Xpath: Choosing the parent node value in xpath when a child node is present

Trying to generate an HTML table using JavaScript based on XML data.

When a child element like //host exists, I need to extract the value of a parent element called "name" from a different ancestor using XPath

The required channel name can be found in this XPath expression:

"/serverConfiguration/channels/channel/name"

This should only be done if the child element is located at:

"/serverConfiguration/channels/channel/sourceConnector/properties/listenerConnectorProperties/host"

Ensure the existence of the child element before extracting the channel name.

javascriptxmlxpath

Answer №1

When it comes to XPath, all you need is a predicate like 

/serverConfiguration/channels/channel[.//host]/name
or 
/serverConfiguration/channels/channel[sourceConnector/properties/listenerConnectorProperties/host]/name
.

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