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From "Simon Laws (Closed) (JIRA)" <...@tuscany.apache.org>
Subject [jira] [Closed] (TUSCANY-4035) Application could possibly fail to start if multiple threads are loading the same schema
Date Fri, 23 Mar 2012 17:31:28 GMT

     [ https://issues.apache.org/jira/browse/TUSCANY-4035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simon Laws closed TUSCANY-4035.
-------------------------------

       Resolution: Fixed
    Fix Version/s: Java-SCA-2.0

Applied at revision: 1304516. Thanks for the patch Kaushik.
                
> Application could possibly fail to start if multiple threads are loading the same schema
> ----------------------------------------------------------------------------------------
>
>                 Key: TUSCANY-4035
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-4035
>             Project: Tuscany
>          Issue Type: Bug
>            Reporter: Kaushik Mukherjee
>            Assignee: Simon Laws
>             Fix For: Java-SCA-2.0
>
>         Attachments: TUSCANY-4035v2.patch
>
>
> This was an issue in Tuscany 1.x and is likely an issue in the 2.x code as well. The
fix in 1.x was to synchronize schema loading across all XSDModelResolvers.
> Starting multiple applications simultaneously can lead to an
> exception such as:
> org.apache.ws.commons.schema.XmlSchemaException: Schema name conflict in collection.
Namespace: http://my.namespace
> at 
> org.apache.ws.commons.schema.SchemaBuilder.handleXmlSchemaElement(SchemaBuilder.java:223)

> at
> org.apache.ws.commons.schema.SchemaBuilder.build(SchemaBuilder.java:202)
> at
> org.apache.ws.commons.schema.XmlSchemaCollection.read(XmlSchemaCollection.java:424)
> at
> org.apache.ws.commons.schema.XmlSchemaCollection.read(XmlSchemaCollection.java:347)
> at
> org.apache.ws.commons.schema.XmlSchemaCollection.read(XmlSchemaCollection.java:379)
> at
> org.apache.tuscany.sca.xsd.xml.XSDModelResolver.loadOnDemand(XSDModelResolver.java:204)
> at
> org.apache.tuscany.sca.xsd.xml.XSDModelResolver.aggregate(XSDModelResolver.java:240)
> at
> org.apache.tuscany.sca.xsd.xml.XSDModelResolver.resolveModel(XSDModelResolver.java:114)

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