<matches> Boolean Operator

This Boolean operator is used to determine whether a particular value matches a pattern. This operator has the value, pattern, and exact attributes. This operator has no child elements and evaluates to true if and only if the value of value matches the glob-style pattern contained in pattern. If exact is true, the values must be a case-sensitive match. Otherwise, the values can be a case-insensitive match.

Attributes for the <matches> Boolean Operator

The <matches> operator has the following attributes:

• value – A required attribute that is the value to be matched against the pattern. This attribute can reference simple substitution variables.

• pattern – A required attribute that is the pattern to be matched. This attribute can reference simple substitution variables.

• exact – An optional attribute that is true if a case-sensitive match should be performed, false otherwise. Defaults to false.

Example 2–9 Using the <matches> Boolean Operator

The following examples show how <matches> is used and the results:

• The following statement evaluates to true.

  <matches value="True" pattern="true"/>

• The following statement evaluates to true.

  <matches value="True" pattern="t*"/>

• The following statement evaluates to false.

  <matches value="blue" pattern="*u"/>

• The following statement evaluates to true.

  <matches value="True" pattern="t?ue"/>

• The following statement evaluates to false.

  <matches value="Tue" pattern="t?ue"/>

• The following statement evaluates to false.

  <matches value="True" pattern="t*" exact="true"/>

• The following statement evaluates to true if var1 matches the pattern of var2.

  <matches value=":[var1]" pattern=":[var2]"/>