android sqlite插入效率（转载）

时间：2014-03-31 12:21:08 阅读：637 评论：0 收藏：0 [点我收藏+]

对比在android中批量插入数据的3中方式对比（各插入1W条数据所花费的时间）：

1、一个一个插入

Java代码

/**
* 向表中插入数据
*
* @param openHelper
* @param appInfo
* @return
*/
publicstaticboolean insert(SQLiteOpenHelper openHelper,
RemoteAppInfo appInfo) {
if (null == appInfo) {
returntrue;
}
SQLiteDatabase db = null;
try {
db = openHelper.getWritableDatabase();
ContentValues values = appInfo.getContentValues();
return -1 != db.insert(RemoteDBHelper.TABLE_APP_REMOTE, null,
values);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (null != db) {
db.close();
}
}
returnfalse;
}
for (RemoteAppInfo remoteAppInfo : list) {
RemoteDBUtil.insert(helper, remoteAppInfo);
}

耗时：106524ms,也就是106s

2、开启事务批量插入，使用

SqliteDateBase中的

insert(String table, String nullColumnHack, ContentValues values)

方法

Java代码

/**
* 向表中插入一串数据
*
* @param openHelper
* @param appInfo
* @return 如果成功则返回true，否则返回flase
*/
publicstaticboolean insert(SQLiteOpenHelper openHelper,
List<RemoteAppInfo> list) {
boolean result = true;
if (null == list || list.size() <= 0) {
returntrue;
}
SQLiteDatabase db = null;
try {
db = openHelper.getWritableDatabase();
db.beginTransaction();
for (RemoteAppInfo remoteAppInfo : list) {
ContentValues values = remoteAppInfo.getContentValues();
if (db.insert(RemoteDBHelper.TABLE_APP_REMOTE, null, values) < 0) {
result = false;
break;
}
}
if (result) {
db.setTransactionSuccessful();
}
} catch (Exception e) {
e.printStackTrace();
returnfalse;
} finally {
try {
if (null != db) {
db.endTransaction();
db.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
returntrue;
}

耗时：2968ms

3、开启事务批量插入，使用

SQLiteStatement

Java代码

/**
* 第二种方式批量插入(插入1W条数据耗时：1365ms)
* @param openHelper
* @param list
* @return
*/
publicstaticboolean insertBySql(SQLiteOpenHelper openHelper,
List<RemoteAppInfo> list) {
if (null == openHelper || null == list || list.size() <= 0) {
returnfalse;
}
SQLiteDatabase db = null;
try {
db = openHelper.getWritableDatabase();
String sql = "insert into " + RemoteDBHelper.TABLE_APP_REMOTE + "("
+ RemoteDBHelper.COL_PKG_NAME + ","// 包名
+ RemoteDBHelper.COL_USER_ACCOUNT + ","// 账号
+ RemoteDBHelper.COL_APP_SOURCE + ","// 来源
+ RemoteDBHelper.COL_SOURCE_UNIQUE + ","// PC mac 地址
+ RemoteDBHelper.COL_MOBILE_UNIQUE + ","// 手机唯一标识
+ RemoteDBHelper.COL_IMEI + ","// 手机IMEI
+ RemoteDBHelper.COL_INSTALL_STATUS + ","// 安装状态
+ RemoteDBHelper.COL_TRANSFER_RESULT + ","// 传输状态
+ RemoteDBHelper.COL_REMOTE_RECORD_ID // 唯一标识
+ ") " + "values(?,?,?,?,?,?,?,?,?)";
SQLiteStatement stat = db.compileStatement(sql);
db.beginTransaction();
for (RemoteAppInfo remoteAppInfo : list) {
stat.bindString(1, remoteAppInfo.getPkgName());
stat.bindString(2, remoteAppInfo.getAccount());
stat.bindLong(3, remoteAppInfo.getFrom());
stat.bindString(4, remoteAppInfo.getFromDeviceMd5());
stat.bindString(5, remoteAppInfo.getMoblieMd5());
stat.bindString(6, remoteAppInfo.getImei());
stat.bindLong(7, remoteAppInfo.getInstallStatus());
stat.bindLong(8, remoteAppInfo.getTransferResult());
stat.bindString(9, remoteAppInfo.getRecordId());
long result = stat.executeInsert();
if (result < 0) {
returnfalse;
}
}
db.setTransactionSuccessful();
} catch (Exception e) {
e.printStackTrace();
returnfalse;
} finally {
try {
if (null != db) {
db.endTransaction();
db.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
returntrue;
}

耗时：1365ms

android sqlite插入效率（转载）,布布扣,bubuko.com

android sqlite插入效率（转载）

原文：http://www.cnblogs.com/elliotta/p/3633739.html

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