TODO: Reconsider whether this class needs to exist. More...

#include <timestamp-functions.h>

Collaboration diagram for impala::TimestampFunctions:

Static Public Member Functions
static void	UnixAndFromUnixPrepare (FunctionContext *context, FunctionContext::FunctionStateScope scope)
	Parse and initialize format string if it is a constant. Raise error if invalid. More...

static void	UnixAndFromUnixClose (FunctionContext *context, FunctionContext::FunctionStateScope scope)

static BigIntVal	Unix (FunctionContext *context, const StringVal &string_val, const StringVal &fmt)
	Parses 'string_val' based on the format 'fmt'. More...

static BigIntVal	Unix (FunctionContext *context, const TimestampVal &tv_val)
	Converts 'tv_val' to a unix time_t. More...

static BigIntVal	Unix (FunctionContext *context)
	Returns the current time. More...

static BigIntVal	UnixFromString (FunctionContext *context, const StringVal &sv)

template<class TIME >
static StringVal	FromUnix (FunctionContext *context, const TIME &unix_time)

template<class TIME >
static StringVal	FromUnix (FunctionContext *context, const TIME &unix_time, const StringVal &fmt)

static TimestampVal	FromUtc (FunctionContext *context, const TimestampVal &ts_val, const StringVal &tz_string_val)
	Convert a timestamp to or from a particular timezone based time. More...

static TimestampVal	ToUtc (FunctionContext *context, const TimestampVal &ts_val, const StringVal &tz_string_val)

static StringVal	DayName (FunctionContext *context, const TimestampVal &dow)
	Returns the day's name as a string (e.g. 'Saturday'). More...

static IntVal	Year (FunctionContext *context, const TimestampVal &ts_val)
	Functions to extract parts of the timestamp, return integers. More...

static IntVal	Month (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	DayOfWeek (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	DayOfMonth (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	DayOfYear (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	WeekOfYear (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	Hour (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	Minute (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	Second (FunctionContext *context, const TimestampVal &ts_val)

static TimestampVal	Now (FunctionContext *context)
	Date/time functions. More...

static StringVal	ToDate (FunctionContext *context, const TimestampVal &ts_val)

static IntVal	DateDiff (FunctionContext *context, const TimestampVal &ts_val1, const TimestampVal &ts_val2)

template<bool ISADD, class VALTYPE , class UNIT >
static TimestampVal	DateAddSub (FunctionContext *context, const TimestampVal &ts_value, const VALTYPE &count)
	Add/sub functions on the date portion. More...

template<bool ISADD, class VALTYPE , class UNIT >
static TimestampVal	TimeAddSub (FunctionContext *context, const TimestampVal &ts_value, const VALTYPE &count)
	Add/sub functions on the time portion. More...

static StringValue *	CheckFormat (StringValue *format)

static void	ReportBadFormat (FunctionContext *context, const StringVal &format, bool is_error)
	Issue a warning for a bad format string. More...

Static Private Attributes
static const char *	MONDAY = "Monday"
	Static result values for DayName() function. More...

static const char *	TUESDAY = "Tuesday"

static const char *	WEDNESDAY = "Wednesday"

static const char *	THURSDAY = "Thursday"

static const char *	FRIDAY = "Friday"

static const char *	SATURDAY = "Saturday"

static const char *	SUNDAY = "Sunday"

Detailed Description

TODO: Reconsider whether this class needs to exist.

Definition at line 40 of file timestamp-functions.h.

Member Function Documentation

static StringValue* impala::TimestampFunctions::CheckFormat ( StringValue * format )

static

Helper function to check date/time format strings. TODO: eventually return format converted from Java to Boost.

template<bool ISADD, class VALTYPE , class UNIT >

template TimestampVal impala::TimestampFunctions::DateAddSub< false, BigIntVal, days >	(	FunctionContext *	context,
		const TimestampVal &	ts_value,
		const VALTYPE &	count
	)

static

Add/sub functions on the date portion.

Definition at line 298 of file timestamp-functions.cc.

References impala_udf::FunctionContext::AddWarning(), impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, impala_udf::TimestampVal::null(), impala::TimestampValue::time(), and impala::TimestampValue::ToTimestampVal().

IntVal impala::TimestampFunctions::DateDiff	(	FunctionContext *	context,
		const TimestampVal &	ts_val1,
		const TimestampVal &	ts_val2
	)

static

Definition at line 334 of file timestamp-functions.cc.

References impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, and impala_udf::IntVal::null().

StringVal impala::TimestampFunctions::DayName	(	FunctionContext *	context,
		const TimestampVal &	dow
	)

static

Returns the day's name as a string (e.g. 'Saturday').

Definition at line 196 of file timestamp-functions.cc.

References impala_udf::AnyVal::is_null, impala_udf::StringVal::null(), and impala_udf::IntVal::val.

IntVal impala::TimestampFunctions::DayOfMonth	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 236 of file timestamp-functions.cc.

References impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, and impala_udf::IntVal::null().

IntVal impala::TimestampFunctions::DayOfWeek	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 227 of file timestamp-functions.cc.

References impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, and impala_udf::IntVal::null().

IntVal impala::TimestampFunctions::DayOfYear	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 244 of file timestamp-functions.cc.

References impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, and impala_udf::IntVal::null().

template<class TIME >

StringVal impala::TimestampFunctions::FromUnix	(	FunctionContext *	context,
		const TIME &	unix_time
	)

static

Return a timestamp string from a unix time_t Optional second argument is the format of the string. TIME is the integer type of the unix time argument.

Definition at line 103 of file timestamp-functions.cc.

References impala_udf::StringVal::null().

template<class TIME >

StringVal impala::TimestampFunctions::FromUnix	(	FunctionContext *	context,
		const TIME &	unix_time,
		const StringVal &	fmt
	)

static

Definition at line 110 of file timestamp-functions.cc.

References impala::DateTimeFormatContext::fmt_out_len, impala::TimestampValue::Format(), impala_udf::FunctionContext::GetFunctionState(), impala_udf::AnyVal::is_null, impala_udf::FunctionContext::IsArgConstant(), impala_udf::StringVal::len, impala_udf::StringVal::null(), impala_udf::StringVal::ptr, impala::DateTimeFormatContext::Reset(), and impala_udf::FunctionContext::THREAD_LOCAL.

TimestampVal impala::TimestampFunctions::FromUtc	(	FunctionContext *	context,
		const TimestampVal &	ts_val,
		const StringVal &	tz_string_val
	)

static

Convert a timestamp to or from a particular timezone based time.

Definition at line 349 of file timestamp-functions.cc.

References impala_udf::FunctionContext::AddWarning(), impala::StringValue::DebugString(), impala::TimestampValue::HasDateOrTime(), impala_udf::AnyVal::is_null, impala_udf::TimestampVal::null(), impala::TimestampValue::ToPtime(), and impala::TimestampValue::ToTimestampVal().

IntVal impala::TimestampFunctions::Hour	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 260 of file timestamp-functions.cc.

References impala::TimestampValue::HasTime(), impala_udf::AnyVal::is_null, impala_udf::IntVal::null(), and impala::TimestampValue::time().

IntVal impala::TimestampFunctions::Minute	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 267 of file timestamp-functions.cc.

References impala::TimestampValue::HasTime(), impala_udf::AnyVal::is_null, impala_udf::IntVal::null(), and impala::TimestampValue::time().

IntVal impala::TimestampFunctions::Month	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 219 of file timestamp-functions.cc.

References impala::TimestampValue::date(), impala::TimestampValue::HasDate(), impala_udf::AnyVal::is_null, and impala_udf::IntVal::null().

TimestampVal impala::TimestampFunctions::Now ( FunctionContext * context )

static

Date/time functions.

Definition at line 281 of file timestamp-functions.cc.

References impala::TimestampValue::HasDateOrTime(), impala_udf::FunctionContext::impl(), impala::RuntimeState::now(), impala_udf::TimestampVal::null(), impala::FunctionContextImpl::state(), and impala::TimestampValue::ToTimestampVal().

void impala::TimestampFunctions::ReportBadFormat	(	FunctionContext *	context,
		const StringVal &	format,
		bool	is_error
	)

static

Issue a warning for a bad format string.

Definition at line 180 of file timestamp-functions.cc.

References impala_udf::FunctionContext::AddWarning(), impala::StringValue::DebugString(), impala_udf::AnyVal::is_null, impala_udf::StringVal::len, and impala_udf::FunctionContext::SetError().

IntVal impala::TimestampFunctions::Second	(	FunctionContext *	context,
		const TimestampVal &	ts_val
	)

static

Definition at line 274 of file timestamp-functions.cc.

References impala::TimestampValue::HasTime(), impala_udf::AnyVal::is_null, impala_udf::IntVal::null(), and impala::TimestampValue::time().

template<bool ISADD, class VALTYPE , class UNIT >

template TimestampVal impala::TimestampFunctions::TimeAddSub< false, BigIntVal, nanoseconds >	(	FunctionContext *	context,
		const TimestampVal &	ts_value,
		const VALTYPE &	count
	)