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Chapter 5. Application Developer XML Tools 93
by the location path. Location paths can recursively contain expressions that are
used to filter sets of nodes. A location path has three steps:
1. An axis, which specifies the tree relationship between the nodes selected by
the location step and the context node.
2. A node test, which specifies the node type and expanded-name of the nodes
selected by the location step.
3. Zero or more predicates, which use arbitrary expressions to further refine the
set of nodes selected by the location step.
Figure 5-10 XPath definition
After you finish with the location paths, the next tab allows the usage of a
operators, as shown in Figure 5-11. This wizard provides you with a list of
node-set operators, boolean operators, and numeric operators. Expanding any
on the list will show the available operators, from which you can select your
choice.