int validator
Description
Field Validator that checks if the integer specified is within a certain range.
Parameters
- fieldName- The field name this validator is validating. Required if using Plain-Validator Syntax otherwise not required
- min- the minimum value (if none is specified, it will not be checked)
- max- the maximum value (if none is specified, it will not be checked)
- parse- if set to true, minExpression and maxExpression will be evaluated to find min/max
- minExpression- expression to calculate the minimum value (if none is specified, it will not be checked)
- maxExpression- expression to calculate the maximum value (if none is specified, it will not be checked)
You can either use the min / max value or minExpression / maxExpression (when parse is set to true) - using 
expression can be slightly slower, see the example below.
Warning: do not use
${minExpression}and${maxExpression}as an expression as this will turn into infinitive loop!
Examples
<validators>
     <!-- Plain Validator Syntax -->
     <validator type="int">
         <param name="fieldName">age</param>
         <param name="min">20</param>
         <param name="max">50</param>
         <message>Age needs to be between ${min} and ${max}</message>
     </validator>
 
     <!-- Field Validator Syntax -->
     <field name="age">
         <field-validator type="int">
             <param name="min">20</param>
             <param name="max">50</param>
             <message>Age needs to be between ${min} and ${max}</message>
         </field-validator>
     </field>
 
     <!-- Field Validator Syntax with expression -->
     <field name="age">
         <field-validator type="int">
             <param name="minExpression">${minValue}</param> <!-- will be evaluated as: Integer getMinValue() -->
             <param name="maxExpression">${maxValue}</param> <!-- will be evaluated as: Integer getMaxValue() -->
             <message>Age needs to be between ${min} and ${max}</message>
         </field-validator>
     </field>
</validators>
