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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package file_test
import (
"bytes"
"testing"
"github.com/apache/arrow-go/v18/arrow/memory"
"github.com/apache/arrow-go/v18/parquet/file"
"github.com/apache/arrow-go/v18/parquet/internal/encoding"
"github.com/apache/arrow-go/v18/parquet/schema"
"github.com/apache/thrift/lib/go/thrift"
"github.com/stretchr/testify/assert"
)
func TestBufferedRowGroupNulls(t *testing.T) {
type SimpleSchema struct {
Col1 *int32
Col2 *float32
Col3 *float64
Col4 *int64
}
data := []SimpleSchema{
{thrift.Int32Ptr(5), thrift.Float32Ptr(10), thrift.Float64Ptr(20), thrift.Int64Ptr(8)},
{nil, thrift.Float32Ptr(10), thrift.Float64Ptr(20), thrift.Int64Ptr(8)},
{thrift.Int32Ptr(5), nil, thrift.Float64Ptr(20), thrift.Int64Ptr(8)},
{thrift.Int32Ptr(5), thrift.Float32Ptr(10), nil, thrift.Int64Ptr(8)},
{thrift.Int32Ptr(5), thrift.Float32Ptr(10), thrift.Float64Ptr(20), nil},
{thrift.Int32Ptr(5), thrift.Float32Ptr(10), thrift.Float64Ptr(20), thrift.Int64Ptr(8)},
}
sink := encoding.NewBufferWriter(0, memory.DefaultAllocator)
sc, err := schema.NewSchemaFromStruct(SimpleSchema{})
assert.NoError(t, err)
writer := file.NewParquetWriter(sink, sc.Root())
rgWriter := writer.AppendBufferedRowGroup()
for _, d := range data {
cw, _ := rgWriter.Column(0)
if d.Col1 != nil {
cw.(*file.Int32ColumnChunkWriter).WriteBatch([]int32{*d.Col1}, []int16{1}, nil)
} else {
cw.(*file.Int32ColumnChunkWriter).WriteBatch(nil, []int16{0}, nil)
}
cw, _ = rgWriter.Column(1)
if d.Col2 != nil {
cw.(*file.Float32ColumnChunkWriter).WriteBatch([]float32{*d.Col2}, []int16{1}, nil)
} else {
cw.(*file.Float32ColumnChunkWriter).WriteBatch(nil, []int16{0}, nil)
}
cw, _ = rgWriter.Column(2)
if d.Col3 != nil {
cw.(*file.Float64ColumnChunkWriter).WriteBatch([]float64{*d.Col3}, []int16{1}, nil)
} else {
cw.(*file.Float64ColumnChunkWriter).WriteBatch(nil, []int16{0}, nil)
}
cw, _ = rgWriter.Column(3)
if d.Col4 != nil {
cw.(*file.Int64ColumnChunkWriter).WriteBatch([]int64{*d.Col4}, []int16{1}, nil)
} else {
cw.(*file.Int64ColumnChunkWriter).WriteBatch(nil, []int16{0}, nil)
}
}
rgWriter.Close()
writer.Close()
buffer := sink.Finish()
defer buffer.Release()
reader, err := file.NewParquetReader(bytes.NewReader(buffer.Bytes()))
assert.NoError(t, err)
assert.EqualValues(t, 1, reader.NumRowGroups())
rgr := reader.RowGroup(0)
assert.EqualValues(t, len(data), rgr.NumRows())
}
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