hi, The issue was resolved by changing the execution order of the statements.
Ex: first execute db queries and then context.startTenantFlow(); ...................... .................... but i still have a doubt, what is the actual cause for this. Thanks. Ishara Cooray Senior Software Engineer Mobile : +9477 262 9512 WSO2, Inc. | http://wso2.com/ Lean . Enterprise . Middleware On Fri, Aug 29, 2014 at 1:42 PM, Ishara Cooray <[email protected]> wrote: > Hi Dunith, > Thanks for the reply. > > jdbc url , UN and PW are configured in a xml. > > This works for many queries but exception is thrown in few cases only. > > Regards, > > Ishara Cooray > Senior Software Engineer > Mobile : +9477 262 9512 > WSO2, Inc. | http://wso2.com/ > Lean . Enterprise . Middleware > > > On Fri, Aug 29, 2014 at 11:31 AM, Dunith Dhanushka <[email protected]> > wrote: > >> Hi Ishara, >> >> When creating a Database object, you have to pass the JDBC URL and the >> database credentials as follows. >> >> var db = new Database("jdbc:h2:tmp/demo", "admin", "admin"); >> >> Please follow the Jaggery documentation on Databases at [1] >> >> [1] http://jaggeryjs.org/documentation.jag?api=rdb >> >> Regards, >> Dunith >> >> >> On Fri, Aug 29, 2014 at 10:52 AM, Ishara Cooray <[email protected]> wrote: >> >>> my function is as follow and NPE is thrown @ db = new Database("db") >>> >>> var executeQuery = function(queryString) { >>> var results ; >>> var db = null; >>> try{ >>> >>> db = new Database("db");// error here >>> >>> results = db.query(queryString); >>> } catch (e) { >>> log.error(e); >>> throw "Error while accessing >>> database " + " : " + e.message; >>> }finally{ >>> if(db!=null){ >>> db.close(); >>> log.info("db closed"); >>> } >>> } >>> return results; >>> } >>> >>> Ishara Cooray >>> Senior Software Engineer >>> Mobile : +9477 262 9512 >>> WSO2, Inc. | http://wso2.com/ >>> Lean . Enterprise . Middleware >>> >>> >>> On Thu, Aug 28, 2014 at 6:48 PM, Ishara Cooray <[email protected]> wrote: >>> >>>> I have a function which does >>>> 1. create Database connection >>>> 2. execute query >>>> 3. close the db connection >>>> >>>> >>>> var executeQuery = function(queryString) { >>>> var results ; >>>> var db = null; >>>> try{ >>>> var db = new Database("db"); >>>> results = db.query(queryString); >>>> } catch (e) { >>>> log.error(e); >>>> throw "Error while accessing >>>> database " + " : " + e.message; >>>> }finally{ >>>> if(db!=null){ >>>> db.close(); >>>> log.info("db closed"); >>>> } >>>> } >>>> return results; >>>> } >>>> >>>> i use this function when a sql is needed to be executed. >>>> But in some cases, when try to create new Database connection it gives >>>> below NullPointer Exception >>>> >>>> [2014-08-28 18:19:46,849] ERROR >>>> {JAGGERY.modules.database.dataaccess:jag} - >>>> org.mozilla.javascript.WrappedException: Wrapped >>>> java.lang.NullPointerException >>>> (/cloudmgt/modules/database/dataaccess.jag#21) >>>> at >>>> org.mozilla.javascript.Context.throwAsScriptRuntimeEx(Context.java:1754) >>>> at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:148) >>>> at >>>> org.mozilla.javascript.FunctionObject.call(FunctionObject.java:392) >>>> at >>>> org.mozilla.javascript.BaseFunction.construct(BaseFunction.java:343) >>>> at >>>> org.mozilla.javascript.ScriptRuntime.newObject(ScriptRuntime.java:2349) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.database.c0._c_anonymous_1(/cloudmgt/modules/database/dataaccess.jag:21) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.database.c0.call(/cloudmgt/modules/database/dataaccess.jag) >>>> at >>>> org.mozilla.javascript.ScriptRuntime.applyOrCall(ScriptRuntime.java:2430) >>>> at >>>> org.mozilla.javascript.BaseFunction.execIdCall(BaseFunction.java:269) >>>> at >>>> org.mozilla.javascript.IdFunctionObject.call(IdFunctionObject.java:97) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.call2(OptRuntime.java:42) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.database.c2._c_anonymous_2(/cloudmgt/modules/database/module.jag:8) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.database.c2.call(/cloudmgt/modules/database/module.jag) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.call2(OptRuntime.java:42) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0._c_getTenantDisplayName_3(/cloudmgt/modules/tenant/users/add/add.jag:63) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0.call(/cloudmgt/modules/tenant/users/add/add.jag) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:63) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0._c_anonymous_6(/cloudmgt/modules/tenant/users/add/add.jag:132) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0.call(/cloudmgt/modules/tenant/users/add/add.jag) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:63) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0._c_sendUserInvite_8(/cloudmgt/modules/tenant/users/add/add.jag:213) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.users.add.c0.call(/cloudmgt/modules/tenant/users/add/add.jag) >>>> at >>>> org.mozilla.javascript.ScriptRuntime.applyOrCall(ScriptRuntime.java:2430) >>>> at >>>> org.mozilla.javascript.BaseFunction.execIdCall(BaseFunction.java:269) >>>> at >>>> org.mozilla.javascript.IdFunctionObject.call(IdFunctionObject.java:97) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.call2(OptRuntime.java:42) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.c0._c_anonymous_8(/cloudmgt/modules/tenant/module.jag:26) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.modules.tenant.c0.call(/cloudmgt/modules/tenant/module.jag) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.call2(OptRuntime.java:42) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0._c_anonymous_1(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag:82) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0.call(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag) >>>> at >>>> org.mozilla.javascript.optimizer.OptRuntime.call0(OptRuntime.java:23) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0._c_script_0(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag:6) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0.call(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag) >>>> at >>>> org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:394) >>>> at >>>> org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3091) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0.call(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag) >>>> at >>>> org.jaggeryjs.rhino.cloudmgt.site.blocks.tenant.users.add.ajax.c0.exec(/cloudmgt/site/blocks/tenant/users/add/ajax/add.jag) >>>> at >>>> org.jaggeryjs.scriptengine.engine.RhinoEngine.execScript(RhinoEngine.java:570) >>>> at >>>> org.jaggeryjs.scriptengine.engine.RhinoEngine.exec(RhinoEngine.java:273) >>>> at >>>> org.jaggeryjs.jaggery.core.manager.WebAppManager.execute(WebAppManager.java:432) >>>> at >>>> org.jaggeryjs.jaggery.core.JaggeryServlet.doPost(JaggeryServlet.java:29) >>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:755) >>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) >>>> at >>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) >>>> at >>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) >>>> at >>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) >>>> at >>>> org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) >>>> at >>>> org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379) >>>> at >>>> org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) >>>> at >>>> org.jaggeryjs.jaggery.core.JaggeryFilter.doFilter(JaggeryFilter.java:21) >>>> at >>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) >>>> at >>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) >>>> at >>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) >>>> at >>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) >>>> at >>>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) >>>> at >>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) >>>> at >>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47) >>>> at >>>> org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:56) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156) >>>> at >>>> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936) >>>> at >>>> org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52) >>>> at >>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) >>>> at >>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) >>>> at >>>> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) >>>> at >>>> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) >>>> at >>>> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) >>>> at java.lang.Thread.run(Thread.java:722) >>>> Caused by: java.lang.NullPointerException >>>> at >>>> org.jaggeryjs.hostobjects.db.DatabaseHostObject.jsConstructor(DatabaseHostObject.java:87) >>>> 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:601) >>>> at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:126) >>>> ... 72 more >>>> >>>> >>>> Is there a way to synchronize the function in Jaggery or any other >>>> suggestion to get rid from this error? >>>> >>>> Any help would be appreciated. >>>> >>>> Thanks. >>>> Ishara Cooray >>>> Senior Software Engineer >>>> Mobile : +9477 262 9512 >>>> WSO2, Inc. | http://wso2.com/ >>>> Lean . Enterprise . Middleware >>>> >>> >>> >>> _______________________________________________ >>> Dev mailing list >>> [email protected] >>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>> >>> >> >> >> -- >> Regards, >> >> Dunith Dhanushka, >> Senior Software Engineer - BAM, >> WSO2 Inc, >> >> Mobile - +94 71 8615744 >> Blog - dunithd.wordpress.com <http://blog.dunith.com> >> Twitter - @dunithd <http://twitter.com/dunithd> >> > >
_______________________________________________ Dev mailing list [email protected] http://wso2.org/cgi-bin/mailman/listinfo/dev
