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field_type.go
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field_type.go
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package data
import (
"bytes"
"encoding/json"
"fmt"
"time"
)
// FieldType indicates the Go type underlying the Field.
type FieldType int
const (
// FieldTypeUnknown indicates that we do not know the field type
FieldTypeUnknown FieldType = iota
// FieldTypeInt8 indicates the underlying primitive is a []int8.
FieldTypeInt8
// FieldTypeNullableInt8 indicates the underlying primitive is a []*int8.
FieldTypeNullableInt8
// FieldTypeInt16 indicates the underlying primitive is a []int16.
FieldTypeInt16
// FieldTypeNullableInt16 indicates the underlying primitive is a []*int16.
FieldTypeNullableInt16
// FieldTypeInt32 indicates the underlying primitive is a []int32.
FieldTypeInt32
// FieldTypeNullableInt32 indicates the underlying primitive is a []*int32.
FieldTypeNullableInt32
// FieldTypeInt64 indicates the underlying primitive is a []int64.
FieldTypeInt64
// FieldTypeNullableInt64 indicates the underlying primitive is a []*int64.
FieldTypeNullableInt64
// FieldTypeUint8 indicates the underlying primitive is a []uint8.
FieldTypeUint8
// FieldTypeNullableUint8 indicates the underlying primitive is a []*uint8.
FieldTypeNullableUint8
// FieldTypeUint16 indicates the underlying primitive is a []uint16.
FieldTypeUint16
// FieldTypeNullableUint16 indicates the underlying primitive is a []*uint16.
FieldTypeNullableUint16
// FieldTypeUint32 indicates the underlying primitive is a []uint32.
FieldTypeUint32
// FieldTypeNullableUint32 indicates the underlying primitive is a []*uint32.
FieldTypeNullableUint32
// FieldTypeUint64 indicates the underlying primitive is a []uint64.
FieldTypeUint64
// FieldTypeNullableUint64 indicates the underlying primitive is a []*uint64.
FieldTypeNullableUint64
// FieldTypeFloat32 indicates the underlying primitive is a []float32.
FieldTypeFloat32
// FieldTypeNullableFloat32 indicates the underlying primitive is a []*float32.
FieldTypeNullableFloat32
// FieldTypeFloat64 indicates the underlying primitive is a []float64.
FieldTypeFloat64
// FieldTypeNullableFloat64 indicates the underlying primitive is a []*float64.
FieldTypeNullableFloat64
// FieldTypeString indicates the underlying primitive is a []string.
FieldTypeString
// FieldTypeNullableString indicates the underlying primitive is a []*string.
FieldTypeNullableString
// FieldTypeBool indicates the underlying primitive is a []bool.
FieldTypeBool
// FieldTypeNullableBool indicates the underlying primitive is a []*bool.
FieldTypeNullableBool
// FieldTypeTime indicates the underlying primitive is a []time.Time.
FieldTypeTime
// FieldTypeNullableTime indicates the underlying primitive is a []*time.Time.
FieldTypeNullableTime
// FieldTypeJSON indicates the underlying primitive is a []json.RawMessage.
FieldTypeJSON
// FieldTypeNullableJSON indicates the underlying primitive is a []*json.RawMessage.
FieldTypeNullableJSON
)
// MarshalJSON marshals the enum as a quoted json string
func (p FieldType) MarshalJSON() ([]byte, error) {
buffer := bytes.NewBufferString(`"`)
buffer.WriteString(p.ItemTypeString())
buffer.WriteString(`"`)
return buffer.Bytes(), nil
}
// UnmarshalJSON unmarshals a quoted json string to the enum value
func (p *FieldType) UnmarshalJSON(b []byte) error {
var j string
err := json.Unmarshal(b, &j)
if err != nil {
return err
}
f, ok := FieldTypeFromItemTypeString(j)
if !ok {
return fmt.Errorf("unknown field type: %s", j)
}
*p = f
return nil
}
// FieldTypeFor returns a concrete type for a given interface or unknown if not known
func FieldTypeFor(t interface{}) FieldType {
switch t.(type) {
case int8:
return FieldTypeInt8
case int16:
return FieldTypeInt16
case int32:
return FieldTypeInt32
case int64:
return FieldTypeInt64
case uint8:
return FieldTypeUint8
case uint16:
return FieldTypeUint16
case uint32:
return FieldTypeUint32
case uint64:
return FieldTypeUint64
case float32:
return FieldTypeFloat32
case float64:
return FieldTypeFloat64
case bool:
return FieldTypeBool
case string:
return FieldTypeString
case time.Time:
return FieldTypeTime
case json.RawMessage:
return FieldTypeJSON
}
return FieldTypeUnknown
}
// NullableType converts the FieldType to the corresponding nullable type.
func (p FieldType) NullableType() FieldType {
switch p {
// ints
case FieldTypeInt8, FieldTypeNullableInt8:
return FieldTypeNullableInt8
case FieldTypeInt16, FieldTypeNullableInt16:
return FieldTypeNullableInt16
case FieldTypeInt32, FieldTypeNullableInt32:
return FieldTypeNullableInt32
case FieldTypeInt64, FieldTypeNullableInt64:
return FieldTypeNullableInt64
// uints
case FieldTypeUint8, FieldTypeNullableUint8:
return FieldTypeNullableUint8
case FieldTypeUint16, FieldTypeNullableUint16:
return FieldTypeNullableUint16
case FieldTypeUint32, FieldTypeNullableUint32:
return FieldTypeNullableUint32
case FieldTypeUint64, FieldTypeNullableUint64:
return FieldTypeNullableUint64
// floats
case FieldTypeFloat32, FieldTypeNullableFloat32:
return FieldTypeNullableFloat32
case FieldTypeFloat64, FieldTypeNullableFloat64:
return FieldTypeNullableFloat64
// other
case FieldTypeString, FieldTypeNullableString:
return FieldTypeNullableString
case FieldTypeBool, FieldTypeNullableBool:
return FieldTypeNullableBool
case FieldTypeTime, FieldTypeNullableTime:
return FieldTypeNullableTime
case FieldTypeJSON, FieldTypeNullableJSON:
return FieldTypeNullableJSON
default:
panic(fmt.Sprintf("unsupported vector ptype: %+v", p))
}
}
// NonNullableType converts the FieldType to the corresponding not-nullable type.
func (p FieldType) NonNullableType() FieldType {
switch p {
// ints
case FieldTypeInt8, FieldTypeNullableInt8:
return FieldTypeInt8
case FieldTypeInt16, FieldTypeNullableInt16:
return FieldTypeInt16
case FieldTypeInt32, FieldTypeNullableInt32:
return FieldTypeInt32
case FieldTypeInt64, FieldTypeNullableInt64:
return FieldTypeInt64
// uints
case FieldTypeUint8, FieldTypeNullableUint8:
return FieldTypeUint8
case FieldTypeUint16, FieldTypeNullableUint16:
return FieldTypeUint16
case FieldTypeUint32, FieldTypeNullableUint32:
return FieldTypeUint32
case FieldTypeUint64, FieldTypeNullableUint64:
return FieldTypeUint64
// floats
case FieldTypeFloat32, FieldTypeNullableFloat32:
return FieldTypeFloat32
case FieldTypeFloat64, FieldTypeNullableFloat64:
return FieldTypeFloat64
// other
case FieldTypeString, FieldTypeNullableString:
return FieldTypeString
case FieldTypeBool, FieldTypeNullableBool:
return FieldTypeBool
case FieldTypeTime, FieldTypeNullableTime:
return FieldTypeTime
case FieldTypeJSON, FieldTypeNullableJSON:
return FieldTypeJSON
default:
panic(fmt.Sprintf("unsupported vector ptype: %+v", p))
}
}
// FieldTypeFromItemTypeString returns a field type from the current string
//nolint:goconst,gocyclo
func FieldTypeFromItemTypeString(s string) (FieldType, bool) {
switch s {
case "int8":
return FieldTypeInt8, true
case "*int8":
return FieldTypeNullableInt8, true
case "int16":
return FieldTypeInt16, true
case "*int16":
return FieldTypeNullableInt16, true
case "int32":
return FieldTypeInt32, true
case "*int32":
return FieldTypeNullableInt32, true
case "int", "int64":
return FieldTypeInt64, true
case "*int64":
return FieldTypeNullableInt64, true
case "uint8":
return FieldTypeUint8, true
case "*uint8":
return FieldTypeNullableUint8, true
case "uint16":
return FieldTypeUint16, true
case "*uint16":
return FieldTypeNullableUint16, true
case "uint32":
return FieldTypeUint32, true
case "*uint32":
return FieldTypeNullableUint32, true
case "uint64":
return FieldTypeUint64, true
case "*uint64":
return FieldTypeNullableUint64, true
case "float32":
return FieldTypeFloat32, true
case "*float32":
return FieldTypeNullableFloat32, true
case "double", "float", "float64":
return FieldTypeFloat64, true
case "*float64":
return FieldTypeNullableFloat64, true
case "string":
return FieldTypeString, true
case "*string":
return FieldTypeNullableString, true
case "bool", "boolean":
return FieldTypeBool, true
case "*bool":
return FieldTypeNullableBool, true
case "time", "time.Time":
return FieldTypeTime, true
case "*time.Time":
return FieldTypeNullableTime, true
case "json", "json.RawMessage":
return FieldTypeJSON, true
case "*json.RawMessage":
return FieldTypeNullableJSON, true
}
return FieldTypeNullableString, false
}
// ItemTypeString returns the string representation of the type of element within in the vector
func (p FieldType) ItemTypeString() string {
switch p {
case FieldTypeInt8:
return "int8"
case FieldTypeNullableInt8:
return "*int8"
case FieldTypeInt16:
return "int16"
case FieldTypeNullableInt16:
return "*int16"
case FieldTypeInt32:
return "int32"
case FieldTypeNullableInt32:
return "*int32"
case FieldTypeInt64:
return "int64"
case FieldTypeNullableInt64:
return "*int64"
case FieldTypeUint8:
return "uint8"
case FieldTypeNullableUint8:
return "*uint8"
case FieldTypeUint16:
return "uint16"
case FieldTypeNullableUint16:
return "*uint16"
case FieldTypeUint32:
return "uint32"
case FieldTypeNullableUint32:
return "*uint32"
case FieldTypeUint64:
return "uint64"
case FieldTypeNullableUint64:
return "*uint64"
case FieldTypeFloat32:
return "float32"
case FieldTypeNullableFloat32:
return "*float32"
case FieldTypeFloat64:
return "float64"
case FieldTypeNullableFloat64:
return "*float64"
case FieldTypeString:
return "string"
case FieldTypeNullableString:
return "*string"
case FieldTypeBool:
return "bool"
case FieldTypeNullableBool:
return "*bool"
case FieldTypeTime:
return "time.Time"
case FieldTypeNullableTime:
return "*time.Time"
case FieldTypeJSON:
return "json.RawMessage"
case FieldTypeNullableJSON:
return "*json.RawMessage"
}
return "invalid/unsupported type"
}
// ValidFieldType returns if a primitive slice is a valid supported Field type.
func ValidFieldType(t interface{}) bool {
switch t.(type) {
// ints
case []int8:
return true
case []*int8:
return true
case []int16:
return true
case []*int16:
return true
case []int32:
return true
case []*int32:
return true
case []int64:
return true
case []*int64:
return true
// uints
case []uint8:
return true
case []*uint8:
return true
case []uint16:
return true
case []*uint16:
return true
case []uint32:
return true
case []*uint32:
return true
case []uint64:
return true
case []*uint64:
return true
// floats
case []float32:
return true
case []*float32:
return true
case []float64:
return true
case []*float64:
return true
case []string:
return true
case []*string:
return true
case []bool:
return true
case []*bool:
return true
case []time.Time:
return true
case []*time.Time:
return true
case []json.RawMessage:
return true
case []*json.RawMessage:
return true
default:
return false
}
}
// Nullable returns if Field type is a nullable type
func (p FieldType) Nullable() bool {
switch p {
case FieldTypeNullableInt8, FieldTypeNullableInt16, FieldTypeNullableInt32, FieldTypeNullableInt64:
return true
case FieldTypeNullableUint8, FieldTypeNullableUint16, FieldTypeNullableUint32, FieldTypeNullableUint64:
return true
case FieldTypeNullableFloat32, FieldTypeNullableFloat64:
return true
case FieldTypeNullableString:
return true
case FieldTypeNullableBool:
return true
case FieldTypeNullableTime:
return true
case FieldTypeNullableJSON:
return true
}
return false
}
// Numeric returns if Field type is a nullable type.
func (p FieldType) Numeric() bool {
switch p {
case FieldTypeInt8, FieldTypeInt16, FieldTypeInt32, FieldTypeInt64:
return true
case FieldTypeNullableInt8, FieldTypeNullableInt16, FieldTypeNullableInt32, FieldTypeNullableInt64:
return true
case FieldTypeUint8, FieldTypeUint16, FieldTypeUint32, FieldTypeUint64:
return true
case FieldTypeNullableUint8, FieldTypeNullableUint16, FieldTypeNullableUint32, FieldTypeNullableUint64:
return true
case FieldTypeFloat32, FieldTypeFloat64:
return true
case FieldTypeNullableFloat32, FieldTypeNullableFloat64:
return true
}
return false
}
// Time returns if Field type is a time type (FieldTypeTime or FieldTypeNullableTime).
func (p FieldType) Time() bool {
return p == FieldTypeTime || p == FieldTypeNullableTime
}
// JSON returns if Field type is a json type (FieldTypeJSON or FieldTypeNullableJSON).
func (p FieldType) JSON() bool {
return p == FieldTypeJSON || p == FieldTypeNullableJSON
}
// numericFieldTypes is an array of FieldTypes that are numeric.
var numericFieldTypes = [...]FieldType{
FieldTypeInt8, FieldTypeInt16, FieldTypeInt32, FieldTypeInt64,
FieldTypeNullableInt8, FieldTypeNullableInt16, FieldTypeNullableInt32, FieldTypeNullableInt64,
FieldTypeUint8, FieldTypeUint16, FieldTypeUint32, FieldTypeUint64,
FieldTypeNullableUint8, FieldTypeNullableUint16, FieldTypeNullableUint32, FieldTypeNullableUint64,
FieldTypeFloat32, FieldTypeFloat64,
FieldTypeNullableFloat32, FieldTypeNullableFloat64}
// NumericFieldTypes returns a slice of FieldTypes that are numeric.
func NumericFieldTypes() []FieldType {
return numericFieldTypes[:]
}