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| 1 | +// Licensed to the Apache Software Foundation (ASF) under one |
| 2 | +// or more contributor license agreements. See the NOTICE file |
| 3 | +// distributed with this work for additional information |
| 4 | +// regarding copyright ownership. The ASF licenses this file |
| 5 | +// to you under the Apache License, Version 2.0 (the |
| 6 | +// "License"); you may not use this file except in compliance |
| 7 | +// with the License. You may obtain a copy of the License at |
| 8 | +// |
| 9 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +// |
| 11 | +// Unless required by applicable law or agreed to in writing, |
| 12 | +// software distributed under the License is distributed on an |
| 13 | +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 14 | +// KIND, either express or implied. See the License for the |
| 15 | +// specific language governing permissions and limitations |
| 16 | +// under the License. |
| 17 | + |
| 18 | +#include <ostream> |
| 19 | + |
| 20 | +#include "arrow/array.h" |
| 21 | +#include "arrow/table.h" |
| 22 | +#include "arrow/type.h" |
| 23 | +#include "arrow/type_traits.h" |
| 24 | +#include "arrow/types/list.h" |
| 25 | +#include "arrow/types/string.h" |
| 26 | +#include "arrow/types/struct.h" |
| 27 | +#include "arrow/pretty_print.h" |
| 28 | + |
| 29 | +namespace arrow { |
| 30 | + |
| 31 | +class ArrayPrinter : public ArrayVisitor { |
| 32 | + public: |
| 33 | + ArrayPrinter(const Array& array, std::ostream* sink) |
| 34 | + : array_(array), sink_(sink) {} |
| 35 | + |
| 36 | + Status Print() { |
| 37 | + return VisitArray(array_); |
| 38 | + } |
| 39 | + |
| 40 | + Status VisitArray(const Array& array) { |
| 41 | + return array.Accept(this); |
| 42 | + } |
| 43 | + |
| 44 | + template <typename T> |
| 45 | + typename std::enable_if<IsNumeric<T>::value, void>::type WriteDataValues( |
| 46 | + const T& array) { |
| 47 | + const auto data = array.raw_data(); |
| 48 | + for (int i = 0; i < array.length(); ++i) { |
| 49 | + if (i > 0) { |
| 50 | + (*sink_) << ", "; |
| 51 | + } |
| 52 | + if (array.IsNull(i)) { |
| 53 | + (*sink_) << "null"; |
| 54 | + } else { |
| 55 | + (*sink_) << data[i]; |
| 56 | + } |
| 57 | + } |
| 58 | + } |
| 59 | + |
| 60 | + // String (Utf8), Binary |
| 61 | + template <typename T> |
| 62 | + typename std::enable_if<std::is_base_of<BinaryArray, T>::value, void>::type |
| 63 | + WriteDataValues(const T& array) { |
| 64 | + int32_t length; |
| 65 | + for (int i = 0; i < array.length(); ++i) { |
| 66 | + if (i > 0) { |
| 67 | + (*sink_) << ", "; |
| 68 | + } |
| 69 | + if (array.IsNull(i)) { |
| 70 | + (*sink_) << "null"; |
| 71 | + } else { |
| 72 | + const char* buf = reinterpret_cast<const char*>(array.GetValue(i, &length)); |
| 73 | + (*sink_) << "\"" << std::string(buf, length) << "\""; |
| 74 | + } |
| 75 | + } |
| 76 | + } |
| 77 | + |
| 78 | + template <typename T> |
| 79 | + typename std::enable_if<std::is_base_of<BooleanArray, T>::value, void>::type |
| 80 | + WriteDataValues(const T& array) { |
| 81 | + for (int i = 0; i < array.length(); ++i) { |
| 82 | + if (i > 0) { |
| 83 | + (*sink_) << ", "; |
| 84 | + } |
| 85 | + if (array.IsNull(i)) { |
| 86 | + (*sink_) << "null"; |
| 87 | + } else { |
| 88 | + (*sink_) << (array.Value(i) ? "true" : "false"); |
| 89 | + } |
| 90 | + } |
| 91 | + } |
| 92 | + |
| 93 | + void OpenArray() { |
| 94 | + (*sink_) << "["; |
| 95 | + } |
| 96 | + |
| 97 | + void CloseArray() { |
| 98 | + (*sink_) << "]"; |
| 99 | + } |
| 100 | + |
| 101 | + template <typename T> |
| 102 | + Status WritePrimitive(const T& array) { |
| 103 | + OpenArray(); |
| 104 | + WriteDataValues(array); |
| 105 | + CloseArray(); |
| 106 | + return Status::OK(); |
| 107 | + } |
| 108 | + |
| 109 | + template <typename T> |
| 110 | + Status WriteVarBytes(const T& array) { |
| 111 | + OpenArray(); |
| 112 | + WriteDataValues(array); |
| 113 | + CloseArray(); |
| 114 | + return Status::OK(); |
| 115 | + } |
| 116 | + |
| 117 | + Status Visit(const NullArray& array) override { |
| 118 | + return Status::OK(); |
| 119 | + } |
| 120 | + |
| 121 | + Status Visit(const BooleanArray& array) override { return WritePrimitive(array); } |
| 122 | + |
| 123 | + Status Visit(const Int8Array& array) override { return WritePrimitive(array); } |
| 124 | + |
| 125 | + Status Visit(const Int16Array& array) override { return WritePrimitive(array); } |
| 126 | + |
| 127 | + Status Visit(const Int32Array& array) override { return WritePrimitive(array); } |
| 128 | + |
| 129 | + Status Visit(const Int64Array& array) override { return WritePrimitive(array); } |
| 130 | + |
| 131 | + Status Visit(const UInt8Array& array) override { return WritePrimitive(array); } |
| 132 | + |
| 133 | + Status Visit(const UInt16Array& array) override { return WritePrimitive(array); } |
| 134 | + |
| 135 | + Status Visit(const UInt32Array& array) override { return WritePrimitive(array); } |
| 136 | + |
| 137 | + Status Visit(const UInt64Array& array) override { return WritePrimitive(array); } |
| 138 | + |
| 139 | + Status Visit(const HalfFloatArray& array) override { return WritePrimitive(array); } |
| 140 | + |
| 141 | + Status Visit(const FloatArray& array) override { return WritePrimitive(array); } |
| 142 | + |
| 143 | + Status Visit(const DoubleArray& array) override { return WritePrimitive(array); } |
| 144 | + |
| 145 | + Status Visit(const StringArray& array) override { return WriteVarBytes(array); } |
| 146 | + |
| 147 | + Status Visit(const BinaryArray& array) override { return WriteVarBytes(array); } |
| 148 | + |
| 149 | + Status Visit(const DateArray& array) override { return Status::NotImplemented("date"); } |
| 150 | + |
| 151 | + Status Visit(const TimeArray& array) override { return Status::NotImplemented("time"); } |
| 152 | + |
| 153 | + Status Visit(const TimestampArray& array) override { |
| 154 | + return Status::NotImplemented("timestamp"); |
| 155 | + } |
| 156 | + |
| 157 | + Status Visit(const IntervalArray& array) override { |
| 158 | + return Status::NotImplemented("interval"); |
| 159 | + } |
| 160 | + |
| 161 | + Status Visit(const DecimalArray& array) override { |
| 162 | + return Status::NotImplemented("decimal"); |
| 163 | + } |
| 164 | + |
| 165 | + Status Visit(const ListArray& array) override { |
| 166 | + // auto type = static_cast<const ListType*>(array.type().get()); |
| 167 | + // for (size_t i = 0; i < fields.size(); ++i) { |
| 168 | + // RETURN_NOT_OK(VisitArray(fields[i]->name, *arrays[i].get())); |
| 169 | + // } |
| 170 | + // return WriteChildren(type->children(), {array.values()}); |
| 171 | + return Status::OK(); |
| 172 | + } |
| 173 | + |
| 174 | + Status Visit(const StructArray& array) override { |
| 175 | + // auto type = static_cast<const StructType*>(array.type().get()); |
| 176 | + // for (size_t i = 0; i < fields.size(); ++i) { |
| 177 | + // RETURN_NOT_OK(VisitArray(fields[i]->name, *arrays[i].get())); |
| 178 | + // } |
| 179 | + // return WriteChildren(type->children(), array.fields()); |
| 180 | + return Status::OK(); |
| 181 | + } |
| 182 | + |
| 183 | + Status Visit(const UnionArray& array) override { |
| 184 | + return Status::NotImplemented("union"); |
| 185 | + } |
| 186 | + |
| 187 | + private: |
| 188 | + const Array& array_; |
| 189 | + std::ostream* sink_; |
| 190 | +}; |
| 191 | + |
| 192 | +Status PrettyPrint(const Array& arr, std::ostream* sink) { |
| 193 | + ArrayPrinter printer(arr, sink); |
| 194 | + return printer.Print(); |
| 195 | +} |
| 196 | + |
| 197 | +Status PrettyPrint(const RecordBatch& batch, std::ostream* sink) { |
| 198 | + for (int i = 0; i < batch.num_columns(); ++i) { |
| 199 | + const std::string& name = batch.column_name(i); |
| 200 | + (*sink) << name << ": "; |
| 201 | + RETURN_NOT_OK(PrettyPrint(*batch.column(i).get(), sink)); |
| 202 | + (*sink) << "\n"; |
| 203 | + } |
| 204 | + return Status::OK(); |
| 205 | +} |
| 206 | + |
| 207 | +} // namespace arrow |
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