CopyManager¶
CopyManager is an API interface class provided by the JDBC driver in GaussDB(DWS). It is used to import data to GaussDB(DWS) in batches.
Inheritance Relationship of CopyManager¶
The CopyManager class is in the org.postgresql.copy package class 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
Basic Methods¶
Return Value | Method | Description | throws |
|---|---|---|---|
CopyIn | copyIn(String sql) |
| SQLException |
long | copyIn(String sql, InputStream from) | Uses COPY FROM STDIN to quickly load data to tables in the database from InputStream. | SQLException,IOException |
long | copyIn(String sql, InputStream from, int bufferSize) | Uses COPY FROM STDIN to quickly load data to tables in the database from InputStream. | SQLException,IOException |
long | copyIn(String sql, Reader from) | Uses COPY FROM STDIN to quickly load data to tables in the database from Reader. | SQLException,IOException |
long | copyIn(String sql, Reader from, int bufferSize) | Uses COPY FROM STDIN to quickly load data to tables in the database from Reader. | SQLException,IOException |
CopyOut | copyOut(String sql) |
| SQLException |
long | copyOut(String sql, OutputStream to) | Sends the result set of COPY TO STDOUT from the database to the OutputStream class. | SQLException,IOException |
long | copyOut(String sql, Writer to) | Sends the result set of COPY TO STDOUT from the database to the Writer class. | SQLException,IOException |