类 org.opencms.db.CmsDbException的使用

使用CmsDbException的程序包
程序包	说明
org.opencms.db	Low-level database connection and access functionality.
org.opencms.db.jpa

org.opencms.db中CmsDbException的子类
限定符和类型	类和说明
`class`	`CmsDbConsistencyException` Signals that a data source consistency problem has been detected.
`class`	`CmsDbEntryAlreadyExistsException` Signals that an attempt to create an object was not successfull because it already exists.
`class`	`CmsDbEntryNotFoundException` Signals that an attempt to read an object from a data source, that is supposed to exist, was not successfull.
`class`	`CmsDbIoException` Signals that an IO exception occurred when reading from or writing to the OpenCms database.
`class`	`CmsDbKeyException` Signals that a foreign key in the VFS STRUCTURE, RESOURCES or FILES database tables is either invalid or empty.
`class`	`CmsDbSqlException` Used to signal sql related issues.

抛出CmsDbException的org.opencms.db中的方法
限定符和类型	方法和说明
`int`	CmsSqlManager.`getActiveConnections(java.lang.String dbPoolUrl)` Returns the number of active connections managed by a pool.
`int`	CmsDriverManager.`getActiveConnections(java.lang.String dbPoolUrl)` Returns the number of active connections managed by a pool.
`int`	CmsSqlManager.`getIdleConnections(java.lang.String dbPoolUrl)` Returns the number of idle connections managed by a pool.
`int`	CmsDriverManager.`getIdleConnections(java.lang.String dbPoolUrl)` Returns the number of idle connections managed by a pool.

类 org.opencms.db.CmsDbException
的使用