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/*-------------------------------------------------------------------------
*
* Copyright (c) 2009-2011, PostgreSQL Global Development Group
*
*
*-------------------------------------------------------------------------
*/
package org.postgresql.copy;
import java.sql.SQLException;
/**
* Copy bulk data from client into a PostgreSQL table very fast.
*/
public interface CopyIn extends CopyOperation {
/**
* Writes specified part of given byte array to an open and writable copy operation.
* @param buf array of bytes to write
* @param off offset of first byte to write (normally zero)
* @param siz number of bytes to write (normally buf.length)
* @throws SQLException if the operation fails
*/
void writeToCopy(byte[] buf, int off, int siz) throws SQLException;
/**
* Force any buffered output to be sent over the network to the
* backend. In general this is a useless operation as it will get
* pushed over in due time or when endCopy is called. Some specific
* modified server versions (Truviso) want this data sooner.
* If you are unsure if you need to use this method, don't.
*/
void flushCopy() throws SQLException;
/**
* Finishes copy operation succesfully.
* @return number of updated rows for server 8.2 or newer (see getHandledRowCount())
* @throws SQLException if the operation fails.
*/
public long endCopy() throws SQLException;
}
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