private void validateCodeAttributeValue(CodeAttribute attribute, ValidationResults results) {
CodeParentValidator parentValidator = new CodeParentValidator();
ValidationResultFlag validParent = parentValidator.evaluate(attribute);
if (validParent == ValidationResultFlag.OK) {
CodeValidator codeValidator = new CodeValidator();
ValidationResultFlag result = codeValidator.evaluate(attribute);
results.addResult(codeValidator, result);
} else {
results.addResult(parentValidator, ValidationResultFlag.WARNING);
}
}
/**
* Convert an ISBN-10 code to an ISBN-13 code.
*
* <p>This method requires a valid ISBN-10 with NO formatting characters.
*
* @param isbn10 The ISBN-10 code to convert
* @return A converted ISBN-13 code or <code>null</code> if the ISBN-10 code is not valid
*/
public String convertToISBN13(String isbn10) {
if (isbn10 == null) {
return null;
}
String input = isbn10.trim();
if (input.length() != 10) {
throw new IllegalArgumentException(
"Invalid length " + input.length() + " for '" + input + "'");
}
// Calculate the new ISBN-13 code
String isbn13 = "978" + input.substring(0, 9);
try {
String checkDigit = isbn13Validator.getCheckDigit().calculate(isbn13);
isbn13 += checkDigit;
return isbn13;
} catch (CheckDigitException e) {
throw new IllegalArgumentException(
"Check digit error for '" + input + "' - " + e.getMessage());
}
}
/**
* Check the code is a valid ISBN-13 code.
*
* <p>If valid, this method returns the ISBN-13 code with formatting characters removed (i.e.
* space or hyphen).
*
* @param code The code to validate.
* @return A valid ISBN-13 code if valid, otherwise <code>null</code>.
*/
public String validateISBN13(String code) {
Object result = isbn13Validator.validate(code);
return (result == null ? null : result.toString());
}
/**
* Check the code is a valid ISBN-13 code.
*
* @param code The code to validate.
* @return <code>true</code> if a valid ISBN-13 code, otherwise <code>false</code>.
*/
public boolean isValidISBN13(String code) {
return isbn13Validator.isValid(code);
}
