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types.go
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types.go
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package types
import (
"fmt"
"time"
"github.com/apache/arrow/go/v10/arrow/array"
"github.com/isamert/bigquery-emulator/types"
"github.com/goccy/go-zetasqlite"
bigqueryv2 "google.golang.org/api/bigquery/v2"
)
type (
GetQueryResultsResponse struct {
JobReference *bigqueryv2.JobReference `json:"jobReference"`
Schema *bigqueryv2.TableSchema `json:"schema"`
Rows []*TableRow `json:"rows"`
TotalRows uint64 `json:"totalRows,string"`
JobComplete bool `json:"jobComplete"`
TotalBytes uint64 `json:"-"`
}
QueryResponse struct {
JobReference *bigqueryv2.JobReference `json:"jobReference"`
Schema *bigqueryv2.TableSchema `json:"schema"`
Rows []*TableRow `json:"rows"`
TotalRows uint64 `json:"totalRows,string"`
JobComplete bool `json:"jobComplete"`
TotalBytes int64 `json:"-"`
ChangedCatalog *zetasqlite.ChangedCatalog `json:"-"`
}
TableDataList struct {
Rows []*TableRow `json:"rows"`
TotalRows uint64 `json:"totalRows,string"`
}
TableRow struct {
F []*TableCell `json:"f,omitempty"`
}
// Redefines the TableCell type to return null explicitly
// because TableCell for bigqueryv2 is omitted if V is nil,
TableCell struct {
V interface{} `json:"v"`
Bytes int64 `json:"-"`
Name string `json:"-"`
}
)
func (r *TableRow) Data() (map[string]interface{}, error) {
rowMap := map[string]interface{}{}
for _, cell := range r.F {
v, err := cell.Data()
if err != nil {
return nil, err
}
rowMap[cell.Name] = v
}
return rowMap, nil
}
func (r *TableRow) AVROValue(fields []*types.AVROFieldSchema) (map[string]interface{}, error) {
rowMap := map[string]interface{}{}
for idx, cell := range r.F {
v, err := cell.AVROValue(fields[idx])
if err != nil {
return nil, err
}
rowMap[cell.Name] = v
}
return rowMap, nil
}
func (c *TableCell) Data() (interface{}, error) {
switch v := c.V.(type) {
case TableRow:
return v.Data()
case []*TableCell:
ret := make([]interface{}, 0, len(v))
for _, vv := range v {
data, err := vv.Data()
if err != nil {
return nil, err
}
ret = append(ret, data)
}
return ret, nil
default:
if v == nil {
return nil, nil
}
text, ok := v.(string)
if !ok {
return nil, fmt.Errorf("failed to cast to string from %s", v)
}
return text, nil
}
}
func (c *TableCell) AVROValue(schema *types.AVROFieldSchema) (interface{}, error) {
switch v := c.V.(type) {
case TableRow:
fields := types.TableFieldSchemasToAVRO(schema.Type.TypeSchema.Fields)
return v.AVROValue(fields)
case []*TableCell:
ret := make([]interface{}, 0, len(v))
for _, vv := range v {
avrov, err := vv.AVROValue(schema)
if err != nil {
return nil, err
}
ret = append(ret, avrov)
}
return ret, nil
default:
if v == nil {
return map[string]interface{}{schema.Type.Key(): nil}, nil
}
text, ok := v.(string)
if !ok {
return nil, fmt.Errorf("failed to cast to string from %s", v)
}
value, err := schema.Type.CastValue(text)
if err != nil {
return nil, err
}
if types.Mode(schema.Type.TypeSchema.Mode) == types.RequiredMode {
return value, nil
}
return map[string]interface{}{schema.Type.Key(): value}, nil
}
}
func (r *TableRow) AppendValueToARROWBuilder(builder *array.RecordBuilder) error {
for idx, cell := range r.F {
if err := cell.AppendValueToARROWBuilder(builder.Field(idx)); err != nil {
return err
}
}
return nil
}
func (r *TableRow) appendValueToARROWBuilder(builder *array.StructBuilder) error {
for idx, cell := range r.F {
if err := cell.AppendValueToARROWBuilder(builder.FieldBuilder(idx)); err != nil {
return err
}
}
return nil
}
func (c *TableCell) AppendValueToARROWBuilder(builder array.Builder) error {
switch v := c.V.(type) {
case TableRow:
b, ok := builder.(*array.StructBuilder)
if !ok {
return fmt.Errorf("failed to convert to struct builder from %T", builder)
}
b.Append(true)
return v.appendValueToARROWBuilder(b)
case []*TableCell:
listBuilder, ok := builder.(*array.ListBuilder)
if !ok {
return fmt.Errorf("failed to convert to list builder from %T", builder)
}
b := listBuilder.ValueBuilder()
for _, vv := range v {
listBuilder.Append(true)
if err := vv.AppendValueToARROWBuilder(b); err != nil {
return err
}
}
return nil
default:
if v == nil {
return types.AppendValueToARROWBuilder(nil, builder)
}
text, ok := v.(string)
if !ok {
return fmt.Errorf("failed to cast to string from %s", v)
}
return types.AppendValueToARROWBuilder(&text, builder)
}
}
func Format(schema *bigqueryv2.TableSchema, rows []*TableRow, useInt64Timestamp bool) []*TableRow {
if !useInt64Timestamp {
return rows
}
formattedRows := make([]*TableRow, 0, len(rows))
for _, row := range rows {
cells := make([]*TableCell, 0, len(row.F))
for colIdx, cell := range row.F {
if schema.Fields[colIdx].Type == "TIMESTAMP" {
t, _ := zetasqlite.TimeFromTimestampValue(cell.V.(string))
microsec := t.UnixNano() / int64(time.Microsecond)
cells = append(cells, &TableCell{
V: fmt.Sprint(microsec),
})
} else {
cells = append(cells, cell)
}
}
formattedRows = append(formattedRows, &TableRow{
F: cells,
})
}
return formattedRows
}