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      iBatis的連接設(shè)置

持久層中間件iBatis連接數(shù)據(jù)庫的方式有3種，連接數(shù)據(jù)庫的方式是JDBC，可以通過在XML文件中配置數(shù)據(jù)庫連接，也可以在properties文件中配置。下面列出transactionManager的type為JDBC的3種連接配置。

 

dataSource的type為SIMPLE的連接配置

以下是配置數(shù)據(jù)庫連接參數(shù)的properties文件sql-map-config.properties的內(nèi)容：

 ## SimpleDataSource properties 

 ## Use only if useSimpleConfiguration=true 

 

 # DMDBMS 

 SimpleDriver=dm.jdbc.driver.DmDriver 

 SimpleUrl=jdbc:dm://localhost:12345/SYSTEM 

 SimpleUsername=SYSDBA 

SimplePassword=SYSDBA

 

以下是配置文件sql-map-config.xml的內(nèi)容：

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<!DOCTYPE sqlMapConfig

 PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"

 "http://www.ibatis.com/dtd/sql-map-config-2.dtd">

 

<sqlMapConfig>

 <properties resource="res/config/sql-map-config.properties" />

 <settings cacheModelsEnabled="true" enhancementEnabled="true"

 maxSessi*****="64" maxTransacti*****="20" maxRequests="128"

 useStatementNamespaces="true" />

 <transactionManager type="JDBC">

 <dataSource type="SIMPLE">

 <property value="$" name="JDBC.Driver" />

 <property value="$" name="JDBC.ConnectionURL" />

 <property value="$" name="JDBC.Username" />

 <property value="$" name="JDBC.Password" />

 <property value="15" name="Pool.MaximumActiveConnecti*****" />

 <property value="15" name="Pool.MaximumIdleConnecti*****" />

 <property value="1000" name="Pool.MaximumWait" />

 </dataSource>

 </transactionManager>

 <sqlMap resource="res/sqlmap/User.xml" />

 <sqlMap resource="res/sqlmap/Role.xml" />

 <sqlMap resource="res/sqlmap/Permit.xml" />

</sqlMapConfig>

說明：如果要優(yōu)化數(shù)據(jù)庫連接池，可以在sql-map-config.xml修改相關(guān)參數(shù)：

Pool.MaximumActiveConnecti***** 最大連接數(shù)

Pool.MaximumIdleConnecti***** 允許的掛起（idle）連接數(shù)

Pool.MaximumWait 最長等待的時間

 

dataSource的type為DHCP的連接配置

<transactionManager type="JDBC">

 <dataSource type="DBCP">

  <property name="JDBC.Driver" value="$"/>

  <property name="JDBC.ConnectionURL" value="$"/>

  <property name="JDBC.Username" value="$"/>

  <property name="JDBC.Password" value="$"/>

  <!-- Optional properties below -->

  <property name="Pool.MaximumIdleConnecti*****" value="5"/>

  <property name="Pool.MaximumWait" value="60000"/>

  <!-- Use of the validation query can be problematic.

 If you have difficulty, try without it. -->

  <property name="Pool.ValidationQuery" value="select now"/>

  <property name="Pool.LogAbandoned" value="false"/>

  <property name="Pool.RemoveAbandoned" value="false"/>

  <property name="Pool.RemoveAbandonedTimeout" value="50000"/>

 </datasource>

</transactionManager>

說明：上面的$等連接信息定義在另外一個properties文件或XML文件中，同dataSource的type為SIMPLE的連接配置。

 

dataSource的type為JNDI的連接配置

<transactionManager type="JDBC" >

 <dataSource type="JNDI">

  <property name="DataSource" value="java:comp/env/jdbc/jpetstore"/>

 </dataSource>

</transactionManager>

說明：前提是在應(yīng)用服務(wù)器中配置了JNDI為jdbc/jpetstore的配置。

     <bean id="dataSourceA" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="automaticTestTable" value="CONNECTION_TEST" />
        <property name="testConnectionOnCheckout" value="true" />
        <property name="acquireRetryAttempts" value="1" />
        <property name="driverClass" 
            value="org.apache.derby.jdbc.ClientDriver" />
        <property name="jdbcUrl" 
            value="jdbc:derby://localhost:1527/d:/work/lms" />
        <property name="user" value="someUser" />
        <property name="password" value="somePassword" />
</bean>        
     <bean id="dataSourceB" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="automaticTestTable" value="CONNECTION_TEST" />
        <property name="testConnectionOnCheckout" value="true" />
        <property name="acquireRetryAttempts" value="1" />
        <property name="driverClass" value="com.ibm.as400.access.AS400JDBCDriver" />
        <property name="jdbcUrl" 
            value="jdbc:as400://192.168.85.1.1;driver=native;naming=system;errors=full;prompt=false;libraries=*LIBL,SOME_LIB,OTHER_LIB;
                transaction isolation=read committed" />
        <property name="user" value="someUser" />
        <property name="password" value="somePassword" />
 
 


    

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