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<p class='location'>Trait MentatStoring</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.resolve_avs">resolve_avs</a><a href="#tymethod.begin_tx_application">begin_tx_application</a><a href="#tymethod.insert_non_fts_searches">insert_non_fts_searches</a><a href="#tymethod.insert_fts_searches">insert_fts_searches</a><a href="#tymethod.commit_transaction">commit_transaction</a><a href="#tymethod.committed_metadata_assertions">committed_metadata_assertions</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-MentatStoring">Connection</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>mentat_db</a>::<wbr><a href='index.html'>db</a></p><script>window.sidebarCurrent = {name: 'MentatStoring', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>mentat_db</a>::<wbr><a href='index.html'>db</a>::<wbr><a class="trait" href=''>MentatStoring</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/mentat_db/db.rs.html#493-522' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust trait'>pub trait MentatStoring {
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fn <a href='#tymethod.resolve_avs' class='fnname'>resolve_avs</a><'a>(&self, avs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a>&'a <a class="type" href="../../mentat_db/types/type.AVPair.html" title="type mentat_db::types::AVPair">AVPair</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="type" href="../../mentat_db/types/type.AVMap.html" title="type mentat_db::types::AVMap">AVMap</a><'a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.begin_tx_application' class='fnname'>begin_tx_application</a>(&self) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.insert_non_fts_searches' class='fnname'>insert_non_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br> ) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.insert_fts_searches' class='fnname'>insert_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br> ) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.commit_transaction' class='fnname'>commit_transaction</a>(&self, tx_id: <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.committed_metadata_assertions' class='fnname'>committed_metadata_assertions</a>(<br> &self, <br> tx_id: <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a><br> ) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>, <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>, <a class="enum" href="../../mentat_db/types/enum.TypedValue.html" title="enum mentat_db::types::TypedValue">TypedValue</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>>;
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}</pre></div><div class='docblock'><p><code>MentatStoring</code> will be the trait that encapsulates the storage layer. It is consumed by the
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transaction processing layer.</p>
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<p>Right now, the only implementation of <code>MentatStoring</code> is the SQLite-specific SQL schema. In the
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future, we might consider other SQL engines (perhaps with different fulltext indexing), or
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entirely different data stores, say ones shaped like key-value stores.</p>
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</div>
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<h2 id='required-methods' class='small-section-header'>
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Required Methods<a href='#required-methods' class='anchor'></a>
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</h2>
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<div class='methods'>
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<h3 id='tymethod.resolve_avs' class='method'><span id='resolve_avs.v' class='invisible'><code>fn <a href='#tymethod.resolve_avs' class='fnname'>resolve_avs</a><'a>(&self, avs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a>&'a <a class="type" href="../../mentat_db/types/type.AVPair.html" title="type mentat_db::types::AVPair">AVPair</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="type" href="../../mentat_db/types/type.AVMap.html" title="type mentat_db::types::AVMap">AVMap</a><'a>></code></span></h3><div class='docblock'><p>Given a slice of [a v] lookup-refs, look up the corresponding [e a v] triples.</p>
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<p>It is assumed that the attribute <code>a</code> in each lookup-ref is <code>:db/unique</code>, so that at most one
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matching [e a v] triple exists. (If this is not true, some matching entid <code>e</code> will be
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chosen non-deterministically, if one exists.)</p>
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<p>Returns a map &(a, v) -> e, to avoid cloning potentially large values. The keys of the map
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are exactly those (a, v) pairs that have an assertion [e a v] in the store.</p>
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</div><h3 id='tymethod.begin_tx_application' class='method'><span id='begin_tx_application.v' class='invisible'><code>fn <a href='#tymethod.begin_tx_application' class='fnname'>begin_tx_application</a>(&self) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><div class='docblock'><p>Begin (or prepare) the underlying storage layer for a new Mentat transaction.</p>
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<p>Use this to create temporary tables, prepare indices, set pragmas, etc, before the initial
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<code>insert_non_fts_searches</code> invocation.</p>
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</div><h3 id='tymethod.insert_non_fts_searches' class='method'><span id='insert_non_fts_searches.v' class='invisible'><code>fn <a href='#tymethod.insert_non_fts_searches' class='fnname'>insert_non_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><h3 id='tymethod.insert_fts_searches' class='method'><span id='insert_fts_searches.v' class='invisible'><code>fn <a href='#tymethod.insert_fts_searches' class='fnname'>insert_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><h3 id='tymethod.commit_transaction' class='method'><span id='commit_transaction.v' class='invisible'><code>fn <a href='#tymethod.commit_transaction' class='fnname'>commit_transaction</a>(&self, tx_id: <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><div class='docblock'><p>Finalize the underlying storage layer after a Mentat transaction.</p>
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<p>Use this to finalize temporary tables, complete indices, revert pragmas, etc, after the
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final <code>insert_non_fts_searches</code> invocation.</p>
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</div><h3 id='tymethod.committed_metadata_assertions' class='method'><span id='committed_metadata_assertions.v' class='invisible'><code>fn <a href='#tymethod.committed_metadata_assertions' class='fnname'>committed_metadata_assertions</a>(<br> &self, <br> tx_id: <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a><br>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>, <a class="type" href="../../mentat_db/types/type.Entid.html" title="type mentat_db::types::Entid">Entid</a>, <a class="enum" href="../../mentat_db/types/enum.TypedValue.html" title="enum mentat_db::types::TypedValue">TypedValue</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>></code></span></h3><div class='docblock'><p>Extract metadata-related [e a typed_value added] datoms committed in the given transaction.</p>
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</div></div>
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<h2 id='foreign-impls' class='small-section-header'>
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Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a>
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</h2>
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<h3 id='impl-MentatStoring' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="../../mentat_db/db/trait.MentatStoring.html" title="trait mentat_db::db::MentatStoring">MentatStoring</a> for <a class="struct" href="../../rusqlite/struct.Connection.html" title="struct rusqlite::Connection">Connection</a></code><a href='#impl-MentatStoring' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mentat_db/db.rs.html#642-979' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><span class='docblock autohide'><div class='impl-items'><h4 id='method.resolve_avs' class="method"><span id='resolve_avs.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.resolve_avs' class='fnname'>resolve_avs</a><'a>(&self, avs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a>&'a <a class="type" href="../../mentat_db/types/type.AVPair.html" title="type mentat_db::types::AVPair">AVPair</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="type" href="../../mentat_db/types/type.AVMap.html" title="type mentat_db::types::AVMap">AVMap</a><'a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mentat_db/db.rs.html#643-707' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.begin_tx_application' class="method"><span id='begin_tx_application.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.begin_tx_application' class='fnname'>begin_tx_application</a>(&self) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mentat_db/db.rs.html#710-771' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Create empty temporary tables for search parameters and search results.</p>
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</div><h4 id='method.insert_non_fts_searches' class="method"><span id='insert_non_fts_searches.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.insert_non_fts_searches' class='fnname'>insert_non_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><'a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mentat_db/db.rs.html#777-835' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Insert search rows into temporary search tables.</p>
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<p>Eventually, the details of this approach will be captured in
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https://github.com/mozilla/mentat/wiki/Transacting:-entity-to-SQL-translation.</p>
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</div><h4 id='method.insert_fts_searches' class="method"><span id='insert_fts_searches.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.insert_fts_searches' class='fnname'>insert_fts_searches</a><'a>(<br> &self, <br> entities: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="type" href="../../mentat_db/db/type.ReducedEntity.html" title="type mentat_db::db::ReducedEntity">ReducedEntity</a><'a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br> search_type: <a class="enum" href="../../mentat_db/db/enum.SearchType.html" title="enum mentat_db::db::SearchType">SearchType</a><br>) -> <a class="type" href="../../mentat_db/errors/type.Result.html" title="type mentat_db::errors::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mentat_db/db.rs.html#841-958' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Insert search rows into temporary search tables.</p>
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<p>Eventually, the details of this approach will be captured in
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https://github.com/mozilla/mentat/wiki/Transacting:-entity-to-SQL-translation.</p>
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