12:35 p.m.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
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12:44 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Przemyslaw Rozycki updated JBRULES-1996:
----------------------------------------
Attachment: DirectoryScanner.java.patch
The patch, that should IMHO solve the problem.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Attachments: DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
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5:55 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Sigurd Knippenberg commented on JBRULES-1996:
---------------------------------------------
The class has two places where an instance of FileScanner is created. You probably want to
set the listener in both places, instead of just one.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Attachments: DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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9:36 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Przemyslaw Rozycki commented on JBRULES-1996:
---------------------------------------------
Sigurd,
you are probably right. I'm not so well familiar with Drools source code, so I could
miss one place. Anyway, I'm glad, that you confirmed the bug.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Attachments: DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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8:25 a.m.
New subject: [JBoss JIRA] Closed: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Mark Proctor closed JBRULES-1996.
---------------------------------
Fix Version/s: 4.0.8
Resolution: Done
I fixed this for 4.0.8, it's already fixed in 5.0 trunk.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Fix For: 4.0.8
Attachments: DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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11:28 a.m.
New subject: [JBoss JIRA] Reopened: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Przemyslaw Rozycki reopened JBRULES-1996:
-----------------------------------------
According to Sigurd's note, it was not the only place where listener should be added.
I would like to add additional patch that, I hope, really solves the problem.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Fix For: 4.0.8
Attachments: DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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11:30 a.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Przemyslaw Rozycki updated JBRULES-1996:
----------------------------------------
Attachment: DirectoryScanner.java.2.patch
Addtional patch, that, I hope, really solves the problem.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Fix For: 4.0.8
Attachments: DirectoryScanner.java.2.patch, DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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11:32 a.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/jira/browse/JBRULES-1996?page=com.atlassian.jira.p...
]
Przemyslaw Rozycki commented on JBRULES-1996:
---------------------------------------------
To be precise, I created the patch for the revision 25870 of the 4.0.x branch.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/jira/browse/JBRULES-1996
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Fix For: 4.0.8
Attachments: DirectoryScanner.java.2.patch, DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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11:52 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://jira.jboss.org/browse/JBRULES-1996?page=com.atlassian.jira.plugin...
]
Mark Proctor updated JBRULES-1996:
----------------------------------
Fix Version/s: 5.2.0.M1
(was: 4.0.8)
These issues where all marked for 4.0.8, we no longer maintain the 4.0.x branch in the
community. I'm moving them to 5.2.0.M2, so they can be checked that they no longer
cause a problem there, and fixed if they do. If you require these fixed at the 4.0.x
branch level, then please contact sales(a)jboss.com for subscription based support.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://jira.jboss.org/browse/JBRULES-1996
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Fix For: 5.2.0.M1
Attachments: DirectoryScanner.java.2.patch, DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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3:44 a.m.
New subject: [JBoss JIRA] Closed: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://issues.jboss.org/browse/JBRULES-1996?page=com.atlassian.jira.plug...
]
Mark Proctor closed JBRULES-1996.
---------------------------------
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://issues.jboss.org/browse/JBRULES-1996
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Labels: agent, rule
Fix For: 5.2.0.M1
Attachments: DirectoryScanner.java.2.patch, DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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For more information on JIRA, see: http://www.atlassian.com/software/jira
3:44 a.m.
New subject: [JBoss JIRA] Resolved: (JBRULES-1996) NPE when using directory scanner and drl is incorrect.
[
https://issues.jboss.org/browse/JBRULES-1996?page=com.atlassian.jira.plug...
]
Mark Proctor resolved JBRULES-1996.
-----------------------------------
Resolution: Done
Not heard anything about this being broken in 5.x knowledge agent.
NPE when using directory scanner and drl is incorrect.
------------------------------------------------------
Key: JBRULES-1996
URL: https://issues.jboss.org/browse/JBRULES-1996
Project: Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK 1.5.0_11, Kubuntu Linux 8.10, x86, 32-bit
Reporter: Przemyslaw Rozycki
Assignee: Mark Proctor
Labels: agent, rule
Fix For: 5.2.0.M1
Attachments: DirectoryScanner.java.2.patch, DirectoryScanner.java.patch
When I use rule agent with directory scanner, and the rule that is being scanned contains
a bug, then I receive a NPE instead of error message:
java.lang.NullPointerException
at org.drools.agent.FileScanner.readPackage(FileScanner.java:102)
at org.drools.agent.FileScanner.getChangeSet(FileScanner.java:79)
at org.drools.agent.FileScanner.loadPackageChanges(FileScanner.java:57)
at
org.drools.agent.DirectoryScanner.loadPackageChanges(DirectoryScanner.java:43)
at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:330)
at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:298)
at org.drools.agent.RuleAgent.configure(RuleAgent.java:284)
at org.drools.agent.RuleAgent.init(RuleAgent.java:208)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:176)
at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164)
... (further entries of stack trace contains my application's lines)
When I looked into code I found that DirectoryScanner object, used by the agent uses
FileScanner object to scan each file in a directory. And the file scanner does not have a
listener set. That's why the NPE is thrown.
--
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4794
days inactive
5593
days old
10 comments
3 participants
participants (3)
-
Mark Proctor (JIRA) -
Przemyslaw Rozycki (JIRA)
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Sigurd Knippenberg (JIRA)