How to use

lock

method

in

org.postgresql.core.v3.QueryExecutorImpl

/**
 * Locks connection and calls initializer for a new CopyOperation Called via startCopy ->
 * processCopyResults.
 *
 * @param op an uninitialized CopyOperation
 * @throws SQLException on locking failure
 * @throws IOException on database connection failure
 */
private synchronized void initCopy(CopyOperationImpl op) throws SQLException, IOException {
 pgStream.receiveInteger4(); // length not used
 int rowFormat = pgStream.receiveChar();
 int numFields = pgStream.receiveInteger2();
 int[] fieldFormats = new int[numFields];
 for (int i = 0; i < numFields; i++) {
  fieldFormats[i] = pgStream.receiveInteger2();
 }
 lock(op);
 op.init(this, rowFormat, fieldFormats);
}

/**
 * Locks connection and calls initializer for a new CopyOperation
 * Called via startCopy -> processCopyResults
 * @param op an unitialized CopyOperation
 * @throws SQLException on locking failure
 * @throws IOException on database connection failure
 */
private synchronized void initCopy(CopyOperationImpl op) throws SQLException, IOException {
  pgStream.ReceiveInteger4(); // length not used
  int rowFormat = pgStream.ReceiveChar();
  int numFields = pgStream.ReceiveInteger2();
  int[] fieldFormats = new int[numFields];
  for(int i=0; i<numFields; i++)
    fieldFormats[i] = pgStream.ReceiveInteger2();
  lock(op);
  op.init(this, rowFormat, fieldFormats);
}

/**
 * Locks connection and calls initializer for a new CopyOperation
 * Called via startCopy -> processCopyResults
 * @param op an unitialized CopyOperation
 * @throws SQLException on locking failure
 * @throws IOException on database connection failure
 */
private synchronized void initCopy(CopyOperationImpl op) throws SQLException, IOException {
  pgStream.ReceiveInteger4(); // length not used
  int rowFormat = pgStream.ReceiveChar();
  int numFields = pgStream.ReceiveInteger2();
  int[] fieldFormats = new int[numFields];
  for(int i=0; i<numFields; i++)
    fieldFormats[i] = pgStream.ReceiveInteger2();
  lock(op);
  op.init(this, rowFormat, fieldFormats);
}

/**
 * Locks connection and calls initializer for a new CopyOperation
 * Called via startCopy -> processCopyResults
 * @param op an unitialized CopyOperation
 * @throws SQLException on locking failure
 * @throws IOException on database connection failure
 */
private synchronized void initCopy(CopyOperationImpl op) throws SQLException, IOException {
  pgStream.ReceiveInteger4(); // length not used
  int rowFormat = pgStream.ReceiveChar();
  int numFields = pgStream.ReceiveInteger2();
  int[] fieldFormats = new int[numFields];
  for(int i=0; i<numFields; i++)
    fieldFormats[i] = pgStream.ReceiveInteger2();
  lock(op);
  op.init(this, rowFormat, fieldFormats);
}