Android Open Source - android-mvc-framework D B Helper

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License

The source code is released under:

Apache License

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Java Source Code

package com.android_mvc.framework.db;
//www .  j  a  v a  2 s  .c  o m
import java.io.File;

import com.android_mvc.framework.common.FWUtil;
import com.android_mvc.framework.db.schema.AbstractSchemaDefinition;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

/**
 * DB?????????????
 * @author id:language_and_engineering
 */
public class DBHelper extends SQLiteOpenHelper
{

    // ?????????
    public static String DB_NAME = ""; // AP????????????????

    // ?????????????
    private static String DB_FULL_PATH = "";

    // ????????????
    private static final int DB_VERSION = 1; // TODO:


    // DB??????????????
    AbstractSchemaDefinition schemaDefinition;


    /**
     * ???????
     */
    public DBHelper(Context context)
    {
        super(context, DB_NAME, null, DB_VERSION);

        //this.context  = context;
    }


    /**
     * ?????????????????????????????
     */
    public void createSchemaIfNotExists( AbstractSchemaDefinition sd )
    {
        schemaDefinition = sd;

        // ???????????????DB??????????????
        // ?????????????????????????????onCreate??????????
        // onCreate??????????????????????????????
        getWritableDatabase().close();
            // @see http://d.hatena.ne.jp/language_and_engineering/20111202/p1
            // @see http://stackoverflow.com/questions/5024223/sqliteopenhelper-failing-to-call-oncreate
            // NOTE:close???????????????????????????????
    }


    /**
     * ??????????
     * ????????????????????????????????????????????????????
     */
    @Override
    public void onCreate(SQLiteDatabase db)
    {
        // ?????????????????????????????????????????????????????
        schemaDefinition.createAll( db );

/*
        // ?????????????????????????????????????????????????????????????????
        for( int i = 0 ; i < 10; i ++ ){
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
*/
        FWUtil.d("DB?????????????");

    }


    /**
     * ????????????
     * ?????????????????????version?????????????????????????????
     */
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
    {
      // TODO:
        //DBInitializer.exec_update(db, this);
    }


    /**
     * DB???
     */
    public void deleteDB()
    {
        FWUtil.d("DB?????????????");
        new File(DB_FULL_PATH).delete();
        FWUtil.d("DB????????????????");
    }


    // G&S


    /**
     * DB??????????
     */
    public static void setDB_NAME(String db_name)
    {
        DB_NAME = db_name;
        FWUtil.d("????????DB??????" + DB_NAME);
    }


    /**
     * DB??????????????
     */
    public static void setDB_FULLPATH(String dbFullpath)
    {
        DB_FULL_PATH = dbFullpath;
    }

}

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