CopyManager

CopyManager is an API class provided by the JDBC driver in GaussDB. It is used to import data to GaussDB in batches.

Inheritance Relationship of CopyManager

The CopyManager class is in the com.huawei.opengauss.jdbc.copy package and inherits the java.lang.Object class. The declaration of the class is as follows:

public class CopyManager
extends Object

Construction Method

public CopyManager(BaseConnection connection)

throws SQLException

Common Methods

**Table 1** Common methods of CopyManager
Method	Return Type	Description	throws
copyIn(String sql)	CopyIn	-	SQLException
copyIn(String sql, InputStream from)	long	Uses COPY FROM STDIN to quickly load data to tables in the database from InputStream.	SQLException,IOException
copyIn(String sql, InputStream from, int bufferSize)	long	Uses COPY FROM STDIN to quickly load data of a specified length to tables in the database from InputStream.	SQLException,IOException
copyIn(String sql, Reader from)	long	Uses COPY FROM STDIN to quickly load data to tables in the database from Reader.	SQLException,IOException
copyIn(String sql, Reader from, int bufferSize)	long	Uses COPY FROM STDIN to quickly load data of a specified length to tables in the database from Reader.	SQLException,IOException
copyOut(String sql)	CopyOut	-	SQLException
copyOut(String sql, OutputStream to)	long	Sends the result set of COPY TO STDOUT from the database to the OutputStream class.	SQLException,IOException
copyOut(String sql, Writer to)	long	Sends the result set of COPY TO STDOUT from the database to the Writer class.	SQLException,IOException