Create helper and data class for wikivoyage search history
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Alex Sytnyk
parent
49c09054b4
commit
a7c5736e78
2 changed files with 235 additions and 0 deletions
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package net.osmand.plus.wikivoyage.data;
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import android.support.annotation.NonNull;
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import net.osmand.plus.OsmandApplication;
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import net.osmand.plus.api.SQLiteAPI.SQLiteConnection;
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import net.osmand.plus.api.SQLiteAPI.SQLiteCursor;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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import gnu.trove.map.hash.TLongObjectHashMap;
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public class WikivoyageSearchHistoryHelper {
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private static WikivoyageSearchHistoryHelper instance;
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private WikivoyageSearchHistoryDbHelper dbHelper;
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private TLongObjectHashMap<WikivoyageSearchHistoryItem> historyMap = new TLongObjectHashMap<>();
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private List<WikivoyageSearchHistoryItem> historyItems;
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private WikivoyageSearchHistoryHelper(OsmandApplication app) {
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dbHelper = new WikivoyageSearchHistoryDbHelper(app);
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loadHistory();
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}
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public static WikivoyageSearchHistoryHelper getInstance(OsmandApplication app) {
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if (instance == null) {
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instance = new WikivoyageSearchHistoryHelper(app);
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}
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return instance;
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}
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public List<WikivoyageSearchHistoryItem> getAllHistory() {
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return new ArrayList<>(historyItems);
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}
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public void addToHistory(long cityId, String title, String lang, String isPartOf) {
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WikivoyageSearchHistoryItem item = historyMap.get(cityId);
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boolean newItem = item == null;
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if (newItem) {
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item = new WikivoyageSearchHistoryItem();
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item.cityId = cityId;
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}
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item.articleTitle = title;
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item.lang = lang;
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item.isPartOf = isPartOf;
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item.lastAccessed = System.currentTimeMillis();
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if (newItem) {
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dbHelper.add(item);
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historyItems.add(item);
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} else {
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dbHelper.update(item);
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}
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sortHistory();
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}
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private void loadHistory() {
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historyItems = dbHelper.getAllHistory();
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sortHistory();
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for (WikivoyageSearchHistoryItem item : historyItems) {
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historyMap.put(item.cityId, item);
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}
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}
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private void sortHistory() {
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Collections.sort(historyItems, new Comparator<WikivoyageSearchHistoryItem>() {
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@Override
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public int compare(WikivoyageSearchHistoryItem item1, WikivoyageSearchHistoryItem item2) {
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if (item1.lastAccessed > item2.lastAccessed) {
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return -1;
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} else if (item1.lastAccessed == item2.lastAccessed) {
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return 0;
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}
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return 1;
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}
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});
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}
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private static class WikivoyageSearchHistoryDbHelper {
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private static final int DB_VERSION = 1;
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private static final String DB_NAME = "wikivoyage_search_history";
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private static final String HISTORY_TABLE_NAME = "history_recents";
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private static final String HISTORY_COL_CITY_ID = "city_id";
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private static final String HISTORY_COL_ARTICLE_TITLE = "article_title";
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private static final String HISTORY_COL_LANG = "lang";
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private static final String HISTORY_COL_IS_PART_OF = "is_part_of";
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private static final String HISTORY_COL_LAST_ACCESSED = "last_accessed";
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private static final String HISTORY_TABLE_CREATE = "CREATE TABLE IF NOT EXISTS " +
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HISTORY_TABLE_NAME + " (" +
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HISTORY_COL_CITY_ID + " long, " +
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HISTORY_COL_ARTICLE_TITLE + " TEXT, " +
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HISTORY_COL_LANG + " TEXT, " +
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HISTORY_COL_IS_PART_OF + " TEXT, " +
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HISTORY_COL_LAST_ACCESSED + " long);";
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private static final String HISTORY_TABLE_SELECT = "SELECT " +
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HISTORY_COL_CITY_ID + ", " +
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HISTORY_COL_ARTICLE_TITLE + ", " +
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HISTORY_COL_LANG + ", " +
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HISTORY_COL_IS_PART_OF + ", " +
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HISTORY_COL_LAST_ACCESSED +
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" FROM " + HISTORY_TABLE_NAME;
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private final OsmandApplication context;
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private WikivoyageSearchHistoryDbHelper(OsmandApplication context) {
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this.context = context;
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}
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private SQLiteConnection openConnection(boolean readonly) {
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SQLiteConnection conn = context.getSQLiteAPI().getOrCreateDatabase(DB_NAME, readonly);
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int version = conn.getVersion();
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if (version == 0 || DB_VERSION != version) {
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if (readonly) {
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conn.close();
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conn = context.getSQLiteAPI().getOrCreateDatabase(DB_NAME, false);
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}
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version = conn.getVersion();
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conn.setVersion(DB_VERSION);
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if (version == 0) {
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onCreate(conn);
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} else {
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onUpgrade(conn, version, DB_VERSION);
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}
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}
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return conn;
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}
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private void onCreate(SQLiteConnection conn) {
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conn.execSQL(HISTORY_TABLE_CREATE);
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}
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@SuppressWarnings("unused")
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private void onUpgrade(SQLiteConnection conn, int oldVersion, int newVersion) {
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}
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@NonNull
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List<WikivoyageSearchHistoryItem> getAllHistory() {
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List<WikivoyageSearchHistoryItem> res = new ArrayList<>();
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SQLiteConnection conn = openConnection(true);
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if (conn != null) {
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try {
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SQLiteCursor cursor = conn.rawQuery(HISTORY_TABLE_SELECT, null);
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if (cursor.moveToFirst()) {
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do {
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res.add(readItem(cursor));
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} while (cursor.moveToNext());
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}
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} finally {
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conn.close();
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}
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}
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return res;
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}
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void add(WikivoyageSearchHistoryItem item) {
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SQLiteConnection conn = openConnection(false);
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if (conn != null) {
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try {
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conn.execSQL("INSERT INTO " + HISTORY_TABLE_NAME + " VALUES (?, ?, ?, ?, ?)",
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new Object[]{item.cityId, item.articleTitle, item.lang, item.isPartOf, item.lastAccessed});
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} finally {
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conn.close();
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}
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}
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}
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void update(WikivoyageSearchHistoryItem item) {
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SQLiteConnection conn = openConnection(false);
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if (conn != null) {
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try {
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conn.execSQL("UPDATE " + HISTORY_TABLE_NAME + " SET " +
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HISTORY_COL_ARTICLE_TITLE + " = ?, " +
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HISTORY_COL_LANG + " = ?, " +
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HISTORY_COL_IS_PART_OF + " = ?, " +
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HISTORY_COL_LAST_ACCESSED + " = ? " +
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"WHERE " + HISTORY_COL_CITY_ID + " = ?",
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new Object[]{item.articleTitle, item.lang, item.isPartOf, item.lastAccessed, item.cityId});
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} finally {
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conn.close();
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}
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}
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}
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private WikivoyageSearchHistoryItem readItem(SQLiteCursor cursor) {
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WikivoyageSearchHistoryItem res = new WikivoyageSearchHistoryItem();
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res.cityId = cursor.getLong(0);
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res.articleTitle = cursor.getString(1);
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res.lang = cursor.getString(2);
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res.isPartOf = cursor.getString(3);
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res.lastAccessed = cursor.getLong(4);
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return res;
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}
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}
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}
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@ -0,0 +1,30 @@
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package net.osmand.plus.wikivoyage.data;
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public class WikivoyageSearchHistoryItem {
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long cityId;
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String articleTitle;
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String lang;
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String isPartOf;
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long lastAccessed;
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public long getCityId() {
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return cityId;
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}
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public String getArticleTitle() {
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return articleTitle;
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}
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public String getLang() {
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return lang;
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}
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public String getIsPartOf() {
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return isPartOf;
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}
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public long getLastAccessed() {
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return lastAccessed;
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}
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}
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