cast-functions.cc File Reference

#include "exprs/cast-functions.h"
#include <boost/lexical_cast.hpp>
#include "exprs/anyval-util.h"
#include "exprs/decimal-functions.h"
#include "runtime/timestamp-value.h"
#include "util/string-parser.h"
#include "string-functions.h"
#include "common/names.h"

Include dependency graph for cast-functions.cc:

Go to the source code of this file.

Macros
#define	CAST_FUNCTION(from_type, to_type)
#define	CAST_FROM_STRING(num_type, native_type, string_parser_fn)
#define	CAST_TO_STRING(num_type)
#define	CAST_FLOAT_TO_STRING(float_type, format)
#define	CAST_FROM_TIMESTAMP(to_type)
#define	CAST_FROM_SUBSECOND_TIMESTAMP(to_type)
#define	CAST_TO_TIMESTAMP(from_type)

Functions
	CAST_TO_STRING (BooleanVal)
	CAST_TO_STRING (SmallIntVal)
	CAST_TO_STRING (IntVal)
	CAST_TO_STRING (BigIntVal)
	CAST_FLOAT_TO_STRING (FloatVal,"%.9g")
	CAST_FLOAT_TO_STRING (DoubleVal,"%.17g")
	CAST_FROM_TIMESTAMP (BooleanVal)
	CAST_FROM_TIMESTAMP (TinyIntVal)
	CAST_FROM_TIMESTAMP (SmallIntVal)
	CAST_FROM_TIMESTAMP (IntVal)
	CAST_FROM_TIMESTAMP (BigIntVal)
	CAST_FROM_SUBSECOND_TIMESTAMP (FloatVal)
	CAST_FROM_SUBSECOND_TIMESTAMP (DoubleVal)
	CAST_TO_TIMESTAMP (BooleanVal)
	CAST_TO_TIMESTAMP (TinyIntVal)
	CAST_TO_TIMESTAMP (SmallIntVal)
	CAST_TO_TIMESTAMP (IntVal)
	CAST_TO_TIMESTAMP (BigIntVal)
	CAST_TO_TIMESTAMP (FloatVal)
	CAST_TO_TIMESTAMP (DoubleVal)

Variables
const int	MAX_FLOAT_CHARS = 24

Macro Definition Documentation

#define CAST_FLOAT_TO_STRING	(		float_type,
			format
	)

Value:

StringVal CastFunctions::CastToStringVal(FunctionContext* ctx, const float_type& val) { \
    if (val.is_null) return StringVal::null(); \
    /* val.val could be -nan, return "nan" instead */ \
    if (isnan(val.val)) return StringVal("nan"); \
    /* Add 1 to MAX_FLOAT_CHARS since snprintf adds a trailing '\0' */ \
    StringVal sv(ctx, MAX_FLOAT_CHARS + 1); \
    sv.len = snprintf(reinterpret_cast<char*>(sv.ptr), sv.len, format, val.val); \
    DCHECK_GT(sv.len, 0); \
    DCHECK_LE(sv.len, MAX_FLOAT_CHARS); \
    ColumnType return_type = AnyValUtil::TypeDescToColumnType(ctx->GetReturnType()); \
    AnyValUtil::TruncateIfNecessary(return_type, &sv); \
    return sv; \
  }

Definition at line 122 of file cast-functions.cc.

#define CAST_FROM_STRING	(		num_type,
			native_type,
			string_parser_fn
	)

Value:

num_type CastFunctions::CastTo##num_type(FunctionContext* ctx, const StringVal& val) { \
    if (val.is_null) return num_type::null(); \
    StringParser::ParseResult result; \
    num_type ret; \
    ret.val = StringParser::string_parser_fn<native_type>( \
        reinterpret_cast<char*>(val.ptr), val.len, &result); \
    if (UNLIKELY(result != StringParser::PARSE_SUCCESS)) return num_type::null(); \
    return ret; \
  }

Definition at line 90 of file cast-functions.cc.

#define CAST_FROM_SUBSECOND_TIMESTAMP

(

to_type

)

Value:

to_type CastFunctions::CastTo##to_type( \
      FunctionContext* ctx, const TimestampVal& val) { \
    if (val.is_null) return to_type::null(); \
    TimestampValue tv = TimestampValue::FromTimestampVal(val); \
    if (!tv.HasDate()) return to_type::null(); \
    return to_type(tv.ToSubsecondUnixTime()); \
  }

Definition at line 208 of file cast-functions.cc.

#define CAST_FROM_TIMESTAMP

(

to_type

)

Value:

to_type CastFunctions::CastTo##to_type( \
      FunctionContext* ctx, const TimestampVal& val) { \
    if (val.is_null) return to_type::null(); \
    TimestampValue tv = TimestampValue::FromTimestampVal(val); \
    if (!tv.HasDate()) return to_type::null(); \
    return to_type(tv.ToUnixTime()); \
  }

Definition at line 193 of file cast-functions.cc.

#define CAST_FUNCTION	(		from_type,
			to_type
	)

Value:

to_type CastFunctions::CastTo##to_type(FunctionContext* ctx, const from_type& val) { \
    if (val.is_null) return to_type::null(); \
    return to_type(val.val); \
  }

Definition at line 35 of file cast-functions.cc.

#define CAST_TO_STRING

(

num_type

)

Value:

StringVal CastFunctions::CastToStringVal(FunctionContext* ctx, const num_type& val) { \
    if (val.is_null) return StringVal::null(); \
    ColumnType rtype = AnyValUtil::TypeDescToColumnType(ctx->GetReturnType()); \
    StringVal sv = AnyValUtil::FromString(ctx, lexical_cast<string>(val.val)); \
    AnyValUtil::TruncateIfNecessary(rtype, &sv); \
    return sv; \
  }

Definition at line 108 of file cast-functions.cc.

#define CAST_TO_TIMESTAMP

(

from_type

)

Value:

TimestampVal CastFunctions::CastToTimestampVal(FunctionContext* ctx, \
                                                 const from_type& val) { \
    if (val.is_null) return TimestampVal::null(); \
    TimestampValue timestamp_value(val.val); \
    if (!timestamp_value.HasDate()) return TimestampVal::null(); \
    TimestampVal result; \
    timestamp_value.ToTimestampVal(&result); \
    return result; \
  }

Definition at line 220 of file cast-functions.cc.

Function Documentation

CAST_FLOAT_TO_STRING	(	FloatVal	,
		"%.9g"
	)

CAST_FLOAT_TO_STRING	(	DoubleVal	,
		"%.17g"
	)

CAST_FROM_SUBSECOND_TIMESTAMP

(

FloatVal

)

CAST_FROM_SUBSECOND_TIMESTAMP

(

DoubleVal

)

CAST_FROM_TIMESTAMP

(

BooleanVal

)

CAST_FROM_TIMESTAMP

(

TinyIntVal

)

CAST_FROM_TIMESTAMP

(

SmallIntVal

)

CAST_FROM_TIMESTAMP

(

IntVal

)

CAST_FROM_TIMESTAMP

(

BigIntVal

)

CAST_TO_STRING

(

BooleanVal

)

CAST_TO_STRING

(

SmallIntVal

)

CAST_TO_STRING

(

IntVal

)

CAST_TO_STRING

(

BigIntVal

)

CAST_TO_TIMESTAMP

(

BooleanVal

)

CAST_TO_TIMESTAMP

(

TinyIntVal

)

CAST_TO_TIMESTAMP

(

SmallIntVal

)

CAST_TO_TIMESTAMP

(

IntVal

)

CAST_TO_TIMESTAMP

(

BigIntVal

)

CAST_TO_TIMESTAMP

(

FloatVal

)

CAST_TO_TIMESTAMP

(

DoubleVal

)

Variable Documentation

const int MAX_FLOAT_CHARS = 24

Definition at line 33 of file cast-functions.cc.