vertx / io.vertx.rxjava.ext.web.api.validation / ParameterTypeValidator / createStringTypeValidator

# createStringTypeValidator

`open static fun createStringTypeValidator(defaultValue: Any): ParameterTypeValidator`

Create a new string type validator

### Parameters

`defaultValue` - Default value that will be set if parameter is empty or not found. To apply default value you have to set `io.vertx.rxjava.ext.web.api.validation.ParameterValidationRule#allowEmptyValue` true. It can be null

Return

`open static fun createStringTypeValidator(pattern: String, defaultValue: Any): ParameterTypeValidator`

Create a new string type validator

### Parameters

`pattern` - pattern that string have to match. It can be null

`defaultValue` - Default value that will be set if parameter is empty or not found. To apply default value you have to set `io.vertx.rxjava.ext.web.api.validation.ParameterValidationRule#allowEmptyValue` true. It can be null

Return

`open static fun createStringTypeValidator(pattern: String, minLength: Int, maxLength: Int, defaultValue: Any): ParameterTypeValidator`

Create a new string type validator

### Parameters

`pattern` - pattern that string have to match. It can be null

`minLength` - Minimum length of string. It can be null

`maxLength` - Maximum length of string. It can be null

`defaultValue` - Default value that will be set if parameter is empty or not found. To apply default value you have to set `io.vertx.rxjava.ext.web.api.validation.ParameterValidationRule#allowEmptyValue` true. It can be null

Return