[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511235 ] Oliver Heger commented on CONFIGURATION-282: A fix was committed that initializes the default expression engine every time if it is null. Can you please check whether this solves your problem? Unfortunately I have no idea how to write a unit test that demonstrates the problem. However because the defaultExpressionEngine field is now null at the beginning, code coverage should be complete. There is now some additional overhead because of the required synchronization of the static getDefaultExpressionEngine() method, which also gets called if no specific expression engine is set for a configuration instance. This could be avoided if the default expression engine is fetched once in the constructor of HierarchicalConfiguration and copied into the member field for the local expression engine. The drawback is that this could break existing code that relies on the fact that changing the default expression engine immediately impacts all configuration instances that have no specific expression engine set. So I would prefer making this change only in a major release. NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst Assignee: Oliver Heger java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509599 ] Dennis Kieselhorst commented on CONFIGURATION-282: -- I went through the logs: you're right... the exception only occurs after a redeployment or a server restart. NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509651 ] Oliver Heger commented on CONFIGURATION-282: So, the cause for this problem seems to be the static field for the default expression engine in HierarchicalConfiguration. After a redeploy it obviously looses its value and is set to null. I guess, it should be possible to initialize it lazily when it is accessed and it is null. But then the getDefaultExpressionEngine() method has to be synchronized. Does anybody have a better idea? There are probably other static fields in other classes, which can cause similar problems. NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12508808 ] Dennis Kieselhorst commented on CONFIGURATION-282: -- Unfortunately I cannot add a testcase yet, because the error only occurs in production environment. I will try to reproduce it. I think this is the corresponding line: http://jakarta.apache.org/commons/configuration/xref/org/apache/commons/configuration/HierarchicalConfiguration.html#721 NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12508919 ] Oliver Heger commented on CONFIGURATION-282: A NPE on this line would mean that getExpressionEngine() returns null, which normally should not happen. Is it possible that you do something with serialization or hot-deployment of your application? This could be an explanation why the static defaultExpressionEngine field is null. NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[jira] Commented: (CONFIGURATION-282) NPE in HierarchicalConfiguration.fetchNodeList
[ https://issues.apache.org/jira/browse/CONFIGURATION-282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12508306 ] Oliver Heger commented on CONFIGURATION-282: It would really be helpful if you could provide some more information: How did you create the configuration object, which properties were set and which key did you pass in. Since the last release development has been going on, so the line numbers are no longer valid. Thanks. NPE in HierarchicalConfiguration.fetchNodeList -- Key: CONFIGURATION-282 URL: https://issues.apache.org/jira/browse/CONFIGURATION-282 Project: Commons Configuration Issue Type: Bug Affects Versions: 1.4 Environment: Linux, Java 1.5 Reporter: Dennis Kieselhorst java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:667) at org.apache.commons.configuration.AbstractConfiguration.getBoolean(AbstractConfiguration.java:633) java.lang.NullPointerException at org.apache.commons.configuration.HierarchicalConfiguration.fetchNodeList(HierarchicalConfiguration.java:721) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.fetchNodeList(AbstractHierarchicalFileConfiguration.java:338) at org.apache.commons.configuration.HierarchicalConfiguration.getProperty(HierarchicalConfiguration.java:284) at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.getProperty(AbstractHierarchicalFileConfiguration.java:319) at org.apache.commons.configuration.AbstractConfiguration.resolveContainerStore(AbstractConfiguration.java:1222) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1097) at org.apache.commons.configuration.AbstractConfiguration.getString(AbstractConfiguration.java:1077) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
