[JXPATH-79] Error when accessing JXPathContext methods in Concurrent Scenario

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.2 Final
• Fix Version/s: 1.3
• Assignee: Unassigned
• Reporter: perumalraj
• Created: 20/Feb/07 23:59
• Updated: 21/May/07 14:33
• Resolved: 21/May/07 14:33

Description

I am getting following error when many parallel threads access JXPathContext methods.
(But In case of a single thread, It works fine).

Caused by: java.lang.NullPointerException
at org.apache.commons.jxpath.JXPathBasicBeanInfo.getPropertyDescriptor(JXPathBasicBeanInfo.java:104)
at org.apache.commons.jxpath.ri.model.beans.BeanPropertyPointer.getPropertyDescriptor(BeanPropertyPointer.java:267)
at org.apache.commons.jxpath.ri.model.beans.BeanPropertyPointer.isActualProperty(BeanPropertyPointer.java:151)
at org.apache.commons.jxpath.ri.model.beans.PropertyPointer.isActual(PropertyPointer.java:80)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStepNoPredicatesPropertyOwner(SimplePathInterpreter.java:191)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStep(SimplePathInterpreter.java:142)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStepNoPredicatesPropertyOwner(SimplePathInterpreter.java:232)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStep(SimplePathInterpreter.java:142)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStepNoPredicatesPropertyOwner(SimplePathInterpreter.java:232)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.doStep(SimplePathInterpreter.java:142)
at org.apache.commons.jxpath.ri.axes.SimplePathInterpreter.interpretSimpleLocationPath(SimplePathInterpreter.java:77)
at org.apache.commons.jxpath.ri.compiler.Path.getSingleNodePointerForSteps(Path.java:153)
at org.apache.commons.jxpath.ri.compiler.LocationPath.computeValue(LocationPath.java:82)
at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getValue(JXPathContextReferenceImpl.java:314)
at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getValue(JXPathContextReferenceImpl.java:280)

Issue Links

• duplicates: JXPATH-2 Using JXPath in multiple threads