https://github.com/pgjdbc/pgjdbc: Java JDBC 4.2 (JRE 8+) driver for PostgreSQL database (PostgreSQL Global Development Group)
  • Dave Cramer
  • Kris Jurka
  • Oliver Jowett
  • Craig Ringer
  • Vladimir Sitnikov 
/*
 * Copyright (c) 2009, PostgreSQL Global Development Group
 * See the LICENSE file in the project root for more information.
 */

package org.postgresql.copy;

import java.sql.SQLException;

public interface CopyOut extends CopyOperation {
  
Blocks wait for a row of data to be received from server on an active copy operation.

Throws:
  • SQLException – if something goes wrong for example socket timeout
Returns:byte array received from server, null if server complete copy operation
/**
   * Blocks wait for a row of data to be received from server on an active copy operation.
   *
   * @return byte array received from server, null if server complete copy operation
   * @throws SQLException if something goes wrong for example socket timeout
   */
  byte[] readFromCopy() throws SQLException;

  
Wait for a row of data to be received from server on an active copy operation.

Params:
  • block – true if need wait data from server otherwise false and will read pending message from server
Throws:
  • SQLException – if something goes wrong for example socket timeout
Returns:byte array received from server, if pending message from server absent and use no
        blocking mode return null
/**
   * Wait for a row of data to be received from server on an active copy operation.
   *
   * @param block {@code true} if need wait data from server otherwise {@code false} and will read
   *              pending message from server
   * @return byte array received from server, if pending message from server absent and use no
   *         blocking mode return null
   * @throws SQLException if something goes wrong for example socket timeout
   */
  byte[] readFromCopy(boolean block) throws SQLException;
}