com.vaadin.flow.data.validator

Class RegexpValidator

java.lang.Object

com.vaadin.flow.data.validator.AbstractValidator<String>

com.vaadin.flow.data.validator.RegexpValidator

All Implemented Interfaces:

Validator<String>, Serializable, BiFunction<String,ValueContext,ValidationResult>

Direct Known Subclasses:

EmailValidator

public class RegexpValidator
extends AbstractValidator<String>

A string validator comparing the string against a Java regular expression. Both complete matches and substring matches are supported.

For the Java regular expression syntax, see Pattern.

Since:

1.0.

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RegexpValidator(String errorMessage, String regexp) Creates a validator for checking that the regular expression matches the complete string to validate.
RegexpValidator(String errorMessage, String regexp, boolean complete) Creates a validator for checking that the regular expression matches the string to validate.

Method Summary

Modifier and Type	Method and Description
ValidationResult	apply(String value, ValueContext context) Validates the given value.
protected boolean	isValid(String value) Returns whether the given string matches the regular expression.
String	toString()

Methods inherited from class com.vaadin.flow.data.validator.AbstractValidator

getMessage, toResult

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.vaadin.flow.data.binder.Validator

alwaysPass, from, from, from, from

Methods inherited from interface java.util.function.BiFunction

andThen

Constructor Detail

RegexpValidator

public RegexpValidator(String errorMessage,
                       String regexp)

Creates a validator for checking that the regular expression matches the complete string to validate.

Parameters:

errorMessage - the message to display in case the value does not validate.

regexp - a Java regular expression

RegexpValidator

public RegexpValidator(String errorMessage,
                       String regexp,
                       boolean complete)

Creates a validator for checking that the regular expression matches the string to validate.

Parameters:

errorMessage - the message to display in case the value does not validate.

regexp - a Java regular expression

complete - true to use check for a complete match, false to look for a matching substring

Method Detail

apply

public ValidationResult apply(String value,
                              ValueContext context)

Description copied from interface: Validator

Validates the given value. Returns a ValidationResult instance representing the outcome of the validation.

Parameters:

value - the input value to validate

context - the value context for validation

Returns:

the validation result

toString

public String toString()

Overrides:

toString in class Object

isValid

protected boolean isValid(String value)

Returns whether the given string matches the regular expression.

Parameters:

value - the string to match

Returns:

true if the string matched, false otherwise