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XPath notation
XPath notation used in this specification
A simple subset of the XPath language [XPath] is used in the description of an element, attribute
or value to identify other elements, attributes and/or values.
The simple subset of XPath used is:
• Element subelement hierarchy is indicated by a slash.
For example: element/element
• Element attribute hierarchy is indicated by a slash and an at (@) symbol.
For example: element/@attribute
• Paths beginning with a single slash: '/' indicate root elements.
For example: /JDF indicates the root JDF node
• Paths beginning with a double slash '//' indicate elements with any parent.
For example: //ResourcePool indicates a ResourcePool element in any element
• Paths containing square brackets that enclose a predicate describe an element that is restricted
by the predicate.
Different types of predicates are used in this document:
• E[@A = V]
The XPath specifies an element E whose attribute A has the value V.
• E[contains(@A = V)]
The XPath specifies an element E whose attribute A has some value that contains V.
• E[@A]
The XPath specifies an element E in which attribute A is present.
XPath notation
Chapter 10 - JDF interface specification 225
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