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Date: Fri, 23 Mar 2012 13:39:34 +0000 (UTC)
From: "Kaushik Mukherjee (Updated) (JIRA)" <dev@tuscany.apache.org>
To: dev@tuscany.apache.org
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Subject: [jira] [Updated] (TUSCANY-4035) Application could possibly fail to
 start if multiple threads are loading the same schema
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     [ https://issues.apache.org/jira/browse/TUSCANY-4035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kaushik Mukherjee updated TUSCANY-4035:
---------------------------------------

    Attachment:     (was: TUSCANY-4035.patch)
    
> 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
>
> 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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