This page describes syntax for different kinds of searches in the Ontology. You can search in the Ontology from Workshop using the filter list or Object Explorer from the search bar.
Regular expression search is in the beta phase of development and may not be available on your enrollment. It also may not be available in all applications. Functionality may change during active development.
Regular expression (regex) search in the Ontology uses a syntax that is similar to typical regular expressions but with some differences:
cat will only match the exact value cat, not values that contain it such as concatenate. To perform a substring match, add .* before and after your pattern, for example, .*cat.* would match any value containing cat.^ and $ anchors are not supported. Because every match already implicitly starts at the beginning and ends at the end of the value, these anchors are redundant.. matches any single character.
c.t would match cat, cot, cut, and so on.? makes the previous character optional (matches zero or one times).
colou?r would match both color and colour.+ repeats the previous character one or more times.
go+d would match god, good, goood, and so on, but not gd.* repeats the previous character zero or more times.
go*d would match gd, god, good, goood, and so on.{} defines the minimum and maximum number of times the preceding character can repeat. {2} means the previous character must repeat exactly twice, {2,} means the previous character must repeat at least twice, and {2,4} means the previous character must repeat between 2 and 4 times (inclusive).
go{2}d would match only good. Searching for go{2,4}d would match good, goood, and gooood.| is the OR operator, allowing you to match one pattern or another.
cat|dog would match either cat or dog.() forms a group within an expression so that operators can apply to the entire group rather than just the previous character.
(un)?happy would match both happy and unhappy, because the ? makes the entire un group optional.[] matches any single character listed inside the brackets.
gr[ae]y would match both gray and grey. You can use - to define a range, so [a-z] matches any lowercase letter, [0-9] matches any digit, and [A-Za-z] matches any letter regardless of case. If the sequence begins with ^, the set is negated, so [^0-9] matches any character that is not a digit. If - is the first character or escaped with \, it is treated as a literal dash." creates groups of string literals, allowing you to match an exact phrase rather than interpreting each character as a regex operator.
"v2.0" would match the literal text v2.0. Without the quotes, the . would be treated as a wildcard, potentially matching v2X0 or v200.\ is used as an escape character, allowing you to search for characters that would otherwise be treated as operators. It also provides shorthand character classes:
\d matches any digit (0-9). \D matches any character that is not a digit (letters, punctuation, spaces, and so on).\s matches any whitespace character, such as spaces, tabs, and newlines. \S matches any character that is not whitespace.\w matches any word character (letters, digits, and underscores: a-z, A-Z, 0-9, _). \W matches any character that is not a word character, such as punctuation, spaces, and so on.\d{3}-\d{4} would match patterns like 555-1234 or 800-5678. Searching for \w+\s\w+ would match any two words separated by a space, such as hello world or John Smith. To search for a literal dot, use \.. For example, example\.com would match example.com without matching exampleXcom.