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common.go
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common.go
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package common
import (
"bytes"
"encoding/gob"
"errors"
"fmt"
"reflect"
"strconv"
"strings"
"github.com/apache/arrow/go/v12/arrow"
"github.com/apache/arrow/go/v12/arrow/array"
"github.com/AppliedIntuition/parquet-go/parquet"
)
// `parquet:"name=Name, type=FIXED_LEN_BYTE_ARRAY, length=12"`
type Tag struct {
InName string
ExName string
Type string
KeyType string
ValueType string
ConvertedType string
KeyConvertedType string
ValueConvertedType string
Length int32
KeyLength int32
ValueLength int32
Scale int32
KeyScale int32
ValueScale int32
Precision int32
KeyPrecision int32
ValuePrecision int32
IsAdjustedToUTC bool
KeyIsAdjustedToUTC bool
ValueIsAdjustedToUTC bool
FieldID int32
KeyFieldID int32
ValueFieldID int32
Encoding parquet.Encoding
KeyEncoding parquet.Encoding
ValueEncoding parquet.Encoding
OmitStats bool
KeyOmitStats bool
ValueOmitStats bool
RepetitionType parquet.FieldRepetitionType
KeyRepetitionType parquet.FieldRepetitionType
ValueRepetitionType parquet.FieldRepetitionType
LogicalTypeFields map[string]string
KeyLogicalTypeFields map[string]string
ValueLogicalTypeFields map[string]string
}
func NewTag() *Tag {
return &Tag{
LogicalTypeFields: make(map[string]string),
KeyLogicalTypeFields: make(map[string]string),
ValueLogicalTypeFields: make(map[string]string),
}
}
func StringToTag(tag string) (*Tag, error) {
mp := NewTag()
tagStr := strings.Replace(tag, "\t", "", -1)
tags := strings.Split(tagStr, ",")
for _, tag := range tags {
tag = strings.TrimSpace(tag)
kv := strings.SplitN(tag, "=", 2)
if len(kv) != 2 {
return nil, fmt.Errorf("expect 'key=value' but got '%s'", tag)
}
key := kv[0]
key = strings.ToLower(key)
key = strings.TrimSpace(key)
val := kv[1]
val = strings.TrimSpace(val)
var err error
switch key {
case "type":
mp.Type = val
case "keytype":
mp.KeyType = val
case "valuetype":
mp.ValueType = val
case "convertedtype":
mp.ConvertedType = val
case "keyconvertedtype":
mp.KeyConvertedType = val
case "valueconvertedtype":
mp.ValueConvertedType = val
case "length":
if mp.Length, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse length: %s", err.Error())
}
case "keylength":
if mp.KeyLength, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse keylength: %s", err.Error())
}
case "valuelength":
if mp.ValueLength, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse valuelength: %s", err.Error())
}
case "scale":
if mp.Scale, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse scale: %s", err.Error())
}
case "keyscale":
if mp.KeyScale, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse keyscale: %s", err.Error())
}
case "valuescale":
if mp.ValueScale, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse valuescale: %s", err.Error())
}
case "precision":
if mp.Precision, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse precision: %s", err.Error())
}
case "keyprecision":
if mp.KeyPrecision, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse keyprecision: %s", err.Error())
}
case "valueprecision":
if mp.ValuePrecision, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse valueprecision: %s", err.Error())
}
case "fieldid":
if mp.FieldID, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse fieldid: %s", err.Error())
}
case "keyfieldid":
if mp.KeyFieldID, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse keyfieldid: %s", err.Error())
}
case "valuefieldid":
if mp.ValueFieldID, err = Str2Int32(val); err != nil {
return nil, fmt.Errorf("failed to parse valuefieldid: %s", err.Error())
}
case "isadjustedtoutc":
if mp.IsAdjustedToUTC, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse isadjustedtoutc: %s", err.Error())
}
case "keyisadjustedtoutc":
if mp.KeyIsAdjustedToUTC, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse keyisadjustedtoutc: %s", err.Error())
}
case "valueisadjustedtoutc":
if mp.ValueIsAdjustedToUTC, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse valueisadjustedtoutc: %s", err.Error())
}
case "name":
if mp.InName == "" {
mp.InName = StringToVariableName(val)
}
mp.ExName = val
case "inname":
mp.InName = val
case "omitstats":
if mp.OmitStats, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse omitstats: %s", err.Error())
}
case "keyomitstats":
if mp.KeyOmitStats, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse keyomitstats: %s", err.Error())
}
case "valueomitstats":
if mp.ValueOmitStats, err = Str2Bool(val); err != nil {
return nil, fmt.Errorf("failed to parse valueomitstats: %s", err.Error())
}
case "repetitiontype":
switch strings.ToLower(val) {
case "repeated":
mp.RepetitionType = parquet.FieldRepetitionType_REPEATED
case "required":
mp.RepetitionType = parquet.FieldRepetitionType_REQUIRED
case "optional":
mp.RepetitionType = parquet.FieldRepetitionType_OPTIONAL
default:
return nil, fmt.Errorf("unknown repetitiontype: '%v'", val)
}
case "keyrepetitiontype":
switch strings.ToLower(val) {
case "repeated":
mp.KeyRepetitionType = parquet.FieldRepetitionType_REPEATED
case "required":
mp.KeyRepetitionType = parquet.FieldRepetitionType_REQUIRED
case "optional":
mp.KeyRepetitionType = parquet.FieldRepetitionType_OPTIONAL
default:
return nil, fmt.Errorf("unknown keyrepetitiontype: '%v'", val)
}
case "valuerepetitiontype":
switch strings.ToLower(val) {
case "repeated":
mp.ValueRepetitionType = parquet.FieldRepetitionType_REPEATED
case "required":
mp.ValueRepetitionType = parquet.FieldRepetitionType_REQUIRED
case "optional":
mp.ValueRepetitionType = parquet.FieldRepetitionType_OPTIONAL
default:
return nil, fmt.Errorf("unknown valuerepetitiontype: '%v'", val)
}
case "encoding":
switch strings.ToLower(val) {
case "plain":
mp.Encoding = parquet.Encoding_PLAIN
case "rle":
mp.Encoding = parquet.Encoding_RLE
case "delta_binary_packed":
mp.Encoding = parquet.Encoding_DELTA_BINARY_PACKED
case "delta_length_byte_array":
mp.Encoding = parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY
case "delta_byte_array":
mp.Encoding = parquet.Encoding_DELTA_BYTE_ARRAY
case "plain_dictionary":
mp.Encoding = parquet.Encoding_PLAIN_DICTIONARY
case "rle_dictionary":
mp.Encoding = parquet.Encoding_RLE_DICTIONARY
case "byte_stream_split":
mp.Encoding = parquet.Encoding_BYTE_STREAM_SPLIT
default:
return nil, fmt.Errorf("unknown encoding type: '%v'", val)
}
case "keyencoding":
switch strings.ToLower(val) {
case "rle":
mp.KeyEncoding = parquet.Encoding_RLE
case "delta_binary_packed":
mp.KeyEncoding = parquet.Encoding_DELTA_BINARY_PACKED
case "delta_length_byte_array":
mp.KeyEncoding = parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY
case "delta_byte_array":
mp.KeyEncoding = parquet.Encoding_DELTA_BYTE_ARRAY
case "plain_dictionary":
mp.KeyEncoding = parquet.Encoding_PLAIN_DICTIONARY
case "byte_stream_split":
mp.KeyEncoding = parquet.Encoding_BYTE_STREAM_SPLIT
default:
return nil, fmt.Errorf("unknown keyencoding type: '%v'", val)
}
case "valueencoding":
switch strings.ToLower(val) {
case "rle":
mp.ValueEncoding = parquet.Encoding_RLE
case "delta_binary_packed":
mp.ValueEncoding = parquet.Encoding_DELTA_BINARY_PACKED
case "delta_length_byte_array":
mp.ValueEncoding = parquet.Encoding_DELTA_LENGTH_BYTE_ARRAY
case "delta_byte_array":
mp.ValueEncoding = parquet.Encoding_DELTA_BYTE_ARRAY
case "plain_dictionary":
mp.ValueEncoding = parquet.Encoding_PLAIN_DICTIONARY
case "byte_stream_split":
mp.ValueEncoding = parquet.Encoding_BYTE_STREAM_SPLIT
default:
return nil, fmt.Errorf("unknown valueencoding type: '%v'", val)
}
default:
if strings.HasPrefix(key, "logicaltype") {
mp.LogicalTypeFields[key] = val
} else if strings.HasPrefix(key, "keylogicaltype") {
newKey := key[3:]
mp.KeyLogicalTypeFields[newKey] = val
} else if strings.HasPrefix(key, "valuelogicaltype") {
newKey := key[5:]
mp.ValueLogicalTypeFields[newKey] = val
} else {
return nil, fmt.Errorf("unrecognized tag '%v'", key)
}
}
}
return mp, nil
}
func NewSchemaElementFromTagMap(info *Tag) (*parquet.SchemaElement, error) {
schema := parquet.NewSchemaElement()
schema.Name = info.InName
schema.TypeLength = &info.Length
schema.Scale = &info.Scale
schema.Precision = &info.Precision
schema.FieldID = &info.FieldID
schema.RepetitionType = &info.RepetitionType
schema.NumChildren = nil
if t, err := parquet.TypeFromString(info.Type); err == nil {
schema.Type = &t
} else {
return nil, fmt.Errorf("type " + info.Type + ": " + err.Error())
}
if ct, err := parquet.ConvertedTypeFromString(info.ConvertedType); err == nil {
schema.ConvertedType = &ct
}
var logicalType *parquet.LogicalType
var err error
if len(info.LogicalTypeFields) > 0 {
logicalType, err = NewLogicalTypeFromFieldsMap(info.LogicalTypeFields)
if err != nil {
return nil, fmt.Errorf("failed to create logicaltype from field map: %s", err.Error())
}
} else {
logicalType = NewLogicalTypeFromConvertedType(schema, info)
}
schema.LogicalType = logicalType
return schema, nil
}
func NewLogicalTypeFromFieldsMap(mp map[string]string) (*parquet.LogicalType, error) {
if val, ok := mp["logicaltype"]; !ok {
return nil, errors.New("does not have logicaltype")
} else {
var err error
logicalType := parquet.NewLogicalType()
switch val {
case "STRING":
logicalType.STRING = parquet.NewStringType()
case "MAP":
logicalType.MAP = parquet.NewMapType()
case "LIST":
logicalType.LIST = parquet.NewListType()
case "ENUM":
logicalType.ENUM = parquet.NewEnumType()
case "DECIMAL":
logicalType.DECIMAL = parquet.NewDecimalType()
logicalType.DECIMAL.Precision, err = Str2Int32(mp["logicaltype.precision"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.precision as int32: %s", err.Error())
}
logicalType.DECIMAL.Scale, err = Str2Int32(mp["logicaltype.scale"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.scale as int32: %s", err.Error())
}
case "DATE":
logicalType.DATE = parquet.NewDateType()
case "TIME":
logicalType.TIME = parquet.NewTimeType()
logicalType.TIME.IsAdjustedToUTC, err = Str2Bool(mp["logicaltype.isadjustedtoutc"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.isadjustedtoutc as boolean: %s", err.Error())
}
switch mp["logicaltype.unit"] {
case "MILLIS":
logicalType.TIME.Unit = parquet.NewTimeUnit()
logicalType.TIME.Unit.MILLIS = parquet.NewMilliSeconds()
case "MICROS":
logicalType.TIME.Unit = parquet.NewTimeUnit()
logicalType.TIME.Unit.MICROS = parquet.NewMicroSeconds()
case "NANOS":
logicalType.TIME.Unit = parquet.NewTimeUnit()
logicalType.TIME.Unit.NANOS = parquet.NewNanoSeconds()
default:
return nil, fmt.Errorf("logicaltype time error, unknown unit: %s", mp["logicaltype.unit"])
}
case "TIMESTAMP":
logicalType.TIMESTAMP = parquet.NewTimestampType()
logicalType.TIMESTAMP.IsAdjustedToUTC, err = Str2Bool(mp["logicaltype.isadjustedtoutc"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.isadjustedtoutc as boolean: %s", err.Error())
}
switch mp["logicaltype.unit"] {
case "MILLIS":
logicalType.TIMESTAMP.Unit = parquet.NewTimeUnit()
logicalType.TIMESTAMP.Unit.MILLIS = parquet.NewMilliSeconds()
case "MICROS":
logicalType.TIMESTAMP.Unit = parquet.NewTimeUnit()
logicalType.TIMESTAMP.Unit.MICROS = parquet.NewMicroSeconds()
case "NANOS":
logicalType.TIMESTAMP.Unit = parquet.NewTimeUnit()
logicalType.TIMESTAMP.Unit.NANOS = parquet.NewNanoSeconds()
default:
return nil, fmt.Errorf("logicaltype time error, unknown unit: %s", mp["logicaltype.unit"])
}
case "INTEGER":
logicalType.INTEGER = parquet.NewIntType()
bitWidth, err := Str2Int32(mp["logicaltype.bitwidth"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.bitwidth as int32: %s", err.Error())
}
logicalType.INTEGER.BitWidth = int8(bitWidth)
logicalType.INTEGER.IsSigned, err = Str2Bool(mp["logicaltype.issigned"])
if err != nil {
return nil, fmt.Errorf("cannot parse logicaltype.issigned as boolean: %s", err.Error())
}
case "JSON":
logicalType.JSON = parquet.NewJsonType()
case "BSON":
logicalType.BSON = parquet.NewBsonType()
case "UUID":
logicalType.UUID = parquet.NewUUIDType()
default:
return nil, fmt.Errorf("unknow logicaltype: " + val)
}
return logicalType, nil
}
}
func NewLogicalTypeFromConvertedType(schemaElement *parquet.SchemaElement, info *Tag) *parquet.LogicalType {
_, ct := schemaElement.Type, schemaElement.ConvertedType
if ct == nil {
return nil
}
logicalType := parquet.NewLogicalType()
switch *ct {
case parquet.ConvertedType_INT_8:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 8
logicalType.INTEGER.IsSigned = true
case parquet.ConvertedType_INT_16:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 16
logicalType.INTEGER.IsSigned = true
case parquet.ConvertedType_INT_32:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 32
logicalType.INTEGER.IsSigned = true
case parquet.ConvertedType_INT_64:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 64
logicalType.INTEGER.IsSigned = true
case parquet.ConvertedType_UINT_8:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 8
logicalType.INTEGER.IsSigned = false
case parquet.ConvertedType_UINT_16:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 16
logicalType.INTEGER.IsSigned = false
case parquet.ConvertedType_UINT_32:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 32
logicalType.INTEGER.IsSigned = false
case parquet.ConvertedType_UINT_64:
logicalType.INTEGER = parquet.NewIntType()
logicalType.INTEGER.BitWidth = 64
logicalType.INTEGER.IsSigned = false
case parquet.ConvertedType_DECIMAL:
logicalType.DECIMAL = parquet.NewDecimalType()
logicalType.DECIMAL.Precision = info.Precision
logicalType.DECIMAL.Scale = info.Scale
case parquet.ConvertedType_DATE:
logicalType.DATE = parquet.NewDateType()
case parquet.ConvertedType_TIME_MICROS:
logicalType.TIME = parquet.NewTimeType()
logicalType.TIME.IsAdjustedToUTC = info.IsAdjustedToUTC
logicalType.TIME.Unit = parquet.NewTimeUnit()
logicalType.TIME.Unit.MICROS = parquet.NewMicroSeconds()
case parquet.ConvertedType_TIME_MILLIS:
logicalType.TIME = parquet.NewTimeType()
logicalType.TIME.IsAdjustedToUTC = info.IsAdjustedToUTC
logicalType.TIME.Unit = parquet.NewTimeUnit()
logicalType.TIME.Unit.MILLIS = parquet.NewMilliSeconds()
case parquet.ConvertedType_TIMESTAMP_MICROS:
logicalType.TIMESTAMP = parquet.NewTimestampType()
logicalType.TIMESTAMP.IsAdjustedToUTC = info.IsAdjustedToUTC
logicalType.TIMESTAMP.Unit = parquet.NewTimeUnit()
logicalType.TIMESTAMP.Unit.MICROS = parquet.NewMicroSeconds()
case parquet.ConvertedType_TIMESTAMP_MILLIS:
logicalType.TIMESTAMP = parquet.NewTimestampType()
logicalType.TIMESTAMP.IsAdjustedToUTC = info.IsAdjustedToUTC
logicalType.TIMESTAMP.Unit = parquet.NewTimeUnit()
logicalType.TIMESTAMP.Unit.MILLIS = parquet.NewMilliSeconds()
case parquet.ConvertedType_BSON:
logicalType.BSON = parquet.NewBsonType()
case parquet.ConvertedType_ENUM:
logicalType.ENUM = parquet.NewEnumType()
case parquet.ConvertedType_JSON:
logicalType.JSON = parquet.NewJsonType()
case parquet.ConvertedType_LIST:
logicalType.LIST = parquet.NewListType()
case parquet.ConvertedType_MAP:
logicalType.MAP = parquet.NewMapType()
case parquet.ConvertedType_UTF8:
logicalType.STRING = parquet.NewStringType()
default:
return nil
}
return logicalType
}
func DeepCopy(src, dst interface{}) {
var buf bytes.Buffer
gob.NewEncoder(&buf).Encode(src)
gob.NewDecoder(bytes.NewBuffer(buf.Bytes())).Decode(dst)
return
}
// Get key tag map for map
func GetKeyTagMap(src *Tag) *Tag {
res := NewTag()
res.InName = "Key"
res.ExName = "key"
res.Type = src.KeyType
res.ConvertedType = src.KeyConvertedType
res.IsAdjustedToUTC = src.KeyIsAdjustedToUTC
res.Length = src.KeyLength
res.Scale = src.KeyScale
res.Precision = src.KeyPrecision
res.FieldID = src.KeyFieldID
res.Encoding = src.KeyEncoding
res.OmitStats = src.KeyOmitStats
res.RepetitionType = parquet.FieldRepetitionType_REQUIRED
return res
}
// Get value tag map for map
func GetValueTagMap(src *Tag) *Tag {
res := NewTag()
res.InName = "Value"
res.ExName = "value"
res.Type = src.ValueType
res.ConvertedType = src.ValueConvertedType
res.IsAdjustedToUTC = src.ValueIsAdjustedToUTC
res.Length = src.ValueLength
res.Scale = src.ValueScale
res.Precision = src.ValuePrecision
res.FieldID = src.ValueFieldID
res.Encoding = src.ValueEncoding
res.OmitStats = src.ValueOmitStats
res.RepetitionType = src.ValueRepetitionType
return res
}
// Convert string to a golang variable name
func StringToVariableName(str string) string {
ln := len(str)
if ln <= 0 {
return str
}
name := ""
for i := 0; i < ln; i++ {
c := str[i]
if (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_' {
name += string(c)
} else {
name += strconv.Itoa(int(c))
}
}
name = HeadToUpper(name)
return name
}
// Convert the first letter of a string to uppercase
func HeadToUpper(str string) string {
ln := len(str)
if ln <= 0 {
return str
}
c := str[0]
if (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') {
return strings.ToUpper(str[0:1]) + str[1:]
}
//handle non-alpha prefix such as "_"
return "PARGO_PREFIX_" + str
}
func CmpIntBinary(as string, bs string, order string, signed bool) bool {
abs, bbs := []byte(as), []byte(bs)
la, lb := len(abs), len(bbs)
if order == "LittleEndian" {
for i, j := 0, len(abs)-1; i < j; i, j = i+1, j-1 {
abs[i], abs[j] = abs[j], abs[i]
}
for i, j := 0, len(bbs)-1; i < j; i, j = i+1, j-1 {
bbs[i], bbs[j] = bbs[j], bbs[i]
}
}
if !signed {
if la < lb {
abs = append(make([]byte, lb-la), abs...)
} else if lb < la {
bbs = append(make([]byte, la-lb), bbs...)
}
} else {
if la < lb {
sb := (abs[0] >> 7) & 1
pre := make([]byte, lb-la)
if sb == 1 {
for i := 0; i < lb-la; i++ {
pre[i] = byte(0xFF)
}
}
abs = append(pre, abs...)
} else if la > lb {
sb := (bbs[0] >> 7) & 1
pre := make([]byte, la-lb)
if sb == 1 {
for i := 0; i < la-lb; i++ {
pre[i] = byte(0xFF)
}
}
bbs = append(pre, bbs...)
}
asb, bsb := (abs[0]>>7)&1, (bbs[0]>>7)&1
if asb < bsb {
return false
} else if asb > bsb {
return true
}
}
for i := 0; i < len(abs); i++ {
if abs[i] < bbs[i] {
return true
} else if abs[i] > bbs[i] {
return false
}
}
return false
}
func FindFuncTable(pT *parquet.Type, cT *parquet.ConvertedType, logT *parquet.LogicalType) FuncTable {
if cT == nil && logT == nil {
if *pT == parquet.Type_BOOLEAN {
return boolFuncTable{}
} else if *pT == parquet.Type_INT32 {
return int32FuncTable{}
} else if *pT == parquet.Type_INT64 {
return int64FuncTable{}
} else if *pT == parquet.Type_INT96 {
return int96FuncTable{}
} else if *pT == parquet.Type_FLOAT {
return float32FuncTable{}
} else if *pT == parquet.Type_DOUBLE {
return float64FuncTable{}
} else if *pT == parquet.Type_BYTE_ARRAY {
return stringFuncTable{}
} else if *pT == parquet.Type_FIXED_LEN_BYTE_ARRAY {
return stringFuncTable{}
}
}
if cT != nil {
if *cT == parquet.ConvertedType_UTF8 || *cT == parquet.ConvertedType_BSON || *cT == parquet.ConvertedType_JSON || *cT == parquet.ConvertedType_ENUM {
return stringFuncTable{}
} else if *cT == parquet.ConvertedType_INT_8 || *cT == parquet.ConvertedType_INT_16 || *cT == parquet.ConvertedType_INT_32 ||
*cT == parquet.ConvertedType_DATE || *cT == parquet.ConvertedType_TIME_MILLIS {
return int32FuncTable{}
} else if *cT == parquet.ConvertedType_UINT_8 || *cT == parquet.ConvertedType_UINT_16 || *cT == parquet.ConvertedType_UINT_32 {
return uint32FuncTable{}
} else if *cT == parquet.ConvertedType_INT_64 || *cT == parquet.ConvertedType_TIME_MICROS ||
*cT == parquet.ConvertedType_TIMESTAMP_MILLIS || *cT == parquet.ConvertedType_TIMESTAMP_MICROS {
return int64FuncTable{}
} else if *cT == parquet.ConvertedType_UINT_64 {
return uint64FuncTable{}
} else if *cT == parquet.ConvertedType_INTERVAL {
return intervalFuncTable{}
} else if *cT == parquet.ConvertedType_DECIMAL {
if *pT == parquet.Type_BYTE_ARRAY || *pT == parquet.Type_FIXED_LEN_BYTE_ARRAY {
return decimalStringFuncTable{}
} else if *pT == parquet.Type_INT32 {
return int32FuncTable{}
} else if *pT == parquet.Type_INT64 {
return int64FuncTable{}
}
}
}
if logT != nil {
if logT.TIME != nil || logT.TIMESTAMP != nil {
return FindFuncTable(pT, nil, nil)
} else if logT.DATE != nil {
return int32FuncTable{}
} else if logT.INTEGER != nil {
if logT.INTEGER.IsSigned {
return FindFuncTable(pT, nil, nil)
} else {
if *pT == parquet.Type_INT32 {
return uint32FuncTable{}
} else if *pT == parquet.Type_INT64 {
return uint64FuncTable{}
}
}
} else if logT.DECIMAL != nil {
if *pT == parquet.Type_BYTE_ARRAY || *pT == parquet.Type_FIXED_LEN_BYTE_ARRAY {
return decimalStringFuncTable{}
} else if *pT == parquet.Type_INT32 {
return int32FuncTable{}
} else if *pT == parquet.Type_INT64 {
return int64FuncTable{}
}
} else if logT.BSON != nil || logT.JSON != nil || logT.STRING != nil || logT.UUID != nil {
return stringFuncTable{}
}
}
panic("No known func table in FindFuncTable")
}
func Str2Int32(val string) (int32, error) {
valInt, err := strconv.Atoi(val)
if err != nil {
return 0, err
}
return int32(valInt), nil
}
func Str2Bool(val string) (bool, error) {
valBoolean, err := strconv.ParseBool(val)
if err != nil {
return false, err
}
return valBoolean, nil
}
type FuncTable interface {
LessThan(a interface{}, b interface{}) bool
MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32)
}
func Min(table FuncTable, a interface{}, b interface{}) interface{} {
if a == nil {
return b
}
if b == nil {
return a
}
if table.LessThan(a, b) {
return a
} else {
return b
}
}
func Max(table FuncTable, a interface{}, b interface{}) interface{} {
if a == nil {
return b
}
if b == nil {
return a
}
if table.LessThan(a, b) {
return b
} else {
return a
}
}
type boolFuncTable struct{}
func (_ boolFuncTable) LessThan(a interface{}, b interface{}) bool {
return !a.(bool) && b.(bool)
}
func (table boolFuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 1
}
type int32FuncTable struct{}
func (_ int32FuncTable) LessThan(a interface{}, b interface{}) bool {
switch a.(type) {
case int32, int16, int8:
return a.(int32) < b.(int32)
default:
return int32(a.(uint32)) < int32(b.(uint32))
}
}
func (table int32FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 4
}
type uint32FuncTable struct{}
func (_ uint32FuncTable) LessThan(a interface{}, b interface{}) bool {
switch a.(type) {
case int32, int16, int8:
return uint32(a.(int32)) < uint32(b.(int32))
default:
return a.(uint32) < b.(uint32)
}
}
func (table uint32FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 4
}
type int64FuncTable struct{}
func (_ int64FuncTable) LessThan(a interface{}, b interface{}) bool {
switch a.(type) {
case int64:
return a.(int64) < b.(int64)
default:
return int64(a.(uint64)) < int64(b.(uint64))
}
}
func (table int64FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 8
}
type uint64FuncTable struct{}
func (_ uint64FuncTable) LessThan(a interface{}, b interface{}) bool {
switch a.(type) {
case uint64:
return a.(uint64) < b.(uint64)
default:
return uint64(a.(int64)) < uint64(b.(int64))
}
}
func (table uint64FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 8
}
type int96FuncTable struct{}
func (_ int96FuncTable) LessThan(ai interface{}, bi interface{}) bool {
a, b := []byte(ai.(string)), []byte(bi.(string))
fa, fb := a[11]>>7, b[11]>>7
if fa > fb {
return true
} else if fa < fb {
return false
}
for i := 11; i >= 0; i-- {
if a[i] < b[i] {
return true
} else if a[i] > b[i] {
return false
}
}
return false
}
func (table int96FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), int32(len(val.(string)))
}
type float32FuncTable struct{}
func (_ float32FuncTable) LessThan(a interface{}, b interface{}) bool {
return a.(float32) < b.(float32)
}
func (table float32FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 4
}
type float64FuncTable struct{}
func (_ float64FuncTable) LessThan(a interface{}, b interface{}) bool {
return a.(float64) < b.(float64)
}
func (table float64FuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), 8
}
type stringFuncTable struct{}
func (_ stringFuncTable) LessThan(a interface{}, b interface{}) bool {
return a.(string) < b.(string)
}
func (table stringFuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), int32(len(val.(string)))
}
type intervalFuncTable struct{}
func (_ intervalFuncTable) LessThan(ai interface{}, bi interface{}) bool {
a, b := []byte(ai.(string)), []byte(bi.(string))
for i := 11; i >= 0; i-- {
if a[i] > b[i] {
return false
} else if a[i] < b[i] {
return true
}
}
return false
}
func (table intervalFuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), int32(len(val.(string)))
}
type decimalStringFuncTable struct{}
func (_ decimalStringFuncTable) LessThan(a interface{}, b interface{}) bool {
return CmpIntBinary(a.(string), b.(string), "BigEndian", true)
}
func (table decimalStringFuncTable) MinMaxSize(minVal interface{}, maxVal interface{}, val interface{}) (interface{}, interface{}, int32) {
return Min(table, minVal, val), Max(table, maxVal, val), int32(len(val.(string)))
}
// Get the size of a parquet value
func SizeOf(val reflect.Value) int64 {
var size int64
switch val.Type().Kind() {
case reflect.Ptr:
if val.IsNil() {
return 0
}
return SizeOf(val.Elem())
case reflect.Slice:
for i := 0; i < val.Len(); i++ {
size += SizeOf(val.Index(i))
}
return size
case reflect.Struct:
for i := 0; i < val.Type().NumField(); i++ {
size += SizeOf(val.Field(i))
}
return size
case reflect.Map:
keys := val.MapKeys()
for i := 0; i < len(keys); i++ {
size += SizeOf(keys[i])
size += SizeOf(val.MapIndex(keys[i]))
}
return size
case reflect.Bool:
return 1
case reflect.Int32:
return 4
case reflect.Int64:
return 8
case reflect.String:
return int64(val.Len())
case reflect.Float32:
return 4
case reflect.Float64:
return 8
}
return 4
}
const PAR_GO_PATH_DELIMITER = "\x01"
// . -> \x01
func ReformPathStr(pathStr string) string {
return strings.ReplaceAll(pathStr, ".", "\x01")
}