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XPath Functions

Use this page as the function catalog for XPath expressions used in Emakin process definitions, forms, and queries.

XPath 1.0 standard includes the following set of functions. Please see https://developer.mozilla.org/en-US/docs/Web/XPath/Functions for more information.

  • last()
    returns the last item from a node set
  • position()
    returns the position of node
  • count()
    returns the number of nodes in a node set
  • id()
    returns the id attribute of node
  • local-name()
    returns the local name of a node
  • namespace-uri()
    returns the namespace uri of a node
  • name()
    return the name of a node
  • string()
    converts the given argument to string
  • concat()
    concatenates two or more strings and returns the resulting string
  • starts-with()
    checks whether the first string starts with the second string and returns true or false
  • contains()
    determines whether the first argument string contains the second argument string and returns boolean true or false
  • substring-before()
    returns a string that is the part of a given string before a given substring
  • substring-after()
    returns a string that is the rest of a given string after a given substring
  • substring()
    returns a part of a given string
  • string-length()
    returns the length of string
  • normalize-space()
    strips leading and trailing white-space from a string
  • translate()
    translates a set of characters and returns the translated string
  • boolean()
    evaluates an expression and returns true or false
  • not()
    evaluates a boolean expression and returns the opposite value
  • true()
    returns a boolean value of true
  • false()
    returns a boolean value of false
  • lang()
    determines whether the context node matches the given language and returns boolean true or false
  • number()
    converts an object to a number and returns the number
  • sum()
    returns a number that is the sum of the numeric values of each node in a given node-set
  • floor()
    evaluates a decimal number and returns the largest integer less than or equal to the decimal number
  • ceiling()
    evaluates a decimal number and returns the smallest integer greater than or equal to the decimal number
  • round()
    returns a number that is the nearest integer to the given number

Emakin Specific Functions

In addition to standard functions, Emakin also supports the following functions as a helper.