[richfaces-issues] [JBoss JIRA] Assigned: (RF-10035) Richfaces creates a org.apache.xerces.jaxp.DocumentBuilder instance for each request in ResponseWriterContentHandler.java, which causes bad performance.

[Jay Balunas (JIRA)]

     [ https://issues.jboss.org/browse/RF-10035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jay Balunas reassigned RF-10035:
--------------------------------

    Assignee: Jay Balunas


> Richfaces creates a org.apache.xerces.jaxp.DocumentBuilder instance for each request in ResponseWriterContentHandler.java, which causes bad performance.
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: RF-10035
>                 URL: https://issues.jboss.org/browse/RF-10035
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>            Reporter: Gary Hu
>            Assignee: Jay Balunas
>
> The thread dump shows that the Richfaces creates a org.apache.xerces.jaxp.DocumentBuilder instance for each request.
> #
> "ajp-10.176.196.243-48009-166" daemon prio=3 tid=0x0000000104c2cc00 nid=0x739 waiting for monitor entry [0xfffffffe2d0f6000..0xfffffffe2d0ff540]
> #
>    java.lang.Thread.State: BLOCKED (on object monitor)
> #
>  at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
> #
>  - waiting to lock <0xfffffffe700000e0> (a sun.misc.Launcher$AppClassLoader)
> #
>  at java.lang.ClassLoader.loadClass(Unknown Source)
> #
>  at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1299)
> #
>  at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1229)
> #
>  at org.apache.xerces.impl.dv.ObjectFactory.findProviderClass(Unknown Source)
> #
>  at org.apache.xerces.impl.dv.ObjectFactory.newInstance(Unknown Source)
> #
>  at org.apache.xerces.impl.dv.DTDDVFactory.getInstance(Unknown Source)
> #
>  at org.apache.xerces.impl.dv.DTDDVFactory.getInstance(Unknown Source)
> #
>  at org.apache.xerces.parsers.XML11Configuration.<init>(Unknown Source)
> #
>  at org.apache.xerces.parsers.XIncludeAwareParserConfiguration.<init>(Unknown Source)
> #
>  at org.apache.xerces.parsers.XIncludeAwareParserConfiguration.<init>(Unknown Source)
> #
>  at sun.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
> #
>  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
> #
>  at java.lang.reflect.Constructor.newInstance(Unknown Source)
> #
>  at java.lang.Class.newInstance0(Unknown Source)
> #
>  at java.lang.Class.newInstance(Unknown Source)
> #
>  at org.apache.xerces.parsers.ObjectFactory.newInstance(Unknown Source)
> #
>  at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
> #
>  at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
> #
>  at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source)
> #
>  at org.apache.xerces.parsers.DOMParser.<init>(Unknown Source)
> #
>  at org.apache.xerces.jaxp.DocumentBuilderImpl.<init>(Unknown Source)
> #
>  at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)
> #
>  at org.ajax4jsf.context.ResponseWriterContentHandler.<init>(ResponseWriterContentHandler.java:48)
> #
>  at org.ajax4jsf.context.ViewResources$HeadResponseWriter.<init>(ViewResources.java:259)
> The creation of the org.apache.xerces.jaxp.DocumentBuilder instance is very expensive. We should reuse the org.apache.xerces.jaxp.DocumentBuilder instance and call the DocumentBuilder's reset() method to initialize it.

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