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package org.glassfish.jersey.examples.beanvalidation.webapp.service;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import org.glassfish.jersey.examples.beanvalidation.webapp.domain.ContactCard;
/**
* Simple storage of contacts.
*
* @author Michal Gajdos
*/
public class StorageService {
private static final AtomicLong contactCounter = new AtomicLong(0);
private static final Map<Long, ContactCard> contacts = new HashMap<Long, ContactCard>();
/**
* Adds a contact into the storage. If a contact with given data already exist {@code null} value is returned.
*
* @param contact contact to be added.
* @return contact with pre-filled {@code id} field, {@code null} if the contact already exist in the storage.
*/
public static ContactCard addContact(final ContactCard contact) {
if (contacts.containsValue(contact)) {
return null;
}
contact.setId(contactCounter.incrementAndGet());
contacts.put(contact.getId(), contact);
return contact;
}
/**
* Removes all contacts from the storage.
*
* @return list of all removed contacts.
*/
public static List<ContactCard> clear() {
final Collection<ContactCard> values = contacts.values();
contacts.clear();
return new ArrayList<ContactCard>(values);
}
/**
* Removes contact with given {@code id}.
*
* @param id id of the contact to be removed.
* @return removed contact or {@code null} if the contact is not present in the storage.
*/
public static ContactCard remove(final Long id) {
return contacts.remove(id);
}
/**
* Retrieves contact with given {@code id}.
*
* @param id id of the contact to be retrieved.
* @return contact or {@code null} if the contact is not present in the storage.
*/
public static ContactCard get(final Long id) {
return contacts.get(id);
}
/**
* Finds contacts whose email contains {@code emailPart} as a substring.
*
* @param emailPart search phrase.
* @return list of matched contacts or an empty list.
*/
public static List<ContactCard> findByEmail(final String emailPart) {
final List<ContactCard> results = new ArrayList<ContactCard>();
for (final ContactCard contactCard : contacts.values()) {
final String email = contactCard.getEmail();
if (email != null && email.contains(emailPart)) {
results.add(contactCard);
}
}
return results;
}
/**
* Finds contacts whose name contains {@code namePart} as a substring.
*
* @param namePart search phrase.
* @return list of matched contacts or an empty list.
*/
public static List<ContactCard> findByName(final String namePart) {
final List<ContactCard> results = new ArrayList<ContactCard>();
for (final ContactCard contactCard : contacts.values()) {
if (contactCard.getFullName().contains(namePart)) {
results.add(contactCard);
}
}
return results;
}
/**
* Finds contacts whose phone contains {@code phonePart} as a substring.
*
* @param phonePart search phrase.
* @return list of matched contacts or an empty list.
*/
public static List<ContactCard> findByPhone(final String phonePart) {
final List<ContactCard> results = new ArrayList<ContactCard>();
for (final ContactCard contactCard : contacts.values()) {
final String phone = contactCard.getPhone();
if (phone != null && phone.contains(phonePart)) {
results.add(contactCard);
}
}
return results;
}
}