| <!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/core/segment.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>segment.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"> |
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| </pre><pre class="rust"><code><span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::path::PathBuf; |
| |
| <span class="kw">use </span><span class="kw">super</span>::SegmentComponent; |
| <span class="kw">use </span><span class="kw">crate</span>::core::{Index, SegmentId, SegmentMeta}; |
| <span class="kw">use </span><span class="kw">crate</span>::directory::error::{OpenReadError, OpenWriteError}; |
| <span class="kw">use </span><span class="kw">crate</span>::directory::{Directory, FileSlice, WritePtr}; |
| <span class="kw">use </span><span class="kw">crate</span>::schema::Schema; |
| <span class="kw">use </span><span class="kw">crate</span>::Opstamp; |
| |
| <span class="doccomment">/// A segment is a piece of the index. |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>Segment { |
| index: Index, |
| meta: SegmentMeta, |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Segment { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="macro">write!</span>(f, <span class="string">"Segment({:?})"</span>, <span class="self">self</span>.id().uuid_string()) |
| } |
| } |
| |
| <span class="kw">impl </span>Segment { |
| <span class="doccomment">/// Creates a new segment given an `Index` and a `SegmentId` |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>for_index(index: Index, meta: SegmentMeta) -> Segment { |
| Segment { index, meta } |
| } |
| |
| <span class="doccomment">/// Returns the index the segment belongs to. |
| </span><span class="kw">pub fn </span>index(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>Index { |
| <span class="kw-2">&</span><span class="self">self</span>.index |
| } |
| |
| <span class="doccomment">/// Returns our index's schema. |
| </span><span class="kw">pub fn </span>schema(<span class="kw-2">&</span><span class="self">self</span>) -> Schema { |
| <span class="self">self</span>.index.schema() |
| } |
| |
| <span class="doccomment">/// Returns the segment meta-information |
| </span><span class="kw">pub fn </span>meta(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>SegmentMeta { |
| <span class="kw-2">&</span><span class="self">self</span>.meta |
| } |
| |
| <span class="doccomment">/// Updates the max_doc value from the `SegmentMeta`. |
| /// |
| /// This method is only used when updating `max_doc` from 0 |
| /// as we finalize a fresh new segment. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>with_max_doc(<span class="self">self</span>, max_doc: u32) -> Segment { |
| Segment { |
| index: <span class="self">self</span>.index, |
| meta: <span class="self">self</span>.meta.with_max_doc(max_doc), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| #[must_use] |
| </span><span class="kw">pub fn </span>with_delete_meta(<span class="self">self</span>, num_deleted_docs: u32, opstamp: Opstamp) -> Segment { |
| Segment { |
| index: <span class="self">self</span>.index, |
| meta: <span class="self">self</span>.meta.with_delete_meta(num_deleted_docs, opstamp), |
| } |
| } |
| |
| <span class="doccomment">/// Returns the segment's id. |
| </span><span class="kw">pub fn </span>id(<span class="kw-2">&</span><span class="self">self</span>) -> SegmentId { |
| <span class="self">self</span>.meta.id() |
| } |
| |
| <span class="doccomment">/// Returns the relative path of a component of our segment. |
| /// |
| /// It just joins the segment id with the extension |
| /// associated with a segment component. |
| </span><span class="kw">pub fn </span>relative_path(<span class="kw-2">&</span><span class="self">self</span>, component: SegmentComponent) -> PathBuf { |
| <span class="self">self</span>.meta.relative_path(component) |
| } |
| |
| <span class="doccomment">/// Open one of the component file for a *regular* read. |
| </span><span class="kw">pub fn </span>open_read(<span class="kw-2">&</span><span class="self">self</span>, component: SegmentComponent) -> <span class="prelude-ty">Result</span><FileSlice, OpenReadError> { |
| <span class="kw">let </span>path = <span class="self">self</span>.relative_path(component); |
| <span class="self">self</span>.index.directory().open_read(<span class="kw-2">&</span>path) |
| } |
| |
| <span class="doccomment">/// Open one of the component file for *regular* write. |
| </span><span class="kw">pub fn </span>open_write(<span class="kw-2">&mut </span><span class="self">self</span>, component: SegmentComponent) -> <span class="prelude-ty">Result</span><WritePtr, OpenWriteError> { |
| <span class="kw">let </span>path = <span class="self">self</span>.relative_path(component); |
| <span class="kw">let </span>write = <span class="self">self</span>.index.directory_mut().open_write(<span class="kw-2">&</span>path)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(write) |
| } |
| } |
| </code></pre></div> |
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