Remove a homemade implementation of Pair

Since apache-commons is already implementing a Pair
type, there is no need to reinvent the wheel.

airsonic-main/src/main/java/org/airsonic/player/controller/HLSController.java

@@ -25,9 +25,9 @@ import org.airsonic.player.service.JWTSecurityService;
 import org.airsonic.player.service.MediaFileService;
 import org.airsonic.player.service.PlayerService;
 import org.airsonic.player.service.SecurityService;
-import org.airsonic.player.util.Pair;
 import org.airsonic.player.util.StringUtil;
 import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.tuple.Pair;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.ServletRequestUtils;
@@ -128,11 +128,11 @@ public class HLSController {
         }
         int kbps = Integer.parseInt(matcher.group(1));
         if (matcher.group(3) == null) {
-            return new Pair<Integer, Dimension>(kbps, null);
+            return Pair.of(kbps, null);
         } else {
             int width = Integer.parseInt(matcher.group(3));
             int height = Integer.parseInt(matcher.group(4));
-            return new Pair<Integer, Dimension>(kbps, new Dimension(width, height));
+            return Pair.of(kbps, new Dimension(width, height));
         }
     }
 
@@ -143,7 +143,7 @@ public class HLSController {
 
         String contextPath = getContextPath(request);
         for (Pair<Integer, Dimension> bitRate : bitRates) {
-            Integer kbps = bitRate.getFirst();
+            Integer kbps = bitRate.getLeft();
             writer.println("#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=" + kbps * 1000L);
             UriComponentsBuilder url = (UriComponentsBuilder.fromUriString(contextPath + "ext/hls/hls.m3u8")
                     .queryParam("id", id)
@@ -151,7 +151,7 @@ public class HLSController {
                     .queryParam("bitRate", kbps));
             jwtSecurityService.addJWTToken(url);
             writer.print(url.toUriString());
-            Dimension dimension = bitRate.getSecond();
+            Dimension dimension = bitRate.getRight();
             if (dimension != null) {
                 writer.print("@" + dimension.width + "x" + dimension.height);
             }
@@ -188,8 +188,8 @@ public class HLSController {
         builder.queryParam("player", player.getId());
         builder.queryParam("duration", duration);
         if (bitRate != null) {
-            builder.queryParam("maxBitRate", bitRate.getFirst());
+            builder.queryParam("maxBitRate", bitRate.getLeft());
-            Dimension dimension = bitRate.getSecond();
+            Dimension dimension = bitRate.getRight();
             if (dimension != null) {
                 builder.queryParam("size", dimension.width);
                 builder.queryParam("x", dimension.height);

airsonic-main/src/main/java/org/airsonic/player/service/PlaylistService.java

@@ -31,9 +31,9 @@ import org.airsonic.player.domain.User;
 import org.airsonic.player.service.playlist.PlaylistExportHandler;
 import org.airsonic.player.service.playlist.PlaylistImportHandler;
 import org.airsonic.player.util.FileUtil;
-import org.airsonic.player.util.Pair;
 import org.airsonic.player.util.StringUtil;
 import org.apache.commons.io.FilenameUtils;
+import org.apache.commons.lang3.tuple.Pair;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -192,11 +192,11 @@ public class PlaylistService {
 
         Pair<List<MediaFile>, List<String>> result = importHandler.handle(inputSpecificPlaylist);
 
-        if (result.getFirst().isEmpty() && !result.getSecond().isEmpty()) {
+        if (result.getLeft().isEmpty() && !result.getRight().isEmpty()) {
             throw new Exception("No songs in the playlist were found.");
         }
 
-        for (String error : result.getSecond()) {
+        for (String error : result.getRight()) {
             LOG.warn("File in playlist '" + fileName + "' not found: " + error);
         }
         Date now = new Date();
@@ -215,7 +215,7 @@ public class PlaylistService {
             playlist = existingPlaylist;
         }
 
-        setFilesInPlaylist(playlist.getId(), result.getFirst());
+        setFilesInPlaylist(playlist.getId(), result.getLeft());
 
         return playlist;
     }

airsonic-main/src/main/java/org/airsonic/player/service/playlist/DefaultPlaylistImportHandler.java

@@ -3,7 +3,7 @@ package org.airsonic.player.service.playlist;
 import chameleon.playlist.*;
 import org.airsonic.player.domain.MediaFile;
 import org.airsonic.player.service.MediaFileService;
-import org.airsonic.player.util.Pair;
+import org.apache.commons.lang3.tuple.Pair;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.Ordered;
 import org.springframework.stereotype.Component;
@@ -87,7 +87,7 @@ public class DefaultPlaylistImportHandler implements PlaylistImportHandler {
             errors.add(e.getMessage());
         }
 
-        return Pair.create(mediaFiles, errors);
+        return Pair.of(mediaFiles, errors);
     }
 
     @Override

airsonic-main/src/main/java/org/airsonic/player/service/playlist/PlaylistImportHandler.java

@@ -2,7 +2,7 @@ package org.airsonic.player.service.playlist;
 
 import chameleon.playlist.SpecificPlaylist;
 import org.airsonic.player.domain.MediaFile;
-import org.airsonic.player.util.Pair;
+import org.apache.commons.lang3.tuple.Pair;
 import org.springframework.core.Ordered;
 
 import java.util.List;

airsonic-main/src/main/java/org/airsonic/player/service/playlist/XspfPlaylistImportHandler.java

@@ -6,7 +6,7 @@ import chameleon.playlist.xspf.Playlist;
 import chameleon.playlist.xspf.StringContainer;
 import org.airsonic.player.domain.MediaFile;
 import org.airsonic.player.service.MediaFileService;
-import org.airsonic.player.util.Pair;
+import org.apache.commons.lang3.tuple.Pair;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -60,7 +60,7 @@ public class XspfPlaylistImportHandler implements PlaylistImportHandler {
                 errors.add(errorMsg);
             }
         });
-        return Pair.create(mediaFiles, errors);
+        return Pair.of(mediaFiles, errors);
     }
 
     @Override

airsonic-main/src/main/java/org/airsonic/player/service/sonos/SonosServiceRegistration.java

@@ -19,8 +19,8 @@
 
 package org.airsonic.player.service.sonos;
 
-import org.airsonic.player.util.Pair;
 import org.airsonic.player.util.StringUtil;
+import org.apache.commons.lang3.tuple.Pair;
 import org.apache.http.NameValuePair;
 import org.apache.http.client.ResponseHandler;
 import org.apache.http.client.config.RequestConfig;
@@ -54,23 +54,23 @@ public class SonosServiceRegistration {
                  ", SID " + sonosServiceId + ", and Airsonic URL " + localUrl);
 
         List<Pair<String, String>> params = new ArrayList<Pair<String, String>>();
-        params.add(Pair.create("sid", String.valueOf(sonosServiceId)));
+        params.add(Pair.of("sid", String.valueOf(sonosServiceId)));
         if (enabled) {
-            params.add(Pair.create("name", sonosServiceName));
+            params.add(Pair.of("name", sonosServiceName));
-            params.add(Pair.create("uri", localUrl));
+            params.add(Pair.of("uri", localUrl));
-            params.add(Pair.create("secureUri", localUrl));
+            params.add(Pair.of("secureUri", localUrl));
-            params.add(Pair.create("pollInterval", "1200"));
+            params.add(Pair.of("pollInterval", "1200"));
-            params.add(Pair.create("authType", "UserId"));
+            params.add(Pair.of("authType", "UserId"));
-            params.add(Pair.create("containerType", "MService"));
+            params.add(Pair.of("containerType", "MService"));
-            params.add(Pair.create("caps", "search"));
+            params.add(Pair.of("caps", "search"));
-            params.add(Pair.create("caps", "trFavorites"));
+            params.add(Pair.of("caps", "trFavorites"));
-            params.add(Pair.create("caps", "alFavorites"));
+            params.add(Pair.of("caps", "alFavorites"));
-            params.add(Pair.create("caps", "ucPlaylists"));
+            params.add(Pair.of("caps", "ucPlaylists"));
-            params.add(Pair.create("caps", "extendedMD"));
+            params.add(Pair.of("caps", "extendedMD"));
-            params.add(Pair.create("presentationMapVersion", "1"));
+            params.add(Pair.of("presentationMapVersion", "1"));
-            params.add(Pair.create("presentationMapUri", airsonicBaseUrl + "sonos/presentationMap.xml"));
+            params.add(Pair.of("presentationMapUri", airsonicBaseUrl + "sonos/presentationMap.xml"));
-            params.add(Pair.create("stringsVersion", "5"));
+            params.add(Pair.of("stringsVersion", "5"));
-            params.add(Pair.create("stringsUri", airsonicBaseUrl + "sonos/strings.xml"));
+            params.add(Pair.of("stringsUri", airsonicBaseUrl + "sonos/strings.xml"));
         }
 
         String result = execute(controllerUrl, params);
@@ -80,7 +80,7 @@ public class SonosServiceRegistration {
     private String execute(String url, List<Pair<String, String>> parameters) throws IOException {
         List<NameValuePair> params = new ArrayList<NameValuePair>();
         for (Pair<String, String> parameter : parameters) {
-            params.add(new BasicNameValuePair(parameter.getFirst(), parameter.getSecond()));
+            params.add(new BasicNameValuePair(parameter.getLeft(), parameter.getRight()));
         }
         RequestConfig requestConfig = RequestConfig.custom()
                 .setConnectTimeout(20 * 1000) // 20 seconds

airsonic-main/src/main/java/org/airsonic/player/util/Pair.java

@@ -1,69 +0,0 @@
-/*
- This file is part of Airsonic.
-
- Airsonic 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.
-
- Airsonic 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 Airsonic.  If not, see <http://www.gnu.org/licenses/>.
-
- Copyright 2016 (C) Airsonic Authors
- Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
- */
-package org.airsonic.player.util;
-
-import org.apache.commons.lang.ObjectUtils;
-
-import java.io.Serializable;
-
-/**
- * @author Sindre Mehus
- */
-public class Pair<S, T> implements Serializable {
-
-    private final S first;
-    private final T second;
-
-    public static <S, T> Pair<S, T> create(S first, T second) {
-        return new Pair<S, T>(first, second);
-    }
-
-    public Pair(S first, T second) {
-        this.first = first;
-        this.second = second;
-    }
-
-    public S getFirst() {
-        return first;
-    }
-
-    public T getSecond() {
-        return second;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-
-        Pair pair = (Pair) o;
-
-        return ObjectUtils.equals(first, pair.first) && ObjectUtils.equals(second, pair.second);
-    }
-
-    @Override
-    public int hashCode() {
-        return ObjectUtils.hashCode(first) * ObjectUtils.hashCode(second);
-    }
-}

airsonic-main/src/test/java/org/airsonic/player/controller/HLSControllerTestCase.java

@@ -20,7 +20,7 @@
 package org.airsonic.player.controller;
 
 import junit.framework.TestCase;
-import org.airsonic.player.util.Pair;
+import org.apache.commons.lang3.tuple.Pair;
 
 import java.awt.*;
 
@@ -34,13 +34,13 @@ public class HLSControllerTestCase extends TestCase {
         HLSController controller = new HLSController();
 
         Pair<Integer,Dimension> pair = controller.parseBitRate("1000");
-        assertEquals(1000, pair.getFirst().intValue());
+        assertEquals(1000, pair.getLeft().intValue());
-        assertNull(pair.getSecond());
+        assertNull(pair.getRight());
 
         pair = controller.parseBitRate("1000@400x300");
-        assertEquals(1000, pair.getFirst().intValue());
+        assertEquals(1000, pair.getLeft().intValue());
-        assertEquals(400, pair.getSecond().width);
+        assertEquals(400, pair.getRight().width);
-        assertEquals(300, pair.getSecond().height);
+        assertEquals(300, pair.getRight().height);
 
         try {
             controller.parseBitRate("asdfl");