/* * Sone - Post.java - Copyright © 2010 David Roden * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ package net.pterodactylus.sone.data; import java.util.Comparator; import java.util.UUID; import net.pterodactylus.util.filter.Filter; /** * A post is a short message that a user writes in his Sone to let other users * know what is going on. * * @author David ‘Bombe’ Roden */ public class Post { /** Comparator for posts, sorts descending by time. */ public static final Comparator TIME_COMPARATOR = new Comparator() { @Override public int compare(Post leftPost, Post rightPost) { return (int) Math.max(Integer.MIN_VALUE, Math.min(Integer.MAX_VALUE, rightPost.getTime() - leftPost.getTime())); } }; /** Filter for posts with timestamps from the future. */ public static final Filter FUTURE_POSTS_FILTER = new Filter() { @Override public boolean filterObject(Post post) { return post.getTime() <= System.currentTimeMillis(); } }; /** The GUID of the post. */ private final UUID id; /** The Sone this post belongs to. */ private volatile Sone sone; /** The Sone of the recipient. */ private volatile Sone recipient; /** The time of the post (in milliseconds since Jan 1, 1970 UTC). */ private volatile long time; /** The text of the post. */ private volatile String text; /** Whether the post is known. */ private volatile boolean known; /** * Creates a new post. * * @param id * The ID of the post */ public Post(String id) { this(id, null, 0, null); } /** * Creates a new post. * * @param sone * The Sone this post belongs to * @param text * The text of the post */ public Post(Sone sone, String text) { this(sone, System.currentTimeMillis(), text); } /** * Creates a new post. * * @param sone * The Sone this post belongs to * @param time * The time of the post (in milliseconds since Jan 1, 1970 UTC) * @param text * The text of the post */ public Post(Sone sone, long time, String text) { this(UUID.randomUUID().toString(), sone, time, text); } /** * Creates a new post. * * @param id * The ID of the post * @param sone * The Sone this post belongs to * @param time * The time of the post (in milliseconds since Jan 1, 1970 UTC) * @param text * The text of the post */ public Post(String id, Sone sone, long time, String text) { this.id = UUID.fromString(id); this.sone = sone; this.time = time; this.text = text; } // // ACCESSORS // /** * Returns the ID of the post. * * @return The ID of the post */ public String getId() { return id.toString(); } /** * Returns the Sone this post belongs to. * * @return The Sone of this post */ public Sone getSone() { return sone; } /** * Sets the Sone of this post. * * @param sone * The Sone of this post * @return This post (for method chaining) */ public Post setSone(Sone sone) { this.sone = sone; return this; } /** * Returns the recipient of this post, if any. * * @return The recipient of this post, or {@code null} */ public Sone getRecipient() { return recipient; } /** * Sets the recipient of this post. * * @param recipient * The recipient of this post, or {@code null} * @return This post (for method chaining) */ public Post setRecipient(Sone recipient) { if (!sone.equals(recipient)) { this.recipient = recipient; } return this; } /** * Returns the time of the post. * * @return The time of the post (in milliseconds since Jan 1, 1970 UTC) */ public long getTime() { return time; } /** * Sets the time of this post. * * @param time * The time of this post (in milliseconds since Jan 1, 1970 UTC) * @return This post (for method chaining) */ public Post setTime(long time) { this.time = time; return this; } /** * Returns the text of the post. * * @return The text of the post */ public String getText() { return text; } /** * Sets the text of this post. * * @param text * The text of this post * @return This post (for method chaining) */ public Post setText(String text) { this.text = text; return this; } /** * Returns whether this post is known. * * @return {@code true} if this post is known, {@code false} otherwise */ public boolean isKnown() { return known; } /** * Sets whether this post is known. * * @param known * {@code true} if this post is known, {@code false} otherwise * @return This post */ public Post setKnown(boolean known) { this.known = known; return this; } // // OBJECT METHODS // /** * {@inheritDoc} */ @Override public int hashCode() { return id.hashCode(); } /** * {@inheritDoc} */ @Override public boolean equals(Object object) { if (!(object instanceof Post)) { return false; } Post post = (Post) object; return post.id.equals(id); } /** * {@inheritDoc} */ @Override public String toString() { return getClass().getName() + "[id=" + id + ",sone=" + sone + ",time=" + time + ",text=" + text + "]"; } }