Regular Expressions
A regular expression is a pattern-matching technique used extensively in UNIX environments. You use regular expressions in Designer to specify pattern-matching strings for some of its functions. For example, you can use a regular expression to specify an index, a property, or a mask in a webMethods Query Language (WQL) statement. You can also use a regular expression to specify the switch value for a BRANCH step.
Note:Integration Server and Designer use PERL regular expressions by default.
To specify a regular expression, you must enclose the expression between / symbols. When the server encounters this symbol, it knows to interpret the characters between these symbols as a pattern-matching string (that is, a regular expression).
A simple pattern-matching string such as /string/ matches any element that contains string. So, for example, the regular expression /webMethods/ would match all of the following strings:
"webMethods"
"You use webMethods Integration Server to execute services"
"Exchanging data with XML is easy using webMethods"
"webMethods Integration Server"
Important:
Characters in regular expressions are case sensitive.