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 "arrow/builder.h" |
19 | |
20 | #include <sstream> |
21 | #include <string> |
22 | #include <utility> |
23 | #include <vector> |
24 | |
25 | #include "arrow/status.h" |
26 | #include "arrow/type.h" |
27 | #include "arrow/util/checked_cast.h" |
28 | |
29 | namespace arrow { |
30 | |
31 | class MemoryPool; |
32 | |
33 | // ---------------------------------------------------------------------- |
34 | // Helper functions |
35 | |
36 | #define BUILDER_CASE(ENUM, BuilderType) \ |
37 | case Type::ENUM: \ |
38 | out->reset(new BuilderType(type, pool)); \ |
39 | return Status::OK(); |
40 | |
41 | // Initially looked at doing this with vtables, but shared pointers makes it |
42 | // difficult |
43 | // |
44 | // TODO(wesm): come up with a less monolithic strategy |
45 | Status MakeBuilder(MemoryPool* pool, const std::shared_ptr<DataType>& type, |
46 | std::unique_ptr<ArrayBuilder>* out) { |
47 | switch (type->id()) { |
48 | case Type::NA: { |
49 | out->reset(new NullBuilder(pool)); |
50 | return Status::OK(); |
51 | } |
52 | BUILDER_CASE(UINT8, UInt8Builder); |
53 | BUILDER_CASE(INT8, Int8Builder); |
54 | BUILDER_CASE(UINT16, UInt16Builder); |
55 | BUILDER_CASE(INT16, Int16Builder); |
56 | BUILDER_CASE(UINT32, UInt32Builder); |
57 | BUILDER_CASE(INT32, Int32Builder); |
58 | BUILDER_CASE(UINT64, UInt64Builder); |
59 | BUILDER_CASE(INT64, Int64Builder); |
60 | BUILDER_CASE(DATE32, Date32Builder); |
61 | BUILDER_CASE(DATE64, Date64Builder); |
62 | BUILDER_CASE(TIME32, Time32Builder); |
63 | BUILDER_CASE(TIME64, Time64Builder); |
64 | BUILDER_CASE(TIMESTAMP, TimestampBuilder); |
65 | BUILDER_CASE(BOOL, BooleanBuilder); |
66 | BUILDER_CASE(HALF_FLOAT, HalfFloatBuilder); |
67 | BUILDER_CASE(FLOAT, FloatBuilder); |
68 | BUILDER_CASE(DOUBLE, DoubleBuilder); |
69 | BUILDER_CASE(STRING, StringBuilder); |
70 | BUILDER_CASE(BINARY, BinaryBuilder); |
71 | BUILDER_CASE(FIXED_SIZE_BINARY, FixedSizeBinaryBuilder); |
72 | BUILDER_CASE(DECIMAL, Decimal128Builder); |
73 | case Type::LIST: { |
74 | std::unique_ptr<ArrayBuilder> value_builder; |
75 | std::shared_ptr<DataType> value_type = |
76 | internal::checked_cast<const ListType&>(*type).value_type(); |
77 | RETURN_NOT_OK(MakeBuilder(pool, value_type, &value_builder)); |
78 | out->reset(new ListBuilder(pool, std::move(value_builder))); |
79 | return Status::OK(); |
80 | } |
81 | |
82 | case Type::STRUCT: { |
83 | const std::vector<std::shared_ptr<Field>>& fields = type->children(); |
84 | std::vector<std::shared_ptr<ArrayBuilder>> values_builder; |
85 | |
86 | for (auto it : fields) { |
87 | std::unique_ptr<ArrayBuilder> builder; |
88 | RETURN_NOT_OK(MakeBuilder(pool, it->type(), &builder)); |
89 | values_builder.emplace_back(std::move(builder)); |
90 | } |
91 | out->reset(new StructBuilder(type, pool, std::move(values_builder))); |
92 | return Status::OK(); |
93 | } |
94 | |
95 | default: { |
96 | return Status::NotImplemented("MakeBuilder: cannot construct builder for type " , |
97 | type->ToString()); |
98 | } |
99 | } |
100 | } |
101 | |
102 | } // namespace arrow |
103 | |