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 #pragma once
19 
20 #include <memory>
21 #include <string>
22 
23 #include "arrow/status.h"
24 
25 #include "gandiva/visibility.h"
26 
27 namespace gandiva {
28 
29 class ConfigurationBuilder;
30 /// \brief runtime config for gandiva
31 ///
32 /// It contains elements to customize gandiva execution
33 /// at run time.
34 class GANDIVA_EXPORT Configuration {
35  public:
36   friend class ConfigurationBuilder;
37 
Configuration()38   Configuration() : optimize_(true) {}
Configuration(bool optimize)39   explicit Configuration(bool optimize) : optimize_(optimize) {}
40 
41   std::size_t Hash() const;
42   bool operator==(const Configuration& other) const;
43   bool operator!=(const Configuration& other) const;
44 
optimize()45   bool optimize() const { return optimize_; }
set_optimize(bool optimize)46   void set_optimize(bool optimize) { optimize_ = optimize; }
47 
48  private:
49   bool optimize_;
50 };
51 
52 /// \brief configuration builder for gandiva
53 ///
54 /// Provides a default configuration and convenience methods
55 /// to override specific values and build a custom instance
56 class GANDIVA_EXPORT ConfigurationBuilder {
57  public:
build()58   std::shared_ptr<Configuration> build() {
59     std::shared_ptr<Configuration> configuration(new Configuration());
60     return configuration;
61   }
62 
build(bool optimize)63   std::shared_ptr<Configuration> build(bool optimize) {
64     std::shared_ptr<Configuration> configuration(new Configuration(optimize));
65     return configuration;
66   }
67 
DefaultConfiguration()68   static std::shared_ptr<Configuration> DefaultConfiguration() {
69     return default_configuration_;
70   }
71 
72  private:
InitDefaultConfig()73   static std::shared_ptr<Configuration> InitDefaultConfig() {
74     std::shared_ptr<Configuration> configuration(new Configuration());
75     return configuration;
76   }
77 
78   static const std::shared_ptr<Configuration> default_configuration_;
79 };
80 
81 }  // namespace gandiva
82