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## org.codehaus.groovy.grails.validation.routines
[Java] Class RegexValidator

    java.lang.Object
      org.codehaus.groovy.grails.validation.routines.RegexValidator

All Implemented Interfaces:
  java.io.Serializable

    public class RegexValidator
    extends java.lang.Object

Regular Expression validation (using JDK 1.4+ regex support).

Construct the validator either for a single regular expression or a set (array) of regular expressions. By default validation is case sensitive but constructors are provided to allow case in-sensitive validation. For example to create a validator which does case in-sensitive validation for a set of regular expressions:

             String[] regexs = new String[] {...};
             RegexValidator validator = new RegexValidator(regexs, false);

- Validate `true` or `false`:

- `boolean valid = validator.isValid(value);`

- Validate returning an aggregated String of the matched groups:

- `String result = validator.validate(value);`

- Validate returning the matched groups:

- `String[] result = validator.match(value);`

Cached instances pre-compile and re-use java.util.regex.Pattern(s) - which according to the java.util.regex.Pattern API are safe to use in a multi-threaded environment.

Since:
  Validator 1.4

Constructor Summary
`RegexValidator(java.lang.String regex)` Construct a case sensitive validator for a single regular expression.
`RegexValidator(java.lang.String regex, boolean caseSensitive)` Construct a validator for a single regular expression with the specified case sensitivity.
`RegexValidator(java.lang.String[] regexs)` Construct a case sensitive validator that matches any one of the set of regular expressions.
`RegexValidator(java.lang.String[] regexs, boolean caseSensitive)` Construct a validator that matches any one of the set of regular expressions with the specified case sensitivity.

Method Summary
`boolean` | `isValid(java.lang.String value)` Validate a value against the set of regular expressions.
`java.lang.String[]` | `match(java.lang.String value)` Validate a value against the set of regular expressions returning the array of matched groups.
`java.lang.String` | `toString()` Provide a String representation of this validator.
`java.lang.String` | `validate(java.lang.String value)` Validate a value against the set of regular expressions returning a String value of the aggregated groups.

Methods inherited from class java.lang.Object
java.lang.Object#wait(), java.lang.Object#wait(long), java.lang.Object#wait(long, int), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()

Constructor Detail

### RegexValidator

    public RegexValidator(java.lang.String regex)

  Construct a case sensitive validator for a single regular expression.
  Parameters:
    `regex` - The regular expression this validator will validate against

### RegexValidator

    public RegexValidator(java.lang.String regex, boolean caseSensitive)

  Construct a validator for a single regular expression with the specified case sensitivity.
  Parameters:
    `regex` - The regular expression this validator will validate against
    `caseSensitive` - when `true` matching is case sensitive, otherwise matching is case in-sensitive

### RegexValidator

    public RegexValidator(java.lang.String[] regexs)

  Construct a case sensitive validator that matches any one of the set of regular expressions.
  Parameters:
    `regexs` - The set of regular expressions this validator will validate against

### RegexValidator

    public RegexValidator(java.lang.String[] regexs, boolean caseSensitive)

  Construct a validator that matches any one of the set of regular expressions with the specified case sensitivity.
  Parameters:
    `regexs` - The set of regular expressions this validator will validate against
    `caseSensitive` - when `true` matching is case sensitive, otherwise matching is case in-sensitive

Method Detail

### isValid

    public boolean isValid(java.lang.String value)

  Validate a value against the set of regular expressions.
  Parameters:
    `value` - The value to validate.
  Returns:
    `true` if the value is valid otherwise `false`.

### match

    public java.lang.String[] match(java.lang.String value)

  Validate a value against the set of regular expressions returning the array of matched groups.
  Parameters:
    `value` - The value to validate.
  Returns:
    String array of the groups matched if valid or `null` if invalid

### toString

    @Override
    public java.lang.String toString()

  Provide a String representation of this validator.
  Returns:
    A String representation of this validator

### validate

    public java.lang.String validate(java.lang.String value)

  Validate a value against the set of regular expressions returning a String value of the aggregated groups.
  Parameters:
    `value` - The value to validate.
  Returns:
    Aggregated String value comprised of the groups matched if valid or `null` if invalid

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