Package net.snowflake.client.core.arrow

Class ArrowResultUtil

java.lang.Object

net.snowflake.client.core.arrow.ArrowResultUtil

public class ArrowResultUtil
extends Object

Result utility methods specifically for Arrow format

Field Summary

Fields

Modifier and Type	Field	Description
static int	MAX_SCALE_POWERS_OF_10

Constructor Summary

Constructors

Constructor	Description
ArrowResultUtil()

Method Summary

Modifier and Type	Method	Description
static Timestamp	createTimestamp(long seconds, int fraction, TimeZone timezone, boolean useSessionTz)	create Java timestamp using seconds since epoch and fraction in nanoseconds For example, 1232.234 represents as epoch = 1232 and fraction = 234,000,000 For example, -1232.234 represents as epoch = -1233 and fraction = 766,000,000 For example, -0.13 represents as epoch = -1 and fraction = 870,000,000
static Date	getDate(int day)	new method to get Date from integer
static Date	getDate(int day, TimeZone oldTz, TimeZone newTz)	Method to get Date from integer using timezone offsets
static String	getStringFormat(int scale)
static boolean	isTimestampOverflow(long seconds)	check whether the input seconds out of the scope of Java timestamp
static Timestamp	moveToTimeZone(Timestamp ts, TimeZone oldTZ, TimeZone newTZ)	move the input timestamp form oldTZ to newTZ
static long	powerOfTen(int pow)
static Timestamp	toJavaTimestamp(long epoch, int scale)	generate Java Timestamp object
static Timestamp	toJavaTimestamp(long epoch, int scale, TimeZone sessionTimezone, boolean useSessionTimezone)	generate Java Timestamp object

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_SCALE_POWERS_OF_10

public static final int MAX_SCALE_POWERS_OF_10

See Also:

Constant Field Values

Constructor Detail

ArrowResultUtil

public ArrowResultUtil()

Method Detail

powerOfTen

public static long powerOfTen(int pow)

getStringFormat

public static String getStringFormat(int scale)

getDate

public static Date getDate(int day)

new method to get Date from integer

Parameters:

day - The day to convert.

Returns:

Date

getDate

public static Date getDate(int day,
                           TimeZone oldTz,
                           TimeZone newTz)
                    throws SFException

Method to get Date from integer using timezone offsets

Parameters:

day - The day to convert.

oldTz - The old timezone.

newTz - The new timezone.

Returns:

Date

Throws:

SFException - if date value is invalid

moveToTimeZone

public static Timestamp moveToTimeZone(Timestamp ts,
                                       TimeZone oldTZ,
                                       TimeZone newTZ)

move the input timestamp form oldTZ to newTZ

Parameters:

ts - Timestamp

oldTZ - Old timezone

newTZ - New timezone

Returns:

timestamp in newTZ

toJavaTimestamp

public static Timestamp toJavaTimestamp(long epoch,
                                        int scale)

generate Java Timestamp object

Parameters:

epoch - the value since epoch time

scale - the scale of the value

Returns:

Timestamp

toJavaTimestamp

@SnowflakeJdbcInternalApi
public static Timestamp toJavaTimestamp(long epoch,
                                        int scale,
                                        TimeZone sessionTimezone,
                                        boolean useSessionTimezone)

generate Java Timestamp object

Parameters:

epoch - the value since epoch time

scale - the scale of the value

sessionTimezone - the session timezone

useSessionTimezone - should the session timezone be used

Returns:

Timestamp

isTimestampOverflow

public static boolean isTimestampOverflow(long seconds)

check whether the input seconds out of the scope of Java timestamp

Parameters:

seconds - long value to check

Returns:

true if value is out of the scope of Java timestamp.

createTimestamp

public static Timestamp createTimestamp(long seconds,
                                        int fraction,
                                        TimeZone timezone,
                                        boolean useSessionTz)

create Java timestamp using seconds since epoch and fraction in nanoseconds For example, 1232.234 represents as epoch = 1232 and fraction = 234,000,000 For example, -1232.234 represents as epoch = -1233 and fraction = 766,000,000 For example, -0.13 represents as epoch = -1 and fraction = 870,000,000

Parameters:

seconds - seconds value

fraction - fraction

timezone - The timezone being used for the toString() formatting

useSessionTz - boolean useSessionTz

Returns:

java timestamp object