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</pre><pre class="rust"><code><span class="kw">use </span>std::slice;
<span class="doccomment">/// Enum describing each component of a tantivy segment.
/// Each component is stored in its own file,
/// using the pattern `segment_uuid`.`component_extension`,
/// except the delete component that takes an `segment_uuid`.`delete_opstamp`.`component_extension`
</span><span class="attribute">#[derive(Copy, Clone, Eq, PartialEq)]
</span><span class="kw">pub enum </span>SegmentComponent {
<span class="doccomment">/// Postings (or inverted list). Sorted lists of document ids, associated with terms
</span>Postings,
<span class="doccomment">/// Positions of terms in each document.
</span>Positions,
<span class="doccomment">/// Column-oriented random-access storage of fields.
</span>FastFields,
<span class="doccomment">/// Stores the sum of the length (in terms) of each field for each document.
/// Field norms are stored as a special u64 fast field.
</span>FieldNorms,
<span class="doccomment">/// Dictionary associating `Term`s to `TermInfo`s which is
/// simply an address into the `postings` file and the `positions` file.
</span>Terms,
<span class="doccomment">/// Row-oriented, compressed storage of the documents.
/// Accessing a document from the store is relatively slow, as it
/// requires to decompress the entire block it belongs to.
</span>Store,
<span class="doccomment">/// Temporary storage of the documents, before streamed to `Store`.
</span>TempStore,
<span class="doccomment">/// Bitset describing which document of the segment is alive.
/// (It was representing deleted docs but changed to represent alive docs from v0.17)
</span>Delete,
}
<span class="kw">impl </span>SegmentComponent {
<span class="doccomment">/// Iterates through the components.
</span><span class="kw">pub fn </span>iterator() -&gt; slice::Iter&lt;<span class="lifetime">&#39;static</span>, SegmentComponent&gt; {
<span class="kw">static </span>SEGMENT_COMPONENTS: [SegmentComponent; <span class="number">8</span>] = [
SegmentComponent::Postings,
SegmentComponent::Positions,
SegmentComponent::FastFields,
SegmentComponent::FieldNorms,
SegmentComponent::Terms,
SegmentComponent::Store,
SegmentComponent::TempStore,
SegmentComponent::Delete,
];
SEGMENT_COMPONENTS.iter()
}
}
</code></pre></div>
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