Predicate specifies XPath expressions written in square bracket. It is used to restrict the selected nodes in a node set for some conditions. See the use of predicate in the “employee” example.
|1)||/class/employee||It will select first employee element which is child of the class element.|
|2)||/class/employee[last()]||It will select last employee element which is child of the class element.|
|3)||/class/employee[@id = 002]||It will select employee element where id is 002.|
|4)||/class/salary[salary > 10000]||It will select employee element where salary is greater than 10000.|
XPath Predicate Example
Let’s take an example to create a table of <employee> element with their details, by iterating over each employee. This example uses predicate to calculate the position of the employee node and then print the employee details.
Note:In the above example, you can see that all four queries are fetched.