mentat/docs/apis/rust/mentat_query_algebrizer/struct.AlgebraicQuery.html
2018-06-22 18:25:54 +01:00

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<title>mentat_query_algebrizer::AlgebraicQuery - Rust</title>
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<p class='location'>Struct AlgebraicQuery</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.find_spec">find_spec</a><a href="#structfield.with">with</a><a href="#structfield.named_projection">named_projection</a><a href="#structfield.order">order</a><a href="#structfield.limit">limit</a><a href="#structfield.cc">cc</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.is_known_empty">is_known_empty</a><a href="#method.is_fully_bound">is_fully_bound</a><a href="#method.is_fully_unit_bound">is_fully_unit_bound</a><a href="#method.unbound_variables">unbound_variables</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a></div></div><p class='location'><a href='index.html'>mentat_query_algebrizer</a></p><script>window.sidebarCurrent = {name: 'AlgebraicQuery', ty: 'struct', 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'>Struct <a href='index.html'>mentat_query_algebrizer</a>::<wbr><a class="struct" href=''>AlgebraicQuery</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>&#x2212;</span>]
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</span><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#130-150' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct AlgebraicQuery {
pub find_spec: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a>&lt;FindSpec&gt;,
pub with: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a>&lt;Variable&gt;,
pub named_projection: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a>&lt;Variable&gt;,
pub order: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../mentat_query_algebrizer/struct.OrderBy.html" title="struct mentat_query_algebrizer::OrderBy">OrderBy</a>&gt;&gt;,
pub limit: Limit,
pub cc: <a class="struct" href="../mentat_query_algebrizer/struct.ConjoiningClauses.html" title="struct mentat_query_algebrizer::ConjoiningClauses">ConjoiningClauses</a>,
// some fields omitted
}</pre></div><h2 id='fields' class='fields small-section-header'>
Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.find_spec" class="structfield small-section-header">
<a href="#structfield.find_spec" class="anchor field"></a>
<span id="find_spec.v" class='invisible'>
<code>find_spec: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a>&lt;FindSpec&gt;</code>
</span></span><span id="structfield.with" class="structfield small-section-header">
<a href="#structfield.with" class="anchor field"></a>
<span id="with.v" class='invisible'>
<code>with: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a>&lt;Variable&gt;</code>
</span></span><div class='docblock'><p>The set of variables that the caller wishes to be used for grouping when aggregating.
These are specified in the query input, as <code>:with</code>, and are then chewed up during projection.
If no variables are supplied, then no additional grouping is necessary beyond the
non-aggregated projection list.</p>
</div><span id="structfield.named_projection" class="structfield small-section-header">
<a href="#structfield.named_projection" class="anchor field"></a>
<span id="named_projection.v" class='invisible'>
<code>named_projection: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a>&lt;Variable&gt;</code>
</span></span><div class='docblock'><p>Some query features, such as ordering, are implemented by implicit reference to SQL columns.
In order for these references to be 'live', those columns must be projected.
This is the set of variables that must be so projected.
This is not necessarily every variable that will be so required -- some variables
will already be in the projection list.</p>
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<a href="#structfield.order" class="anchor field"></a>
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<code>order: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../mentat_query_algebrizer/struct.OrderBy.html" title="struct mentat_query_algebrizer::OrderBy">OrderBy</a>&gt;&gt;</code>
</span></span><span id="structfield.limit" class="structfield small-section-header">
<a href="#structfield.limit" class="anchor field"></a>
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<code>limit: Limit</code>
</span></span><span id="structfield.cc" class="structfield small-section-header">
<a href="#structfield.cc" class="anchor field"></a>
<span id="cc.v" class='invisible'>
<code>cc: <a class="struct" href="../mentat_query_algebrizer/struct.ConjoiningClauses.html" title="struct mentat_query_algebrizer::ConjoiningClauses">ConjoiningClauses</a></code>
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<h2 id='methods' class='small-section-header'>
Methods<a href='#methods' class='anchor'></a>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../mentat_query_algebrizer/struct.AlgebraicQuery.html" title="struct mentat_query_algebrizer::AlgebraicQuery">AlgebraicQuery</a></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#152-189' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.is_known_empty' class="method"><span id='is_known_empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_known_empty' class='fnname'>is_known_empty</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#154-156' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.is_fully_bound' class="method"><span id='is_fully_bound.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_fully_bound' class='fnname'>is_fully_bound</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#159-174' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return true if every variable in the find spec is fully bound to a single value.</p>
</div><h4 id='method.is_fully_unit_bound' class="method"><span id='is_fully_unit_bound.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_fully_unit_bound' class='fnname'>is_fully_unit_bound</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#178-181' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return true if every variable in the find spec is fully bound to a single value,
and evaluating the query doesn't require running SQL.</p>
</div><h4 id='method.unbound_variables' class="method"><span id='unbound_variables.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.unbound_variables' class='fnname'>unbound_variables</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a>&lt;Variable&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#186-188' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return a set of the input variables mentioned in the <code>:in</code> clause that have not yet been
bound. We do this by looking at the CC.</p>
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<h3 id='impl-Debug' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../mentat_query_algebrizer/struct.AlgebraicQuery.html" title="struct mentat_query_algebrizer::AlgebraicQuery">AlgebraicQuery</a></code><a href='#impl-Debug' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#129' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, __arg_0: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#129' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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<h3 id='impl-Send' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../mentat_query_algebrizer/struct.AlgebraicQuery.html" title="struct mentat_query_algebrizer::AlgebraicQuery">AlgebraicQuery</a></code><a href='#impl-Send' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../mentat_query_algebrizer/struct.AlgebraicQuery.html" title="struct mentat_query_algebrizer::AlgebraicQuery">AlgebraicQuery</a></code><a href='#impl-Sync' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div></div></section>
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