[Exist-open] NullPointerException in DOMFile.getNodeValue()

[Christian H. <ch...@pi...>]

Hi,

when doing queries after an update to an eXist db (running with latest 
snapshot), I get a NullPointerException. The error occurs on line:

            if (rec.offset > rec.page.getPageHeader().getDataLength()) {

so presumably getPageHeader() return Null. (Full backtrace at the end of 
this email). What's odd this that after enough retries, the error goes 
away. Any clue as to what the problem might be? I'd be more than happy 
to help if you need more information; the error is quite reproductible here.

Thanks,

  Christian


23 juin 2004 15:33:23,858 [SocketListener-25] DEBUG (RpcServer.java 
[handleException]:561) -
java.lang.NullPointerException
        at org.exist.storage.store.DOMFile.getNodeValue(DOMFile.java:1321)
        at org.exist.storage.store.DOMFile.getNodeValue(DOMFile.java:1300)
        at org.exist.storage.NativeBroker$3.start(NativeBroker.java:1097)
        at 
org.exist.storage.store.DOMTransaction.run(DOMTransaction.java:56)
        at 
org.exist.storage.NativeBroker.getNodeValue(NativeBroker.java:1095)
        at org.exist.dom.NodeProxy.getNodeValue(NodeProxy.java:280)
        at org.exist.dom.NodeProxy.atomize(NodeProxy.java:535)
        at 
org.exist.xquery.value.OrderedValueSequence$Entry.<init>(OrderedValueSequence.java:132)
        at 
org.exist.xquery.value.OrderedValueSequence.add(OrderedValueSequence.java:81)
        at 
org.exist.xquery.value.OrderedValueSequence.addAll(OrderedValueSequence.java:93)
        at org.exist.xquery.ForExpr.eval(ForExpr.java:144)
        at 
org.exist.xquery.BindingExpression.eval(BindingExpression.java:97)
        at 
org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:45)
        at org.exist.xquery.PathExpr.eval(PathExpr.java:148)
        at 
org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:45)
        at org.exist.xquery.XQuery.execute(XQuery.java:107)
        at org.exist.xmlrpc.RpcConnection.doQuery(RpcConnection.java:254)
        at 
org.exist.xmlrpc.RpcConnection.executeQuery(RpcConnection.java:268)
        at org.exist.xmlrpc.RpcServer.executeQuery(RpcServer.java:127)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at 
org.exist.xmlrpc.AuthenticatedHandler.execute(AuthenticatedHandler.java:116)
        at 
org.exist.xmlrpc.AuthenticatedHandler.execute(AuthenticatedHandler.java:63)
        at org.apache.xmlrpc.XmlRpcWorker.invokeHandler(Unknown Source)
        at org.apache.xmlrpc.XmlRpcWorker.execute(Unknown Source)
        at org.apache.xmlrpc.XmlRpcServer.execute(Unknown Source)
        at org.apache.xmlrpc.XmlRpcServer.execute(Unknown Source)
        at org.exist.xmlrpc.RpcServlet.doPost(RpcServlet.java:39)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:366)
        at 
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:293)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:581)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1687)
        at 
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:544)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1637)
        at org.mortbay.http.HttpServer.service(HttpServer.java:875)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:806)
        at 
org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:956)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:823)
        at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:202)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:290)
        at org.mortbay.util.ThreadPool$JobRunner.run(ThreadPool.java:743)
        at java.lang.Thread.run(Thread.java:534)