zeroshade commented on a change in pull request #9671: URL: https://github.com/apache/arrow/pull/9671#discussion_r595195801
########## File path: go/parquet/internal/testutils/random_arrow.go ########## @@ -0,0 +1,475 @@ +// 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 testutils + +import ( + "github.com/apache/arrow/go/arrow" + "github.com/apache/arrow/go/arrow/array" + "github.com/apache/arrow/go/arrow/memory" + "golang.org/x/exp/rand" +) + +func RandomNonNull(dt arrow.DataType, size int) array.Interface { + switch dt.ID() { + case arrow.FLOAT32: + bldr := array.NewFloat32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]float32, size) + FillRandomFloat32(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.FLOAT64: + bldr := array.NewFloat64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]float64, size) + FillRandomFloat64(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.INT64: + bldr := array.NewInt64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int64, size) + FillRandomInt64(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.UINT64: + bldr := array.NewUint64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint64, size) + FillRandomUint64(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.INT32: + bldr := array.NewInt32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int32, size) + FillRandomInt32(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.UINT32: + bldr := array.NewUint32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint32, size) + FillRandomUint32(0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.INT16: + bldr := array.NewInt16Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int16, size) + FillRandomInt16(0, 0, 64, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.UINT16: + bldr := array.NewUint16Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint16, size) + FillRandomUint16(0, 0, 64, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.INT8: + bldr := array.NewInt8Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int8, size) + FillRandomInt8(0, 0, 64, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.UINT8: + bldr := array.NewUint8Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint8, size) + FillRandomUint8(0, 0, 64, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + case arrow.DATE32: + bldr := array.NewDate32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int32, size) + FillRandomInt32Max(0, 24, values) + + dates := make([]arrow.Date32, size) + for idx, val := range values { + dates[idx] = arrow.Date32(val) * 86400000 + } + bldr.AppendValues(dates, nil) + return bldr.NewArray() + case arrow.DATE64: + bldr := array.NewDate64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int64, size) + FillRandomInt64Max(0, 24, values) + + dates := make([]arrow.Date64, size) + for idx, val := range values { + dates[idx] = arrow.Date64(val) * 86400000 + } + bldr.AppendValues(dates, nil) + return bldr.NewArray() + case arrow.STRING: + bldr := array.NewStringBuilder(memory.DefaultAllocator) + defer bldr.Release() + for i := 0; i < size; i++ { + bldr.Append("test-string") + } + return bldr.NewArray() + case arrow.BINARY: + bldr := array.NewBinaryBuilder(memory.DefaultAllocator, arrow.BinaryTypes.Binary) + defer bldr.Release() + + buf := make([]byte, 12) + r := rand.New(rand.NewSource(0)) + for i := 0; i < size; i++ { + length := r.Intn(12-2+1) + 2 + r.Read(buf[:length]) + bldr.Append(buf[:length]) + } + return bldr.NewArray() + case arrow.FIXED_SIZE_BINARY: + bldr := array.NewFixedSizeBinaryBuilder(memory.DefaultAllocator, &arrow.FixedSizeBinaryType{ByteWidth: 10}) + defer bldr.Release() + + buf := make([]byte, 10) + r := rand.New(rand.NewSource(0)) + for i := 0; i < size; i++ { + r.Read(buf) + bldr.Append(buf) + } + return bldr.NewArray() + // case arrow.DECIMAL: + // dectype := dt.(*arrow.Decimal128Type) + // bldr := array.NewDecimal128Builder(memory.DefaultAllocator, dectype) + // defer bldr.Release() + + // data := RandomDecimals(int64(size), 0, dectype.Precision) + // bldr.AppendValues(arrow.Decimal128Traits.CastFromBytes(data), nil) + // return bldr.NewArray() + case arrow.BOOL: + bldr := array.NewBooleanBuilder(memory.DefaultAllocator) + defer bldr.Release() + + values := make([]bool, size) + FillRandomBooleans(0.5, 0, values) + bldr.AppendValues(values, nil) + return bldr.NewArray() + } + return nil +} + +func RandomNullable(dt arrow.DataType, size int, numNulls int) array.Interface { + switch dt.ID() { + case arrow.FLOAT32: + bldr := array.NewFloat32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]float32, size) + FillRandomFloat32(0, values) + + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.FLOAT64: + bldr := array.NewFloat64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]float64, size) + FillRandomFloat64(0, values) + + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.INT8: + bldr := array.NewInt8Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int8, size) + FillRandomInt8(0, 0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.UINT8: + bldr := array.NewUint8Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint8, size) + FillRandomUint8(0, 0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.INT16: + bldr := array.NewInt16Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int16, size) + FillRandomInt16(0, 0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.UINT16: + bldr := array.NewUint16Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint16, size) + FillRandomUint16(0, 0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.INT32: + bldr := array.NewInt32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int32, size) + FillRandomInt32Max(0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.UINT32: + bldr := array.NewUint32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint32, size) + FillRandomUint32Max(0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + + case arrow.INT64: + bldr := array.NewInt64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int64, size) + FillRandomInt64Max(0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.UINT64: + bldr := array.NewUint64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]uint64, size) + FillRandomUint64Max(0, 64, values) + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + bldr.AppendValues(values, valid) + return bldr.NewArray() + case arrow.DATE32: + bldr := array.NewDate32Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int32, size) + FillRandomInt32Max(0, 24, values) + + dates := make([]arrow.Date32, size) + for idx, val := range values { + dates[idx] = arrow.Date32(val) * 86400000 + } + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + bldr.AppendValues(dates, valid) + return bldr.NewArray() + case arrow.DATE64: + bldr := array.NewDate64Builder(memory.DefaultAllocator) + defer bldr.Release() + values := make([]int64, size) + FillRandomInt64Max(0, 24, values) + + dates := make([]arrow.Date64, size) + for idx, val := range values { + dates[idx] = arrow.Date64(val) * 86400000 + } + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + bldr.AppendValues(dates, valid) + return bldr.NewArray() + case arrow.BINARY: + bldr := array.NewBinaryBuilder(memory.DefaultAllocator, arrow.BinaryTypes.Binary) + defer bldr.Release() + + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + buf := make([]byte, 12) + r := rand.New(rand.NewSource(0)) + for i := 0; i < size; i++ { + if !valid[i] { + bldr.AppendNull() + continue + } + + length := r.Intn(12-2+1) + 2 + r.Read(buf[:length]) + bldr.Append(buf[:length]) + } + return bldr.NewArray() + case arrow.STRING: + bldr := array.NewStringBuilder(memory.DefaultAllocator) + defer bldr.Release() + + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + buf := make([]byte, 12) + r := rand.New(rand.NewSource(0)) + for i := 0; i < size; i++ { + if !valid[i] { + bldr.AppendNull() + continue + } + + length := r.Intn(12-2+1) + 2 + r.Read(buf[:length]) + // trivially force data to be valid UTF8 by making it all ASCII + for idx := range buf[:length] { + buf[idx] &= 0x7f + } + bldr.Append(string(buf[:length])) + } + return bldr.NewArray() + case arrow.FIXED_SIZE_BINARY: + bldr := array.NewFixedSizeBinaryBuilder(memory.DefaultAllocator, &arrow.FixedSizeBinaryType{ByteWidth: 10}) + defer bldr.Release() + + valid := make([]bool, size) + for idx := range valid { + valid[idx] = true + } + for i := 0; i < numNulls; i++ { + valid[i*2] = false + } + + buf := make([]byte, 10) + r := rand.New(rand.NewSource(0)) + for i := 0; i < size; i++ { + if !valid[i] { + bldr.AppendNull() + continue + } + + r.Read(buf) + bldr.Append(buf) + } + return bldr.NewArray() + // case arrow.DECIMAL: Review comment: same reply as https://github.com/apache/arrow/pull/9671#discussion_r595195594 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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