Milestone XProtect Enterprise 2014 Manuel d'utilisateur télécharger pdf (Page 123)

Milestone XProtect

Enterprise

2014

Administrator's Manual

www.milestonesys.com

123

Advanced configuration

Name

Description

Event message expression

Displays the string which will be used for the actual package

analysis. The field is not directly editable. However, you can

position the cursor inside the field in order to determine where a

new item should be included when you click the Add button or one

of the parenthesis or operator buttons described in the following.

Likewise, you can position the cursor inside the field in order to

determine where an item should be removed when clicking the

Remove button: The item immediately to the left of the cursor will

be removed when you click the Remove button.

 (: Lets you add a start parenthesis character to the Event

message expression field. Parentheses can be used to

ensure that related terms are processed together as a

logical unit; in other words, they can be used to force a

certain processing order in the analysis. Example: If using

("User001" OR "Door053") AND "Sunday", the two terms

inside the parenthesis will be processed first, then the result

will be combined with the last part of the string. In other

words, XProtect Enterprise will first look for any packages

containing either of the terms User001 or Door053, then it

will take the results and run through them in order to see

which packages also contain the term Sunday.

 ): Lets you add an end parenthesis character to the Event

message expression field.

 AND: Lets you add an AND operator to the Event message

expression field. With an AND operator, you specify that the

terms on both sides of the AND operator must be present.

Example: If using User001 AND Door053 AND Sunday, the

term User001 as well as the term Door053 as well as the

term Sunday must be present in order for the criterion to be

met. It is not enough for only one or two of the terms to be

present. As a rule of thumb, the more terms you combine

with AND, the fewer results you will retrieve:

Combinations with AND yields few results

(indicated in red)

 OR: Lets you add an OR operator to the Event message

expression field. With an OR operator, you specify that

either one or another term must be present. Example: If

using User001 OR Door053 OR Sunday, the term User001

or the term Door053 or the term Sunday must be present in

order for the criterion to be met. The criterion is satisfied

even if only one of the terms is present. As a rule of thumb,

the more terms you combine with OR, the more results you

will retrieve:

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Milestone XProtect Enterprise 2014 Manuel d'utilisateur Page 123

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