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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/common/macro/src/row/utils.rs`."><title>utils.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="common_macro" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../../static.files/storage-41dd4d93.js"></script><script defer src="../../../static.files/src-script-813739b1.js"></script><script defer src="../../../src-files.js"></script><script defer src="../../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><h1><div class="sub-heading">common_macro/row/</div>utils.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright 2023 Greptime Team
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<a href=#2 id=2 data-nosnippet>2</a>//
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<a href=#3 id=3 data-nosnippet>3</a>// Licensed under the Apache License, Version 2.0 (the "License");
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<a href=#4 id=4 data-nosnippet>4</a>// you may not use this file except in compliance with the License.
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<a href=#5 id=5 data-nosnippet>5</a>// You may obtain a copy of the License at
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<a href=#6 id=6 data-nosnippet>6</a>//
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<a href=#7 id=7 data-nosnippet>7</a>// http://www.apache.org/licenses/LICENSE-2.0
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<a href=#8 id=8 data-nosnippet>8</a>//
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<a href=#9 id=9 data-nosnippet>9</a>// Unless required by applicable law or agreed to in writing, software
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<a href=#10 id=10 data-nosnippet>10</a>// distributed under the License is distributed on an "AS IS" BASIS,
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<a href=#11 id=11 data-nosnippet>11</a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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<a href=#12 id=12 data-nosnippet>12</a>// See the License for the specific language governing permissions and
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<a href=#13 id=13 data-nosnippet>13</a>// limitations under the License.
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<a href=#14 id=14 data-nosnippet>14</a>
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<a href=#15 id=15 data-nosnippet>15</a></span><span class="kw">use </span>std::collections::HashMap;
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<a href=#16 id=16 data-nosnippet>16</a>
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<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>greptime_proto::v1::column_data_type_extension::TypeExt;
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<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>greptime_proto::v1::{ColumnDataType, ColumnDataTypeExtension, JsonTypeExtension};
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<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>once_cell::sync::Lazy;
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<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>quote::format_ident;
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<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>syn::{
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<a href=#22 id=22 data-nosnippet>22</a> AngleBracketedGenericArguments, Data, DataStruct, Fields, FieldsNamed, GenericArgument, Ident,
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<a href=#23 id=23 data-nosnippet>23</a> Path, PathArguments, PathSegment, <span class="prelude-ty">Result</span>, Type, TypePath, TypeReference,
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<a href=#24 id=24 data-nosnippet>24</a>};
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<a href=#25 id=25 data-nosnippet>25</a>
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<a href=#26 id=26 data-nosnippet>26</a><span class="kw">use </span><span class="kw">crate</span>::row::attribute::{ColumnAttribute, find_column_attribute, parse_column_attribute};
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<a href=#27 id=27 data-nosnippet>27</a>
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<a href=#28 id=28 data-nosnippet>28</a><span class="kw">static </span>SEMANTIC_TYPES: Lazy<HashMap<<span class="kw-2">&</span><span class="lifetime">'static </span>str, SemanticType>> = Lazy::new(|| {
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<a href=#29 id=29 data-nosnippet>29</a> HashMap::from([
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<a href=#30 id=30 data-nosnippet>30</a> (<span class="string">"field"</span>, SemanticType::Field),
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<a href=#31 id=31 data-nosnippet>31</a> (<span class="string">"tag"</span>, SemanticType::Tag),
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<a href=#32 id=32 data-nosnippet>32</a> (<span class="string">"timestamp"</span>, SemanticType::Timestamp),
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<a href=#33 id=33 data-nosnippet>33</a> ])
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<a href=#34 id=34 data-nosnippet>34</a>});
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<a href=#35 id=35 data-nosnippet>35</a>
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<a href=#36 id=36 data-nosnippet>36</a><span class="kw">static </span>DATATYPE_TO_COLUMN_DATA_TYPE: Lazy<HashMap<<span class="kw-2">&</span><span class="lifetime">'static </span>str, ColumnDataTypeWithExtension>> =
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<a href=#37 id=37 data-nosnippet>37</a> Lazy::new(|| {
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<a href=#38 id=38 data-nosnippet>38</a> HashMap::from([
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<a href=#39 id=39 data-nosnippet>39</a> <span class="comment">// Timestamp
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<a href=#40 id=40 data-nosnippet>40</a> </span>(<span class="string">"timestampsecond"</span>, ColumnDataType::TimestampSecond.into()),
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<a href=#41 id=41 data-nosnippet>41</a> (
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<a href=#42 id=42 data-nosnippet>42</a> <span class="string">"timestampmillisecond"</span>,
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<a href=#43 id=43 data-nosnippet>43</a> ColumnDataType::TimestampMillisecond.into(),
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<a href=#44 id=44 data-nosnippet>44</a> ),
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<a href=#45 id=45 data-nosnippet>45</a> (
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<a href=#46 id=46 data-nosnippet>46</a> <span class="string">"timestampmicrosecond"</span>,
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<a href=#47 id=47 data-nosnippet>47</a> ColumnDataType::TimestampMicrosecond.into(),
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<a href=#48 id=48 data-nosnippet>48</a> ),
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<a href=#49 id=49 data-nosnippet>49</a> (
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<a href=#50 id=50 data-nosnippet>50</a> <span class="string">"timestampnanosecond"</span>,
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<a href=#51 id=51 data-nosnippet>51</a> ColumnDataType::TimestampNanosecond.into(),
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<a href=#52 id=52 data-nosnippet>52</a> ),
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<a href=#53 id=53 data-nosnippet>53</a> <span class="comment">// Date
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<a href=#54 id=54 data-nosnippet>54</a> </span>(<span class="string">"date"</span>, ColumnDataType::Date.into()),
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<a href=#55 id=55 data-nosnippet>55</a> (<span class="string">"datetime"</span>, ColumnDataType::Datetime.into()),
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<a href=#56 id=56 data-nosnippet>56</a> <span class="comment">// Time
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<a href=#57 id=57 data-nosnippet>57</a> </span>(<span class="string">"timesecond"</span>, ColumnDataType::TimeSecond.into()),
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<a href=#58 id=58 data-nosnippet>58</a> (<span class="string">"timemillisecond"</span>, ColumnDataType::TimeMillisecond.into()),
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<a href=#59 id=59 data-nosnippet>59</a> (<span class="string">"timemicrosecond"</span>, ColumnDataType::TimeMicrosecond.into()),
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<a href=#60 id=60 data-nosnippet>60</a> (<span class="string">"timenanosecond"</span>, ColumnDataType::TimeNanosecond.into()),
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<a href=#61 id=61 data-nosnippet>61</a> <span class="comment">// Others
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<a href=#62 id=62 data-nosnippet>62</a> </span>(<span class="string">"string"</span>, ColumnDataType::String.into()),
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<a href=#63 id=63 data-nosnippet>63</a> (<span class="string">"json"</span>, ColumnDataTypeWithExtension::json()),
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<a href=#64 id=64 data-nosnippet>64</a> <span class="comment">// TODO(weny): support vector and decimal128.
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<a href=#65 id=65 data-nosnippet>65</a> </span>])
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<a href=#66 id=66 data-nosnippet>66</a> });
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<a href=#67 id=67 data-nosnippet>67</a>
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<a href=#68 id=68 data-nosnippet>68</a><span class="kw">static </span>PRIMITIVE_TYPE_TO_COLUMN_DATA_TYPE: Lazy<HashMap<<span class="kw-2">&</span><span class="lifetime">'static </span>str, ColumnDataType>> =
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<a href=#69 id=69 data-nosnippet>69</a> Lazy::new(|| {
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<a href=#70 id=70 data-nosnippet>70</a> HashMap::from([
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<a href=#71 id=71 data-nosnippet>71</a> (<span class="string">"i8"</span>, ColumnDataType::Int8),
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<a href=#72 id=72 data-nosnippet>72</a> (<span class="string">"i16"</span>, ColumnDataType::Int16),
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<a href=#73 id=73 data-nosnippet>73</a> (<span class="string">"i32"</span>, ColumnDataType::Int32),
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<a href=#74 id=74 data-nosnippet>74</a> (<span class="string">"i64"</span>, ColumnDataType::Int64),
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<a href=#75 id=75 data-nosnippet>75</a> (<span class="string">"u8"</span>, ColumnDataType::Uint8),
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<a href=#76 id=76 data-nosnippet>76</a> (<span class="string">"u16"</span>, ColumnDataType::Uint16),
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<a href=#77 id=77 data-nosnippet>77</a> (<span class="string">"u32"</span>, ColumnDataType::Uint32),
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<a href=#78 id=78 data-nosnippet>78</a> (<span class="string">"u64"</span>, ColumnDataType::Uint64),
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<a href=#79 id=79 data-nosnippet>79</a> (<span class="string">"f32"</span>, ColumnDataType::Float32),
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<a href=#80 id=80 data-nosnippet>80</a> (<span class="string">"f64"</span>, ColumnDataType::Float64),
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<a href=#81 id=81 data-nosnippet>81</a> (<span class="string">"bool"</span>, ColumnDataType::Boolean),
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<a href=#82 id=82 data-nosnippet>82</a> ])
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<a href=#83 id=83 data-nosnippet>83</a> });
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<a href=#84 id=84 data-nosnippet>84</a>
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<a href=#85 id=85 data-nosnippet>85</a><span class="doccomment">/// Extract the fields of a struct.
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<a href=#86 id=86 data-nosnippet>86</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>extract_struct_fields(data: <span class="kw-2">&</span>Data) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>FieldsNamed> {
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<a href=#87 id=87 data-nosnippet>87</a> <span class="kw">let </span>Data::Struct(DataStruct {
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<a href=#88 id=88 data-nosnippet>88</a> fields: Fields::Named(named),
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<a href=#89 id=89 data-nosnippet>89</a> ..
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<a href=#90 id=90 data-nosnippet>90</a> }) = <span class="kw-2">&</span>data
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<a href=#91 id=91 data-nosnippet>91</a> <span class="kw">else </span>{
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<a href=#92 id=92 data-nosnippet>92</a> <span class="kw">return </span><span class="prelude-val">None</span>;
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<a href=#93 id=93 data-nosnippet>93</a> };
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<a href=#94 id=94 data-nosnippet>94</a>
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<a href=#95 id=95 data-nosnippet>95</a> <span class="prelude-val">Some</span>(named)
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<a href=#96 id=96 data-nosnippet>96</a>}
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<a href=#97 id=97 data-nosnippet>97</a>
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<a href=#98 id=98 data-nosnippet>98</a><span class="doccomment">/// Convert an identifier to a semantic type.
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<a href=#99 id=99 data-nosnippet>99</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>semantic_type_from_str(ident: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><SemanticType> {
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<a href=#100 id=100 data-nosnippet>100</a> <span class="comment">// Ignores the case of the identifier.
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<a href=#101 id=101 data-nosnippet>101</a> </span><span class="kw">let </span>lowercase = ident.to_lowercase();
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<a href=#102 id=102 data-nosnippet>102</a> <span class="kw">let </span>lowercase_str = lowercase.as_str();
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<a href=#103 id=103 data-nosnippet>103</a> SEMANTIC_TYPES.get(lowercase_str).cloned()
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<a href=#104 id=104 data-nosnippet>104</a>}
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<a href=#105 id=105 data-nosnippet>105</a>
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<a href=#106 id=106 data-nosnippet>106</a><span class="doccomment">/// Convert a field type to a column data type.
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<a href=#107 id=107 data-nosnippet>107</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>column_data_type_from_str(ident: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><ColumnDataTypeWithExtension> {
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<a href=#108 id=108 data-nosnippet>108</a> <span class="comment">// Ignores the case of the identifier.
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<a href=#109 id=109 data-nosnippet>109</a> </span><span class="kw">let </span>lowercase = ident.to_lowercase();
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<a href=#110 id=110 data-nosnippet>110</a> <span class="kw">let </span>lowercase_str = lowercase.as_str();
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<a href=#111 id=111 data-nosnippet>111</a> DATATYPE_TO_COLUMN_DATA_TYPE.get(lowercase_str).cloned()
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<a href=#112 id=112 data-nosnippet>112</a>}
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<a href=#113 id=113 data-nosnippet>113</a>
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<a href=#114 id=114 data-nosnippet>114</a><span class="attr">#[derive(Default, Clone, Copy)]
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<a href=#115 id=115 data-nosnippet>115</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>SemanticType {
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<a href=#116 id=116 data-nosnippet>116</a> <span class="attr">#[default]
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<a href=#117 id=117 data-nosnippet>117</a> </span>Field,
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<a href=#118 id=118 data-nosnippet>118</a> Tag,
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<a href=#119 id=119 data-nosnippet>119</a> Timestamp,
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<a href=#120 id=120 data-nosnippet>120</a>}
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<a href=#121 id=121 data-nosnippet>121</a>
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<a href=#122 id=122 data-nosnippet>122</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>FieldType<<span class="lifetime">'a</span>> {
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<a href=#123 id=123 data-nosnippet>123</a> Required(<span class="kw-2">&</span><span class="lifetime">'a </span>Type),
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<a href=#124 id=124 data-nosnippet>124</a> Optional(<span class="kw-2">&</span><span class="lifetime">'a </span>Type),
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<a href=#125 id=125 data-nosnippet>125</a>}
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<a href=#126 id=126 data-nosnippet>126</a>
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<a href=#127 id=127 data-nosnippet>127</a><span class="kw">impl </span>FieldType<<span class="lifetime">'_</span>> {
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<a href=#128 id=128 data-nosnippet>128</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>is_optional(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
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<a href=#129 id=129 data-nosnippet>129</a> <span class="macro">matches!</span>(<span class="self">self</span>, FieldType::Optional(<span class="kw">_</span>))
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<a href=#130 id=130 data-nosnippet>130</a> }
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<a href=#131 id=131 data-nosnippet>131</a>
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<a href=#132 id=132 data-nosnippet>132</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>extract_ident(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>Ident> {
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<a href=#133 id=133 data-nosnippet>133</a> <span class="kw">match </span><span class="self">self </span>{
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<a href=#134 id=134 data-nosnippet>134</a> FieldType::Required(ty) => extract_ident_from_type(ty),
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<a href=#135 id=135 data-nosnippet>135</a> FieldType::Optional(ty) => extract_ident_from_type(ty),
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<a href=#136 id=136 data-nosnippet>136</a> }
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<a href=#137 id=137 data-nosnippet>137</a> }
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<a href=#138 id=138 data-nosnippet>138</a>}
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<a href=#139 id=139 data-nosnippet>139</a>
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<a href=#140 id=140 data-nosnippet>140</a><span class="kw">fn </span>field_type(ty: <span class="kw-2">&</span>Type) -> FieldType<<span class="lifetime">'_</span>> {
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<a href=#141 id=141 data-nosnippet>141</a> <span class="kw">if let </span>Type::Reference(TypeReference { elem, .. }) = ty {
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<a href=#142 id=142 data-nosnippet>142</a> <span class="kw">return </span>field_type(elem);
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<a href=#143 id=143 data-nosnippet>143</a> }
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<a href=#144 id=144 data-nosnippet>144</a>
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<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">if let </span>Type::Path(TypePath {
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<a href=#146 id=146 data-nosnippet>146</a> qself: <span class="kw">_</span>,
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<a href=#147 id=147 data-nosnippet>147</a> path: Path {
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<a href=#148 id=148 data-nosnippet>148</a> leading_colon,
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<a href=#149 id=149 data-nosnippet>149</a> segments,
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<a href=#150 id=150 data-nosnippet>150</a> },
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<a href=#151 id=151 data-nosnippet>151</a> }) = ty
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<a href=#152 id=152 data-nosnippet>152</a> && leading_colon.is_none()
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<a href=#153 id=153 data-nosnippet>153</a> && segments.len() == <span class="number">1
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<a href=#154 id=154 data-nosnippet>154</a> </span>&& <span class="kw">let </span><span class="prelude-val">Some</span>(PathSegment {
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<a href=#155 id=155 data-nosnippet>155</a> ident,
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<a href=#156 id=156 data-nosnippet>156</a> arguments: PathArguments::AngleBracketed(AngleBracketedGenericArguments { args, .. }),
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<a href=#157 id=157 data-nosnippet>157</a> }) = segments.first()
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<a href=#158 id=158 data-nosnippet>158</a> && <span class="kw">let </span>(<span class="number">1</span>, <span class="prelude-val">Some</span>(GenericArgument::Type(t))) = (args.len(), args.first())
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<a href=#159 id=159 data-nosnippet>159</a> && ident == <span class="string">"Option"
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<a href=#160 id=160 data-nosnippet>160</a> </span>{
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<a href=#161 id=161 data-nosnippet>161</a> <span class="kw">return </span>FieldType::Optional(t);
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<a href=#162 id=162 data-nosnippet>162</a> }
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<a href=#163 id=163 data-nosnippet>163</a>
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<a href=#164 id=164 data-nosnippet>164</a> FieldType::Required(ty)
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<a href=#165 id=165 data-nosnippet>165</a>}
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<a href=#166 id=166 data-nosnippet>166</a>
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<a href=#167 id=167 data-nosnippet>167</a><span class="kw">fn </span>extract_ident_from_type(ty: <span class="kw-2">&</span>Type) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>Ident> {
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<a href=#168 id=168 data-nosnippet>168</a> <span class="kw">match </span>ty {
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<a href=#169 id=169 data-nosnippet>169</a> Type::Path(TypePath { qself: <span class="prelude-val">None</span>, path }) => path.get_ident(),
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<a href=#170 id=170 data-nosnippet>170</a> Type::Reference(type_ref) => extract_ident_from_type(<span class="kw-2">&</span>type_ref.elem),
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<a href=#171 id=171 data-nosnippet>171</a> Type::Group(type_group) => extract_ident_from_type(<span class="kw-2">&</span>type_group.elem),
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<a href=#172 id=172 data-nosnippet>172</a> <span class="kw">_ </span>=> <span class="prelude-val">None</span>,
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<a href=#173 id=173 data-nosnippet>173</a> }
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<a href=#174 id=174 data-nosnippet>174</a>}
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<a href=#175 id=175 data-nosnippet>175</a>
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<a href=#176 id=176 data-nosnippet>176</a><span class="doccomment">/// Convert a semantic type to a proto semantic type.
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<a href=#177 id=177 data-nosnippet>177</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>convert_semantic_type_to_proto_semantic_type(
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<a href=#178 id=178 data-nosnippet>178</a> semantic_type: SemanticType,
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<a href=#179 id=179 data-nosnippet>179</a>) -> greptime_proto::v1::SemanticType {
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|
<a href=#180 id=180 data-nosnippet>180</a> <span class="kw">match </span>semantic_type {
|
|
<a href=#181 id=181 data-nosnippet>181</a> SemanticType::Field => greptime_proto::v1::SemanticType::Field,
|
|
<a href=#182 id=182 data-nosnippet>182</a> SemanticType::Tag => greptime_proto::v1::SemanticType::Tag,
|
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<a href=#183 id=183 data-nosnippet>183</a> SemanticType::Timestamp => greptime_proto::v1::SemanticType::Timestamp,
|
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<a href=#184 id=184 data-nosnippet>184</a> }
|
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<a href=#185 id=185 data-nosnippet>185</a>}
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<a href=#186 id=186 data-nosnippet>186</a>
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<a href=#187 id=187 data-nosnippet>187</a><span class="attr">#[derive(Debug, Clone)]
|
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<a href=#188 id=188 data-nosnippet>188</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>ColumnDataTypeWithExtension {
|
|
<a href=#189 id=189 data-nosnippet>189</a> <span class="kw">pub</span>(<span class="kw">crate</span>) data_type: ColumnDataType,
|
|
<a href=#190 id=190 data-nosnippet>190</a> <span class="kw">pub</span>(<span class="kw">crate</span>) extension: <span class="prelude-ty">Option</span><ColumnDataTypeExtension>,
|
|
<a href=#191 id=191 data-nosnippet>191</a>}
|
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<a href=#192 id=192 data-nosnippet>192</a>
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<a href=#193 id=193 data-nosnippet>193</a><span class="kw">impl </span>ColumnDataTypeWithExtension {
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|
<a href=#194 id=194 data-nosnippet>194</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>json() -> <span class="self">Self </span>{
|
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<a href=#195 id=195 data-nosnippet>195</a> <span class="self">Self </span>{
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<a href=#196 id=196 data-nosnippet>196</a> data_type: ColumnDataType::Json,
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<a href=#197 id=197 data-nosnippet>197</a> extension: <span class="prelude-val">Some</span>(ColumnDataTypeExtension {
|
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<a href=#198 id=198 data-nosnippet>198</a> type_ext: <span class="prelude-val">Some</span>(TypeExt::JsonType(JsonTypeExtension::JsonBinary.into())),
|
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<a href=#199 id=199 data-nosnippet>199</a> }),
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<a href=#200 id=200 data-nosnippet>200</a> }
|
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<a href=#201 id=201 data-nosnippet>201</a> }
|
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<a href=#202 id=202 data-nosnippet>202</a>}
|
|
<a href=#203 id=203 data-nosnippet>203</a>
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<a href=#204 id=204 data-nosnippet>204</a><span class="kw">impl </span>From<ColumnDataType> <span class="kw">for </span>ColumnDataTypeWithExtension {
|
|
<a href=#205 id=205 data-nosnippet>205</a> <span class="kw">fn </span>from(data_type: ColumnDataType) -> <span class="self">Self </span>{
|
|
<a href=#206 id=206 data-nosnippet>206</a> <span class="self">Self </span>{
|
|
<a href=#207 id=207 data-nosnippet>207</a> data_type,
|
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<a href=#208 id=208 data-nosnippet>208</a> extension: <span class="prelude-val">None</span>,
|
|
<a href=#209 id=209 data-nosnippet>209</a> }
|
|
<a href=#210 id=210 data-nosnippet>210</a> }
|
|
<a href=#211 id=211 data-nosnippet>211</a>}
|
|
<a href=#212 id=212 data-nosnippet>212</a>
|
|
<a href=#213 id=213 data-nosnippet>213</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>ParsedField<<span class="lifetime">'a</span>> {
|
|
<a href=#214 id=214 data-nosnippet>214</a> <span class="kw">pub</span>(<span class="kw">crate</span>) ident: <span class="kw-2">&</span><span class="lifetime">'a </span>Ident,
|
|
<a href=#215 id=215 data-nosnippet>215</a> <span class="kw">pub</span>(<span class="kw">crate</span>) field_type: FieldType<<span class="lifetime">'a</span>>,
|
|
<a href=#216 id=216 data-nosnippet>216</a> <span class="kw">pub</span>(<span class="kw">crate</span>) column_data_type: <span class="prelude-ty">Option</span><ColumnDataTypeWithExtension>,
|
|
<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">pub</span>(<span class="kw">crate</span>) column_attribute: ColumnAttribute,
|
|
<a href=#218 id=218 data-nosnippet>218</a>}
|
|
<a href=#219 id=219 data-nosnippet>219</a>
|
|
<a href=#220 id=220 data-nosnippet>220</a><span class="doccomment">/// Parse fields from fields named.
|
|
<a href=#221 id=221 data-nosnippet>221</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>parse_fields_from_fields_named(named: <span class="kw-2">&</span>FieldsNamed) -> <span class="prelude-ty">Result</span><Vec<ParsedField<<span class="lifetime">'_</span>>>> {
|
|
<a href=#222 id=222 data-nosnippet>222</a> <span class="prelude-val">Ok</span>(named
|
|
<a href=#223 id=223 data-nosnippet>223</a> .named
|
|
<a href=#224 id=224 data-nosnippet>224</a> .iter()
|
|
<a href=#225 id=225 data-nosnippet>225</a> .map(|field| {
|
|
<a href=#226 id=226 data-nosnippet>226</a> <span class="kw">let </span>ident = field.ident.as_ref().expect(<span class="string">"field must have an ident"</span>);
|
|
<a href=#227 id=227 data-nosnippet>227</a> <span class="kw">let </span>field_type = field_type(<span class="kw-2">&</span>field.ty);
|
|
<a href=#228 id=228 data-nosnippet>228</a> <span class="kw">let </span>column_data_type = field_type
|
|
<a href=#229 id=229 data-nosnippet>229</a> .extract_ident()
|
|
<a href=#230 id=230 data-nosnippet>230</a> .and_then(convert_primitive_type_to_column_data_type);
|
|
<a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>column_attribute = find_column_attribute(<span class="kw-2">&</span>field.attrs)
|
|
<a href=#232 id=232 data-nosnippet>232</a> .map(parse_column_attribute)
|
|
<a href=#233 id=233 data-nosnippet>233</a> .transpose()<span class="question-mark">?
|
|
<a href=#234 id=234 data-nosnippet>234</a> </span>.unwrap_or_default();
|
|
<a href=#235 id=235 data-nosnippet>235</a>
|
|
<a href=#236 id=236 data-nosnippet>236</a> <span class="prelude-val">Ok</span>(ParsedField {
|
|
<a href=#237 id=237 data-nosnippet>237</a> ident,
|
|
<a href=#238 id=238 data-nosnippet>238</a> field_type,
|
|
<a href=#239 id=239 data-nosnippet>239</a> column_data_type,
|
|
<a href=#240 id=240 data-nosnippet>240</a> column_attribute,
|
|
<a href=#241 id=241 data-nosnippet>241</a> })
|
|
<a href=#242 id=242 data-nosnippet>242</a> })
|
|
<a href=#243 id=243 data-nosnippet>243</a> .collect::<<span class="prelude-ty">Result</span><Vec<ParsedField<<span class="lifetime">'_</span>>>>>()<span class="question-mark">?
|
|
<a href=#244 id=244 data-nosnippet>244</a> </span>.into_iter()
|
|
<a href=#245 id=245 data-nosnippet>245</a> .filter(|field| !field.column_attribute.skip)
|
|
<a href=#246 id=246 data-nosnippet>246</a> .collect::<Vec<<span class="kw">_</span>>>())
|
|
<a href=#247 id=247 data-nosnippet>247</a>}
|
|
<a href=#248 id=248 data-nosnippet>248</a>
|
|
<a href=#249 id=249 data-nosnippet>249</a><span class="kw">fn </span>convert_primitive_type_to_column_data_type(
|
|
<a href=#250 id=250 data-nosnippet>250</a> ident: <span class="kw-2">&</span>Ident,
|
|
<a href=#251 id=251 data-nosnippet>251</a>) -> <span class="prelude-ty">Option</span><ColumnDataTypeWithExtension> {
|
|
<a href=#252 id=252 data-nosnippet>252</a> PRIMITIVE_TYPE_TO_COLUMN_DATA_TYPE
|
|
<a href=#253 id=253 data-nosnippet>253</a> .get(ident.to_string().as_str())
|
|
<a href=#254 id=254 data-nosnippet>254</a> .cloned()
|
|
<a href=#255 id=255 data-nosnippet>255</a> .map(ColumnDataTypeWithExtension::from)
|
|
<a href=#256 id=256 data-nosnippet>256</a>}
|
|
<a href=#257 id=257 data-nosnippet>257</a>
|
|
<a href=#258 id=258 data-nosnippet>258</a><span class="doccomment">/// Get the column data type from the attribute or the inferred column data type.
|
|
<a href=#259 id=259 data-nosnippet>259</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_column_data_type(
|
|
<a href=#260 id=260 data-nosnippet>260</a> infer_column_data_type: <span class="kw-2">&</span><span class="prelude-ty">Option</span><ColumnDataTypeWithExtension>,
|
|
<a href=#261 id=261 data-nosnippet>261</a> attribute: <span class="kw-2">&</span>ColumnAttribute,
|
|
<a href=#262 id=262 data-nosnippet>262</a>) -> <span class="prelude-ty">Option</span><ColumnDataTypeWithExtension> {
|
|
<a href=#263 id=263 data-nosnippet>263</a> attribute
|
|
<a href=#264 id=264 data-nosnippet>264</a> .datatype
|
|
<a href=#265 id=265 data-nosnippet>265</a> .clone()
|
|
<a href=#266 id=266 data-nosnippet>266</a> .or_else(|| infer_column_data_type.clone())
|
|
<a href=#267 id=267 data-nosnippet>267</a>}
|
|
<a href=#268 id=268 data-nosnippet>268</a>
|
|
<a href=#269 id=269 data-nosnippet>269</a><span class="doccomment">/// Convert a column data type to a value data ident.
|
|
<a href=#270 id=270 data-nosnippet>270</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>convert_column_data_type_to_value_data_ident(
|
|
<a href=#271 id=271 data-nosnippet>271</a> column_data_type: <span class="kw-2">&</span>ColumnDataType,
|
|
<a href=#272 id=272 data-nosnippet>272</a>) -> Ident {
|
|
<a href=#273 id=273 data-nosnippet>273</a> <span class="kw">match </span>column_data_type {
|
|
<a href=#274 id=274 data-nosnippet>274</a> ColumnDataType::Boolean => <span class="macro">format_ident!</span>(<span class="string">"BoolValue"</span>),
|
|
<a href=#275 id=275 data-nosnippet>275</a> ColumnDataType::Int8 => <span class="macro">format_ident!</span>(<span class="string">"I8Value"</span>),
|
|
<a href=#276 id=276 data-nosnippet>276</a> ColumnDataType::Int16 => <span class="macro">format_ident!</span>(<span class="string">"I16Value"</span>),
|
|
<a href=#277 id=277 data-nosnippet>277</a> ColumnDataType::Int32 => <span class="macro">format_ident!</span>(<span class="string">"I32Value"</span>),
|
|
<a href=#278 id=278 data-nosnippet>278</a> ColumnDataType::Int64 => <span class="macro">format_ident!</span>(<span class="string">"I64Value"</span>),
|
|
<a href=#279 id=279 data-nosnippet>279</a> ColumnDataType::Uint8 => <span class="macro">format_ident!</span>(<span class="string">"U8Value"</span>),
|
|
<a href=#280 id=280 data-nosnippet>280</a> ColumnDataType::Uint16 => <span class="macro">format_ident!</span>(<span class="string">"U16Value"</span>),
|
|
<a href=#281 id=281 data-nosnippet>281</a> ColumnDataType::Uint32 => <span class="macro">format_ident!</span>(<span class="string">"U32Value"</span>),
|
|
<a href=#282 id=282 data-nosnippet>282</a> ColumnDataType::Uint64 => <span class="macro">format_ident!</span>(<span class="string">"U64Value"</span>),
|
|
<a href=#283 id=283 data-nosnippet>283</a> ColumnDataType::Float32 => <span class="macro">format_ident!</span>(<span class="string">"F32Value"</span>),
|
|
<a href=#284 id=284 data-nosnippet>284</a> ColumnDataType::Float64 => <span class="macro">format_ident!</span>(<span class="string">"F64Value"</span>),
|
|
<a href=#285 id=285 data-nosnippet>285</a> ColumnDataType::Binary => <span class="macro">format_ident!</span>(<span class="string">"BinaryValue"</span>),
|
|
<a href=#286 id=286 data-nosnippet>286</a> ColumnDataType::String => <span class="macro">format_ident!</span>(<span class="string">"StringValue"</span>),
|
|
<a href=#287 id=287 data-nosnippet>287</a> ColumnDataType::Date => <span class="macro">format_ident!</span>(<span class="string">"DateValue"</span>),
|
|
<a href=#288 id=288 data-nosnippet>288</a> ColumnDataType::Datetime => <span class="macro">format_ident!</span>(<span class="string">"DatetimeValue"</span>),
|
|
<a href=#289 id=289 data-nosnippet>289</a> ColumnDataType::TimestampSecond => <span class="macro">format_ident!</span>(<span class="string">"TimestampSecondValue"</span>),
|
|
<a href=#290 id=290 data-nosnippet>290</a> ColumnDataType::TimestampMillisecond => {
|
|
<a href=#291 id=291 data-nosnippet>291</a> <span class="macro">format_ident!</span>(<span class="string">"TimestampMillisecondValue"</span>)
|
|
<a href=#292 id=292 data-nosnippet>292</a> }
|
|
<a href=#293 id=293 data-nosnippet>293</a> ColumnDataType::TimestampMicrosecond => {
|
|
<a href=#294 id=294 data-nosnippet>294</a> <span class="macro">format_ident!</span>(<span class="string">"TimestampMicrosecondValue"</span>)
|
|
<a href=#295 id=295 data-nosnippet>295</a> }
|
|
<a href=#296 id=296 data-nosnippet>296</a> ColumnDataType::TimestampNanosecond => <span class="macro">format_ident!</span>(<span class="string">"TimestampNanosecondValue"</span>),
|
|
<a href=#297 id=297 data-nosnippet>297</a> ColumnDataType::TimeSecond => <span class="macro">format_ident!</span>(<span class="string">"TimeSecondValue"</span>),
|
|
<a href=#298 id=298 data-nosnippet>298</a> ColumnDataType::TimeMillisecond => <span class="macro">format_ident!</span>(<span class="string">"TimeMillisecondValue"</span>),
|
|
<a href=#299 id=299 data-nosnippet>299</a> ColumnDataType::TimeMicrosecond => <span class="macro">format_ident!</span>(<span class="string">"TimeMicrosecondValue"</span>),
|
|
<a href=#300 id=300 data-nosnippet>300</a> ColumnDataType::TimeNanosecond => <span class="macro">format_ident!</span>(<span class="string">"TimeNanosecondValue"</span>),
|
|
<a href=#301 id=301 data-nosnippet>301</a> ColumnDataType::IntervalYearMonth => <span class="macro">format_ident!</span>(<span class="string">"IntervalYearMonthValue"</span>),
|
|
<a href=#302 id=302 data-nosnippet>302</a> ColumnDataType::IntervalDayTime => <span class="macro">format_ident!</span>(<span class="string">"IntervalDayTimeValue"</span>),
|
|
<a href=#303 id=303 data-nosnippet>303</a> ColumnDataType::IntervalMonthDayNano => {
|
|
<a href=#304 id=304 data-nosnippet>304</a> <span class="macro">format_ident!</span>(<span class="string">"IntervalMonthDayNanoValue"</span>)
|
|
<a href=#305 id=305 data-nosnippet>305</a> }
|
|
<a href=#306 id=306 data-nosnippet>306</a> ColumnDataType::Decimal128 => <span class="macro">format_ident!</span>(<span class="string">"Decimal128Value"</span>),
|
|
<a href=#307 id=307 data-nosnippet>307</a> <span class="comment">// Json is a special case, it is actually a string column.
|
|
<a href=#308 id=308 data-nosnippet>308</a> </span>ColumnDataType::Json => <span class="macro">format_ident!</span>(<span class="string">"StringValue"</span>),
|
|
<a href=#309 id=309 data-nosnippet>309</a> ColumnDataType::Vector => <span class="macro">format_ident!</span>(<span class="string">"VectorValue"</span>),
|
|
<a href=#310 id=310 data-nosnippet>310</a> ColumnDataType::List => <span class="macro">format_ident!</span>(<span class="string">"ListValue"</span>),
|
|
<a href=#311 id=311 data-nosnippet>311</a> ColumnDataType::Struct => <span class="macro">format_ident!</span>(<span class="string">"StructValue"</span>),
|
|
<a href=#312 id=312 data-nosnippet>312</a> ColumnDataType::Dictionary => {
|
|
<a href=#313 id=313 data-nosnippet>313</a> <span class="macro">panic!</span>(<span class="string">"Dictionary data type is not supported in row macros yet"</span>)
|
|
<a href=#314 id=314 data-nosnippet>314</a> }
|
|
<a href=#315 id=315 data-nosnippet>315</a> }
|
|
<a href=#316 id=316 data-nosnippet>316</a>}
|
|
</code></pre></div></section></main></body></html> |