good thing. However, I would like to know if it's possible to press some key combination and "release" my mouse control from the full screen game to my second monitor without the game minimizing (which is what happens when I ALT - Tab).

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  • False Duplicate Key Error in Entity Framework Application

    - by ProfK
    I have an ASP.NET application using an entity framework model. In an import routine, with the code below, I get a "Cannot insert duplicate key" exception for AccountNum on the SaveChanges call, but when execution stops for the exception, I can query the database for the apparently duplicated field, and no prior record exists. using (var ents = new PvmmsEntities()) { foreach (DataRow row in importedResources.Rows) { var empCode = row["EmployeeCode"].ToString(); try { var resource = ents.ActivationResources.FirstOrDefault(rs => rs.EmployeeCode == empCode); if (resource == null) { resource = new ActivationResources(); resource.EmployeeCode = empCode; ents.AddToActivationResources(resource); } resource.AccountNum = row["AccountNum"].ToString(); ents.SaveChanges(true); } catch(Exception ex) { } } }

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  • Zend_Navigation failing to load

    - by Grant Collins
    Hi, Following on from my earlier question, I am still having issues with loading the xml file into Zend_Navigation. I am now getting the following error message: <b>Fatal error</b>: Uncaught exception 'Zend_Navigation_Exception' with message 'Invalid argument: Unable to determine class to instantiate' in C:\www\mysite\development\website\library\Zend\Navigation\Page.php:223 I've tried to make my navigation.xml file look similar to the example on the Zend Documentation, However I just can't seem to get it to work. My XML file looks like this: <?xml version="1.0" encoding="UTF-8"?> <configdata> <navigation> <default> <label>Home</label> <controller>index</controller> <action>index</action> <module>default</module> <pages> <tour> <label>Tour</label> <controller>tour</controller> <action>index</action> <module>default</module> </tour> <blog> <label></label> <uri>http://blog.mysite.com</uri> </blog> <support> <label>Support</label> <controller>support</controller> <action>index</action> <module>default</module> </support> </pages> </default> <users> <label>Home</label> <controller>index</controller> <action>index</action> <module>users</module> <role>guser</role> <resource>owner</resource> <pages> <jobmanger> <label>Job Manager</label> <controller>jobmanager</controller> <action>index</action> <module>users</module> <role>guser</role> <resource>owner</resource> </jobmanger> <myaccount> <label>My Account</label> <controller>profile</controller> <action>index</action> <role>guser</role> <resource>owner</resource> <module>users</module> <pages> <detail> <label>Account Details</label> <controller>profile</controller> <action>detail</action> <module>users</module> <role>guser</role> <resource>owner</resource> <pages> <history> <label>Account History</label> <controller>profile</controller> <action>history</action> <module>users</module> <role>guser</role> <resource>owner</resource> </history> <password> <label>Change Password</label> <controller>profile</controller> <action>changepwd</action> <module>users</module> <role>employer</role> <resource>employers</resource> </password> </pages> </detail> ... </navigation> </configdata> Now I confess that I've totally got the wrong end of the stick with this, but rapidly running out of ideas, and it's been a long week. Thanks, Grant

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  • Dependency Injection and Unit of Work pattern

    - by sunwukung
    I have a dilemma. I've used DI (read: factory) to provide core components for a homebrew ORM. The container provides database connections, DAO's,Mappers and their resultant Domain Objects on request. Here's a basic outline of the Mappers and Domain Object classes class Mapper{ public function __constructor($DAO){ $this->DAO = $DAO; } public function load($id){ if(isset(Monitor::members[$id]){ return Monitor::members[$id]; $values = $this->DAO->selectStmt($id); //field mapping process omitted for brevity $Object = new Object($values); return $Object; } } class User(){ public function setName($string){ $this->name = $string; //mark modified by means fair or foul } } The ORM also contains a class (Monitor) based on the Unit of Work pattern i.e. class Monitor(){ private static array modified; private static array dirty; public function markClean($class); public function markModified($class); } The ORM class itself simply co-ordinates resources extracted from the DI container. So, to instantiate a new User object: $Container = new DI_Container; $ORM = new ORM($Container); $User = $ORM->load('user',1); //at this point the container instantiates a mapper class //and passes a database connection to it via the constructor //the mapper then takes the second argument and loads the user with that id $User->setName('Rumpelstiltskin');//at this point, User must mark itself as "modified" My question is this. At the point when a user sets values on a Domain Object class, I need to mark the class as "dirty" in the Monitor class. I have one of three options as I can see it 1: Pass an instance of the Monitor class to the Domain Object. I noticed this gets marked as recursive in FirePHP - i.e. $this-Monitor-markModified($this) 2: Instantiate the Monitor directly in the Domain Object - does this break DI? 3: Make the Monitor methods static, and call them from inside the Domain Object - this breaks DI too doesn't it? What would be your recommended course of action (other than use an existing ORM, I'm doing this for fun...)

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  • g++ linker error--typeinfo, but not vtable

    - by James
    I know the standard answer for a linker error about missing typeinfo usually also involves vtable and some virtual function that I forgot to actually define. I'm fairly certain that's not the situation this time. Here's the error: UI.o: In function boost::shared_ptr<Graphics::Widgets::WidgetSet>::shared_ptr<Graphics::Resource::GroupByState>(boost::shared_ptr<Graphics::Resource::GroupByState> const&, boost::detail::dynamic_cast_tag)': UI.cpp:(.text._ZN5boost10shared_ptrIN8Graphics7Widgets9WidgetSetEEC1INS1_8Resource12GroupByStateEEERKNS0_IT_EENS_6detail16dynamic_cast_tagE[boost::shared_ptr<Graphics::Widgets::WidgetSet>::shared_ptr<Graphics::Resource::GroupByState>(boost::shared_ptr<Graphics::Resource::GroupByState> const&, boost::detail::dynamic_cast_tag)]+0x30): undefined reference totypeinfo for Graphics::Widgets::WidgetSet' Running c++filt on the obnoxious mangled name shows that it actually is looking at .boost::shared_ptr::shared_ptr(boost::shared_ptr const&, boost::detail::dynamic_cast_tag) The inheritance hierarchy looks something like class AbstractGroup { typedef boost::shared_ptr<AbstractGroup> Ptr; ... }; class WidgetSet : public AbstractGroup { typedef boost::shared_ptr<WidgetSet> Ptr; ... }; class GroupByState : public AbstractGroup { ... }; Then there's this: class UI : public GroupByState { ... void LoadWidgets( GroupByState::Ptr resource ); }; Then the original implementation: void UI::LoadWidgets( GroupByState::Ptr resource ) { WidgetSet::Ptr tmp( boost::dynamic_pointer_cast< WidgetSet >(resource) ); if( tmp ) { ... } } Stupid error on my part (trying to cast to a sibling class with a shared parent), even if the error is kind of cryptic. Changing to this: void UI::LoadWidgets( AbstractGroup::Ptr resource ) { WidgetSet::Ptr tmp( boost::dynamic_pointer_cast< WidgetSet >(resource) ); if( tmp ) { ... } } (which I'm fairly sure is what I actually meant to be doing) left me with a very similar error: UI.o: In function boost::shared_ptr<Graphics::Widgets::WidgetSet>::shared_ptr<Graphics::_Drawer::Group>(boost::shared_ptr<Graphics::_Drawer::Group> const&, boost::detail::dynamic_cast_tag)': UI.cpp:(.text._ZN5boost10shared_ptrIN8Graphics7Widgets9WidgetSetEEC1INS1_7_Drawer5GroupEEERKNS0_IT_EENS_6detail16dynamic_cast_tagE[boost::shared_ptr<Graphics::Widgets::WidgetSet>::shared_ptr<Graphics::_Drawer::Group>(boost::shared_ptr<Graphics::_Drawer::Group> const&, boost::detail::dynamic_cast_tag)]+0x30): undefined reference totypeinfo for Graphics::Widgets::WidgetSet' collect2: ld returned 1 exit status dynamic_cast_tag is just an empty struct in boost/shared_ptr.hpp. It's just a guess that boost might have anything at all to do with the error. Passing in a WidgetSet::Ptr totally eliminates the need for a cast, and it builds fine (which is why I think there's more going on than the standard answer for this question). Obviously, I'm trimming away a lot of details that might be important. My next step is to cut it down to the smallest example that fails to build, but I figured I'd try the lazy way out and take a stab on here first. TIA!

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  • how to monitor the program code execution? (file creation and modification by code lines etc)

    - by infant programmer
    My program is about triggering XSL transformation, Its fact that this code for carrying out the transformation, creates some dll and tmp files and deletes them pretty soon after the transformation is completed. It is almost untraceable for me to monitor the creation and deletion of files manually, so I want to include some chunk of codelines to display "which codeline has created/modified which tmp and dll files" in console window. This is the relevant part of the code: string strXmlQueryTransformPath = @"input.xsl"; string strXmlOutput = string.Empty; StringReader srXmlInput = null; StringWriter swXmlOutput = null; XslCompiledTransform xslTransform = null; XPathDocument xpathXmlOrig = null; XsltSettings xslSettings = null; MemoryStream objMemoryStream = null; objMemoryStream = new MemoryStream(); xslTransform = new XslCompiledTransform(false); xpathXmlOrig = new XPathDocument("input.xml"); xslSettings = new XsltSettings(); xslSettings.EnableScript = true; xslTransform.Load(strXmlQueryTransformPath, xslSettings, new XmlUrlResolver()); xslTransform.Transform(xpathXmlOrig, null, objMemoryStream); objMemoryStream.Position = 0; StreamReader objStreamReader = new StreamReader(objMemoryStream); strXmlOutput = objStreamReader.ReadToEnd(); // make use of Data in string "strXmlOutput" google and msdn search couldn't help me much..

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  • Zabbix Server with Multiple NIC (one on different VLAN) - Monitor a host from both NIC?

    - by Joshua Enfield
    Basically we have many of servers configured for internal use only. I want to ensure the internal services are preserved as internal by checking a host using the local subnet (allowed - this checks if services are up and working), and that the internal services are indeed internal (make sure the services are "down" when checking from different subnet (vlan)) Is there an easy way to do this in Zabbix?

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  • Dual monitor webbrowsing with Firefox - Addon that opens links on the other window?

    - by raegadfsgfsdg
    I often browse news aggressors like Reddit.com and I want to be able to have one Firefox window open on each of my two screens, and when I middle click on a link on my left screen, it will open up the tab on my right firefox window. I know that there are some plugins that can open up new windows, but if I do that I'll have to many windows open and I'd rather manage my open news stories via tab bars rather than with windows (clearer, more efficient to browse, and easier to bookmark). Is there a Firefox addon with which I can middle click on a link and it will open it in a new tab in my other window?

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  • Why does this monitor go to sleep but won't wake up, event though all related power options are turned off?

    - by VoidKing
    We have a machine, Windows 7 (64-bit) with ASUS motherboard, in our building that only sometimes seems to go to sleep, but won't wake up. The machine is still running but shaking the mouse or hitting keys on the keyboard won't wake it up. I have tried for days to isolate the problem, but every time we get to a "let's try this" scenario, it happens again, later. All power options related to display being off are set to never, except the simple, "turn display off after..." setting. That is, the hard drive is set to never turn off, and the computer is set to never sleep nor hibernate. All drivers seem to be up to date, but I am afraid I will hose the machine if I do a BIOS update (plus I figured that will probably have nothing to do with the issue and only make something else break). Wasn't sure if there was something obvious I was missing?

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  • Change Windows 7 start menu height depending on monitor size?

    - by hippietrail
    I know I can change the height of the Windows 7 Start Menu so that includes more or fewer recently used apps, etc. But I have a netbook with a tiny screen that I plug into a decent sized LCD most of the time at home. Is there a way to get Win7 to use a taller Start menu with more items when I'm using the LCD and a shorter Start menu with fewer items when using the netbook's built in screen? (I'm a programmer so capable of technical solutions if there's no ready-made solution.)

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  • How to monitor changes in the frequency of network latency spikes over time?

    - by dequis
    I'm currently trying to troubleshoot an issue with my network in which I get latency spikes up to 200 seconds (normally around 50 secs) in an apparently random way at apparently random moments of the day. While trying to find what part of my messy network needs to be blamed (outside of the scope of this question - discussed a bit on chat), I realized I have no reliable way to confirm that a change actually improved anything. So far, the main way in which i notice this is that irssi shows [Lag: 15 (??)] in the statusbar, increasing every 5 seconds, and all other connections seem to be affected too. Since this depends on my observations, it's not a very reliable method to know how often it really happens. Note that just sending ICMP pings is probably not enough, but that's just my guess. It might be a "bufferbloat" issue, it might be packet loss, it might only apply to persistent connections. I suspect this because a few months ago, when the issue started, I had a "ping" command running in background and it didn't show anything weird at all during the latency spikes. This seems to have changed now (pings don't go through), but still, I'd prefer something more robust.

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  • Monitor the shell activity of a user on your Unix system?

    - by Joseph Turian
    Trust, but verify. Let's say I want to hire someone a sysadmin, and give them root access to my Unix system. I want to disable X windows for them, only allow shell usage (through SSH, maybe), so that all operations they perform will be through the shell (not mouse operations). I need a tool that will log to a remote server all commands they issue, as they issue them. So even if they install a back door and cover their tracks, that will be logged remotely. How do I disable everything but shell access? Is there a tool for instantaneously remotely logging commands as they are issued?

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  • How should I monitor memory usage/performance in SunOS/Solaris?

    - by exhuma
    Last week we decided to add some SunOS (uname -a = SunOS bbs-sam-belair 5.10 Generic_127128-11 i86pc i386 i86pc) machines into our running munin instance. First off, the machines are pre-configured appliances, so, I want to avoid touching the system too much without supervision of the service provider. But adding it to munin was fairly easy by writing a small socket-service (if anyone is interested, I put it up on github: https://github.com/munin-monitoring/contrib/tree/master/tools/pypmmn) Yesterday, I implemented/adapted the required plugins for our machines. And here the questions start: First, I have not found a way to determine detailed memory usage values. I get the total memory by running prtconf | grep Memory, and the free memory using vmstat. Fiddling together a munin-plugin, gives me the following graph: This is pretty much uninformative. Compare this to the default plugin for linux nodes which has a lot more detail: Most importantly, this shows me how much memory is actually used by applications. So, first question: Is it possible to get detailed memory information on SunOS with the default system tools (i.e. not using top)? Onto the next puzzle: Seeing the graphs, I noticed activity in the "Paging in/out" graphs, even though the memory graph still has unused memory: Upon further investigation, I found out that df reports that /tmp is mounted on swap. Drilling around on the web, I understood that df will display swap, but in fact, it's mounted as a tmpfs. Now I don't know if this explains the swap activity. The default munin-plugin for solaris uses kstat -p -c misc -m cpu_stat to get these values. I find it already strange that this is using the cpu_stat module. So maybe I simply misinterpret the "paging" graphs? Second question: Do the paging graphs indicate that parts of the memory are paged to disk? Or is the activity caused by file operations in /tmp?

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