132 lines
3.5 KiB
Java
132 lines
3.5 KiB
Java
package envoy.server.data;
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import java.time.Instant;
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import java.util.*;
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import javax.persistence.*;
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/**
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* This class acts as a superclass for all contacts, being {@link User}s and
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* {@link Group}s.
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*
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* @author Maximilian Käfer
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* @since Envoy Server Standalone v0.1-alpha
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*/
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@Entity
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@Table(name = "contacts", uniqueConstraints = { @UniqueConstraint(columnNames = { "name" }) })
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@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
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public abstract class Contact {
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@Id
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@GeneratedValue
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protected long id;
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protected String name;
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@Column(name = "creation_date")
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private Instant creationDate;
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@ManyToMany(fetch = FetchType.EAGER)
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protected Set<Contact> contacts;
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/**
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* @return a {@link envoy.data.Contact} object of this envoy.server.data.Contact
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* object.
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* @since Envoy Server Standalone v0.1-beta
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*/
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public abstract envoy.data.Contact toCommon();
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/**
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* Transforms this contact into a {@link envoy.data.Contact} where the contacts
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* set of contacts is empty.
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*
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* @return a {@link envoy.data.Contact} object of this contact
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* object.
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* @since Envoy Server Standalone v0.1-beta
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*/
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protected abstract envoy.data.Contact toFlatCommon();
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/**
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* @return the ID of this contact.
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* @since Envoy Server Standalone v0.1-beta
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*/
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public long getID() { return id; }
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/**
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* Sets the ID of this contact.
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*
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* @param id to set for this contact
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* @since Envoy Server Standalone v0.1-beta
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*/
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public void setID(long id) { this.id = id; }
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/**
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* @return the name of this contact.
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* @since Envoy Server Standalone v0.1-beta
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*/
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public String getName() { return name; }
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/**
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* Sets the name of this contact.
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*
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* @param name to set for this contact
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* @since Envoy Server Standalone v0.1-beta
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*/
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public void setName(String name) { this.name = name; }
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/**
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* @return the contacts
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* @since Envoy Server Standalone v0.1-beta
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*/
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public Set<Contact> getContacts() { return contacts; }
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/**
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* @param contacts the contacts to set
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* @since Envoy Server Standalone v0.1-beta
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*/
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public void setContacts(Set<Contact> contacts) { this.contacts = contacts; }
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/**
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* @return the creationDate
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* @since Envoy Server Standalone v0.2-beta
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*/
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public Instant getCreationDate() { return creationDate; }
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/**
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* @param creationDate the creationDate to set
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* @since Envoy Server Standalone v0.2-beta
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*/
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public void setCreationDate(Instant creationDate) { this.creationDate = creationDate; }
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/**
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* Shortcut to convert a {@code Contact} into a {@code User}.
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*
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* @param contact the contact to convert
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* @return the casted contact
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* @throws IllegalStateException if the given contact is not a User
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* @since Envoy Server v0.3-beta
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*/
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public static User toUser(Contact contact) {
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if (!(contact instanceof User)) throw new IllegalStateException("Cannot cast a non user to a user");
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return (User) contact;
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}
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/**
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* Shortcut to convert a set of {@code Contact}s into a set of {@code User}s.
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*
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* @param contacts the contacts to convert
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* @return the casted contacts
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* @throws IllegalStateException if one of the given contacts is not a User
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* @since Envoy Server v0.3-beta
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*/
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public static Set<User> toUser(Set<Contact> contacts) {
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final var newSet = new HashSet<User>();
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for (final var contact : contacts)
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newSet.add(toUser(contact));
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return newSet;
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}
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@Override
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public String toString() { return String.format("%s[id=%d,name=%s,%d contact(s)]", getClass().getSimpleName(), id, name, contacts.size()); }
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}
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