To open a macro diagram, double-click the macro’s icon in the SIS View macro list. Below is an example of a macro diagram, plus details on comparator, string, present, variable, literal, group operators, and macro invocation elements.
Comparator elements (equal, not-equal, greater-than, less-than)
Comparator elements work the same as well-known operators named similarly. Each operand/parameter can be:
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a specific value
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the value of any other existing variable
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a complex variable type (such as a
CalledPartyNumber) -
the result of a string-manipulation function (such as a substring or string-length).
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To configure a comparator element:
A dialog opens to configure the two operands for the comparason. |
Special string elements (starts-with, ends-with, contains, matches)
These operators, which return true or false (like comparator elements), check whether text strings start with, end with, or contain a sub-string; or match a regular expression.
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To configure a string element, double-click it. A dialog opens to set the values and variables for the operation. |
Present element
The present element checks if a variable is set — if (at the time of the check) it’s in the list of global variables that the SIS keeps.
Variable manipulator elements (assign, delete)
Through the assign element, a variable can be set to:
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a specific value,
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the value of any other existing variable
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a complex variable type (such as a
CalledPartyNumber) -
the result of a string-manipulation function (such as a substring or string-length).
Through the the delete element, an existing variable can be "unset".
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An assign or delete element implicitly always evaluates to true.
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Group operators (and, or, not)
Group operator elements represent the logical and, or, and not operators. As such, they are the only elements in a condition tree diagram (except the tree root) which have successor elements.
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The SIS scripting language uses short-circuit boolean evaluation. In this current release of VIA,, the order of arguments to You can view the generated XML in VIA to check that your expression is indeed correct. To fix any problems, you can simply remove the connections to each parameter in your |
Macro invocation element
Through the macro element, you can invoke other existing macros. When the SIS evaluates this element at runtime, it returns the value that the referenced macro returns.
