111 lines
3.0 KiB
Java
111 lines
3.0 KiB
Java
package com.gh.gamecenter.db;
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import android.content.Context;
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import android.database.sqlite.SQLiteDatabase;
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import android.support.v4.util.ArrayMap;
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import com.gh.common.util.Utils;
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import com.gh.gamecenter.db.info.ConcernInfo;
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import com.gh.gamecenter.db.info.DataCollectionInfo;
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import com.gh.gamecenter.db.info.FilterInfo;
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import com.gh.gamecenter.db.info.GameInfo;
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import com.gh.gamecenter.db.info.SearchHistoryInfo;
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import com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper;
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import com.j256.ormlite.dao.Dao;
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import com.j256.ormlite.support.ConnectionSource;
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import com.j256.ormlite.table.TableUtils;
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import java.sql.SQLException;
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public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
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private static final String DATABASE_NAME = "gh_assist.db";
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private static final int DATABASE_VERSION = 2;
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private static DatabaseHelper instance;
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private ArrayMap<String, Dao> daos = new ArrayMap<String, Dao>();
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private DatabaseHelper(Context context) {
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super(context, DATABASE_NAME, null, DATABASE_VERSION);
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}
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/**
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* 单例获取该Helper
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*
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* @param context
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* @return
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*/
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public static synchronized DatabaseHelper getHelper(Context context) {
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context = context.getApplicationContext();
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if (instance == null) {
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synchronized (DatabaseHelper.class) {
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if (instance == null) {
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instance = new DatabaseHelper(context);
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}
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}
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}
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return instance;
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}
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@Override
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public void onCreate(SQLiteDatabase database,
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ConnectionSource connectionSource) {
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try {
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Utils.log("onCreate");
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TableUtils.createTable(connectionSource, ConcernInfo.class);
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TableUtils.createTable(connectionSource, SearchHistoryInfo.class);
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TableUtils.createTable(connectionSource, GameInfo.class);
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TableUtils.createTable(connectionSource, FilterInfo.class);
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TableUtils.createTable(connectionSource, DataCollectionInfo.class);
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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@Override
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public void onUpgrade(SQLiteDatabase database,
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ConnectionSource connectionSource, int oldVersion, int newVersion) {
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try {
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Utils.log("onUpgrade");
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TableUtils.dropTable(connectionSource, ConcernInfo.class, true);
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TableUtils.dropTable(connectionSource, SearchHistoryInfo.class, true);
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TableUtils.dropTable(connectionSource, GameInfo.class, true);
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TableUtils.dropTable(connectionSource, FilterInfo.class, true);
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TableUtils.dropTable(connectionSource, DataCollectionInfo.class, true);
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onCreate(database, connectionSource);
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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public synchronized Dao getDao(Class clazz) throws SQLException {
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Dao dao = null;
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String className = clazz.getSimpleName();
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if (daos.containsKey(className)) {
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dao = daos.get(className);
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}
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if (dao == null) {
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dao = super.getDao(clazz);
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daos.put(className, dao);
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}
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return dao;
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}
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/**
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* 释放资源
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*/
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@Override
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public void close() {
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super.close();
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for (String key : daos.keySet()) {
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Dao dao = daos.get(key);
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dao = null;
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}
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}
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}
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