Filter wildcard support
When you are creating a filter, value strings can include the percent sign (%) as a wildcard character. The wildcard character (%) enables the collector to match strings without you having to provide all possible string values for a filter value.
Note: The use of wildcards in filters can potentially
result in the collection of significant amounts of captured data.
Filtering fields can be fully qualified, or partially qualified,
by using the percent sign wildcard character. You can insert the wildcard
character (%) anywhere within the value string. The presence of the
wildcard character (%) represents a string of zero of more characters.
It can be embedded within a string in the following ways to achieve
the following results:
- %
- Matches all strings.
- %a
- Matches all strings that end with the letter a, for example: a, ba, cba.
- a%
- Matches all strings that start with the letter a, for example: a, ab, abc.
- a%a
- Matches all strings the begin and end with the letter a, for example a, aba, aca.
Note: The wildcard character (%) cannot be used explicitly
as part of the filter value.