1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
|
// 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 schema_test
import (
"log"
"os"
"reflect"
"testing"
"github.com/apache/arrow-go/v18/arrow/float16"
"github.com/apache/arrow-go/v18/parquet"
"github.com/apache/arrow-go/v18/parquet/schema"
"github.com/stretchr/testify/assert"
)
func ExampleNewSchemaFromStruct_primitives() {
type Schema struct {
Bool bool
Int8 int8
Uint16 uint16
Int32 int32
Int64 int64
Int96 parquet.Int96
Float float32
Double float64
ByteArray string
FixedLenByteArray [10]byte
}
sc, err := schema.NewSchemaFromStruct(Schema{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 Schema {
// required boolean field_id=-1 Bool;
// required int32 field_id=-1 Int8 (Int(bitWidth=8, isSigned=true));
// required int32 field_id=-1 Uint16 (Int(bitWidth=16, isSigned=false));
// required int32 field_id=-1 Int32 (Int(bitWidth=32, isSigned=true));
// required int64 field_id=-1 Int64 (Int(bitWidth=64, isSigned=true));
// required int96 field_id=-1 Int96;
// required float field_id=-1 Float;
// required double field_id=-1 Double;
// required byte_array field_id=-1 ByteArray;
// required fixed_len_byte_array field_id=-1 FixedLenByteArray;
// }
}
func ExampleNewSchemaFromStruct_convertedtypes() {
type ConvertedSchema struct {
Utf8 string `parquet:"name=utf8, converted=UTF8"`
Uint32 uint32 `parquet:"converted=INT_32"`
Date int32 `parquet:"name=date, converted=date"`
TimeMilli int32 `parquet:"name=timemilli, converted=TIME_MILLIS"`
TimeMicro int64 `parquet:"name=timemicro, converted=time_micros"`
TimeStampMilli int64 `parquet:"converted=timestamp_millis"`
TimeStampMicro int64 `parquet:"converted=timestamp_micros"`
Interval parquet.Int96 `parquet:"converted=INTERVAL"`
Decimal1 int32 `parquet:"converted=decimal, scale=2, precision=9"`
Decimal2 int64 `parquet:"converted=decimal, scale=2, precision=18"`
Decimal3 [12]byte `parquet:"converted=decimal, scale=2, precision=10"`
Decimal4 string `parquet:"converted=decimal, scale=2, precision=20"`
}
sc, err := schema.NewSchemaFromStruct(&ConvertedSchema{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 ConvertedSchema {
// required byte_array field_id=-1 utf8 (String);
// required int32 field_id=-1 Uint32 (Int(bitWidth=32, isSigned=true));
// required int32 field_id=-1 date (Date);
// required int32 field_id=-1 timemilli (Time(isAdjustedToUTC=true, timeUnit=milliseconds));
// required int64 field_id=-1 timemicro (Time(isAdjustedToUTC=true, timeUnit=microseconds));
// required int64 field_id=-1 TimeStampMilli (Timestamp(isAdjustedToUTC=true, timeUnit=milliseconds, is_from_converted_type=true, force_set_converted_type=false));
// required int64 field_id=-1 TimeStampMicro (Timestamp(isAdjustedToUTC=true, timeUnit=microseconds, is_from_converted_type=true, force_set_converted_type=false));
// required int96 field_id=-1 Interval;
// required int32 field_id=-1 Decimal1 (Decimal(precision=9, scale=2));
// required int64 field_id=-1 Decimal2 (Decimal(precision=18, scale=2));
// required fixed_len_byte_array field_id=-1 Decimal3 (Decimal(precision=10, scale=2));
// required byte_array field_id=-1 Decimal4 (Decimal(precision=20, scale=2));
// }
}
func ExampleNewSchemaFromStruct_repetition() {
type RepetitionSchema struct {
List []int64 `parquet:"fieldid=1"`
Repeated []int64 `parquet:"repetition=repeated, fieldid=2"`
Optional *int64 `parquet:"fieldid=3"`
Required *int64 `parquet:"repetition=REQUIRED, fieldid=4"`
Opt int64 `parquet:"repetition=OPTIONAL, fieldid=5"`
}
sc, err := schema.NewSchemaFromStruct(RepetitionSchema{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 RepetitionSchema {
// required group field_id=1 List (List) {
// repeated group field_id=-1 list {
// required int64 field_id=-1 element (Int(bitWidth=64, isSigned=true));
// }
// }
// repeated int64 field_id=2 Repeated (Int(bitWidth=64, isSigned=true));
// optional int64 field_id=3 Optional (Int(bitWidth=64, isSigned=true));
// required int64 field_id=4 Required (Int(bitWidth=64, isSigned=true));
// optional int64 field_id=5 Opt (Int(bitWidth=64, isSigned=true));
// }
}
func ExampleNewSchemaFromStruct_logicaltypes() {
type LogicalTypes struct {
String []byte `parquet:"logical=String"`
Enum string `parquet:"logical=enum"`
Date int32 `parquet:"logical=date"`
Decimal1 int32 `parquet:"logical=decimal, precision=9, scale=2"`
Decimal2 int32 `parquet:"logical=decimal, logical.precision=9, scale=2"`
Decimal3 int32 `parquet:"logical=decimal, precision=5, logical.precision=9, scale=1, logical.scale=3"`
TimeMilliUTC int32 `parquet:"logical=TIME, logical.unit=millis"`
TimeMilli int32 `parquet:"logical=Time, logical.unit=millis, logical.isadjustedutc=false"`
TimeMicros int64 `parquet:"logical=time, logical.unit=micros, logical.isadjustedutc=false"`
TimeMicrosUTC int64 `parquet:"logical=time, logical.unit=micros, logical.isadjustedutc=true"`
TimeNanos int64 `parquet:"logical=time, logical.unit=nanos"`
TimestampMilli int64 `parquet:"logical=timestamp, logical.unit=millis"`
TimestampMicrosNotUTC int64 `parquet:"logical=timestamp, logical.unit=micros, logical.isadjustedutc=false"`
TimestampNanos int64 `parquet:"logical=timestamp, logical.unit=nanos"`
JSON string `parquet:"logical=json"`
BSON []byte `parquet:"logical=BSON"`
UUID [16]byte `parquet:"logical=uuid"`
Float16 [2]byte `parquet:"logical=float16"`
Float16Optional *[2]byte `parquet:"logical=float16"`
Float16Num float16.Num
}
sc, err := schema.NewSchemaFromStruct(LogicalTypes{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 LogicalTypes {
// required byte_array field_id=-1 String (String);
// required byte_array field_id=-1 Enum (Enum);
// required int32 field_id=-1 Date (Date);
// required int32 field_id=-1 Decimal1 (Decimal(precision=9, scale=2));
// required int32 field_id=-1 Decimal2 (Decimal(precision=9, scale=2));
// required int32 field_id=-1 Decimal3 (Decimal(precision=9, scale=3));
// required int32 field_id=-1 TimeMilliUTC (Time(isAdjustedToUTC=true, timeUnit=milliseconds));
// required int32 field_id=-1 TimeMilli (Time(isAdjustedToUTC=false, timeUnit=milliseconds));
// required int64 field_id=-1 TimeMicros (Time(isAdjustedToUTC=false, timeUnit=microseconds));
// required int64 field_id=-1 TimeMicrosUTC (Time(isAdjustedToUTC=true, timeUnit=microseconds));
// required int64 field_id=-1 TimeNanos (Time(isAdjustedToUTC=true, timeUnit=nanoseconds));
// required int64 field_id=-1 TimestampMilli (Timestamp(isAdjustedToUTC=true, timeUnit=milliseconds, is_from_converted_type=false, force_set_converted_type=false));
// required int64 field_id=-1 TimestampMicrosNotUTC (Timestamp(isAdjustedToUTC=false, timeUnit=microseconds, is_from_converted_type=false, force_set_converted_type=false));
// required int64 field_id=-1 TimestampNanos (Timestamp(isAdjustedToUTC=true, timeUnit=nanoseconds, is_from_converted_type=false, force_set_converted_type=false));
// required byte_array field_id=-1 JSON (JSON);
// required byte_array field_id=-1 BSON (BSON);
// required fixed_len_byte_array field_id=-1 UUID (UUID);
// required fixed_len_byte_array field_id=-1 Float16 (Float16);
// optional fixed_len_byte_array field_id=-1 Float16Optional (Float16);
// required fixed_len_byte_array field_id=-1 Float16Num (Float16);
// }
}
func ExampleNewSchemaFromStruct_physicaltype() {
type ChangeTypes struct {
Int32 int64 `parquet:"type=int32"`
FixedLen string `parquet:"type=fixed_len_byte_array, length=10"`
SliceAsFixed []byte `parquet:"type=fixed_len_byte_array, length=12"`
Int int `parquet:"type=int32"`
}
sc, err := schema.NewSchemaFromStruct(ChangeTypes{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 ChangeTypes {
// required int32 field_id=-1 Int32 (Int(bitWidth=32, isSigned=true));
// required fixed_len_byte_array field_id=-1 FixedLen;
// required fixed_len_byte_array field_id=-1 SliceAsFixed;
// required int32 field_id=-1 Int (Int(bitWidth=32, isSigned=true));
// }
}
func ExampleNewSchemaFromStruct_nestedtypes() {
type Other struct {
OptionalMap *map[string]*string `parquet:"valuerepetition=required, keylogical=String, valueconverted=BSON"`
}
type MyMap map[int32]string
type Nested struct {
SimpleMap map[int32]string
FixedLenMap map[string][]byte `parquet:"keytype=fixed_len_byte_array, keyfieldid=10, valuefieldid=11, keylength=10"`
DecimalMap map[int32]string `parquet:"logical=map, keyconverted=DECIMAL, keyscale=3, keyprecision=7, valuetype=fixed_len_byte_array, valuelength=4, valuelogical=decimal, valuelogical.precision=9, valuescale=2"`
OtherList []*Other
OtherRepeated []Other `parquet:"repetition=repeated"`
DateArray [5]int32 `parquet:"valuelogical=date, logical=list"`
DateMap MyMap `parquet:"keylogical=TIME, keylogical.unit=MILLIS, keylogical.isadjustedutc=false, valuelogical=enum"`
}
sc, err := schema.NewSchemaFromStruct(Nested{})
if err != nil {
log.Fatal(err)
}
schema.PrintSchema(sc.Root(), os.Stdout, 2)
// Output:
// repeated group field_id=-1 Nested {
// required group field_id=-1 SimpleMap (Map) {
// repeated group field_id=-1 key_value {
// required int32 field_id=-1 key (Int(bitWidth=32, isSigned=true));
// required byte_array field_id=-1 value;
// }
// }
// required group field_id=-1 FixedLenMap (Map) {
// repeated group field_id=-1 key_value {
// required fixed_len_byte_array field_id=10 key;
// required byte_array field_id=11 value;
// }
// }
// required group field_id=-1 DecimalMap (Map) {
// repeated group field_id=-1 key_value {
// required int32 field_id=-1 key (Decimal(precision=7, scale=3));
// required fixed_len_byte_array field_id=-1 value (Decimal(precision=9, scale=2));
// }
// }
// required group field_id=-1 OtherList (List) {
// repeated group field_id=-1 list {
// optional group field_id=-1 element {
// optional group field_id=-1 OptionalMap (Map) {
// repeated group field_id=-1 key_value {
// required byte_array field_id=-1 key (String);
// required byte_array field_id=-1 value (BSON);
// }
// }
// }
// }
// }
// repeated group field_id=-1 OtherRepeated {
// optional group field_id=-1 OptionalMap (Map) {
// repeated group field_id=-1 key_value {
// required byte_array field_id=-1 key (String);
// required byte_array field_id=-1 value (BSON);
// }
// }
// }
// required group field_id=-1 DateArray (List) {
// repeated group field_id=-1 list {
// required int32 field_id=-1 element (Date);
// }
// }
// required group field_id=-1 DateMap (Map) {
// repeated group field_id=-1 key_value {
// required int32 field_id=-1 key (Time(isAdjustedToUTC=false, timeUnit=milliseconds));
// required byte_array field_id=-1 value (Enum);
// }
// }
// }
}
func TestStructFromSchema(t *testing.T) {
root, err := schema.NewGroupNode("schema", parquet.Repetitions.Repeated, schema.FieldList{
schema.NewBooleanNode("bool", parquet.Repetitions.Required, -1),
schema.NewInt32Node("int32", parquet.Repetitions.Optional, -1),
schema.NewInt64Node("int64", parquet.Repetitions.Repeated, -1),
schema.NewInt96Node("int96", parquet.Repetitions.Required, -1),
schema.NewFloat32Node("float", parquet.Repetitions.Required, -1),
schema.NewByteArrayNode("bytearray", parquet.Repetitions.Required, -1),
schema.NewFixedLenByteArrayNode("fixedLen", parquet.Repetitions.Required, 10, -1),
}, -1)
assert.NoError(t, err)
sc := schema.NewSchema(root)
typ, err := schema.NewStructFromSchema(sc)
assert.NoError(t, err)
assert.Equal(t, reflect.Struct, typ.Kind())
assert.Equal(t, "struct { bool bool; int32 *int32; int64 []int64; int96 parquet.Int96; float float32; bytearray parquet.ByteArray; fixedLen parquet.FixedLenByteArray }",
typ.String())
}
func TestStructFromSchemaWithNesting(t *testing.T) {
type Other struct {
List *[]*float32
Excluded int32 `parquet:"-"`
}
type Nested struct {
Nest []int32
OptionalNest []*int64
Mapped map[string]float32
Other []Other
Other2 Other
}
sc, err := schema.NewSchemaFromStruct(Nested{})
assert.NoError(t, err)
typ, err := schema.NewStructFromSchema(sc)
assert.NoError(t, err)
assert.Equal(t, "struct { Nest []int32; OptionalNest []*int64; Mapped map[string]float32; Other []struct { List *[]*float32 }; Other2 struct { List *[]*float32 } }",
typ.String())
}
func TestStructFromSchemaBackwardsCompatList(t *testing.T) {
tests := []struct {
name string
n schema.Node
expected string
}{
{"proper list", schema.MustGroup(schema.NewGroupNodeLogical("my_list", parquet.Repetitions.Required,
schema.FieldList{
schema.MustGroup(schema.NewGroupNode("list", parquet.Repetitions.Repeated, schema.FieldList{schema.NewBooleanNode("element", parquet.Repetitions.Optional, -1)}, -1)),
}, schema.NewListLogicalType(), -1)), "struct { my_list []*bool }"},
{"backward nullable list nonnull ints", schema.MustGroup(schema.NewGroupNodeLogical("my_list", parquet.Repetitions.Optional, schema.FieldList{
schema.NewInt32Node("element", parquet.Repetitions.Repeated, -1),
}, schema.NewListLogicalType(), -1)), "struct { my_list *[]int32 }"},
{"backward nullable list tuple string int", schema.MustGroup(schema.NewGroupNodeLogical("my_list", parquet.Repetitions.Optional, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("element", parquet.Repetitions.Repeated, schema.FieldList{
schema.MustPrimitive(schema.NewPrimitiveNodeLogical("str", parquet.Repetitions.Required, schema.StringLogicalType{}, parquet.Types.ByteArray, 0, -1)),
schema.NewInt32Node("num", parquet.Repetitions.Required, -1),
}, -1)),
}, schema.NewListLogicalType(), -1)), "struct { my_list *[]struct { str string; num int32 } }"},
{"list tuple string", schema.MustGroup(schema.NewGroupNodeLogical("my_list", parquet.Repetitions.Required, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("array", parquet.Repetitions.Repeated, schema.FieldList{
schema.NewByteArrayNode("str", parquet.Repetitions.Required, -1),
}, -1)),
}, schema.NewListLogicalType(), -1)), "struct { my_list []struct { str parquet.ByteArray } }"},
{"list tuple string my_list_tuple", schema.MustGroup(schema.NewGroupNodeLogical("my_list", parquet.Repetitions.Optional, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("my_list_tuple", parquet.Repetitions.Repeated, schema.FieldList{
schema.MustPrimitive(schema.NewPrimitiveNodeLogical("str", parquet.Repetitions.Required, schema.StringLogicalType{}, parquet.Types.ByteArray, 0, -1)),
}, -1)),
}, schema.NewListLogicalType(), -1)), "struct { my_list *[]struct { str string } }"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
typ, err := schema.NewStructFromSchema(schema.NewSchema(schema.MustGroup(schema.NewGroupNode("schema", parquet.Repetitions.Repeated, schema.FieldList{tt.n}, -1))))
assert.NoError(t, err)
assert.Equal(t, tt.expected, typ.String())
})
}
}
func TestStructFromSchemaMaps(t *testing.T) {
tests := []struct {
name string
n schema.Node
expected string
}{
{"map string int", schema.MustGroup(schema.NewGroupNodeLogical("my_map", parquet.Repetitions.Required, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("key_value", parquet.Repetitions.Repeated, schema.FieldList{
schema.MustPrimitive(schema.NewPrimitiveNodeLogical("key", parquet.Repetitions.Required, schema.StringLogicalType{}, parquet.Types.ByteArray, 0, -1)),
schema.NewInt32Node("value", parquet.Repetitions.Optional, -1),
}, -1)),
}, schema.MapLogicalType{}, -1)), "struct { my_map map[string]*int32 }"},
{"nullable map string, int, required values", schema.MustGroup(schema.NewGroupNodeLogical("my_map", parquet.Repetitions.Optional, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("map", parquet.Repetitions.Repeated, schema.FieldList{
schema.NewByteArrayNode("str", parquet.Repetitions.Required, -1),
schema.NewInt32Node("num", parquet.Repetitions.Required, -1),
}, -1)),
}, schema.MapLogicalType{}, -1)), "struct { my_map *map[string]int32 }"},
{"map_key_value with missing value", schema.MustGroup(schema.NewGroupNodeConverted("my_map", parquet.Repetitions.Optional, schema.FieldList{
schema.MustGroup(schema.NewGroupNode("map", parquet.Repetitions.Repeated, schema.FieldList{
schema.NewByteArrayNode("key", parquet.Repetitions.Required, -1),
}, -1)),
}, schema.ConvertedTypes.MapKeyValue, -1)), "struct { my_map *map[string]bool }"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
typ, err := schema.NewStructFromSchema(schema.NewSchema(schema.MustGroup(schema.NewGroupNode("schema", parquet.Repetitions.Repeated, schema.FieldList{tt.n}, -1))))
assert.NoError(t, err)
assert.Equal(t, tt.expected, typ.String())
})
}
}
|
