content: /*
   * 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.arrow.adapter.jdbc.binder;
  
  import java.sql.PreparedStatement;
  import java.sql.SQLException;
  import org.apache.arrow.vector.FieldVector;
  
  /** A ColumnBinder that checks for nullability before deferring to a type-specific binder. */
  public class NullableColumnBinder implements ColumnBinder {
    private final ColumnBinder wrapped;
  
    public NullableColumnBinder(ColumnBinder wrapped) {
      this.wrapped = wrapped;
    }
  
    @Override
    public void bind(PreparedStatement statement, int parameterIndex, int rowIndex)
        throws SQLException {
      if (wrapped.getVector().isNull(rowIndex)) {
        statement.setNull(parameterIndex, wrapped.getJdbcType());
      } else {
        wrapped.bind(statement, parameterIndex, rowIndex);
      }
    }
  
    @Override
    public int getJdbcType() {
      return wrapped.getJdbcType();
    }
  
    @Override
    public FieldVector getVector() {
      return wrapped.getVector();
    }
  }
  