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Posted to dev@activemq.apache.org by "Giovani Seben (JIRA)" <ji...@apache.org> on 2009/03/24 17:22:42 UTC
[jira] Updated: (AMQ-2179) XPath selector fails to select messages
correctly when the expression evaluates to 'true'
[ https://issues.apache.org/activemq/browse/AMQ-2179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Giovani Seben updated AMQ-2179:
-------------------------------
Description:
Currently the XalanXPathEvaluator class will return 'true' or 'false' based on the existence of a node in the XML document that matches the XPath expression. However, XPath expressions themselves can return values of true or false based on a comparison criteria.
For example, for an input message:
{code}
<root>
<a key='first' num='1'/>
<b key='second' num='2'>b</b>
</root>
{code}
A consumer using an XPath selector with an expression such as:
{code}
XPATH '/root/b="b"'
{code}
should successfully select and consume the message above.
The evaluator today would attempt to retrieve a XML node with that expression, but it would fail and return false since the returned value of the expression is a Boolean.
The XPath Selector should be able to handle Boolean expressions.
was:
Currently the XalanXPathEvaluator class will return 'true' or 'false' based on the existence of a node in the XML document that matches the XPath expression. However, XPath expressions themselves can return values of true or false based on a comparison criteria.
For example, for an input message:
{code}
<root>
<a key='first' num='1'/>
<b key='second' num='2'>b</b>
</root>
{code}
A consumer using an XPath selector with an expression such as:
{code}
XPATH '/root/b/text()="b"'
{code}
should successfully select and consume the message above.
The evaluator today would attempt to retrieve a XML node with that expression, but it would fail and return false since the returned value of the expression is a Boolean.
The XPath Selector should be able to handle Boolean expressions.
> XPath selector fails to select messages correctly when the expression evaluates to 'true'
> ------------------------------------------------------------------------------------------
>
> Key: AMQ-2179
> URL: https://issues.apache.org/activemq/browse/AMQ-2179
> Project: ActiveMQ
> Issue Type: Bug
> Components: Selector
> Affects Versions: 5.0.0, 5.1.0, 5.2.0
> Environment: Windows XP
> Reporter: Giovani Seben
> Fix For: 5.3.0
>
>
> Currently the XalanXPathEvaluator class will return 'true' or 'false' based on the existence of a node in the XML document that matches the XPath expression. However, XPath expressions themselves can return values of true or false based on a comparison criteria.
> For example, for an input message:
> {code}
> <root>
> <a key='first' num='1'/>
> <b key='second' num='2'>b</b>
> </root>
> {code}
> A consumer using an XPath selector with an expression such as:
> {code}
> XPATH '/root/b="b"'
> {code}
> should successfully select and consume the message above.
> The evaluator today would attempt to retrieve a XML node with that expression, but it would fail and return false since the returned value of the expression is a Boolean.
> The XPath Selector should be able to handle Boolean expressions.
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