IBatis.Net study notes three - two common DAO

In ibatis we can dao type of flexible options, that is, you can choose a different mode of operation in the underlying database. There are conventional ways, the profile of the way, hibernet ways such as:
1, the conventional way
and we develop more similar to previous ado.net, sql statement will write all the code in cs call:
first initialize through a configuration file:

domdaomanagerbuilder builder = new domdaomanagerbuilder();

builder.configure( " dao " + " _ " + configurationmanager.appsettings[ " database " ] + " _ "

+ configurationmanager.appsettings[ " providertype " ] + " .config " );

daomanager = daomanager.getinstance( " simpledao " );

Corresponding to the configuration file as follows:

< context id = " simpledao " default = " true " >

< properties resource = " http://www.cnblogs.com/database.config " />

< database >

< provider name = " sqlserver1.1 " />

< datasource name = " ibatisnet " connectionstring = " data source=${datasource};database=${database};user id=${userid};password=${password};connection reset=false;connection lifetime=5; min pool size=1; max pool size=50 " />

</ database >

< daofactory >

< dao interface = " ibatisnet.dataaccess.test.dao.interfaces.iaccountdao, ibatisnet.dataaccess.test " implementation = " ibatisnet.dataaccess.test.dao.implementations.ado.accountdao, ibatisnet.dataaccess.test " />

</ daofactory >

</ context >

Then in the corresponding, for example accountdao write specific query sql etc.

2 configuration
will sql statement in a configuration file, write and modify more flexible, which is more commonly used way
is first initialized by the configuration file:

domdaomanagerbuilder builder = new domdaomanagerbuilder();

builder.configure( " dao " + " _ " + configurationmanager.appsettings[ " database " ] + " _ "

+ configurationmanager.appsettings[ " providertype " ] + " .config " );

daomanager = daomanager.getinstance( " sqlmapdao " );

Corresponding to the configuration file as follows:

< context id = " sqlmapdao " >

< properties resource = " http://www.cnblogs.com/database.config " />

< database >

</ database >

< daosessionhandler id = " sqlmap " >

< property name = " resource " value = " sqlmap_mssql_sqlclient.config " />

<!-- < property name = " url " value = " e:"projet"ibatis"trunk"cs"mapper"ibatisnet.dataaccess.test"bin"debug"sqlmap_mssql_sqlclient.config " />

-->

<!--

< property name = " embedded " value = " bin.debug.sqlmap_mssql_sqlclient.config, ibatisnet.dataaccess.test " />

-->

</ daosessionhandler >

< daofactory >

</ daofactory >

</ context >

Sql statement of each may then be placed in a separate table a profile, such as:

< select id = " getaccountsdynamic " resultmap = " account-result " parameterclass = " hashtable " >

select top $maximumallowed$ * from accounts

< dynamic prepend = " where " >

< isparameterpresent >

< isnotempty prepend = " and " property = " firstname " >

account_firstname like ' %$firstname$% '

</ isnotempty >

< isnotempty prepend = " and " property = " lastname " >

account_lastname like ' %$lastname$% '

</ isnotempty >

< isnotempty prepend = " and " property = " emailaddress " >

account_email like ' %$emailaddress$% '

</ isnotempty >

</ isparameterpresent >

</ dynamic >

order by account_lastname

</ select >

3、使用hibernet方式
也就是使用hibernet的数据库操作。

原文地址: http://www.cnblogs.com/firstyi/archive/2007/08/17/859772.html

转载于:https://www.cnblogs.com/zyfking/archive/2009/01/19/1378506.html

IBatis.Net study notes three - two common DAO

Guess you like