code: @Override
    public void insert(String databaseName, String table, JdbcEntryData jdbcEntryData) throws SQLException {
      if (this.columnNames.isEmpty()) {
        for (JdbcEntryDatum datum : jdbcEntryData) {
          this.columnNames.add(datum.getColumnName());
        }
        initializeBatch(databaseName, table);
      }
      this.pendingInserts.add(jdbcEntryData);
  
      if (this.pendingInserts.size() == this.batchSize) {
        executeBatchInsert(this.insertPstmtForFixedBatch); // Reuse pre-computed Preparedstatement.
      }
    }
docs: <p>
  Inserts entry into buffer. If current # of entries filled batch size or it overflowed the buffer,
  it will call underlying JDBC to actually insert it.
  </p>
  
  {@inheritDoc}
  @see org.apache.gobblin.writer.commands.JdbcBufferedInserter#insert(java.lang.String, java.lang.String, org.apache.gobblin.converter.jdbc.JdbcEntryData)