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.
The CopyManager class is in the org.postgresql.copy package class and is inherited from the java.lang.Object class. The declaration of the class is as follows:
public class CopyManager extends Object
public CopyManager(BaseConnection connection)
throws SQLException
Return Value |
Method |
Description |
Throws |
|---|---|---|---|
CopyIn |
copyIn(String sql) |
- |
SQLException |
long |
copyIn(String sql, InputStream from) |
Uses COPY FROM STDIN to quickly import data to tables in a database from InputStream. |
SQLException,IOException |
long |
copyIn(String sql, InputStream from, int bufferSize) |
Uses COPY FROM STDIN to quickly import data to tables in a database from InputStream. |
SQLException,IOException |
long |
copyIn(String sql, Reader from) |
Uses COPY FROM STDIN to quickly import data to tables in a database from Reader. |
SQLException,IOException |
long |
copyIn(String sql, Reader from, int bufferSize) |
Uses COPY FROM STDIN to quickly import data to tables in a 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 a database to the OutputStream class. |
SQLException,IOException |
long |
copyOut(String sql, Writer to) |
Sends the result set of COPY TO STDOUT from a database to the Writer class. |
SQLException,IOException |