contrib/storage-jdbc/src/main/java/org/apache/drill/exec/store/jdbc/writers/JdbcVarcharWriter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.drill.exec.store.jdbc.writers;

import org.apache.drill.exec.physical.resultSet.RowSetLoader;
import com.google.common.base.Strings;

import java.sql.ResultSet;
import java.sql.SQLException;

public class JdbcVarcharWriter extends JdbcColumnWriter {

  public JdbcVarcharWriter(String colName, RowSetLoader rowWriter, int columnIndex) {
    super(colName, rowWriter, columnIndex);
  }

  @Override
  public void load(ResultSet results) throws SQLException {
    String value = results.getString(columnIndex);

    if (Strings.isNullOrEmpty(value)) {
      columnWriter.setNull();
    }  else {
      columnWriter.setString(value);
    }
  }
}