/**
* @param email The user entered email address that you want to check for suggestions with
* @return null, if no suggestions, or an EmailAddress object containing the suggestion
*/
public EmailAddress suggest(String email) {
EmailAddress emailParts = new EmailAddress(email);
if (!emailParts.isValid()) return null;
String closestDomain =
this.findClosestString(
emailParts.getDomain(),
configuration.getDomains(),
configuration.getDistanceAlgorithm(),
configuration.getThreshold());
if (closestDomain != null) {
// we have a suggestion
if (!emailParts.hasDomain(closestDomain)) {
// if we have a suggestion different to the actual domain, return it
return emailParts.emailAddressWithDifferentDomain(closestDomain);
}
} else {
// we don't have a suggestion, check tld
String closestTopLevelDomain =
this.findClosestString(
emailParts.getTLD(),
configuration.getTopLevelDomains(),
configuration.getDistanceAlgorithm(),
configuration.getThreshold());
if (emailParts.getDomain() != null
&& closestTopLevelDomain != null
&& !closestTopLevelDomain.equals(emailParts.getTLD())) {
// return suggestion based off tld
String domain = emailParts.getDomain();
closestDomain =
domain.substring(0, domain.lastIndexOf(emailParts.getTLD())) + closestTopLevelDomain;
return emailParts.emailAddressWithDifferentDomain(closestDomain);
}
}
// exact match, no match, or invalid email so no suggestion
return null;
}
