程序包 com.alibaba.druid.pool.vendor

类 MySqlValidConnectionChecker

java.lang.Object

com.alibaba.druid.pool.ValidConnectionCheckerAdapter

com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker

所有已实现的接口:

ValidConnectionChecker, Serializable

public class MySqlValidConnectionChecker
extends ValidConnectionCheckerAdapter
implements ValidConnectionChecker, Serializable

另请参阅:

• 序列化表格

字段概要

字段

修饰符和类型	字段	说明
static final String	DEFAULT_VALIDATION_QUERY
static final int	DEFAULT_VALIDATION_QUERY_TIMEOUT

构造器概要

构造器

构造器	说明
MySqlValidConnectionChecker()

方法概要

修饰符和类型	方法	说明
void	configFromProperties(Properties properties)
boolean	isUsePingMethod()
boolean	isValidConnection(Connection conn, String validateQuery, int validationQueryTimeout)
void	setUsePingMethod(boolean usePingMethod)

从类继承的方法 com.alibaba.druid.pool.ValidConnectionCheckerAdapter

execValidQuery

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

DEFAULT_VALIDATION_QUERY_TIMEOUT

public static final int DEFAULT_VALIDATION_QUERY_TIMEOUT

另请参阅:

• 常量字段值

DEFAULT_VALIDATION_QUERY

public static final String DEFAULT_VALIDATION_QUERY

另请参阅:

• Connection Pooling with Connector/J

  specify a validation query in your connection pool that starts with /* ping */. Note that the syntax must be exactly as specified. This will cause the driver send a ping to the server and return a dummy lightweight result set. When using a ReplicationConnection or LoadBalancedConnection, the ping will be sent across all active connections.

• 常量字段值

构造器详细资料

MySqlValidConnectionChecker

public MySqlValidConnectionChecker()

方法详细资料

configFromProperties

public void configFromProperties(Properties properties)

指定者:

configFromProperties 在接口中 ValidConnectionChecker

覆盖:

configFromProperties 在类中 ValidConnectionCheckerAdapter

参数:

properties - the properties to be used for configuration

isUsePingMethod

public boolean isUsePingMethod()

setUsePingMethod

public void setUsePingMethod(boolean usePingMethod)

isValidConnection

public boolean isValidConnection(Connection conn,
 String validateQuery,
 int validationQueryTimeout)
                          throws Exception

指定者:

isValidConnection 在接口中 ValidConnectionChecker

覆盖:

isValidConnection 在类中 ValidConnectionCheckerAdapter

抛出:

Exception