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 "parquet/column_scanner.h"
19
20#include <cstdint>
21#include <memory>
22
23#include "parquet/column_reader.h"
24#include "parquet/util/memory.h"
25
26using arrow::MemoryPool;
27
28namespace parquet {
29
30std::shared_ptr<Scanner> Scanner::Make(std::shared_ptr<ColumnReader> col_reader,
31 int64_t batch_size, MemoryPool* pool) {
32 switch (col_reader->type()) {
33 case Type::BOOLEAN:
34 return std::make_shared<BoolScanner>(col_reader, batch_size, pool);
35 case Type::INT32:
36 return std::make_shared<Int32Scanner>(col_reader, batch_size, pool);
37 case Type::INT64:
38 return std::make_shared<Int64Scanner>(col_reader, batch_size, pool);
39 case Type::INT96:
40 return std::make_shared<Int96Scanner>(col_reader, batch_size, pool);
41 case Type::FLOAT:
42 return std::make_shared<FloatScanner>(col_reader, batch_size, pool);
43 case Type::DOUBLE:
44 return std::make_shared<DoubleScanner>(col_reader, batch_size, pool);
45 case Type::BYTE_ARRAY:
46 return std::make_shared<ByteArrayScanner>(col_reader, batch_size, pool);
47 case Type::FIXED_LEN_BYTE_ARRAY:
48 return std::make_shared<FixedLenByteArrayScanner>(col_reader, batch_size, pool);
49 default:
50 ParquetException::NYI("type reader not implemented");
51 }
52 // Unreachable code, but supress compiler warning
53 return std::shared_ptr<Scanner>(nullptr);
54}
55
56int64_t ScanAllValues(int32_t batch_size, int16_t* def_levels, int16_t* rep_levels,
57 uint8_t* values, int64_t* values_buffered,
58 parquet::ColumnReader* reader) {
59 switch (reader->type()) {
60 case parquet::Type::BOOLEAN:
61 return ScanAll<parquet::BoolReader>(batch_size, def_levels, rep_levels, values,
62 values_buffered, reader);
63 case parquet::Type::INT32:
64 return ScanAll<parquet::Int32Reader>(batch_size, def_levels, rep_levels, values,
65 values_buffered, reader);
66 case parquet::Type::INT64:
67 return ScanAll<parquet::Int64Reader>(batch_size, def_levels, rep_levels, values,
68 values_buffered, reader);
69 case parquet::Type::INT96:
70 return ScanAll<parquet::Int96Reader>(batch_size, def_levels, rep_levels, values,
71 values_buffered, reader);
72 case parquet::Type::FLOAT:
73 return ScanAll<parquet::FloatReader>(batch_size, def_levels, rep_levels, values,
74 values_buffered, reader);
75 case parquet::Type::DOUBLE:
76 return ScanAll<parquet::DoubleReader>(batch_size, def_levels, rep_levels, values,
77 values_buffered, reader);
78 case parquet::Type::BYTE_ARRAY:
79 return ScanAll<parquet::ByteArrayReader>(batch_size, def_levels, rep_levels, values,
80 values_buffered, reader);
81 case parquet::Type::FIXED_LEN_BYTE_ARRAY:
82 return ScanAll<parquet::FixedLenByteArrayReader>(batch_size, def_levels, rep_levels,
83 values, values_buffered, reader);
84 default:
85 parquet::ParquetException::NYI("type reader not implemented");
86 }
87 // Unreachable code, but supress compiler warning
88 return 0;
89}
90
91} // namespace parquet
92