Opened 15 years ago
Closed 15 years ago
#1441 closed defect (fixed)
Null pointer exception when checking dependent items on deleted user
Reported by: | base | Owned by: | everyone |
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Priority: | minor | Milestone: | BASE 2.14.2 |
Component: | core | Version: | |
Keywords: | NullPointerException delete user | Cc: |
Description (last modified by )
Hi,
After I deleted a user and want to see items 'using User item', I get this NPE:
java.lang.NullPointerException on page /views/trashcan/view_item.jsp
Version BASE 2.13.1 (build #5134; schema #75) Web server Apache Tomcat/6.0.20 Database Server PostgreSQL 8.3.8 Database Dialect org.hibernate.dialect.PostgreSQLDialect JDBC Driver org.postgresql.Driver (version 8.4) Java runtime Java(TM) SE Runtime Environment (1.6.0_03-b05), Sun Microsystems Inc. Operating system Linux amd64 2.6.9-78.0.22.ELsmp Memory Total: 486.3 MB Free: 262.1 MB Max: 910.3 MB Browser Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.15) Gecko/2009102918 CentOS/3.0.15-3.el5.centos Firefox/3.0.15 Error message Stack trace java.lang.NullPointerException ...at ItemProxy.compareTo(ItemProxy.java:49) ...at ItemProxy.compareTo(ItemProxy.java:30) ...at java.util.TreeMap.put(TreeMap.java:545) ...at java.util.TreeSet.add(TreeSet.java:238) ...at BasicItem.addUsingItems(BasicItem.java:298) ...at User.getUsingItems(User.java:377) ...at org.apache.jsp.views.trashcan.view_005fitem_jsp._jspService(view_005fitem_jsp.java:200) ...at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ...at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) ...at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) ...at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) ...at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) ...at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) ...at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) ...at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ...at net.sf.basedb.clients.web.servlet.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:70) ...at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) ...at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ...at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) ...at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) ...at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) ...at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) ...at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) ...at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) ...at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) ...at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) ...at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) ...at java.lang.Thread.run(Thread.java:619)
Change History (3)
comment:1 by , 15 years ago
Description: | modified (diff) |
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Milestone: | → BASE 2.4.2 |
comment:2 by , 15 years ago
Milestone: | BASE 2.4.2 → BASE 2.14.2 |
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comment:3 by , 15 years ago
Resolution: | → fixed |
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Status: | new → closed |
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I get this also, and I think the same error can happen for other items as well.
It seems like root cause is found in the
BasicItem.addUsingItems()
method. The call toitem.getClass()
can return a dynamic Hibernate-generated proxy class. This class is not known by BASE and theItem.fromDataClass()
returns null. The problems should be easy to fix by callingItem.fromDataObject(item)
instead.