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RE: UnsupportedOperationException
Hi all
I am facing this below problem while I am trying to modify the list ............
the list is of model class type . Actually I am trying to delete some element from the list .
Please help us out.
Error trace is below.
java.lang.UnsupportedOperationException: Please make a copy of
this read-only list before modifying it.
at
com.liferay.portal.kernel.util.UnmodifiableList$1.remove(UnmodifiableList.java:122)
at
com.addMe.action.DeviceDrag.serveResource(DeviceDrag.java:2981)
at
com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:122)
at
com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:82)
at
com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:116)
at
com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)
at
com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:119)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at
com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:580)
at
com.liferay.portlet.InvokerPortletImpl.invokeResource(InvokerPortletImpl.java:675)
at
com.liferay.portlet.InvokerPortletImpl.serveResource(InvokerPortletImpl.java:441)
at
com.liferay.portlet.PortletContainerImpl._doServeResource(PortletContainerImpl.java:792)
at
com.liferay.portlet.PortletContainerImpl.serveResource(PortletContainerImpl.java:152)
at
com.liferay.portlet.SecurityPortletContainerWrapper.serveResource(SecurityPortletContainerWrapper.java:166)
at
com.liferay.portlet.RestrictPortletContainerWrapper.serveResource(RestrictPortletContainerWrapper.java:166)
at
com.liferay.portal.kernel.portlet.PortletContainerUtil.serveResource(PortletContainerUtil.java:164)
at
com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:386)
at
com.liferay.portal.action.LayoutAction.doExecute(LayoutAction.java:200)
at
com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:95)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at
com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:179)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at
com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:549)
at
com.liferay.portal.servlet.MainServlet.service(MainServlet.java:526)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:119)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at
com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:156)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:243)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:267)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at
com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:226)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
at
com.liferay.portal.servlet.filters.urlrewrite.UrlRewriteFilter.processFilter(UrlRewriteFilter.java:57)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:119)
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:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Hi,
If you are trying to delete something from liferay generated entities, please do it with help of *LocalServiceUtil methods
OR
Simply loop through the list and assign it to a new list.
Hi Manish,
The log clearly shows that you are working with UnmodifiableList and you need to make a copy of it if you want to modify(which is the solution).
java.lang.UnsupportedOperationException: Please make a copy of
this read-only list before modifying it.
at com.liferay.portal.kernel.util.UnmodifiableList$1.remove(UnmodifiableList.java:122)
It's difficult to say how you have ended up using UnmodifiableList without seeing the previous part of the code where you have created the List in first placed. My gut feeling says you might have used ListUtil.sublist() method which is internally creating sublist using UnmodifiableList.
Regards,
Sandeep Nair
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