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

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Snowflake JDBC Driver
There is a newer version: 3.21.0
/*
 * Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
 */
package net.snowflake.client.core.arrow;

import java.nio.ByteBuffer;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.TimeZone;
import net.snowflake.client.core.DataConversionContext;
import net.snowflake.client.core.ResultUtil;
import net.snowflake.client.core.SFException;
import net.snowflake.client.jdbc.ErrorCode;
import net.snowflake.client.jdbc.SnowflakeTimeWithTimezone;
import net.snowflake.client.jdbc.SnowflakeType;
import net.snowflake.client.jdbc.SnowflakeUtil;
import org.apache.arrow.vector.BigIntVector;
import org.apache.arrow.vector.ValueVector;

/** converter from BigInt (Long) to Timestamp_NTZ */
public class BigIntToTimestampNTZConverter extends AbstractArrowVectorConverter {
  private BigIntVector bigIntVector;
  private static final TimeZone NTZ = TimeZone.getTimeZone("UTC");
  private ByteBuffer byteBuf = ByteBuffer.allocate(BigIntVector.TYPE_WIDTH);

  public BigIntToTimestampNTZConverter(
      ValueVector fieldVector, int columnIndex, DataConversionContext context) {
    super(SnowflakeType.TIMESTAMP_NTZ.name(), fieldVector, columnIndex, context);
    this.bigIntVector = (BigIntVector) fieldVector;
  }

  @Override
  public String toString(int index) throws SFException {
    if (context.getTimestampNTZFormatter() == null) {
      throw new SFException(ErrorCode.INTERNAL_ERROR, "missing timestamp NTZ formatter");
    }
    Timestamp ts = isNull(index) ? null : getTimestamp(index, TimeZone.getDefault(), true);

    return ts == null
        ? null
        : context
            .getTimestampNTZFormatter()
            .format(ts, TimeZone.getTimeZone("UTC"), context.getScale(columnIndex));
  }

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

  @Override
  public Object toObject(int index) throws SFException {
    return toTimestamp(index, TimeZone.getDefault());
  }

  @Override
  public Timestamp toTimestamp(int index, TimeZone tz) throws SFException {
    return isNull(index) ? null : getTimestamp(index, tz, false);
  }

  private Timestamp getTimestamp(int index, TimeZone tz, boolean fromToString) throws SFException {
    if (tz == null) {
      tz = TimeZone.getDefault();
    }
    long val = bigIntVector.getDataBuffer().getLong(index * BigIntVector.TYPE_WIDTH);

    int scale = context.getScale(columnIndex);

    Timestamp ts = ArrowResultUtil.toJavaTimestamp(val, scale);

    // Note: honorClientTZForTimestampNTZ is not enabled for toString method
    if (!fromToString && context.getHonorClientTZForTimestampNTZ()) {
      ts = ArrowResultUtil.moveToTimeZone(ts, NTZ, tz);
    }

    Timestamp adjustedTimestamp = ResultUtil.adjustTimestamp(ts);

    return adjustedTimestamp;
  }

  @Override
  public Date toDate(int index, TimeZone tz, boolean dateFormat) throws SFException {
    return isNull(index)
        ? null
        : new Date(getTimestamp(index, TimeZone.getDefault(), false).getTime());
  }

  @Override
  public Time toTime(int index) throws SFException {
    Timestamp ts = toTimestamp(index, TimeZone.getDefault());
    return ts == null
        ? null
        : new SnowflakeTimeWithTimezone(ts.getTime(), ts.getNanos(), useSessionTimezone);
  }

  @Override
  public boolean toBoolean(int index) throws SFException {
    if (isNull(index)) {
      return false;
    }
    Timestamp val = toTimestamp(index, TimeZone.getDefault());
    throw new SFException(
        ErrorCode.INVALID_VALUE_CONVERT, logicalTypeStr,
        SnowflakeUtil.BOOLEAN_STR, val);
  }
}