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| </pre><pre class="rust"><code><span class="kw">use </span>std::borrow::Cow; |
| <span class="kw">use </span>std::ops::BitOr; |
| |
| <span class="kw">use </span>serde::{Deserialize, Serialize}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::flags::FastFlag; |
| <span class="kw">use </span><span class="kw">crate</span>::schema::flags::{SchemaFlagList, StoredFlag}; |
| <span class="kw">use </span><span class="kw">crate</span>::schema::IndexRecordOption; |
| |
| <span class="doccomment">/// Define how a text field should be handled by tantivy. |
| </span><span class="attribute">#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Default)] |
| </span><span class="kw">pub struct </span>TextOptions { |
| <span class="attribute">#[serde(default)] |
| #[serde(skip_serializing_if = <span class="string">"Option::is_none"</span>)] |
| </span>indexing: <span class="prelude-ty">Option</span><TextFieldIndexing>, |
| <span class="attribute">#[serde(default)] |
| </span>stored: bool, |
| <span class="attribute">#[serde(default)] |
| </span>fast: bool, |
| } |
| |
| <span class="kw">impl </span>TextOptions { |
| <span class="doccomment">/// Returns the indexing options. |
| </span><span class="kw">pub fn </span>get_indexing_options(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>TextFieldIndexing> { |
| <span class="self">self</span>.indexing.as_ref() |
| } |
| |
| <span class="doccomment">/// Returns true if the text is to be stored. |
| </span><span class="kw">pub fn </span>is_stored(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.stored |
| } |
| |
| <span class="doccomment">/// Returns true iff the value is a fast field. |
| </span><span class="kw">pub fn </span>is_fast(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.fast |
| } |
| |
| <span class="doccomment">/// Set the field as a fast field. |
| /// |
| /// Fast fields are designed for random access. |
| /// Access time are similar to a random lookup in an array. |
| /// Text fast fields will have the term ids stored in the fast field. |
| /// The fast field will be a multivalued fast field. |
| /// |
| /// The effective cardinality depends on the tokenizer. When creating fast fields on text |
| /// fields it is recommended to use the "raw" tokenizer, since it will store the original text |
| /// unchanged. The "default" tokenizer will store the terms as lower case and this will be |
| /// reflected in the dictionary. |
| /// |
| /// The original text can be retrieved via |
| /// [`TermDictionary::ord_to_term()`](crate::termdict::TermDictionary::ord_to_term) |
| /// from the dictionary. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_fast(<span class="kw-2">mut </span><span class="self">self</span>) -> TextOptions { |
| <span class="self">self</span>.fast = <span class="bool-val">true</span>; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the field as stored |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_stored(<span class="kw-2">mut </span><span class="self">self</span>) -> TextOptions { |
| <span class="self">self</span>.stored = <span class="bool-val">true</span>; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Sets the field as indexed, with the specific indexing options. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_indexing_options(<span class="kw-2">mut </span><span class="self">self</span>, indexing: TextFieldIndexing) -> TextOptions { |
| <span class="self">self</span>.indexing = <span class="prelude-val">Some</span>(indexing); |
| <span class="self">self |
| </span>} |
| } |
| |
| <span class="attribute">#[derive(Clone, PartialEq, Debug, Eq, Serialize, Deserialize)] |
| </span><span class="kw">struct </span>TokenizerName(Cow<<span class="lifetime">'static</span>, str>); |
| |
| <span class="kw">const </span>DEFAULT_TOKENIZER_NAME: <span class="kw-2">&</span>str = <span class="string">"default"</span>; |
| |
| <span class="kw">const </span>NO_TOKENIZER_NAME: <span class="kw-2">&</span>str = <span class="string">"raw"</span>; |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>TokenizerName { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| TokenizerName::from_static(DEFAULT_TOKENIZER_NAME) |
| } |
| } |
| |
| <span class="kw">impl </span>TokenizerName { |
| <span class="kw">const fn </span>from_static(name: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="self">Self </span>{ |
| TokenizerName(Cow::Borrowed(name)) |
| } |
| <span class="kw">fn </span>from_name(name: <span class="kw-2">&</span>str) -> <span class="self">Self </span>{ |
| TokenizerName(Cow::Owned(name.to_string())) |
| } |
| <span class="kw">fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| |
| <span class="doccomment">/// Configuration defining indexing for a text field. |
| /// |
| /// It defines |
| /// - The amount of information that should be stored about the presence of a term in a document. |
| /// Essentially, should we store the term frequency and/or the positions (See |
| /// [`IndexRecordOption`]). |
| /// - The name of the `Tokenizer` that should be used to process the field. |
| /// - Flag indicating, if fieldnorms should be stored (See [fieldnorm](crate::fieldnorm)). Defaults |
| /// to `true`. |
| </span><span class="attribute">#[derive(Clone, PartialEq, Debug, Eq, Serialize, Deserialize)] |
| </span><span class="kw">pub struct </span>TextFieldIndexing { |
| <span class="attribute">#[serde(default)] |
| </span>record: IndexRecordOption, |
| <span class="attribute">#[serde(default = <span class="string">"default_fieldnorms"</span>)] |
| </span>fieldnorms: bool, |
| <span class="attribute">#[serde(default)] |
| </span>tokenizer: TokenizerName, |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>default_fieldnorms() -> bool { |
| <span class="bool-val">true |
| </span>} |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>TextFieldIndexing { |
| <span class="kw">fn </span>default() -> TextFieldIndexing { |
| TextFieldIndexing { |
| tokenizer: TokenizerName::default(), |
| record: IndexRecordOption::default(), |
| fieldnorms: default_fieldnorms(), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>TextFieldIndexing { |
| <span class="doccomment">/// Sets the tokenizer to be used for a given field. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_tokenizer(<span class="kw-2">mut </span><span class="self">self</span>, tokenizer_name: <span class="kw-2">&</span>str) -> TextFieldIndexing { |
| <span class="self">self</span>.tokenizer = TokenizerName::from_name(tokenizer_name); |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Returns the tokenizer that will be used for this field. |
| </span><span class="kw">pub fn </span>tokenizer(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="self">self</span>.tokenizer.name() |
| } |
| |
| <span class="doccomment">/// Sets fieldnorms |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_fieldnorms(<span class="kw-2">mut </span><span class="self">self</span>, fieldnorms: bool) -> TextFieldIndexing { |
| <span class="self">self</span>.fieldnorms = fieldnorms; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Returns true if and only if [fieldnorms](crate::fieldnorm) are stored. |
| </span><span class="kw">pub fn </span>fieldnorms(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.fieldnorms |
| } |
| |
| <span class="doccomment">/// Sets which information should be indexed with the tokens. |
| /// |
| /// See [`IndexRecordOption`] for more detail. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>set_index_option(<span class="kw-2">mut </span><span class="self">self</span>, index_option: IndexRecordOption) -> TextFieldIndexing { |
| <span class="self">self</span>.record = index_option; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Returns the indexing options associated with this field. |
| /// |
| /// See [`IndexRecordOption`] for more detail. |
| </span><span class="kw">pub fn </span>index_option(<span class="kw-2">&</span><span class="self">self</span>) -> IndexRecordOption { |
| <span class="self">self</span>.record |
| } |
| } |
| |
| <span class="doccomment">/// The field will be untokenized and indexed. |
| </span><span class="kw">pub const </span>STRING: TextOptions = TextOptions { |
| indexing: <span class="prelude-val">Some</span>(TextFieldIndexing { |
| tokenizer: TokenizerName::from_static(NO_TOKENIZER_NAME), |
| fieldnorms: <span class="bool-val">true</span>, |
| record: IndexRecordOption::Basic, |
| }), |
| stored: <span class="bool-val">false</span>, |
| fast: <span class="bool-val">false</span>, |
| }; |
| |
| <span class="doccomment">/// The field will be tokenized and indexed. |
| </span><span class="kw">pub const </span>TEXT: TextOptions = TextOptions { |
| indexing: <span class="prelude-val">Some</span>(TextFieldIndexing { |
| tokenizer: TokenizerName::from_static(DEFAULT_TOKENIZER_NAME), |
| fieldnorms: <span class="bool-val">true</span>, |
| record: IndexRecordOption::WithFreqsAndPositions, |
| }), |
| stored: <span class="bool-val">false</span>, |
| fast: <span class="bool-val">false</span>, |
| }; |
| |
| <span class="kw">impl</span><T: Into<TextOptions>> BitOr<T> <span class="kw">for </span>TextOptions { |
| <span class="kw">type </span>Output = TextOptions; |
| |
| <span class="kw">fn </span>bitor(<span class="self">self</span>, other: T) -> TextOptions { |
| <span class="kw">let </span>other = other.into(); |
| TextOptions { |
| indexing: <span class="self">self</span>.indexing.or(other.indexing), |
| stored: <span class="self">self</span>.stored | other.stored, |
| fast: <span class="self">self</span>.fast | other.fast, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>From<()> <span class="kw">for </span>TextOptions { |
| <span class="kw">fn </span>from(<span class="kw">_</span>: ()) -> TextOptions { |
| TextOptions::default() |
| } |
| } |
| |
| <span class="kw">impl </span>From<StoredFlag> <span class="kw">for </span>TextOptions { |
| <span class="kw">fn </span>from(<span class="kw">_</span>: StoredFlag) -> TextOptions { |
| TextOptions { |
| indexing: <span class="prelude-val">None</span>, |
| stored: <span class="bool-val">true</span>, |
| fast: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>From<FastFlag> <span class="kw">for </span>TextOptions { |
| <span class="kw">fn </span>from(<span class="kw">_</span>: FastFlag) -> TextOptions { |
| TextOptions { |
| indexing: <span class="prelude-val">None</span>, |
| stored: <span class="bool-val">false</span>, |
| fast: <span class="bool-val">true</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><Head, Tail> From<SchemaFlagList<Head, Tail>> <span class="kw">for </span>TextOptions |
| <span class="kw">where |
| </span>Head: Clone, |
| Tail: Clone, |
| <span class="self">Self</span>: BitOr<Output = <span class="self">Self</span>> + From<Head> + From<Tail>, |
| { |
| <span class="kw">fn </span>from(head_tail: SchemaFlagList<Head, Tail>) -> <span class="self">Self </span>{ |
| <span class="self">Self</span>::from(head_tail.head) | <span class="self">Self</span>::from(head_tail.tail) |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use </span><span class="kw">crate</span>::schema::<span class="kw-2">*</span>; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_field_options() { |
| <span class="kw">let </span>field_options = STORED | TEXT; |
| <span class="macro">assert!</span>(field_options.is_stored()); |
| <span class="macro">assert!</span>(field_options.get_indexing_options().is_some()); |
| <span class="kw">let </span><span class="kw-2">mut </span>schema_builder = Schema::builder(); |
| schema_builder.add_text_field(<span class="string">"body"</span>, TEXT); |
| <span class="kw">let </span>schema = schema_builder.build(); |
| <span class="kw">let </span>field = schema.get_field(<span class="string">"body"</span>).unwrap(); |
| <span class="kw">let </span>field_entry = schema.get_field_entry(field); |
| <span class="macro">assert!</span>(<span class="macro">matches!</span>(field_entry.field_type(), |
| <span class="kw-2">&</span>FieldType::Str(<span class="kw-2">ref </span>text_options) |
| <span class="kw">if </span>text_options.get_indexing_options().unwrap().tokenizer() == <span class="string">"default"</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_cmp_index_record_option() { |
| <span class="macro">assert!</span>(IndexRecordOption::WithFreqsAndPositions > IndexRecordOption::WithFreqs); |
| <span class="macro">assert!</span>(IndexRecordOption::WithFreqs > IndexRecordOption::Basic); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>serde_default_test() { |
| <span class="kw">let </span>json = <span class="string">r#" |
| { |
| "indexing": { |
| "record": "basic", |
| "fieldnorms": true, |
| "tokenizer": "default" |
| }, |
| "stored": false |
| } |
| "#</span>; |
| <span class="kw">let </span>options: TextOptions = serde_json::from_str(json).unwrap(); |
| <span class="kw">let </span>options2: TextOptions = serde_json::from_str(<span class="string">"{\"indexing\": {}}"</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(options, options2); |
| <span class="macro">assert_eq!</span>(options.indexing.unwrap().record, IndexRecordOption::Basic); |
| <span class="kw">let </span>options3: TextOptions = serde_json::from_str(<span class="string">"{}"</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(options3.indexing, <span class="prelude-val">None</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> |