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https://issues.apache.org/jira/browse/WSCOMMONS-539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benson Margulies resolved WSCOMMONS-539.
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Fix Version/s: XmlSchema 1.4.6
Resolution: Fixed
992758
> Infinite loop in XmlSchemaSerializer. setupNamespaces
> -----------------------------------------------------
>
> Key: WSCOMMONS-539
> URL: https://issues.apache.org/jira/browse/WSCOMMONS-539
> Project: WS-Commons
> Issue Type: Bug
> Components: XmlSchema
> Affects Versions: XmlSchema 1.4.6
> Reporter: Brian McDonald
> Priority: Critical
> Fix For: XmlSchema 1.4.6
>
> Attachments: stockquote2.wsdl.xml
>
>
> This block of code can cause an infinite loop:
> if (xsdPrefix == null) {
> //find a prefix to use
> xsdPrefix = "";
> if (ctx != null && ctx.getNamespaceURI(xsdPrefix) != null) {
> xsdPrefix = "xsd";
> }
> int count = 0;
> while (ctx != null && ctx.getNamespaceURI(xsdPrefix) !=
> null) {
> xsdPrefix = "xsd" + ++count;
>
> }
> }
> The crux of the problem is that getNamespaceURI will never return null. If
> the namespace uri isn't found it returns XMLConstants.NULL_NS_URI.
> This code should help:
> if(xsdPrefix == null) {
> //find a prefix to use
> xsdPrefix = XMLConstants.DEFAULT_NS_PREFIX;
> // Note: NULL_NS_URI is *not* the same as the null reference!
> if (ctx != null &&
> !XMLConstants.NULL_NS_URI.equals(ctx.getNamespaceURI(xsdPrefix))) {
> xsdPrefix = "xsd";
> }
> int count = 0;
> while (ctx != null &&
> !XMLConstants.NULL_NS_URI.equals(ctx.getNamespaceURI(xsdPrefix))) {
> xsdPrefix = "xsd" + ++count;
> }
> schemaObj.schema_ns_prefix = xsdPrefix;
> }
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