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| </pre><pre class="rust"><code><span class="kw">use </span>std::ops::{Range, RangeInclusive}; |
| <span class="kw">use </span>std::sync::Arc; |
| |
| <span class="kw">use </span>fastfield_codecs::{Column, MonotonicallyMappableToU128}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::MultiValueIndex; |
| <span class="kw">use </span><span class="kw">crate</span>::fastfield::FastValue; |
| <span class="kw">use </span><span class="kw">crate</span>::DocId; |
| |
| <span class="doccomment">/// Reader for a multivalued `u64` fast field. |
| /// |
| /// The reader is implemented as two `u64` fast field. |
| /// |
| /// The `vals_reader` will access the concatenated list of all |
| /// values for all reader. |
| /// The `idx_reader` associated, for each document, the index of its first value. |
| /// Stores the start position for each document. |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>MultiValuedFastFieldReader<Item: FastValue> { |
| idx_reader: MultiValueIndex, |
| vals_reader: Arc<<span class="kw">dyn </span>Column<Item>>, |
| } |
| |
| <span class="kw">impl</span><Item: FastValue> MultiValuedFastFieldReader<Item> { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>open( |
| idx_reader: Arc<<span class="kw">dyn </span>Column<u64>>, |
| vals_reader: Arc<<span class="kw">dyn </span>Column<Item>>, |
| ) -> MultiValuedFastFieldReader<Item> { |
| MultiValuedFastFieldReader { |
| idx_reader: MultiValueIndex::new(idx_reader), |
| vals_reader, |
| } |
| } |
| |
| <span class="doccomment">/// Returns the array of values associated with the given `doc`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_vals_for_range(<span class="kw-2">&</span><span class="self">self</span>, range: Range<u32>, vals: <span class="kw-2">&mut </span>Vec<Item>) { |
| <span class="kw">let </span>len = (range.end - range.start) <span class="kw">as </span>usize; |
| vals.resize(len, Item::make_zero()); |
| <span class="self">self</span>.vals_reader |
| .get_range(range.start <span class="kw">as </span>u64, <span class="kw-2">&mut </span>vals[..]); |
| } |
| |
| <span class="doccomment">/// Returns the array of values associated with the given `doc`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_vals(<span class="kw-2">&</span><span class="self">self</span>, doc: DocId, vals: <span class="kw-2">&mut </span>Vec<Item>) { |
| <span class="kw">let </span>range = <span class="self">self</span>.idx_reader.range(doc); |
| <span class="self">self</span>.get_vals_for_range(range, vals); |
| } |
| |
| <span class="doccomment">/// returns the multivalue index |
| </span><span class="kw">pub fn </span>get_index_reader(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>MultiValueIndex { |
| <span class="kw-2">&</span><span class="self">self</span>.idx_reader |
| } |
| |
| <span class="doccomment">/// Returns the minimum value for this fast field. |
| /// |
| /// The min value does not take in account of possible |
| /// deleted document, and should be considered as a lower bound |
| /// of the actual minimum value. |
| </span><span class="kw">pub fn </span>min_value(<span class="kw-2">&</span><span class="self">self</span>) -> Item { |
| <span class="self">self</span>.vals_reader.min_value() |
| } |
| |
| <span class="doccomment">/// Returns the maximum value for this fast field. |
| /// |
| /// The max value does not take in account of possible |
| /// deleted document, and should be considered as an upper bound |
| /// of the actual maximum value. |
| </span><span class="kw">pub fn </span>max_value(<span class="kw-2">&</span><span class="self">self</span>) -> Item { |
| <span class="self">self</span>.vals_reader.max_value() |
| } |
| |
| <span class="doccomment">/// Returns the number of values associated with the document `DocId`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>num_vals(<span class="kw-2">&</span><span class="self">self</span>, doc: DocId) -> u32 { |
| <span class="self">self</span>.idx_reader.num_vals_for_doc(doc) |
| } |
| |
| <span class="doccomment">/// Returns the overall number of values in this field. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>total_num_vals(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.idx_reader.total_num_vals() |
| } |
| } |
| |
| <span class="doccomment">/// Reader for a multivalued `u128` fast field. |
| /// |
| /// The reader is implemented as a `u64` fast field for the index and a `u128` fast field. |
| /// |
| /// The `vals_reader` will access the concatenated list of all |
| /// values for all reader. |
| /// The `idx_reader` associated, for each document, the index of its first value. |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>MultiValuedU128FastFieldReader<T: MonotonicallyMappableToU128> { |
| idx_reader: MultiValueIndex, |
| vals_reader: Arc<<span class="kw">dyn </span>Column<T>>, |
| } |
| |
| <span class="kw">impl</span><T: MonotonicallyMappableToU128> MultiValuedU128FastFieldReader<T> { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>open( |
| idx_reader: Arc<<span class="kw">dyn </span>Column<u64>>, |
| vals_reader: Arc<<span class="kw">dyn </span>Column<T>>, |
| ) -> MultiValuedU128FastFieldReader<T> { |
| <span class="self">Self </span>{ |
| idx_reader: MultiValueIndex::new(idx_reader), |
| vals_reader, |
| } |
| } |
| |
| <span class="doccomment">/// Returns the array of values associated to the given `doc`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_first_val(<span class="kw-2">&</span><span class="self">self</span>, doc: DocId) -> <span class="prelude-ty">Option</span><T> { |
| <span class="kw">let </span>range = <span class="self">self</span>.idx_reader.range(doc); |
| <span class="kw">if </span>range.is_empty() { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.vals_reader.get_val(range.start)) |
| } |
| |
| <span class="doccomment">/// Returns the array of values associated to the given `doc`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_vals_for_range(<span class="kw-2">&</span><span class="self">self</span>, range: Range<u32>, vals: <span class="kw-2">&mut </span>Vec<T>) { |
| <span class="kw">let </span>len = (range.end - range.start) <span class="kw">as </span>usize; |
| vals.resize(len, T::from_u128(<span class="number">0</span>)); |
| <span class="self">self</span>.vals_reader |
| .get_range(range.start <span class="kw">as </span>u64, <span class="kw-2">&mut </span>vals[..]); |
| } |
| |
| <span class="doccomment">/// Returns the index reader |
| </span><span class="kw">pub fn </span>get_index_reader(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>MultiValueIndex { |
| <span class="kw-2">&</span><span class="self">self</span>.idx_reader |
| } |
| |
| <span class="doccomment">/// Returns the array of values associated to the given `doc`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_vals(<span class="kw-2">&</span><span class="self">self</span>, doc: DocId, vals: <span class="kw-2">&mut </span>Vec<T>) { |
| <span class="kw">let </span>range = <span class="self">self</span>.idx_reader.range(doc); |
| <span class="self">self</span>.get_vals_for_range(range, vals); |
| } |
| |
| <span class="doccomment">/// Iterates over all elements in the fast field |
| </span><span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = T> + <span class="lifetime">'_ </span>{ |
| <span class="self">self</span>.vals_reader.iter() |
| } |
| |
| <span class="doccomment">/// Returns the minimum value for this fast field. |
| /// |
| /// The min value does not take in account of possible |
| /// deleted document, and should be considered as a lower bound |
| /// of the actual mimimum value. |
| </span><span class="kw">pub fn </span>min_value(<span class="kw-2">&</span><span class="self">self</span>) -> T { |
| <span class="self">self</span>.vals_reader.min_value() |
| } |
| |
| <span class="doccomment">/// Returns the maximum value for this fast field. |
| /// |
| /// The max value does not take in account of possible |
| /// deleted document, and should be considered as an upper bound |
| /// of the actual maximum value. |
| </span><span class="kw">pub fn </span>max_value(<span class="kw-2">&</span><span class="self">self</span>) -> T { |
| <span class="self">self</span>.vals_reader.max_value() |
| } |
| |
| <span class="doccomment">/// Returns the number of values associated with the document `DocId`. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>num_vals(<span class="kw-2">&</span><span class="self">self</span>, doc: DocId) -> u32 { |
| <span class="self">self</span>.idx_reader.num_vals_for_doc(doc) |
| } |
| |
| <span class="doccomment">/// Returns the overall number of values in this field. It does not include deletes. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>total_num_vals(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="macro">assert_eq!</span>( |
| <span class="self">self</span>.vals_reader.num_vals(), |
| <span class="self">self</span>.get_index_reader().total_num_vals() |
| ); |
| <span class="self">self</span>.idx_reader.total_num_vals() |
| } |
| |
| <span class="doccomment">/// Returns the docids matching given doc_id_range and value_range. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_docids_for_value_range( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| value_range: RangeInclusive<T>, |
| doc_id_range: Range<u32>, |
| positions: <span class="kw-2">&mut </span>Vec<u32>, |
| ) { |
| <span class="kw">let </span>position_range = <span class="self">self |
| </span>.get_index_reader() |
| .docid_range_to_position_range(doc_id_range.clone()); |
| <span class="self">self</span>.vals_reader |
| .get_docids_for_value_range(value_range, position_range, positions); |
| |
| <span class="self">self</span>.idx_reader.positions_to_docids(doc_id_range, positions); |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| |
| <span class="kw">use </span><span class="kw">crate</span>::core::Index; |
| <span class="kw">use </span><span class="kw">crate</span>::schema::{Cardinality, Facet, FacetOptions, NumericOptions, Schema}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_multifastfield_reader() -> <span class="kw">crate</span>::Result<()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>schema_builder = Schema::builder(); |
| <span class="kw">let </span>facet_field = schema_builder.add_facet_field(<span class="string">"facets"</span>, FacetOptions::default()); |
| <span class="kw">let </span>schema = schema_builder.build(); |
| <span class="kw">let </span>index = Index::create_in_ram(schema); |
| <span class="kw">let </span><span class="kw-2">mut </span>index_writer = index.writer_for_tests()<span class="question-mark">?</span>; |
| index_writer.add_document(<span class="macro">doc!</span>( |
| facet_field => Facet::from(<span class="string">"/category/cat2"</span>), |
| facet_field => Facet::from(<span class="string">"/category/cat1"</span>), |
| ))<span class="question-mark">?</span>; |
| index_writer.add_document(<span class="macro">doc!</span>(facet_field => Facet::from(<span class="string">"/category/cat2"</span>)))<span class="question-mark">?</span>; |
| index_writer.add_document(<span class="macro">doc!</span>(facet_field => Facet::from(<span class="string">"/category/cat3"</span>)))<span class="question-mark">?</span>; |
| index_writer.commit()<span class="question-mark">?</span>; |
| <span class="kw">let </span>searcher = index.reader()<span class="question-mark">?</span>.searcher(); |
| <span class="kw">let </span>segment_reader = searcher.segment_reader(<span class="number">0</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>facet_reader = segment_reader.facet_reader(facet_field)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>facet = Facet::root(); |
| { |
| facet_reader.facet_from_ord(<span class="number">1</span>, <span class="kw-2">&mut </span>facet).unwrap(); |
| <span class="macro">assert_eq!</span>(facet, Facet::from(<span class="string">"/category"</span>)); |
| } |
| { |
| facet_reader.facet_from_ord(<span class="number">2</span>, <span class="kw-2">&mut </span>facet).unwrap(); |
| <span class="macro">assert_eq!</span>(facet, Facet::from(<span class="string">"/category/cat1"</span>)); |
| } |
| { |
| facet_reader.facet_from_ord(<span class="number">3</span>, <span class="kw-2">&mut </span>facet).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, facet), <span class="string">"/category/cat2"</span>); |
| <span class="macro">assert_eq!</span>(facet, Facet::from(<span class="string">"/category/cat2"</span>)); |
| } |
| { |
| facet_reader.facet_from_ord(<span class="number">4</span>, <span class="kw-2">&mut </span>facet).unwrap(); |
| <span class="macro">assert_eq!</span>(facet, Facet::from(<span class="string">"/category/cat3"</span>)); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>vals = Vec::new(); |
| { |
| facet_reader.facet_ords(<span class="number">0</span>, <span class="kw-2">&mut </span>vals); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>vals[..], <span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>]); |
| } |
| { |
| facet_reader.facet_ords(<span class="number">1</span>, <span class="kw-2">&mut </span>vals); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>vals[..], <span class="kw-2">&</span>[<span class="number">3</span>]); |
| } |
| { |
| facet_reader.facet_ords(<span class="number">2</span>, <span class="kw-2">&mut </span>vals); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>vals[..], <span class="kw-2">&</span>[<span class="number">4</span>]); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_multifastfield_reader_min_max() -> <span class="kw">crate</span>::Result<()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>schema_builder = Schema::builder(); |
| <span class="kw">let </span>field_options = NumericOptions::default() |
| .set_indexed() |
| .set_fast(Cardinality::MultiValues); |
| <span class="kw">let </span>item_field = schema_builder.add_i64_field(<span class="string">"items"</span>, field_options); |
| <span class="kw">let </span>schema = schema_builder.build(); |
| <span class="kw">let </span>index = Index::create_in_ram(schema); |
| <span class="kw">let </span><span class="kw-2">mut </span>index_writer = index |
| .writer_for_tests() |
| .expect(<span class="string">"Failed to create index writer."</span>); |
| index_writer.add_document(<span class="macro">doc!</span>( |
| item_field => <span class="number">2i64</span>, |
| item_field => <span class="number">3i64</span>, |
| item_field => -<span class="number">2i64</span>, |
| ))<span class="question-mark">?</span>; |
| index_writer.add_document(<span class="macro">doc!</span>(item_field => <span class="number">6i64</span>, item_field => <span class="number">3i64</span>))<span class="question-mark">?</span>; |
| index_writer.add_document(<span class="macro">doc!</span>(item_field => <span class="number">4i64</span>))<span class="question-mark">?</span>; |
| index_writer.commit()<span class="question-mark">?</span>; |
| <span class="kw">let </span>searcher = index.reader()<span class="question-mark">?</span>.searcher(); |
| <span class="kw">let </span>segment_reader = searcher.segment_reader(<span class="number">0</span>); |
| <span class="kw">let </span>field_reader = segment_reader.fast_fields().i64s(item_field)<span class="question-mark">?</span>; |
| |
| <span class="macro">assert_eq!</span>(field_reader.min_value(), -<span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(field_reader.max_value(), <span class="number">6</span>); |
| <span class="prelude-val">Ok</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> |