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diff.go
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/
diff.go
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package plugin
import (
"fmt"
"strings"
"github.com/apache/arrow/go/v13/arrow"
"github.com/apache/arrow/go/v13/arrow/array"
)
func RecordDiff(l, r arrow.Record) string {
var sb strings.Builder
if l.NumCols() != r.NumCols() {
return fmt.Sprintf("different number of columns: %d vs %d", l.NumCols(), r.NumCols())
}
if l.NumRows() != r.NumRows() {
return fmt.Sprintf("different number of rows: %d vs %d", l.NumRows(), r.NumRows())
}
for i := 0; i < int(l.NumCols()); i++ {
edits, err := array.Diff(l.Column(i), r.Column(i))
if err != nil {
panic(fmt.Sprintf("left: %v, right: %v, error: %v", l.Column(i).DataType(), r.Column(i).DataType(), err))
}
diff := edits.UnifiedDiff(l.Column(i), r.Column(i))
if diff != "" {
sb.WriteString(l.Schema().Field(i).Name)
sb.WriteString(": ")
sb.WriteString(diff)
sb.WriteString("\n")
}
}
return sb.String()
}