Match

This conditional tag can be used where you would use any of the other conditional tags such as eq, neq, etc. The only difference is that this tag allows you validate that a given property respects a specified regular expression. The regular expression syntax can be found at Java Regular Expression.

source

The value to validate that respects the specified regular expression.

expression

The regular expression to use when validating the source attribute.

Example #1

<if>
   <match expression="[^@]+@.+" source="user@host" />
   <then>
      <log>Using user authentication method</log>
   </then>
</if>

Example #2

<if>
   <match expression="(h|H)(t|T)(p|P)(s|S)?:/{1,3}[^:]:+[^@]+@[^/]/.+" source="http://user:password@host/path" />
   <then>
      <log>Validated it looks like any http/https url</log>
   </then>
</if>

Example #3

<if>
   <match expression="http\:\/" partial="true" source="http://user:password@host/path" />
   <then>
      <log>Looks like an HTTP url</log>
   </then>
</if>