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Copy pathcolumn_buffer_uint32.go
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Copy pathcolumn_buffer_uint32.go
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146 lines (117 loc) · 4.01 KB
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package parquet
import (
"fmt"
"io"
"strconv"
"github.com/parquet-go/bitpack/unsafecast"
"github.com/parquet-go/parquet-go/deprecated"
"github.com/parquet-go/parquet-go/internal/memory"
"github.com/parquet-go/parquet-go/sparse"
)
type uint32ColumnBuffer struct{ uint32Page }
func newUint32ColumnBuffer(typ Type, columnIndex uint16, numValues int32) *uint32ColumnBuffer {
return &uint32ColumnBuffer{
uint32Page: uint32Page{
typ: typ,
values: memory.SliceBufferFor[uint32](int(numValues)),
columnIndex: ^columnIndex,
},
}
}
func (col *uint32ColumnBuffer) Clone() ColumnBuffer {
cloned := &uint32ColumnBuffer{
uint32Page: uint32Page{
typ: col.typ,
columnIndex: col.columnIndex,
},
}
cloned.values.Append(col.values.Slice()...)
return cloned
}
func (col *uint32ColumnBuffer) ColumnIndex() (ColumnIndex, error) {
return uint32ColumnIndex{&col.uint32Page}, nil
}
func (col *uint32ColumnBuffer) OffsetIndex() (OffsetIndex, error) {
return uint32OffsetIndex{&col.uint32Page}, nil
}
func (col *uint32ColumnBuffer) BloomFilter() BloomFilter { return nil }
func (col *uint32ColumnBuffer) Dictionary() Dictionary { return nil }
func (col *uint32ColumnBuffer) Pages() Pages { return onePage(col.Page()) }
func (col *uint32ColumnBuffer) Page() Page { return &col.uint32Page }
func (col *uint32ColumnBuffer) Reset() { col.values.Reset() }
func (col *uint32ColumnBuffer) Cap() int { return col.values.Cap() }
func (col *uint32ColumnBuffer) Len() int { return col.values.Len() }
func (col *uint32ColumnBuffer) Less(i, j int) bool { return col.values.Less(i, j) }
func (col *uint32ColumnBuffer) Swap(i, j int) { col.values.Swap(i, j) }
func (col *uint32ColumnBuffer) Write(b []byte) (int, error) {
if (len(b) % 4) != 0 {
return 0, fmt.Errorf("cannot write INT32 values from input of size %d", len(b))
}
col.values.Append(unsafecast.Slice[uint32](b)...)
return len(b), nil
}
func (col *uint32ColumnBuffer) WriteUint32s(values []uint32) (int, error) {
col.values.Append(values...)
return len(values), nil
}
func (col *uint32ColumnBuffer) WriteValues(values []Value) (int, error) {
col.writeValues(columnLevels{}, makeArrayValue(values, offsetOfU32))
return len(values), nil
}
func (col *uint32ColumnBuffer) writeValues(levels columnLevels, rows sparse.Array) {
offset := col.values.Len()
col.values.Resize(offset + rows.Len())
sparse.GatherUint32(col.values.Slice()[offset:], rows.Uint32Array())
}
func (col *uint32ColumnBuffer) writeBoolean(levels columnLevels, value bool) {
var uintValue uint32
if value {
uintValue = 1
}
col.values.AppendValue(uintValue)
}
func (col *uint32ColumnBuffer) writeInt32(levels columnLevels, value int32) {
col.values.AppendValue(uint32(value))
}
func (col *uint32ColumnBuffer) writeInt64(levels columnLevels, value int64) {
col.values.AppendValue(uint32(value))
}
func (col *uint32ColumnBuffer) writeInt96(levels columnLevels, value deprecated.Int96) {
col.values.AppendValue(uint32(value.Int32()))
}
func (col *uint32ColumnBuffer) writeFloat(levels columnLevels, value float32) {
col.values.AppendValue(uint32(value))
}
func (col *uint32ColumnBuffer) writeDouble(levels columnLevels, value float64) {
col.values.AppendValue(uint32(value))
}
func (col *uint32ColumnBuffer) writeByteArray(levels columnLevels, value []byte) {
uintValue, err := strconv.ParseUint(unsafecast.String(value), 10, 32)
if err != nil {
panic("cannot write byte array to uint32 column: " + err.Error())
}
col.values.AppendValue(uint32(uintValue))
}
func (col *uint32ColumnBuffer) writeNull(levels columnLevels) {
col.values.AppendValue(0)
}
func (col *uint32ColumnBuffer) ReadValuesAt(values []Value, offset int64) (n int, err error) {
i := int(offset)
colValues := col.values.Slice()
switch {
case i < 0:
return 0, errRowIndexOutOfBounds(offset, int64(len(colValues)))
case i >= len(colValues):
return 0, io.EOF
default:
for n < len(values) && i < len(colValues) {
values[n] = col.makeValue(colValues[i])
n++
i++
}
if n < len(values) {
err = io.EOF
}
return n, err
}
}