Package org.apache.commons.validator.routines

Class ISBNValidator

java.lang.Object

org.apache.commons.validator.routines.ISBNValidator

All Implemented Interfaces:

java.io.Serializable

public class ISBNValidator
extends java.lang.Object
implements java.io.Serializable

ISBN-10 and ISBN-13 Code Validation.

This validator validates the code is either a valid ISBN-10 (using a CodeValidator with the ISBN10CheckDigit) or a valid ISBN-13 code (using a CodeValidator with the EAN13CheckDigit routine).

The validate() methods return the ISBN code with formatting characters removed if valid or null if invalid.

This validator also provides the facility to convert ISBN-10 codes to ISBN-13 if the convert property is true.

From 1st January 2007 the book industry will start to use a new 13 digit ISBN number (rather than this 10 digit ISBN number). ISBN-13 codes are EAN codes, for more information see:

• Wikipedia - International Standard Book Number (ISBN).
• EAN - see Wikipedia - European Article Number.
• ISBN-13 Transition details.

ISBN-13s are either prefixed with 978 or 979. 978 prefixes are only assigned to the ISBN agency. 979 prefixes may be assigned to ISBNs or ISMNs (International Standard Music Numbers).

• 979-0 are assigned to the ISMN agency
• 979-10, 979-11, 979-12 are assigned to the ISBN agency

All other 979 prefixed EAN-13 numbers have not yet been assigned to an agency. The validator validates all 13-digit codes with 978 or 979 prefixes.

Since:

1.4

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
ISBNValidator()	Constructs an ISBN validator which converts ISBN-10 codes to ISBN-13.
ISBNValidator(boolean convert)	Constructs an ISBN validator indicating whether ISBN-10 codes should be converted to ISBN-13.

Method Summary

Modifier and Type	Method	Description
java.lang.String	convertToISBN13(java.lang.String isbn10)	Convert an ISBN-10 code to an ISBN-13 code.
static ISBNValidator	getInstance()	Gets the singleton instance of the ISBN validator which converts ISBN-10 codes to ISBN-13.
static ISBNValidator	getInstance(boolean convert)	Gets the singleton instance of the ISBN validator specifying whether ISBN-10 codes should be converted to ISBN-13.
boolean	isValid(java.lang.String code)	Check the code is either a valid ISBN-10 or ISBN-13 code.
boolean	isValidISBN10(java.lang.String code)	Check the code is a valid ISBN-10 code.
boolean	isValidISBN13(java.lang.String code)	Check the code is a valid ISBN-13 code.
java.lang.String	validate(java.lang.String code)	Check the code is either a valid ISBN-10 or ISBN-13 code.
java.lang.String	validateISBN10(java.lang.String code)	Check the code is a valid ISBN-10 code.
java.lang.String	validateISBN13(java.lang.String code)	Check the code is a valid ISBN-13 code.

Methods inherited from class java.lang.Object

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

Constructor Detail

ISBNValidator

public ISBNValidator()

Constructs an ISBN validator which converts ISBN-10 codes to ISBN-13.

ISBNValidator

public ISBNValidator(boolean convert)

Constructs an ISBN validator indicating whether ISBN-10 codes should be converted to ISBN-13.

Parameters:

convert - true if valid ISBN-10 codes should be converted to ISBN-13 codes or false if valid ISBN-10 codes should be returned unchanged.

Method Detail

getInstance

public static ISBNValidator getInstance()

Gets the singleton instance of the ISBN validator which converts ISBN-10 codes to ISBN-13.

Returns:

A singleton instance of the ISBN validator.

getInstance

public static ISBNValidator getInstance(boolean convert)

Gets the singleton instance of the ISBN validator specifying whether ISBN-10 codes should be converted to ISBN-13.

Parameters:

convert - true if valid ISBN-10 codes should be converted to ISBN-13 codes or false if valid ISBN-10 codes should be returned unchanged.

Returns:

A singleton instance of the ISBN validator.

convertToISBN13

public java.lang.String convertToISBN13(java.lang.String isbn10)

Convert an ISBN-10 code to an ISBN-13 code.

This method requires a valid ISBN-10 with NO formatting characters.

Parameters:

isbn10 - The ISBN-10 code to convert

Returns:

A converted ISBN-13 code or null if the ISBN-10 code is not valid

isValid

public boolean isValid(java.lang.String code)

Check the code is either a valid ISBN-10 or ISBN-13 code.

Parameters:

code - The code to validate.

Returns:

true if a valid ISBN-10 or ISBN-13 code, otherwise false.

isValidISBN10

public boolean isValidISBN10(java.lang.String code)

Check the code is a valid ISBN-10 code.

Parameters:

code - The code to validate.

Returns:

true if a valid ISBN-10 code, otherwise false.

isValidISBN13

public boolean isValidISBN13(java.lang.String code)

Check the code is a valid ISBN-13 code.

Parameters:

code - The code to validate.

Returns:

true if a valid ISBN-13 code, otherwise false.

validate

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

Check the code is either a valid ISBN-10 or ISBN-13 code.

If valid, this method returns the ISBN code with formatting characters removed (such as space or hyphen).

Converts an ISBN-10 codes to ISBN-13 if convertToISBN13 is true.

Parameters:

code - The code to validate.

Returns:

A valid ISBN code if valid, otherwise null.

validateISBN10

public java.lang.String validateISBN10(java.lang.String code)

Check the code is a valid ISBN-10 code.

If valid, this method returns the ISBN-10 code with formatting characters removed (such as space or hyphen).

Parameters:

code - The code to validate.

Returns:

A valid ISBN-10 code if valid, otherwise null.

validateISBN13

public java.lang.String validateISBN13(java.lang.String code)

Check the code is a valid ISBN-13 code.

If valid, this method returns the ISBN-13 code with formatting characters removed (such as space or hyphen).

Parameters:

code - The code to validate.

Returns:

A valid ISBN-13 code if valid, otherwise null.