com.vaadin.data.validator.

Class StringLengthValidator

    • Constructor Detail

      • StringLengthValidator

        public StringLengthValidator(String errorMessage)

        Creates a new StringLengthValidator with a given error message.

        Parameters:

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

      • StringLengthValidator

        public StringLengthValidator(String errorMessage,
                             Integer minLength,
                             Integer maxLength,
                             boolean allowNull)

        Creates a new StringLengthValidator with a given error message and minimum and maximum length limits.

        Parameters:

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

        minLength - the minimum permissible length of the string or null for no limit. A negative value for no limit is also supported for backwards compatibility.

        maxLength - the maximum permissible length of the string or null for no limit. A negative value for no limit is also supported for backwards compatibility.

        allowNull - Are null strings permissible? This can be handled better by setting a field as required or not.

    • Method Detail

      • isValidValue

        protected boolean isValidValue(String value)

        Checks if the given value is valid.

        Specified by:

        isValidValue in class AbstractValidator<String>

        Parameters:

        value - the value to validate.

        Returns:

        true for valid value, otherwise false.

      • isNullAllowed

        @Deprecated
public final boolean isNullAllowed()

        Deprecated. 

        Returns true if null strings are allowed.

        Returns:

        true if allows null string, otherwise false.

      • getMaxLength

        public Integer getMaxLength()

        Gets the maximum permissible length of the string.

        Returns:

        the maximum length of the string or null if there is no limit

      • getMinLength

        public Integer getMinLength()

        Gets the minimum permissible length of the string.

        Returns:

        the minimum length of the string or null if there is no limit

      • setNullAllowed

        @Deprecated
public void setNullAllowed(boolean allowNull)

        Deprecated. 

        Sets whether null-strings are to be allowed. This can be better handled by setting a field as required or not.

      • setMaxLength

        public void setMaxLength(Integer maxLength)

        Sets the maximum permissible length of the string.

        Parameters:

        maxLength - the maximum length to accept or null for no limit

      • setMinLength

        public void setMinLength(Integer minLength)

        Sets the minimum permissible length.

        Parameters:

        minLength - the minimum length to accept or null for no limit