[jira] [Issue Comment Deleted] (CAMEL-14155) xpath throws NPE if body is null when saxon is used as JAXP implementation

["Ramu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-14155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ramu updated CAMEL-14155:
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    Comment: was deleted

(was: A comment with security level 'jira-users' was removed.)

> xpath throws NPE if body is null when saxon is used as JAXP implementation
> --------------------------------------------------------------------------
>
>                 Key: CAMEL-14155
>                 URL: https://issues.apache.org/jira/browse/CAMEL-14155
>             Project: Camel
>          Issue Type: Bug
>          Components: came-core
>            Reporter: Luigi De Masi
>            Assignee: Ramu
>            Priority: Major
>
> despite [XPath API spec|https://docs.oracle.com/javase/8/docs/api/javax/xml/xpath/XPathExpression.html#evaluate-java.lang.Object-javax.xml.namespace.QName-] states:
>  
> {quote}If a null value is provided for item, an empty document will be used for the context
> {quote}
> saxon, starting from 9.6, they decided to ignore it and throw NPE if the node is null, from [saxon javadoc|https://www.saxonica.com/html/documentation9.8/javadoc/net/sf/saxon/xpath/XPathExpressionImpl.html#evaluate-java.lang.Object-javax.xml.namespace.QName-]:
>  
> {quote}Contrary to the interface specification, Saxon does not supply an empty document when the value is null. This is because XPath 2.0 allows the context item to be "absent" (null). So Saxon executes the XPath expression with the context item undefined.
> {quote}
>  
>  So in case of xpath expression is executed against a null body or header, saxon throws an NPE
>  
>  



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