/*
 * 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.vector.accessor.impl;

import java.math.BigDecimal;

import org.apache.drill.exec.record.MaterializedField;
import org.apache.drill.exec.vector.ValueVector;
import org.apache.drill.exec.vector.accessor.ArrayReader;
import org.apache.drill.exec.vector.accessor.ColumnReader;
import org.apache.drill.exec.vector.accessor.TupleReader;
import org.joda.time.Period;

/**
 * Column reader implementation that acts as the basis for the
 * generated, vector-specific implementations. All set methods
 * throw an exception; subclasses simply override the supported
 * method(s).
 */

public abstract class AbstractColumnReader extends AbstractColumnAccessor implements ColumnReader {

  public interface VectorAccessor {
    ValueVector vector();
  }

  protected VectorAccessor vectorAccessor;

  public void bind(RowIndex rowIndex, MaterializedField field, VectorAccessor va) {
    bind(rowIndex);
    vectorAccessor = va;
  }

  @Override
  public boolean isNull() {
    return false;
  }

  @Override
  public int getInt() {
    throw new UnsupportedOperationException();
  }

  @Override
  public long getLong() {
    throw new UnsupportedOperationException();
  }

  @Override
  public double getDouble() {
    throw new UnsupportedOperationException();
  }

  @Override
  public String getString() {
    throw new UnsupportedOperationException();
  }

  @Override
  public byte[] getBytes() {
    throw new UnsupportedOperationException();
  }

  @Override
  public BigDecimal getDecimal() {
    throw new UnsupportedOperationException();
  }

  @Override
  public Period getPeriod() {
    throw new UnsupportedOperationException();
  }

  @Override
  public TupleReader map() {
    throw new UnsupportedOperationException();
  }

  @Override
  public ArrayReader array() {
    throw new UnsupportedOperationException();
  }
}