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ARROW-10600: [Go] Implement Decimal256 #13792

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merged 13 commits into from
Aug 5, 2022
+1,772 −79
Merged

ARROW-10600: [Go] Implement Decimal256 #13792

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76d2319
first pass of decimal256
zeroshade Aug 3, 2022
6d02ecb
ipc, arrjson and so on
zeroshade Aug 3, 2022
aa4cfa9
forgot to add the bitWidth to the expected JSON
zeroshade Aug 4, 2022
f85b07b
Update go/arrow/datatype_fixedwidth.go
zeroshade Aug 4, 2022
b6e95e7
Update go/arrow/datatype_fixedwidth.go
zeroshade Aug 4, 2022
21aef6d
changes from review feedback
zeroshade Aug 4, 2022
c47ef3e
check FitsInPrecision when casting scalars
zeroshade Aug 4, 2022
45baa6d
default to decimal128 when missing bitWidth in JSON integration test
zeroshade Aug 4, 2022
bd44686
Merge branch 'master' into arrow-10600-decimal256
zeroshade Aug 5, 2022
d5df467
add missing AppendEmptyValue
zeroshade Aug 5, 2022
0c69de0
add Type method to decimal256
zeroshade Aug 5, 2022
71312b7
error conventions
zeroshade Aug 5, 2022
fe152cc
no more need for unsupportedArrayType
zeroshade Aug 5, 2022
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3 changes: 1 addition & 2 deletions dev/archery/archery/integration/datagen.py
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Expand Up @@ -1599,8 +1599,7 @@ def _temp_path():

generate_decimal128_case(),

generate_decimal256_case()
.skip_category('Go') # TODO(ARROW-7948): Decimal + Go
generate_decimal256_case()
.skip_category('JS'),

generate_datetime_case(),
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2 changes: 1 addition & 1 deletion docs/source/status.rst
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Expand Up @@ -46,7 +46,7 @@ Data Types
+-------------------+-------+-------+-------+------------+-------+-------+-------+
| Decimal128 | ✓ | ✓ | ✓ | | ✓ | ✓ | ✓ |
+-------------------+-------+-------+-------+------------+-------+-------+-------+
| Decimal256 | ✓ | ✓ | | | ✓ | | ✓ |
| Decimal256 | ✓ | ✓ | ✓ | | ✓ | | ✓ |
+-------------------+-------+-------+-------+------------+-------+-------+-------+
| Date32/64 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
+-------------------+-------+-------+-------+------------+-------+-------+-------+
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2 changes: 1 addition & 1 deletion go/arrow/array/array.go
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Expand Up @@ -166,7 +166,7 @@ func init() {
arrow.INTERVAL_MONTHS: func(data arrow.ArrayData) arrow.Array { return NewMonthIntervalData(data) },
arrow.INTERVAL_DAY_TIME: func(data arrow.ArrayData) arrow.Array { return NewDayTimeIntervalData(data) },
arrow.DECIMAL128: func(data arrow.ArrayData) arrow.Array { return NewDecimal128Data(data) },
arrow.DECIMAL256: unsupportedArrayType,
arrow.DECIMAL256: func(data arrow.ArrayData) arrow.Array { return NewDecimal256Data(data) },
arrow.LIST: func(data arrow.ArrayData) arrow.Array { return NewListData(data) },
arrow.STRUCT: func(data arrow.ArrayData) arrow.Array { return NewStructData(data) },
arrow.SPARSE_UNION: unsupportedArrayType,
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2 changes: 1 addition & 1 deletion go/arrow/array/array_test.go
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Expand Up @@ -74,6 +74,7 @@ func TestMakeFromData(t *testing.T) {
{name: "month_interval", d: arrow.FixedWidthTypes.MonthInterval},
{name: "day_time_interval", d: arrow.FixedWidthTypes.DayTimeInterval},
{name: "decimal128", d: &testDataType{arrow.DECIMAL128}},
{name: "decimal256", d: &testDataType{arrow.DECIMAL256}},
{name: "month_day_nano_interval", d: arrow.FixedWidthTypes.MonthDayNanoInterval},

{name: "list", d: &testDataType{arrow.LIST}, child: []arrow.ArrayData{
Expand Down Expand Up @@ -122,7 +123,6 @@ func TestMakeFromData(t *testing.T) {
// unsupported types
{name: "sparse union", d: &testDataType{arrow.SPARSE_UNION}, expPanic: true, expError: "unsupported data type: SPARSE_UNION"},
{name: "dense union", d: &testDataType{arrow.DENSE_UNION}, expPanic: true, expError: "unsupported data type: DENSE_UNION"},
{name: "decimal256", d: &testDataType{arrow.DECIMAL256}, expPanic: true, expError: "unsupported data type: DECIMAL256"},

// invalid types
{name: "invalid(-1)", d: &testDataType{arrow.Type(-1)}, expPanic: true, expError: "invalid data type: Type(-1)"},
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3 changes: 3 additions & 0 deletions go/arrow/array/builder.go
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Expand Up @@ -291,6 +291,9 @@ func NewBuilder(mem memory.Allocator, dtype arrow.DataType) Builder {
return NewDecimal128Builder(mem, typ)
}
case arrow.DECIMAL256:
if typ, ok := dtype.(*arrow.Decimal256Type); ok {
return NewDecimal256Builder(mem, typ)
}
case arrow.LIST:
typ := dtype.(*arrow.ListType)
return NewListBuilder(mem, typ.Elem())
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6 changes: 6 additions & 0 deletions go/arrow/array/compare.go
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Expand Up @@ -276,6 +276,9 @@ func Equal(left, right arrow.Array) bool {
case *Decimal128:
r := right.(*Decimal128)
return arrayEqualDecimal128(l, r)
case *Decimal256:
r := right.(*Decimal256)
return arrayEqualDecimal256(l, r)
case *Date32:
r := right.(*Date32)
return arrayEqualDate32(l, r)
Expand Down Expand Up @@ -520,6 +523,9 @@ func arrayApproxEqual(left, right arrow.Array, opt equalOption) bool {
case *Decimal128:
r := right.(*Decimal128)
return arrayEqualDecimal128(l, r)
case *Decimal256:
r := right.(*Decimal256)
return arrayEqualDecimal256(l, r)
case *Date32:
r := right.(*Date32)
return arrayEqualDate32(l, r)
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