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| <div class="headertitle"><div class="title">name_mapping.h</div></div> |
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| <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div> |
| <div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * under the License.</span></div> |
| <div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div> |
| <div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#pragma once</span></div> |
| <div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <functional></span></div> |
| <div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <map></span></div> |
| <div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include <memory></span></div> |
| <div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include <optional></span></div> |
| <div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include <span></span></div> |
| <div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include <string></span></div> |
| <div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include <unordered_map></span></div> |
| <div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include <unordered_set></span></div> |
| <div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include <vector></span></div> |
| <div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div> |
| <div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include "iceberg/iceberg_export.h"</span></div> |
| <div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include "iceberg/result.h"</span></div> |
| <div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include "<a class="code" href="schema_8h.html">iceberg/schema.h</a>"</span></div> |
| <div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div> |
| <div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="keyword">namespace </span>iceberg {</div> |
| <div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div> |
| <div class="foldopen" id="foldopen00041" data-start="{" data-end="};"> |
| <div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="structiceberg_1_1MappedField.html"> 41</a></span><span class="keyword">struct </span>ICEBERG_EXPORT <a class="code hl_struct" href="structiceberg_1_1MappedField.html">MappedField</a> {</div> |
| <div class="line"><a id="l00043" name="l00043"></a><span class="lineno"><a class="line" href="structiceberg_1_1MappedField.html#ab6ecf22afa73722b39834438184f7562"> 43</a></span> std::unordered_set<std::string> <a class="code hl_variable" href="structiceberg_1_1MappedField.html#ab6ecf22afa73722b39834438184f7562">names</a>;</div> |
| <div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="structiceberg_1_1MappedField.html#a401380fe8dea49b9046450893614e696"> 45</a></span> std::optional<int32_t> <a class="code hl_variable" href="structiceberg_1_1MappedField.html#a401380fe8dea49b9046450893614e696">field_id</a>;</div> |
| <div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="structiceberg_1_1MappedField.html#a1f7a31efef059de622709f47131d6639"> 48</a></span> std::shared_ptr<class MappedFields> <a class="code hl_variable" href="structiceberg_1_1MappedField.html#a1f7a31efef059de622709f47131d6639">nested_mapping</a>;</div> |
| <div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code hl_struct" href="structiceberg_1_1MappedField.html">MappedField</a>& lhs, <span class="keyword">const</span> <a class="code hl_struct" href="structiceberg_1_1MappedField.html">MappedField</a>& rhs);</div> |
| <div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span>};</div> |
| </div> |
| <div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div> |
| <div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keyword">using </span>MappedFieldConstRef = std::reference_wrapper<const MappedField>;</div> |
| <div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div> |
| <div class="foldopen" id="foldopen00056" data-start="{" data-end="};"> |
| <div class="line"><a id="l00056" name="l00056"></a><span class="lineno"><a class="line" href="classiceberg_1_1MappedFields.html"> 56</a></span><span class="keyword">class </span>ICEBERG_EXPORT <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a> {</div> |
| <div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">static</span> std::unique_ptr<MappedFields> Make(std::vector<MappedField> fields);</div> |
| <div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> std::optional<MappedFieldConstRef> Field(int32_t <span class="keywordtype">id</span>) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div> |
| <div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> std::optional<int32_t> Id(std::string_view name) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div> |
| <div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">size_t</span> Size() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div> |
| <div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> std::span<const MappedField> fields() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div> |
| <div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> ICEBERG_EXPORT <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a>& lhs, <span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a>& rhs);</div> |
| <div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div> |
| <div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">explicit</span> <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a>(std::vector<MappedField> fields);</div> |
| <div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div> |
| <div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">const</span> std::unordered_map<std::string_view, int32_t>& LazyNameToId() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">const</span> std::unordered_map<int32_t, MappedFieldConstRef>& LazyIdToField() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> </div> |
| <div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> std::vector<MappedField> fields_;</div> |
| <div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div> |
| <div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// Lazy-initialized mappings</span></div> |
| <div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">mutable</span> std::unordered_map<std::string_view, int32_t> name_to_id_;</div> |
| <div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">mutable</span> std::unordered_map<int32_t, MappedFieldConstRef> id_to_field_;</div> |
| <div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>};</div> |
| </div> |
| <div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div> |
| <div class="foldopen" id="foldopen00096" data-start="{" data-end="};"> |
| <div class="line"><a id="l00096" name="l00096"></a><span class="lineno"><a class="line" href="classiceberg_1_1NameMapping.html"> 96</a></span><span class="keyword">class </span>ICEBERG_EXPORT <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a> {</div> |
| <div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">static</span> std::unique_ptr<NameMapping> Make(std::unique_ptr<MappedFields> fields);</div> |
| <div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div> |
| <div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">static</span> std::unique_ptr<NameMapping> Make(std::vector<MappedField> fields);</div> |
| <div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div> |
| <div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">static</span> std::unique_ptr<NameMapping> MakeEmpty();</div> |
| <div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div> |
| <div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> std::optional<MappedFieldConstRef> Find(int32_t <span class="keywordtype">id</span>) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div> |
| <div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> std::optional<MappedFieldConstRef> Find(std::span<const std::string> names) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div> |
| <div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> std::optional<MappedFieldConstRef> Find(<span class="keyword">const</span> std::string& name) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> </div> |
| <div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a>& AsMappedFields() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div> |
| <div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> ICEBERG_EXPORT <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a>& lhs, <span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a>& rhs);</div> |
| <div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> </div> |
| <div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">explicit</span> <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a>(std::unique_ptr<MappedFields> mapping);</div> |
| <div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div> |
| <div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">const</span> std::unordered_map<int32_t, MappedFieldConstRef>& LazyFieldsById() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">const</span> std::unordered_map<std::string, MappedFieldConstRef>& LazyFieldsByName() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div> |
| <div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> std::unique_ptr<MappedFields> mapping_;</div> |
| <div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div> |
| <div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="comment">// Lazy-initialized mappings</span></div> |
| <div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">mutable</span> std::unordered_map<int32_t, MappedFieldConstRef> fields_by_id_;</div> |
| <div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">mutable</span> std::unordered_map<std::string, MappedFieldConstRef> fields_by_name_;</div> |
| <div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span>};</div> |
| </div> |
| <div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> </div> |
| <div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span>ICEBERG_EXPORT std::string ToString(<span class="keyword">const</span> <a class="code hl_struct" href="structiceberg_1_1MappedField.html">MappedField</a>& field);</div> |
| <div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span>ICEBERG_EXPORT std::string ToString(<span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1MappedFields.html">MappedFields</a>& fields);</div> |
| <div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span>ICEBERG_EXPORT std::string ToString(<span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a>& mapping);</div> |
| <div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div> |
| <div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span>ICEBERG_EXPORT Result<std::unique_ptr<NameMapping>> CreateMapping(<span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1Schema.html">Schema</a>& schema);</div> |
| <div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> </div> |
| <div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span>ICEBERG_EXPORT Result<std::unique_ptr<NameMapping>> UpdateMapping(</div> |
| <div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">const</span> <a class="code hl_class" href="classiceberg_1_1NameMapping.html">NameMapping</a>& mapping,</div> |
| <div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">const</span> std::unordered_map<int32_t, std::shared_ptr<SchemaField>>& updates,</div> |
| <div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">const</span> std::multimap<int32_t, int32_t>& adds);</div> |
| <div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div> |
| <div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>} <span class="comment">// namespace iceberg</span></div> |
| <div class="ttc" id="aclassiceberg_1_1MappedFields_html"><div class="ttname"><a href="classiceberg_1_1MappedFields.html">iceberg::MappedFields</a></div><div class="ttdoc">A list of field mappings for child field of structs, maps, and lists.</div><div class="ttdef"><b>Definition</b> name_mapping.h:56</div></div> |
| <div class="ttc" id="aclassiceberg_1_1NameMapping_html"><div class="ttname"><a href="classiceberg_1_1NameMapping.html">iceberg::NameMapping</a></div><div class="ttdoc">Represents a mapping from external schema names to Iceberg type IDs.</div><div class="ttdef"><b>Definition</b> name_mapping.h:96</div></div> |
| <div class="ttc" id="aclassiceberg_1_1Schema_html"><div class="ttname"><a href="classiceberg_1_1Schema.html">iceberg::Schema</a></div><div class="ttdoc">A schema for a Table.</div><div class="ttdef"><b>Definition</b> schema.h:49</div></div> |
| <div class="ttc" id="aschema_8h_html"><div class="ttname"><a href="schema_8h.html">schema.h</a></div></div> |
| <div class="ttc" id="astructiceberg_1_1MappedField_html"><div class="ttname"><a href="structiceberg_1_1MappedField.html">iceberg::MappedField</a></div><div class="ttdoc">An immutable mapping between a field ID and a set of names.</div><div class="ttdef"><b>Definition</b> name_mapping.h:41</div></div> |
| <div class="ttc" id="astructiceberg_1_1MappedField_html_a1f7a31efef059de622709f47131d6639"><div class="ttname"><a href="structiceberg_1_1MappedField.html#a1f7a31efef059de622709f47131d6639">iceberg::MappedField::nested_mapping</a></div><div class="ttdeci">std::shared_ptr< class MappedFields > nested_mapping</div><div class="ttdoc">An optional list of field mappings for child field of structs, maps, and lists.</div><div class="ttdef"><b>Definition</b> name_mapping.h:48</div></div> |
| <div class="ttc" id="astructiceberg_1_1MappedField_html_a401380fe8dea49b9046450893614e696"><div class="ttname"><a href="structiceberg_1_1MappedField.html#a401380fe8dea49b9046450893614e696">iceberg::MappedField::field_id</a></div><div class="ttdeci">std::optional< int32_t > field_id</div><div class="ttdoc">An optional Iceberg field ID used when a field's name is present in names.</div><div class="ttdef"><b>Definition</b> name_mapping.h:45</div></div> |
| <div class="ttc" id="astructiceberg_1_1MappedField_html_ab6ecf22afa73722b39834438184f7562"><div class="ttname"><a href="structiceberg_1_1MappedField.html#ab6ecf22afa73722b39834438184f7562">iceberg::MappedField::names</a></div><div class="ttdeci">std::unordered_set< std::string > names</div><div class="ttdoc">A required list of 0 or more names for a field.</div><div class="ttdef"><b>Definition</b> name_mapping.h:43</div></div> |
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