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Opalis Integration Pack for Microsoft Operations Manager 2005 > Objects > Filter Behavior for Monitor Alert

Filter Behavior for Monitor Alert
The Monitor Alert object use filters to determine what properties of the detected MOM alerts will trigger the Policy. Each part of the MOM Alert will be compared against the corresponding values of the filter to determine if they meet the filter criteria before any triggering will take place. When matching against text fields, the filter allows you to select three different methods of comparison. An option is provided to either match or not match the filter using each method. The following will describe how each filter method behaves; the “Does not” version of each method type will cause alerts that do not match the filter to trigger the Policy.
Equals – The property of the alert must match the text specified in the filter exactly.
Contains – The property of the alert must contain the exact text specified in the filter. Unlike the Equals behavior, there can be other text surrounding the matching text.
Matches Pattern – Use wildcards to specify a pattern that the text must match. The two wildcard values are the asterisk (*) and the question mark (?). The behavior of the wildcards is similar to the Windows Command Prompt. The asterisk will match any number of characters, while the question mark will only match one character. For example, if you have a filter specified as “a*b”, the pattern would match any text that has an “a” at the beginning and a “b” at the end. So, it will match “aab”, “abbbbbb”, and “abbcb”, but it will not match “ba” or “abba”. Using the question mark, if you have a filter specified as “a?b”, the behavior would be that the pattern will match any text that has an “a” at the beginning, any single character in the middle, and “b” at the end. So this filter will match “a b”, “abb”, and “aqb”, but it will not match “abbb” or “ab”.

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