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Posted to commons-dev@ws.apache.org by "Toshiro Takase (JIRA)" <ji...@apache.org> on 2006/04/07 14:48:23 UTC
[jira] Created: (WSCOMMONS-9) Thread safety of
XML{Input|Output}Factory.createXMLStream{Reader|Writer}
Thread safety of XML{Input|Output}Factory.createXMLStream{Reader|Writer}
------------------------------------------------------------------------
Key: WSCOMMONS-9
URL: http://issues.apache.org/jira/browse/WSCOMMONS-9
Project: WS-Commons
Type: Bug
Components: AXIOM
Environment: Windows
Reporter: Toshiro Takase
In StAXOMBuilder and MTOMXMLStreamWriter (renamed from OMOutputImpl), XML{Input|Output}Factory is created just once now.
It is great to reuse XMLInputFactory and XMLOutputFactory instance, I think.
But I am not sure whether XMLInputFactory.createXMLStreamReader() and XMLOutputFactory.createXMLStreamWiter() have thread safety or not.
It seems that JSR-173 StAX specification does not mention their thread safety.
IMHO, strictly speaking, these factories can be broken if these methods are called concurrently.
These methods can be enclosed by synchronized block, or a factory instance pool or something can be made.
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[jira] Updated: (WSCOMMONS-9) Thread safety of
XML{Input|Output}Factory.createXMLStream{Reader|Writer}
Posted by "Toshiro Takase (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/WSCOMMONS-9?page=all ]
Toshiro Takase updated WSCOMMONS-9:
-----------------------------------
Attachment: patch.zip
A possible implementation of factory instance pool.
"svn diff" against latest repository and 2 added classes.
I am not sure whether this is the best way or not.
> Thread safety of XML{Input|Output}Factory.createXMLStream{Reader|Writer}
> ------------------------------------------------------------------------
>
> Key: WSCOMMONS-9
> URL: http://issues.apache.org/jira/browse/WSCOMMONS-9
> Project: WS-Commons
> Type: Bug
> Components: AXIOM
> Environment: Windows
> Reporter: Toshiro Takase
> Attachments: patch.zip
>
> In StAXOMBuilder and MTOMXMLStreamWriter (renamed from OMOutputImpl), XML{Input|Output}Factory is created just once now.
> It is great to reuse XMLInputFactory and XMLOutputFactory instance, I think.
> But I am not sure whether XMLInputFactory.createXMLStreamReader() and XMLOutputFactory.createXMLStreamWiter() have thread safety or not.
> It seems that JSR-173 StAX specification does not mention their thread safety.
> IMHO, strictly speaking, these factories can be broken if these methods are called concurrently.
> These methods can be enclosed by synchronized block, or a factory instance pool or something can be made.
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[jira] Resolved: (WSCOMMONS-9) Thread safety of
XML{Input|Output}Factory.createXMLStream{Reader|Writer}
Posted by "Davanum Srinivas (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/WSCOMMONS-9?page=all ]
Davanum Srinivas resolved WSCOMMONS-9:
--------------------------------------
Resolution: Fixed
Please see StAXUtils.java in AXIOM. (created from your code)
thanks,
dims
> Thread safety of XML{Input|Output}Factory.createXMLStream{Reader|Writer}
> ------------------------------------------------------------------------
>
> Key: WSCOMMONS-9
> URL: http://issues.apache.org/jira/browse/WSCOMMONS-9
> Project: WS-Commons
> Type: Bug
> Components: AXIOM
> Environment: Windows
> Reporter: Toshiro Takase
> Attachments: patch.zip
>
> In StAXOMBuilder and MTOMXMLStreamWriter (renamed from OMOutputImpl), XML{Input|Output}Factory is created just once now.
> It is great to reuse XMLInputFactory and XMLOutputFactory instance, I think.
> But I am not sure whether XMLInputFactory.createXMLStreamReader() and XMLOutputFactory.createXMLStreamWiter() have thread safety or not.
> It seems that JSR-173 StAX specification does not mention their thread safety.
> IMHO, strictly speaking, these factories can be broken if these methods are called concurrently.
> These methods can be enclosed by synchronized block, or a factory instance pool or something can be made.
--
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