The CompareNumerics Condition

The CompareNumerics Condition can be used to compare two numerical string/variable.

Example:

<condition type="compareversions" id="isValidWrapperJavaVersion">
    <arg1>${my_number}</arg1>
    <arg2>1000</arg2>
    <operator>lt</operator>
</condition>

The CompareNumerics condition has been introduced in IzPack 5.0.

Nested Elements

The CompareNumerics condition takes three elements : a name, a value and an operator.

arg1

This is a mandatory nested element, defining the left numeric value to compare. Any string is allowed, IzPack will try to resolve it as a version string.

arg2

This is a mandatory nested element, defining the right numeric value to compare. Any string is allowed, IzPack will try to resolve it as a version string.

operator

This is a mandatory nested element, specifying the comparison operation to apply

Allowed values:

• eq - check whether both versions are equal (=)
• ne - check whether both versions differ (not equal) (<>)
• leq - check whether the left version is less than or equal the right version (<=)
• lt - check whether the left version is less than the right version (<)
• geq - check whether the left version is greater than or equal the right version (>=)
• gt - check whether the left version is greater than the right version (>)