FallbackParams class final

Annotations
  • @JsonSerializable()

Constructors

FallbackParams({String? similarQuery, String? filters, dynamic facetFilters, dynamic optionalFilters, dynamic numericFilters, dynamic tagFilters, bool? sumOrFiltersScores, List<String>? restrictSearchableAttributes, List<String>? facets, bool? facetingAfterDistinct, String? aroundLatLng, bool? aroundLatLngViaIP, dynamic aroundRadius, dynamic aroundPrecision, int? minimumAroundRadius, dynamic insideBoundingBox, List<List<double>>? insidePolygon, List<SupportedLanguage>? naturalLanguages, List<String>? ruleContexts, int? personalizationImpact, String? userToken, bool? getRankingInfo, bool? synonyms, bool? clickAnalytics, bool? analytics, List<String>? analyticsTags, bool? percentileComputation, bool? enableABTest, String? query, List<String>? attributesForFaceting, List<String>? replicas, int? paginationLimitedTo, List<String>? unretrievableAttributes, List<String>? disableTypoToleranceOnWords, List<String>? attributesToTransliterate, List<String>? camelCaseAttributes, Object? decompoundedAttributes, List<SupportedLanguage>? indexLanguages, List<String>? disablePrefixOnAttributes, bool? allowCompressionOfIntegerArray, List<String>? numericAttributesForFiltering, String? separatorsToIndex, List<String>? searchableAttributes, Object? userData, Map<String, Map<String, String>>? customNormalization, String? attributeForDistinct, int? maxFacetHits, List<String>? attributesToRetrieve, List<String>? ranking, int? relevancyStrictness, List<String>? attributesToHighlight, List<String>? attributesToSnippet, String? highlightPreTag, String? highlightPostTag, String? snippetEllipsisText, bool? restrictHighlightAndSnippetArrays, int? minWordSizefor1Typo, int? minWordSizefor2Typos, dynamic typoTolerance, bool? allowTyposOnNumericTokens, List<String>? disableTypoToleranceOnAttributes, dynamic ignorePlurals, dynamic removeStopWords, List<SupportedLanguage>? queryLanguages, bool? decompoundQuery, bool? enableRules, bool? enablePersonalization, QueryType? queryType, RemoveWordsIfNoResults? removeWordsIfNoResults, bool? advancedSyntax, dynamic optionalWords, List<String>? disableExactOnAttributes, ExactOnSingleWordQuery? exactOnSingleWordQuery, List<AlternativesAsExact>? alternativesAsExact, List<AdvancedSyntaxFeatures>? advancedSyntaxFeatures, dynamic distinct, bool? replaceSynonymsInHighlight, int? minProximity, List<String>? responseFields, int? maxValuesPerFacet, String? sortFacetValuesBy, bool? attributeCriteriaComputedByMinProximity, RenderingContent? renderingContent, bool? enableReRanking, dynamic reRankingApplyFilter})
Returns a new FallbackParams instance.
const
FallbackParams.fromJson(Map<String, dynamic> json)
factory

Properties

advancedSyntax bool?
Whether to support phrase matching and excluding words from search queries. Use the advancedSyntaxFeatures parameter to control which feature is supported.
final
advancedSyntaxFeatures List<AdvancedSyntaxFeatures>?
Advanced search syntax features you want to support. - exactPhrase. Phrases in quotes must match exactly. For example, sparkly blue \"iPhone case\" only returns records with the exact string "iPhone case". - excludeWords. Query words prefixed with a - must not occur in a record. For example, search -engine matches records that contain "search" but not "engine". This setting only has an effect if advancedSyntax is true.
final
allowCompressionOfIntegerArray bool?
Whether arrays with exclusively non-negative integers should be compressed for better performance. If true, the compressed arrays may be reordered.
final
allowTyposOnNumericTokens bool?
Whether to allow typos on numbers in the search query. Turn off this setting to reduce the number of irrelevant matches when searching in large sets of similar numbers.
final
alternativesAsExact List<AlternativesAsExact>?
Determine which plurals and synonyms should be considered an exact matches. By default, Algolia treats singular and plural forms of a word, and single-word synonyms, as exact matches when searching. For example: - "swimsuit" and "swimsuits" are treated the same - "swimsuit" and "swimwear" are treated the same (if they are synonyms). - ignorePlurals. Plurals and similar declensions added by the ignorePlurals setting are considered exact matches. - singleWordSynonym. Single-word synonyms, such as "NY" = "NYC", are considered exact matches. - multiWordsSynonym. Multi-word synonyms, such as "NY" = "New York", are considered exact matches.
final
analytics bool?
Whether this search will be included in Analytics.
final
analyticsTags List<String>?
Tags to apply to the query for segmenting analytics data.
final
aroundLatLng String?
Coordinates for the center of a circle, expressed as a comma-separated string of latitude and longitude. Only records included within a circle around this central location are included in the results. The radius of the circle is determined by the aroundRadius and minimumAroundRadius settings. This parameter is ignored if you also specify insidePolygon or insideBoundingBox.
final
aroundLatLngViaIP bool?
Whether to obtain the coordinates from the request's IP address.
final
aroundPrecision → dynamic
One of types:
final
aroundRadius → dynamic
One of types:
final
attributeCriteriaComputedByMinProximity bool?
Whether the best matching attribute should be determined by minimum proximity. This setting only affects ranking if the Attribute ranking criterion comes before Proximity in the ranking setting. If true, the best matching attribute is selected based on the minimum proximity of multiple matches. Otherwise, the best matching attribute is determined by the order in the searchableAttributes setting.
final
attributeForDistinct String?
Attribute that should be used to establish groups of results. Attribute names are case-sensitive. All records with the same value for this attribute are considered a group. You can combine attributeForDistinct with the distinct search parameter to control how many items per group are included in the search results. If you want to use the same attribute also for faceting, use the afterDistinct modifier of the attributesForFaceting setting. This applies faceting after deduplication, which will result in accurate facet counts.
final
attributesForFaceting List<String>?
Attributes used for faceting. Facets are attributes that let you categorize search results. They can be used for filtering search results. By default, no attribute is used for faceting. Attribute names are case-sensitive. Modifiers - filterOnly(\"ATTRIBUTE\"). Allows the attribute to be used as a filter but doesn't evaluate the facet values. - searchable(\"ATTRIBUTE\"). Allows searching for facet values. - afterDistinct(\"ATTRIBUTE\"). Evaluates the facet count after deduplication with distinct. This ensures accurate facet counts. You can apply this modifier to searchable facets: afterDistinct(searchable(ATTRIBUTE)).
final
attributesToHighlight List<String>?
Attributes to highlight. By default, all searchable attributes are highlighted. Use * to highlight all attributes or use an empty array [] to turn off highlighting. Attribute names are case-sensitive. With highlighting, strings that match the search query are surrounded by HTML tags defined by highlightPreTag and highlightPostTag. You can use this to visually highlight matching parts of a search query in your UI. For more information, see Highlighting and snippeting.
final
attributesToRetrieve List<String>?
Attributes to include in the API response. To reduce the size of your response, you can retrieve only some of the attributes. Attribute names are case-sensitive. - * retrieves all attributes, except attributes included in the customRanking and unretrievableAttributes settings. - To retrieve all attributes except a specific one, prefix the attribute with a dash and combine it with the *: [\"*\", \"-ATTRIBUTE\"]. - The objectID attribute is always included.
final
attributesToSnippet List<String>?
Attributes for which to enable snippets. Attribute names are case-sensitive. Snippets provide additional context to matched words. If you enable snippets, they include 10 words, including the matched word. The matched word will also be wrapped by HTML tags for highlighting. You can adjust the number of words with the following notation: ATTRIBUTE:NUMBER, where NUMBER is the number of words to be extracted.
final
attributesToTransliterate List<String>?
Attributes, for which you want to support Japanese transliteration. Transliteration supports searching in any of the Japanese writing systems. To support transliteration, you must set the indexing language to Japanese. Attribute names are case-sensitive.
final
camelCaseAttributes List<String>?
Attributes for which to split camel case words. Attribute names are case-sensitive.
final
clickAnalytics bool?
Whether to include a queryID attribute in the response. The query ID is a unique identifier for a search query and is required for tracking click and conversion events.
final
customNormalization Map<String, Map<String, String>>?
Characters and their normalized replacements. This overrides Algolia's default normalization.
final
decompoundedAttributes Object?
Searchable attributes to which Algolia should apply word segmentation (decompounding). Attribute names are case-sensitive. Compound words are formed by combining two or more individual words, and are particularly prevalent in Germanic languages—for example, "firefighter". With decompounding, the individual components are indexed separately. You can specify different lists for different languages. Decompounding is supported for these languages: Dutch (nl), German (de), Finnish (fi), Danish (da), Swedish (sv), and Norwegian (no). Decompounding doesn't work for words with non-spacing mark Unicode characters. For example, Gartenstühle won't be decompounded if the ü consists of u (U+0075) and ◌̈ (U+0308).
final
decompoundQuery bool?
Whether to split compound words in the query into their building blocks. For more information, see Word segmentation. Word segmentation is supported for these languages: German, Dutch, Finnish, Swedish, and Norwegian. Decompounding doesn't work for words with non-spacing mark Unicode characters. For example, Gartenstühle won't be decompounded if the ü consists of u (U+0075) and ◌̈ (U+0308).
final
disableExactOnAttributes List<String>?
Searchable attributes for which you want to turn off the Exact ranking criterion. Attribute names are case-sensitive. This can be useful for attributes with long values, where the likelihood of an exact match is high, such as product descriptions. Turning off the Exact ranking criterion for these attributes favors exact matching on other attributes. This reduces the impact of individual attributes with a lot of content on ranking.
final
disablePrefixOnAttributes List<String>?
Searchable attributes for which you want to turn off prefix matching. Attribute names are case-sensitive.
final
disableTypoToleranceOnAttributes List<String>?
Attributes for which you want to turn off typo tolerance. Attribute names are case-sensitive. Returning only exact matches can help when: - Searching in hyphenated attributes. - Reducing the number of matches when you have too many. This can happen with attributes that are long blocks of text, such as product descriptions. Consider alternatives such as disableTypoToleranceOnWords or adding synonyms if your attributes have intentional unusual spellings that might look like typos.
final
disableTypoToleranceOnWords List<String>?
Creates a list of words which require exact matches. This also turns off word splitting and concatenation for the specified words.
final
distinct → dynamic
One of types:
final
enableABTest bool?
Whether to enable A/B testing for this search.
final
enablePersonalization bool?
Whether to enable Personalization.
final
enableReRanking bool?
Whether this search will use Dynamic Re-Ranking. This setting only has an effect if you activated Dynamic Re-Ranking for this index in the Algolia dashboard.
final
enableRules bool?
Whether to enable rules.
final
exactOnSingleWordQuery ExactOnSingleWordQuery?
final
facetFilters → dynamic
One of types:
final
facetingAfterDistinct bool?
Whether faceting should be applied after deduplication with distinct. This leads to accurate facet counts when using faceting in combination with distinct. It's usually better to use afterDistinct modifiers in the attributesForFaceting setting, as facetingAfterDistinct only computes correct facet counts if all records have the same facet values for the attributeForDistinct.
final
facets List<String>?
Facets for which to retrieve facet values that match the search criteria and the number of matching facet values. To retrieve all facets, use the wildcard character *. For more information, see facets.
final
filters String?
Filter expression to only include items that match the filter criteria in the response. You can use these filter expressions: - Numeric filters. <facet> <op> <number>, where <op> is one of <, <=, =, !=, >, >=. - Ranges. <facet>:<lower> TO <upper> where <lower> and <upper> are the lower and upper limits of the range (inclusive). - Facet filters. <facet>:<value> where <facet> is a facet attribute (case-sensitive) and <value> a facet value. - Tag filters. _tags:<value> or just <value> (case-sensitive). - Boolean filters. <facet>: true | false. You can combine filters with AND, OR, and NOT operators with the following restrictions: - You can only combine filters of the same type with OR. Not supported: facet:value OR num > 3. - You can't use NOT with combinations of filters. Not supported: NOT(facet:value OR facet:value) - You can't combine conjunctions (AND) with OR. Not supported: facet:value OR (facet:value AND facet:value) Use quotes around your filters, if the facet attribute name or facet value has spaces, keywords (OR, AND, NOT), or quotes. If a facet attribute is an array, the filter matches if it matches at least one element of the array. For more information, see Filters.
final
getRankingInfo bool?
Whether the search response should include detailed ranking information.
final
hashCode int
The hash code for this object.
no setteroverride
highlightPostTag String?
HTML tag to insert after the highlighted parts in all highlighted results and snippets.
final
highlightPreTag String?
HTML tag to insert before the highlighted parts in all highlighted results and snippets.
final
ignorePlurals → dynamic
One of types:
final
indexLanguages List<SupportedLanguage>?
Languages for language-specific processing steps, such as word detection and dictionary settings. You should always specify an indexing language. If you don't specify an indexing language, the search engine uses all supported languages, or the languages you specified with the ignorePlurals or removeStopWords parameters. This can lead to unexpected search results. For more information, see Language-specific configuration.
final
insideBoundingBox → dynamic
One of types:
final
insidePolygon List<List<double>>?
Coordinates of a polygon in which to search. Polygons are defined by 3 to 10,000 points. Each point is represented by its latitude and longitude. Provide multiple polygons as nested arrays. For more information, see filtering inside polygons. This parameter is ignored if you also specify insideBoundingBox.
final
maxFacetHits int?
Maximum number of facet values to return when searching for facet values.
final
maxValuesPerFacet int?
Maximum number of facet values to return for each facet.
final
minimumAroundRadius int?
Minimum radius (in meters) for a search around a location when aroundRadius isn't set.
final
minProximity int?
Minimum proximity score for two matching words. This adjusts the Proximity ranking criterion by equally scoring matches that are farther apart. For example, if minProximity is 2, neighboring matches and matches with one word between them would have the same score.
final
minWordSizefor1Typo int?
Minimum number of characters a word in the search query must contain to accept matches with one typo.
final
minWordSizefor2Typos int?
Minimum number of characters a word in the search query must contain to accept matches with two typos.
final
naturalLanguages List<SupportedLanguage>?
ISO language codes that adjust settings that are useful for processing natural language queries (as opposed to keyword searches): - Sets removeStopWords and ignorePlurals to the list of provided languages. - Sets removeWordsIfNoResults to allOptional. - Adds a natural_language attribute to ruleContexts and analyticsTags.
final
numericAttributesForFiltering List<String>?
Numeric attributes that can be used as numerical filters. Attribute names are case-sensitive. By default, all numeric attributes are available as numerical filters. For faster indexing, reduce the number of numeric attributes. To turn off filtering for all numeric attributes, specify an attribute that doesn't exist in your index, such as NO_NUMERIC_FILTERING. Modifier - equalOnly(\"ATTRIBUTE\"). Support only filtering based on equality comparisons = and !=.
final
numericFilters → dynamic
One of types:
final
optionalFilters → dynamic
One of types:
final
optionalWords → dynamic
One of types:
final
paginationLimitedTo int?
Maximum number of search results that can be obtained through pagination. Higher pagination limits might slow down your search. For pagination limits above 1,000, the sorting of results beyond the 1,000th hit can't be guaranteed.
final
percentileComputation bool?
Whether to include this search when calculating processing-time percentiles.
final
personalizationImpact int?
Impact that Personalization should have on this search. The higher this value is, the more Personalization determines the ranking compared to other factors. For more information, see Understanding Personalization impact.
final
query String?
Search query.
final
queryLanguages List<SupportedLanguage>?
Languages for language-specific query processing steps such as plurals, stop-word removal, and word-detection dictionaries. This setting sets a default list of languages used by the removeStopWords and ignorePlurals settings. This setting also sets a dictionary for word detection in the logogram-based CJK languages. To support this, you must place the CJK language first. You should always specify a query language. If you don't specify an indexing language, the search engine uses all supported languages, or the languages you specified with the ignorePlurals or removeStopWords parameters. This can lead to unexpected search results. For more information, see Language-specific configuration.
final
queryType QueryType?
final
ranking List<String>?
Determines the order in which Algolia returns your results. By default, each entry corresponds to a ranking criteria. The tie-breaking algorithm sequentially applies each criterion in the order they're specified. If you configure a replica index for sorting by an attribute, you put the sorting attribute at the top of the list. Modifiers - asc(\"ATTRIBUTE\"). Sort the index by the values of an attribute, in ascending order. - desc(\"ATTRIBUTE\"). Sort the index by the values of an attribute, in descending order. Before you modify the default setting, you should test your changes in the dashboard, and by A/B testing.
final
relevancyStrictness int?
Relevancy threshold below which less relevant results aren't included in the results. You can only set relevancyStrictness on virtual replica indices. Use this setting to strike a balance between the relevance and number of returned results.
final
removeStopWords → dynamic
One of types:
final
removeWordsIfNoResults RemoveWordsIfNoResults?
final
renderingContent RenderingContent?
final
replaceSynonymsInHighlight bool?
Whether to replace a highlighted word with the matched synonym. By default, the original words are highlighted even if a synonym matches. For example, with home as a synonym for house and a search for home, records matching either "home" or "house" are included in the search results, and either "home" or "house" are highlighted. With replaceSynonymsInHighlight set to true, a search for home still matches the same records, but all occurrences of "house" are replaced by "home" in the highlighted response.
final
replicas List<String>?
Creates replica indices. Replicas are copies of a primary index with the same records but different settings, synonyms, or rules. If you want to offer a different ranking or sorting of your search results, you'll use replica indices. All index operations on a primary index are automatically forwarded to its replicas. To add a replica index, you must provide the complete set of replicas to this parameter. If you omit a replica from this list, the replica turns into a regular, standalone index that will no longer be synced with the primary index. Modifier - virtual(\"REPLICA\"). Create a virtual replica, Virtual replicas don't increase the number of records and are optimized for Relevant sorting.
final
reRankingApplyFilter → dynamic
One of types:
final
responseFields List<String>?
Properties to include in the API response of search and browse requests. By default, all response properties are included. To reduce the response size, you can select, which attributes should be included. You can't exclude these properties: message, warning, cursor, serverUsed, indexUsed, abTestVariantID, parsedQuery, or any property triggered by the getRankingInfo parameter. Don't exclude properties that you might need in your search UI.
final
restrictHighlightAndSnippetArrays bool?
Whether to restrict highlighting and snippeting to items that at least partially matched the search query. By default, all items are highlighted and snippeted.
final
restrictSearchableAttributes List<String>?
Restricts a search to a subset of your searchable attributes. Attribute names are case-sensitive.
final
ruleContexts List<String>?
Assigns a rule context to the search query. Rule contexts are strings that you can use to trigger matching rules.
final
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
searchableAttributes List<String>?
Attributes used for searching. Attribute names are case-sensitive. By default, all attributes are searchable and the Attribute ranking criterion is turned off. With a non-empty list, Algolia only returns results with matches in the selected attributes. In addition, the Attribute ranking criterion is turned on: matches in attributes that are higher in the list of searchableAttributes rank first. To make matches in two attributes rank equally, include them in a comma-separated string, such as \"title,alternate_title\". Attributes with the same priority are always unordered. For more information, see Searchable attributes. Modifier - unordered(\"ATTRIBUTE\"). Ignore the position of a match within the attribute. Without a modifier, matches at the beginning of an attribute rank higher than matches at the end.
final
separatorsToIndex String?
Control which non-alphanumeric characters are indexed. By default, Algolia ignores non-alphanumeric characters like hyphen (-), plus (+), and parentheses ((,)). To include such characters, define them with separatorsToIndex. Separators are all non-letter characters except spaces and currency characters, such as $€£¥. With separatorsToIndex, Algolia treats separator characters as separate words. For example, in a search for "Disney+", Algolia considers "Disney" and "+" as two separate words.
final
similarQuery String?
Keywords to be used instead of the search query to conduct a more broader search. Using the similarQuery parameter changes other settings: - queryType is set to prefixNone. - removeStopWords is set to true. - words is set as the first ranking criterion. - All remaining words are treated as optionalWords. Since the similarQuery is supposed to do a broad search, they usually return many results. Combine it with filters to narrow down the list of results.
final
snippetEllipsisText String?
String used as an ellipsis indicator when a snippet is truncated.
final
sortFacetValuesBy String?
Order in which to retrieve facet values. - count. Facet values are retrieved by decreasing count. The count is the number of matching records containing this facet value. - alpha. Retrieve facet values alphabetically. This setting doesn't influence how facet values are displayed in your UI (see renderingContent). For more information, see facet value display.
final
sumOrFiltersScores bool?
Whether to sum all filter scores. If true, all filter scores are summed. Otherwise, the maximum filter score is kept. For more information, see filter scores.
final
synonyms bool?
Whether to take into account an index's synonyms for this search.
final
tagFilters → dynamic
One of types:
final
typoTolerance → dynamic
One of types:
final
unretrievableAttributes List<String>?
Attributes that can't be retrieved at query time. This can be useful if you want to use an attribute for ranking or to restrict access, but don't want to include it in the search results. Attribute names are case-sensitive.
final
userData Object?
An object with custom data. You can store up to 32kB as custom data.
final
userToken String?
Unique pseudonymous or anonymous user identifier. This helps with analytics and click and conversion events. For more information, see user token.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() Map<String, dynamic>
toString() String
A string representation of this object.
override

Operators

operator ==(Object other) bool
The equality operator.
override