| <!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 `/root/.cargo/git/checkouts/tantivy-65d0bbbddbbd5d02/433372d/src/indexer/doc_opstamp_mapping.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>doc_opstamp_mapping.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../tantivy/index.html"><div class="logo-container"> |
| <img src="http://fulmicoton.com/tantivy-logo/tantivy-logo.png" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../tantivy/index.html"> |
| <img src="http://fulmicoton.com/tantivy-logo/tantivy-logo.png" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| </pre><pre class="rust"><code><span class="kw">use crate</span>::{DocId, Opstamp}; |
| |
| <span class="comment">// Doc to opstamp is used to identify which |
| // document should be deleted. |
| // |
| // Since the docset matching the query of a delete operation |
| // is not computed right when the delete operation is received, |
| // we need to find a way to evaluate, for each document, |
| // whether the document was added before or after |
| // the delete operation. This anteriority is used by comparing |
| // the docstamp of the document. |
| // |
| // The doc to opstamp mapping stores precisely an array |
| // indexed by doc id and storing the opstamp of the document. |
| // |
| // This mapping is NOT necessarily increasing, because |
| // we might be sorting documents according to a fast field. |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub enum </span>DocToOpstampMapping<<span class="lifetime">'a</span>> { |
| WithMap(<span class="kw-2">&</span><span class="lifetime">'a </span>[Opstamp]), |
| <span class="prelude-val">None</span>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DocToOpstampMapping<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Assess whether a document should be considered deleted given that it contains |
| /// a deleted term that was deleted at the opstamp: `delete_opstamp`. |
| /// |
| /// This function returns true if the `DocToOpstamp` mapping is none or if |
| /// the `doc_opstamp` is anterior to the delete opstamp. |
| </span><span class="kw">pub fn </span>is_deleted(<span class="kw-2">&</span><span class="self">self</span>, doc_id: DocId, delete_opstamp: Opstamp) -> bool { |
| <span class="kw">match </span><span class="self">self </span>{ |
| <span class="self">Self</span>::WithMap(doc_opstamps) => { |
| <span class="kw">let </span>doc_opstamp = doc_opstamps[doc_id <span class="kw">as </span>usize]; |
| doc_opstamp < delete_opstamp |
| } |
| <span class="self">Self</span>::None => <span class="bool-val">true</span>, |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| |
| <span class="kw">use </span><span class="kw">super</span>::DocToOpstampMapping; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_doc_to_opstamp_mapping_none() { |
| <span class="kw">let </span>doc_to_opstamp_mapping = DocToOpstampMapping::None; |
| <span class="macro">assert!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">1u32</span>, <span class="number">0u64</span>)); |
| <span class="macro">assert!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">1u32</span>, <span class="number">2u64</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_doc_to_opstamp_mapping_with_map() { |
| <span class="kw">let </span>doc_to_opstamp_mapping = DocToOpstampMapping::WithMap(<span class="kw-2">&</span>[<span class="number">5u64</span>, <span class="number">1u64</span>, <span class="number">0u64</span>, <span class="number">4u64</span>, <span class="number">3u64</span>]); |
| <span class="macro">assert_eq!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">0u32</span>, <span class="number">2u64</span>), <span class="bool-val">false</span>); |
| <span class="macro">assert_eq!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">1u32</span>, <span class="number">2u64</span>), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">2u32</span>, <span class="number">2u64</span>), <span class="bool-val">true</span>); |
| <span class="macro">assert_eq!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">3u32</span>, <span class="number">2u64</span>), <span class="bool-val">false</span>); |
| <span class="macro">assert_eq!</span>(doc_to_opstamp_mapping.is_deleted(<span class="number">4u32</span>, <span class="number">2u64</span>), <span class="bool-val">false</span>); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="tantivy" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
