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The Regular Expression tool

Use the Regular Expression tester to test whether a text pattern matches the regular expression.

Starting the tester

  1. Use the Application Explorer to open the standard activity Code-Pega-Parse.RegExpTester.
  2. Click the toolbar Run button (Run). A test input form appears.
  3. Select No test page. Click Run Rule.
  4. Leave the parameter values blank. Click Execute.

Completing the detail

5. Complete the detail form.

Field

Description
Regular Expression

Enter a regular expression to be used, using syntax conforming to the Java implementation of regular expressions Java.util.regex.Pattern.
Source

Enter source text to be searched for matches to the regular expression.
UNIX Lines

Select to recognize only newline characters (\n, also called line feed) as end-of-line delimiters. Clear to recognize additional characters or character pairs as end-of-line delimiters: carriage return (\r), carriage return followed by newline, next-line (\u0085), line-separator (\u2028) and paragraph-separator (\u2029).
Multilines

Select to cause the expressions ^ and $ to match immediately after or immediately before, respectively, a line terminator or the end of the input sequence.

Clear to have these expressions only match at the beginning and the end of the entire input sequence
Canonical Equivalence

Select to cause two characters to considered to match if, and only if, their full canonical decompositions match.

The expression "a\u030A", for example, matches the string "?" when this flag is specified. By default, matching does not take canonical equivalence into account.
Comments

Select to ignore all white space (tabs and spaces) within the Source text, and to ignore all material starting with a comment character # through the end of the line.
Dot Matches All

Select to indicate that a period character is to match any character including a line terminator. Clear to indicate that a period character is to match any character except a line terminator.
ASCII Case Insensitive

Select to match uppercase with lowercase ASCII characters.
Unicode Case Insensitive

Select to match uppercase with lowercase ASCII characters.

6. Click Test Expression.

7. A table of results lists each match of the regular expression found in the Source text.

Related topics About Transform rules

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