proxool.xml文件 详解
<?xml version="1.0" encoding="ISO-8859-1"?> <!-- Properties for Proxool Configurator testing. Defines the same parameters as TestHelper.buildCompleteAlternativeProperties() --> <something-else-entirely xmlns="http://sumthin.else.entirely" xmlns:proxool="The latest version is available athttp://proxool.sourceforge.net/xml-namespace"> <proxool:proxool> <proxool:alias>xml-test-ns</proxool:alias> <proxool:driver-url>jdbc:hsqldb:db/test</proxool:driver-url> <proxool:driver-class>org.hsqldb.jdbcDriver</proxool:driver-class> <proxool:driver-properties> <proxool:property name="user" value="sa"/> <proxool:property name="password" value=""/> </proxool:driver-properties> <proxool:house-keeping-sleep-time>40000</proxool:house-keeping-sleep-time> <proxool:house-keeping-test-sql>select CURRENT_DATE</proxool:house-keeping-test-sql> <proxool:maximum-connection-count>10</proxool:maximum-connection-count> <proxool:minimum-connection-count>3</proxool:minimum-connection-count> <proxool:maximum-connection-lifetime>18000000</proxool:maximum-connection-lifetime> <!-- 5 hours --> <proxool:simultaneous-build-throttle>5</proxool:simultaneous-build-throttle> <proxool:recently-started-threshold>40000</proxool:recently-started-threshold> <proxool:overload-without-refusal-lifetime>50000</proxool:overload-without-refusal-lifetime> <proxool:maximum-active-time>60000</proxool:maximum-active-time> <proxool:verbose>true</proxool:verbose> <proxool:trace>true</proxool:trace> <proxool:fatal-sql-exception>Fatal error</proxool:fatal-sql-exception> <proxool:prototype-count>2</proxool:prototype-count> </proxool:proxool> <nothing-to-do-with-proxool> <proxool:proxool> <proxool:alias>xml-test-ns-2</proxool:alias> <proxool:driver-url>jdbc:hsqldb:db/test</proxool:driver-url> <proxool:driver-class>org.hsqldb.jdbcDriver</proxool:driver-class> <proxool:driver-properties> <proxool:property name="user" value="sa"/> <proxool:property name="password" value=""/> </proxool:driver-properties> <proxool:house-keeping-sleep-time>40000</proxool:house-keeping-sleep-time> <proxool:house-keeping-test-sql>select CURRENT_DATE</proxool:house-keeping-test-sql> <proxool:maximum-connection-count>10</proxool:maximum-connection-count> <proxool:minimum-connection-count>3</proxool:minimum-connection-count> <proxool:maximum-connection-lifetime>18000000</proxool:maximum-connection-lifetime> <!-- 5 hours --> <proxool:simultaneous-build-throttle>5</proxool:simultaneous-build-throttle> <proxool:recently-started-threshold>40000</proxool:recently-started-threshold> <proxool:overload-without-refusal-lifetime>50000</proxool:overload-without-refusal-lifetime> <proxool:maximum-active-time>60000</proxool:maximum-active-time> <proxool:verbose>true</proxool:verbose> <proxool:trace>true</proxool:trace> <proxool:fatal-sql-exception>Fatal error</proxool:fatal-sql-exception> <proxool:prototype-count>2</proxool:prototype-count> </proxool:proxool> </nothing-to-do-with-proxool> </something-else-entirely> <?xml version="1.0" encoding="ISO-8859-1"?><!--Properties for Proxool Configurator testing. Defines the same parameters asTestHelper.buildCompleteAlternativeProperties()--><something-else-entirely xmlns="http://sumthin.else.entirely" xmlns:proxool="The latest version is available athttp://proxool.sourceforge.net/xml-namespace"><proxool:proxool><proxool:alias>xml-test-ns</proxool:alias><proxool:driver-url>jdbc:hsqldb:db/test</proxool:driver-url><proxool:driver-class>org.hsqldb.jdbcDriver</proxool:driver-class><proxool:driver-properties><proxool:property name="user" value="sa"/><proxool:property name="password" value=""/></proxool:driver-properties><proxool:house-keeping-sleep-time>40000</proxool:house-keeping-sleep-time><proxool:house-keeping-test-sql>select CURRENT_DATE</proxool:house-keeping-test-sql><proxool:maximum-connection-count>10</proxool:maximum-connection-count><proxool:minimum-connection-count>3</proxool:minimum-connection-count><proxool:maximum-connection-lifetime>18000000</proxool:maximum-connection-lifetime> <!-- 5 hours --><proxool:simultaneous-build-throttle>5</proxool:simultaneous-build-throttle><proxool:recently-started-threshold>40000</proxool:recently-started-threshold><proxool:overload-without-refusal-lifetime>50000</proxool:overload-without-refusal-lifetime><proxool:maximum-active-time>60000</proxool:maximum-active-time><proxool:verbose>true</proxool:verbose><proxool:trace>true</proxool:trace><proxool:fatal-sql-exception>Fatal error</proxool:fatal-sql-exception><proxool:prototype-count>2</proxool:prototype-count></proxool:proxool><nothing-to-do-with-proxool><proxool:proxool><proxool:alias>xml-test-ns-2</proxool:alias><proxool:driver-url>jdbc:hsqldb:db/test</proxool:driver-url><proxool:driver-class>org.hsqldb.jdbcDriver</proxool:driver-class><proxool:driver-properties><proxool:property name="user" value="sa"/><proxool:property name="password" value=""/></proxool:driver-properties><proxool:house-keeping-sleep-time>40000</proxool:house-keeping-sleep-time><proxool:house-keeping-test-sql>select CURRENT_DATE</proxool:house-keeping-test-sql><proxool:maximum-connection-count>10</proxool:maximum-connection-count><proxool:minimum-connection-count>3</proxool:minimum-connection-count><proxool:maximum-connection-lifetime>18000000</proxool:maximum-connection-lifetime> <!-- 5 hours --><proxool:simultaneous-build-throttle>5</proxool:simultaneous-build-throttle><proxool:recently-started-threshold>40000</proxool:recently-started-threshold><proxool:overload-without-refusal-lifetime>50000</proxool:overload-without-refusal-lifetime><proxool:maximum-active-time>60000</proxool:maximum-active-time><proxool:verbose>true</proxool:verbose><proxool:trace>true</proxool:trace><proxool:fatal-sql-exception>Fatal error</proxool:fatal-sql-exception><proxool:prototype-count>2</proxool:prototype-count></proxool:proxool></nothing-to-do-with-proxool></something-else-entirely>
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属性列表说明:
fatal-sql-exception: 它是一个逗号分割的信息片段.当一个SQL异常发生时,他的异常信息将与这个信息片段进行比较.如果在片段中存在,那么这个异常将被认为是个致命错误 (Fatal SQL Exception ).这种情况下,数据库连接将要被放弃.无论发生什么,这个异常将会被重掷以提供给消费者.用户最好自己配置一个不同的异常来抛出.
fatal-sql-exception-wrapper-class:正如上面所说,你最好配置一个不同的异常来重掷.利用这个属性,用户可以包装SQLException,使他变成另外一个异常.这个异常或者继承 SQLException或者继承字RuntimeException.proxool自带了2个实现:'org.logicalcobwebs.proxool.FatalSQLException' 和'org.logicalcobwebs.proxool.FatalRuntimeException' .后者更合适.
house-keeping-sleep-time: house keeper 保留线程处于睡眠状态的最长时间,house keeper 的职责就是检查各个连接的状态,并判断是否需要销毁或者创建.
house-keeping-test-sql:? 如果发现了空闲的数据库连接.house keeper 将会用这个语句来测试.这个语句最好非常快的被执行.如果没有定义,测试过程将会被忽略。
injectable-connection-interface: 允许proxool实现被代理的connection对象的方法.
injectable-statement-interface: 允许proxool实现被代理的Statement 对象方法.
injectable-prepared-statement-interface: 允许proxool实现被代理的PreparedStatement 对象方法.
injectable-callable-statement-interface: 允许proxool实现被代理的CallableStatement 对象方法.
jmx: 略
jmx-agent-id: 略
jndi-name: 数据源的名称
maximum-active-time: 如果housekeeper 检测到某个线程的活动时间大于这个数值.它将会杀掉这个线程.所以确认一下你的服务器的带宽.然后定一个合适的值.默认是5分钟.
maximum-connection-count: 最大的数据库连接数.
maximum-connection-lifetime: 一个线程的最大寿命.
minimum-connection-count: 最小的数据库连接数
overload-without-refusal-lifetime: 略
prototype-count: 连接池中可用的连接数量.如果当前的连接池中的连接少于这个数值.新的连接将被建立(假设没有超过最大可用数).例如.我们有3个活动连接2个可用连接, 而我们的prototype-count是4,那么数据库连接池将试图建立另外2个连接.这和 minimum-connection-count不同. minimum-connection-count把活动的连接也计算在内.prototype-count 是spare connections 的数量.
recently-started-threshold:? 略
simultaneous-build-throttle:? 略
statistics:? 连接池使用状况统计。 参数“10s,1m,1d”
statistics-log-level:? 日志统计跟踪类型。 参数“ERROR”或 “INFO”
test-before-use: 略
test-after-use: 略
trace: 如果为true,那么每个被执行的SQL语句将会在执行期被log记录(DEBUG LEVEL).你也可以注册一个ConnectionListener (参看ProxoolFacade)得到这些信息.
verbose: 详细信息设置。 参数 bool 值
