net.snowflake.client.core

Class ResultUtil

java.lang.Object

net.snowflake.client.core.ResultUtil

public class ResultUtil
extends Object

Created by jhuang on 2/1/16.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ResultUtil.ResultInput
static class	ResultUtil.ResultOutput

Constructor Summary

Constructors

Constructor and Description
ResultUtil()

Method Summary

Modifier and Type	Method and Description
static Date	adjustDate(Date date) Adjust date for before 1582-10-05
static Timestamp	adjustTimestamp(Timestamp timestamp) Adjust timestamp for dates before 1582-10-05
static long	calculateMilliToAdjust(Date date) For dates before 1582-10-05, calculate the number of millis to adjust.
static int	calculateUpdateCount(ResultSet resultSet, long statementTypeId)
static boolean	getBoolean(String str) Converst snowflake bool to java boolean
static String	getBooleanAsString(boolean bool) Convert a boolean to a string
static Date	getDate(String str, TimeZone tz, SFSession session) Convert a date internal object to a Date object in specified timezone.
static String	getDateAsString(Date date, net.snowflake.common.core.SnowflakeDateTimeFormat dateFormatter) Convert a date value into a string
static net.snowflake.common.core.SFTime	getSFTime(String obj, int scale, SFSession session) Convert a time internal value (scaled number of seconds + fractional seconds) into an SFTime.
static String	getSFTimeAsString(net.snowflake.common.core.SFTime sft, int scale, net.snowflake.common.core.SnowflakeDateTimeFormat timeFormatter) Convert a time value into a string
static net.snowflake.common.core.SFTimestamp	getSFTimestamp(String timestampStr, int scale, int internalColumnType, long resultVersion, TimeZone sessionTZ, SFSession session) Convert a timestamp internal value (scaled number of seconds + fractional seconds) into a SFTimestamp.
static String	getSFTimestampAsString(net.snowflake.common.core.SFTimestamp sfTS, int columnType, int scale, net.snowflake.common.core.SnowflakeDateTimeFormat timestampNTZFormatter, net.snowflake.common.core.SnowflakeDateTimeFormat timestampLTZFormatter, net.snowflake.common.core.SnowflakeDateTimeFormat timestampTZFormatter, SFSession session) Convert a SFTimestamp to a string value.
static int	listSearchCaseInsensitive(List<String> source, String target) Given a list of String, do a case insensitive search for target string Used by resultsetMetadata to search for target column name
static ResultUtil.ResultOutput	processResult(ResultUtil.ResultInput resultData) A common helper to process result response

Methods inherited from class java.lang.Object

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

Constructor Detail

ResultUtil

public ResultUtil()

Method Detail

processResult

public static ResultUtil.ResultOutput processResult(ResultUtil.ResultInput resultData)
                                             throws SnowflakeSQLException

A common helper to process result response

Parameters:

resultData - wrapper object over simple json result

Returns:

processed result output

Throws:

SnowflakeSQLException - if failed to get number of columns

adjustTimestamp

public static Timestamp adjustTimestamp(Timestamp timestamp)

Adjust timestamp for dates before 1582-10-05

Parameters:

timestamp - needs to be adjusted

Returns:

adjusted timestamp

calculateMilliToAdjust

public static long calculateMilliToAdjust(Date date)

For dates before 1582-10-05, calculate the number of millis to adjust.

Parameters:

date - date before 1582-10-05

Returns:

millis needs to be adjusted

getSFTimestamp

public static net.snowflake.common.core.SFTimestamp getSFTimestamp(String timestampStr,
                                                                   int scale,
                                                                   int internalColumnType,
                                                                   long resultVersion,
                                                                   TimeZone sessionTZ,
                                                                   SFSession session)
                                                            throws SFException

Convert a timestamp internal value (scaled number of seconds + fractional seconds) into a SFTimestamp.

Parameters:

timestampStr - timestamp object

scale - timestamp scale

internalColumnType - snowflake timestamp type

resultVersion - For new result version, timestamp with timezone is formatted as the seconds since epoch with fractional part in the decimal followed by time zone index. E.g.: "123.456 1440". Here 123.456 is the * number of seconds since epoch and 1440 is the timezone index.

sessionTZ - session timezone

session - session object

Returns:

converted snowflake timestamp object

Throws:

SFException - if timestampStr is an invalid timestamp

getSFTime

public static net.snowflake.common.core.SFTime getSFTime(String obj,
                                                         int scale,
                                                         SFSession session)
                                                  throws SFException

Convert a time internal value (scaled number of seconds + fractional seconds) into an SFTime. Example: getSFTime("123.456", 5) returns an SFTime for 00:02:03.45600.

Parameters:

obj - time object

scale - time scale

session - session object

Returns:

snowflake time object

Throws:

SFException - if time is invalid

getSFTimeAsString

public static String getSFTimeAsString(net.snowflake.common.core.SFTime sft,
                                       int scale,
                                       net.snowflake.common.core.SnowflakeDateTimeFormat timeFormatter)

Convert a time value into a string

Parameters:

sft - snowflake time object

scale - time scale

timeFormatter - time formatter

Returns:

time in string

getBooleanAsString

public static String getBooleanAsString(boolean bool)

Convert a boolean to a string

Parameters:

bool - boolean

Returns:

boolean in string

getSFTimestampAsString

public static String getSFTimestampAsString(net.snowflake.common.core.SFTimestamp sfTS,
                                            int columnType,
                                            int scale,
                                            net.snowflake.common.core.SnowflakeDateTimeFormat timestampNTZFormatter,
                                            net.snowflake.common.core.SnowflakeDateTimeFormat timestampLTZFormatter,
                                            net.snowflake.common.core.SnowflakeDateTimeFormat timestampTZFormatter,
                                            SFSession session)
                                     throws SFException

Convert a SFTimestamp to a string value.

Parameters:

sfTS - snowflake timestamp object

columnType - internal snowflake t

scale - timestamp scale

timestampNTZFormatter - snowflake timestamp ntz format

timestampLTZFormatter - snowflake timestamp ltz format

timestampTZFormatter - snowflake timestamp tz format

session - session object

Returns:

timestamp in string in desired format

Throws:

SFException - timestamp format is missing

getDateAsString

public static String getDateAsString(Date date,
                                     net.snowflake.common.core.SnowflakeDateTimeFormat dateFormatter)

Convert a date value into a string

Parameters:

date - date will be converted

dateFormatter - date format

Returns:

date in string

adjustDate

public static Date adjustDate(Date date)

Adjust date for before 1582-10-05

Parameters:

date - date before 1582-10-05

Returns:

adjusted date

getDate

public static Date getDate(String str,
                           TimeZone tz,
                           SFSession session)
                    throws SFException

Convert a date internal object to a Date object in specified timezone.

Parameters:

str - snowflake date object

tz - timezone we want convert to

session - snowflake session object

Returns:

java date object

Throws:

SFException - if date is invalid

getBoolean

public static boolean getBoolean(String str)

Converst snowflake bool to java boolean

Parameters:

str - boolean type in string representation

Returns:

true if the value indicates true otherwise false

calculateUpdateCount

public static int calculateUpdateCount(ResultSet resultSet,
                                       long statementTypeId)
                                throws SQLException

Throws:

SQLException

listSearchCaseInsensitive

public static int listSearchCaseInsensitive(List<String> source,
                                            String target)

Given a list of String, do a case insensitive search for target string Used by resultsetMetadata to search for target column name

Parameters:

source - source string list

target - target string to match

Returns:

index in the source string list that matches the target string