net.snowflake.client.core.arrow.BigIntToScaledFixedConverter Maven / Gradle / Ivy

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Snowflake JDBC Driver
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/*
 * Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
 */
package net.snowflake.client.core.arrow;

import net.snowflake.client.core.DataConversionContext;
import net.snowflake.client.core.SFException;
import net.snowflake.client.jdbc.ErrorCode;
import net.snowflake.client.jdbc.SnowflakeType;
import org.apache.arrow.vector.ValueVector;

import java.math.BigDecimal;

/**
 * Data vector whose snowflake logical type is fixed while represented as a
 * long value vector with scale
 */
public class BigIntToScaledFixedConverter extends BigIntToFixedConverter
{
  public BigIntToScaledFixedConverter(ValueVector fieldVector, int columnIndex, DataConversionContext context,
                                      int scale)
  {
    super(fieldVector,
          columnIndex,
          context);
    logicalTypeStr = String.format("%s(%s,%s)", SnowflakeType.FIXED,
                                   fieldVector.getField().getMetadata().get("precision"),
                                   fieldVector.getField().getMetadata().get("scale"));
    sfScale = scale;
  }

  @Override
  public float toFloat(int index) throws SFException
  {
    return (float) toDouble(index);
  }

  @Override
  public double toDouble(int index) throws SFException
  {
    if (isNull(index))
    {
      return 0;
    }
    if (sfScale > 9)
    {
      return toBigDecimal(index).doubleValue();
    }
    int scale = sfScale;
    double res = getLong(index);
    res = res / ArrowResultUtil.powerOfTen(scale);
    return res;
  }

  @Override
  public short toShort(int index) throws SFException
  {
    if (isNull(index))
    {
      return 0;
    }
    BigDecimal val = toBigDecimal(index);
    throw new SFException(ErrorCode.INVALID_VALUE_CONVERT, logicalTypeStr,
                          "Short", val.toPlainString());
  }

  @Override
  public int toInt(int index) throws SFException
  {
    if (isNull(index))
    {
      return 0;
    }
    BigDecimal val = toBigDecimal(index);
    throw new SFException(ErrorCode.INVALID_VALUE_CONVERT, logicalTypeStr,
                          "Int", val.toPlainString());
  }

  @Override
  public long toLong(int index) throws SFException
  {
    if (isNull(index))
    {
      return 0;
    }
    BigDecimal val = toBigDecimal(index);
    throw new SFException(ErrorCode.INVALID_VALUE_CONVERT, logicalTypeStr,
                          "Long", val.toPlainString());
  }

  @Override
  public Object toObject(int index)
  {
    return toBigDecimal(index);
  }

  @Override
  public String toString(int index)
  {
    return isNull(index) ? null : BigDecimal.valueOf(getLong(index), sfScale).toPlainString();
  }

  @Override
  public boolean toBoolean(int index) throws SFException
  {
    if (isNull(index))
    {
      return false;
    }
    BigDecimal val = toBigDecimal(index);
    if (val.compareTo(BigDecimal.ZERO) == 0)
    {
      return false;
    }
    else if (val.compareTo(BigDecimal.ONE) == 0)
    {
      return true;
    }
    else
    {
      throw new SFException(ErrorCode.INVALID_VALUE_CONVERT, logicalTypeStr,
                            "Boolean", val.toPlainString());
    }
  }

  @Override
  public byte[] toBytes(int index)
  {
    if (isNull(index))
    {
      return null;
    }
    else
    {
      byteBuf.putLong(0, getLong(index));
      return byteBuf.array();
    }
  }
}