Struct aws_sdk_cloudsearchdomain::Client
source · pub struct Client { /* private fields */ }
Expand description
Client for Amazon CloudSearch Domain
Client for invoking operations on Amazon CloudSearch Domain. Each operation on Amazon CloudSearch Domain is a method on this
this struct. .send()
MUST be invoked on the generated operations to dispatch the request to the service.
§Constructing a Client
A Config
is required to construct a client. For most use cases, the aws-config
crate should be used to automatically resolve this config using
aws_config::load_from_env()
, since this will resolve an SdkConfig
which can be shared
across multiple different AWS SDK clients. This config resolution process can be customized
by calling aws_config::from_env()
instead, which returns a ConfigLoader
that uses
the builder pattern to customize the default config.
In the simplest case, creating a client looks as follows:
let config = aws_config::load_from_env().await;
let client = aws_sdk_cloudsearchdomain::Client::new(&config);
Occasionally, SDKs may have additional service-specific values that can be set on the Config
that
is absent from SdkConfig
, or slightly different settings for a specific client may be desired.
The Config
struct implements From<&SdkConfig>
, so setting these specific settings can be
done as follows:
let sdk_config = ::aws_config::load_from_env().await;
let config = aws_sdk_cloudsearchdomain::config::Builder::from(&sdk_config)
.some_service_specific_setting("value")
.build();
See the aws-config
docs and Config
for more information on customizing configuration.
Note: Client construction is expensive due to connection thread pool initialization, and should be done once at application start-up.
§Using the Client
A client has a function for every operation that can be performed by the service.
For example, the Search
operation has
a Client::search
, function which returns a builder for that operation.
The fluent builder ultimately has a send()
function that returns an async future that
returns a result, as illustrated below:
let result = client.search()
.cursor("example")
.send()
.await;
The underlying HTTP requests that get made by this can be modified with the customize_operation
function on the fluent builder. See the customize
module for more
information.
Implementations§
source§impl Client
impl Client
sourcepub fn search(&self) -> SearchFluentBuilder
pub fn search(&self) -> SearchFluentBuilder
Constructs a fluent builder for the Search
operation.
- The fluent builder is configurable:
cursor(impl Into<String>)
/set_cursor(Option<String>)
:
required: falseRetrieves a cursor value you can use to page through large result sets. Use the
size
parameter to control the number of hits to include in each response. You can specify either thecursor
orstart
parameter in a request; they are mutually exclusive. To get the first cursor, set the cursor value toinitial
. In subsequent requests, specify the cursor value returned in the hits section of the response.For more information, see Paginating Results in the Amazon CloudSearch Developer Guide.
expr(impl Into<String>)
/set_expr(Option<String>)
:
required: falseDefines one or more numeric expressions that can be used to sort results or specify search or filter criteria. You can also specify expressions as return fields.
You specify the expressions in JSON using the form
{“EXPRESSIONNAME”:“EXPRESSION”}
. You can define and use multiple expressions in a search request. For example:{“expression1”:“_score*rating”, “expression2”:“(1/rank)*year”}
For information about the variables, operators, and functions you can use in expressions, see Writing Expressions in the Amazon CloudSearch Developer Guide.
facet(impl Into<String>)
/set_facet(Option<String>)
:
required: falseSpecifies one or more fields for which to get facet information, and options that control how the facet information is returned. Each specified field must be facet-enabled in the domain configuration. The fields and options are specified in JSON using the form
{“FIELD”:{“OPTION”:VALUE,“OPTION:“STRING”},“FIELD”:{“OPTION”:VALUE,“OPTION”:“STRING”}}
.You can specify the following faceting options:
-
buckets
specifies an array of the facet values or ranges to count. Ranges are specified using the same syntax that you use to search for a range of values. For more information, see Searching for a Range of Values in the Amazon CloudSearch Developer Guide. Buckets are returned in the order they are specified in the request. Thesort
andsize
options are not valid if you specifybuckets
. -
size
specifies the maximum number of facets to include in the results. By default, Amazon CloudSearch returns counts for the top 10. Thesize
parameter is only valid when you specify thesort
option; it cannot be used in conjunction withbuckets
. -
sort
specifies how you want to sort the facets in the results:bucket
orcount
. Specifybucket
to sort alphabetically or numerically by facet value (in ascending order). Specifycount
to sort by the facet counts computed for each facet value (in descending order). To retrieve facet counts for particular values or ranges of values, use thebuckets
option instead ofsort
.
If no facet options are specified, facet counts are computed for all field values, the facets are sorted by facet count, and the top 10 facets are returned in the results.
To count particular buckets of values, use the
buckets
option. For example, the following request uses thebuckets
option to calculate and return facet counts by decade.{“year”:{“buckets”:[“[1970,1979]”,“[1980,1989]”,“[1990,1999]”,“[2000,2009]”,“[2010,}”]}}
To sort facets by facet count, use the
count
option. For example, the following request sets thesort
option tocount
to sort the facet values by facet count, with the facet values that have the most matching documents listed first. Setting thesize
option to 3 returns only the top three facet values.{“year”:{“sort”:“count”,“size”:3}}
To sort the facets by value, use the
bucket
option. For example, the following request sets thesort
option tobucket
to sort the facet values numerically by year, with earliest year listed first.{“year”:{“sort”:“bucket”}}
For more information, see Getting and Using Facet Information in the Amazon CloudSearch Developer Guide.
-
filter_query(impl Into<String>)
/set_filter_query(Option<String>)
:
required: falseSpecifies a structured query that filters the results of a search without affecting how the results are scored and sorted. You use
filterQuery
in conjunction with thequery
parameter to filter the documents that match the constraints specified in thequery
parameter. Specifying a filter controls only which matching documents are included in the results, it has no effect on how they are scored and sorted. ThefilterQuery
parameter supports the full structured query syntax.For more information about using filters, see Filtering Matching Documents in the Amazon CloudSearch Developer Guide.
highlight(impl Into<String>)
/set_highlight(Option<String>)
:
required: falseRetrieves highlights for matches in the specified
text
ortext-array
fields. Each specified field must be highlight enabled in the domain configuration. The fields and options are specified in JSON using the form{“FIELD”:{“OPTION”:VALUE,“OPTION:“STRING”},“FIELD”:{“OPTION”:VALUE,“OPTION”:“STRING”}}
.You can specify the following highlight options:
format
: specifies the format of the data in the text field:text
orhtml
. When data is returned as HTML, all non-alphanumeric characters are encoded. The default ishtml
.max_phrases
: specifies the maximum number of occurrences of the search term(s) you want to highlight. By default, the first occurrence is highlighted.pre_tag
: specifies the string to prepend to an occurrence of a search term. The default for HTML highlights is<em>
. The default for text highlights is.
post_tag
: specifies the string to append to an occurrence of a search term. The default for HTML highlights is</em>
. The default for text highlights is.
If no highlight options are specified for a field, the returned field text is treated as HTML and the first match is highlighted with emphasis tags:
<em>search-term</em>
.For example, the following request retrieves highlights for the
actors
andtitle
fields.{ “actors”: {}, “title”: {“format”: “text”,“max_phrases”: 2,“pre_tag”: “”,“post_tag”: “”} }
partial(bool)
/set_partial(Option<bool>)
:
required: falseEnables partial results to be returned if one or more index partitions are unavailable. When your search index is partitioned across multiple search instances, by default Amazon CloudSearch only returns results if every partition can be queried. This means that the failure of a single search instance can result in 5xx (internal server) errors. When you enable partial results, Amazon CloudSearch returns whatever results are available and includes the percentage of documents searched in the search results (percent-searched). This enables you to more gracefully degrade your users’ search experience. For example, rather than displaying no results, you could display the partial results and a message indicating that the results might be incomplete due to a temporary system outage.
query(impl Into<String>)
/set_query(Option<String>)
:
required: trueSpecifies the search criteria for the request. How you specify the search criteria depends on the query parser used for the request and the parser options specified in the
queryOptions
parameter. By default, thesimple
query parser is used to process requests. To use thestructured
,lucene
, ordismax
query parser, you must also specify thequeryParser
parameter.For more information about specifying search criteria, see Searching Your Data in the Amazon CloudSearch Developer Guide.
query_options(impl Into<String>)
/set_query_options(Option<String>)
:
required: falseConfigures options for the query parser specified in the
queryParser
parameter. You specify the options in JSON using the following form{“OPTION1”:“VALUE1”,“OPTION2”:VALUE2“…“OPTIONN”:“VALUEN”}.
The options you can configure vary according to which parser you use:
defaultOperator
: The default operator used to combine individual terms in the search string. For example:defaultOperator: ‘or’
. For thedismax
parser, you specify a percentage that represents the percentage of terms in the search string (rounded down) that must match, rather than a default operator. A value of0%
is the equivalent to OR, and a value of100%
is equivalent to AND. The percentage must be specified as a value in the range 0-100 followed by the percent (%) symbol. For example,defaultOperator: 50%
. Valid values:and
,or
, a percentage in the range 0%-100% (dismax
). Default:and
(simple
,structured
,lucene
) or100
(dismax
). Valid for:simple
,structured
,lucene
, anddismax
.fields
: An array of the fields to search when no fields are specified in a search. If no fields are specified in a search and this option is not specified, all text and text-array fields are searched. You can specify a weight for each field to control the relative importance of each field when Amazon CloudSearch calculates relevance scores. To specify a field weight, append a caret (^
) symbol and the weight to the field name. For example, to boost the importance of thetitle
field over thedescription
field you could specify:“fields”:[“title^5”,“description”]
. Valid values: The name of any configured field and an optional numeric value greater than zero. Default: Alltext
andtext-array
fields. Valid for:simple
,structured
,lucene
, anddismax
.operators
: An array of the operators or special characters you want to disable for the simple query parser. If you disable theand
,or
, ornot
operators, the corresponding operators (+
,|
,-
) have no special meaning and are dropped from the search string. Similarly, disablingprefix
disables the wildcard operator (*
) and disablingphrase
disables the ability to search for phrases by enclosing phrases in double quotes. Disabling precedence disables the ability to control order of precedence using parentheses. Disablingnear
disables the ability to use the ~ operator to perform a sloppy phrase search. Disabling thefuzzy
operator disables the ability to use the ~ operator to perform a fuzzy search.escape
disables the ability to use a backslash (</code>) to escape special characters within the search string. Disabling whitespace is an advanced option that prevents the parser from tokenizing on whitespace, which can be useful for Vietnamese. (It prevents Vietnamese words from being split incorrectly.) For example, you could disable all operators other than the phrase operator to support just simple term and phrase queries:
“operators”:[“and”,“not”,“or”, “prefix”]
. Valid values:and
,escape
,fuzzy
,near
,not
,or
,phrase
,precedence
,prefix
,whitespace
. Default: All operators and special characters are enabled. Valid for:simple
.phraseFields
: An array of thetext
ortext-array
fields you want to use for phrase searches. When the terms in the search string appear in close proximity within a field, the field scores higher. You can specify a weight for each field to boost that score. ThephraseSlop
option controls how much the matches can deviate from the search string and still be boosted. To specify a field weight, append a caret (^
) symbol and the weight to the field name. For example, to boost phrase matches in thetitle
field over theabstract
field, you could specify:“phraseFields”:[“title^3”, “plot”]
Valid values: The name of anytext
ortext-array
field and an optional numeric value greater than zero. Default: No fields. If you don’t specify any fields withphraseFields
, proximity scoring is disabled even ifphraseSlop
is specified. Valid for:dismax
.phraseSlop
: An integer value that specifies how much matches can deviate from the search phrase and still be boosted according to the weights specified in thephraseFields
option; for example,phraseSlop: 2
. You must also specifyphraseFields
to enable proximity scoring. Valid values: positive integers. Default: 0. Valid for:dismax
.explicitPhraseSlop
: An integer value that specifies how much a match can deviate from the search phrase when the phrase is enclosed in double quotes in the search string. (Phrases that exceed this proximity distance are not considered a match.) For example, to specify a slop of three for dismax phrase queries, you would specify“explicitPhraseSlop”:3
. Valid values: positive integers. Default: 0. Valid for:dismax
.tieBreaker
: When a term in the search string is found in a document’s field, a score is calculated for that field based on how common the word is in that field compared to other documents. If the term occurs in multiple fields within a document, by default only the highest scoring field contributes to the document’s overall score. You can specify atieBreaker
value to enable the matches in lower-scoring fields to contribute to the document’s score. That way, if two documents have the same max field score for a particular term, the score for the document that has matches in more fields will be higher. The formula for calculating the score with a tieBreaker is(max field score) + (tieBreaker) * (sum of the scores for the rest of the matching fields)
. SettieBreaker
to 0 to disregard all but the highest scoring field (pure max):“tieBreaker”:0
. Set to 1 to sum the scores from all fields (pure sum):“tieBreaker”:1
. Valid values: 0.0 to 1.0. Default: 0.0. Valid for:dismax
.
query_parser(QueryParser)
/set_query_parser(Option<QueryParser>)
:
required: falseSpecifies which query parser to use to process the request. If
queryParser
is not specified, Amazon CloudSearch uses thesimple
query parser.Amazon CloudSearch supports four query parsers:
simple
: perform simple searches oftext
andtext-array
fields. By default, thesimple
query parser searches alltext
andtext-array
fields. You can specify which fields to search by with thequeryOptions
parameter. If you prefix a search term with a plus sign (+) documents must contain the term to be considered a match. (This is the default, unless you configure the default operator with thequeryOptions
parameter.) You can use the-
(NOT),|
(OR), and*
(wildcard) operators to exclude particular terms, find results that match any of the specified terms, or search for a prefix. To search for a phrase rather than individual terms, enclose the phrase in double quotes. For more information, see Searching for Text in the Amazon CloudSearch Developer Guide.structured
: perform advanced searches by combining multiple expressions to define the search criteria. You can also search within particular fields, search for values and ranges of values, and use advanced options such as term boosting,matchall
, andnear
. For more information, see Constructing Compound Queries in the Amazon CloudSearch Developer Guide.lucene
: search using the Apache Lucene query parser syntax. For more information, see Apache Lucene Query Parser Syntax.dismax
: search using the simplified subset of the Apache Lucene query parser syntax defined by the DisMax query parser. For more information, see DisMax Query Parser Syntax.
r#return(impl Into<String>)
/set_return(Option<String>)
:
required: falseSpecifies the field and expression values to include in the response. Multiple fields or expressions are specified as a comma-separated list. By default, a search response includes all return enabled fields (
_all_fields
). To return only the document IDs for the matching documents, specify_no_fields
. To retrieve the relevance score calculated for each document, specify_score
.size(i64)
/set_size(Option<i64>)
:
required: falseSpecifies the maximum number of search hits to include in the response.
sort(impl Into<String>)
/set_sort(Option<String>)
:
required: falseSpecifies the fields or custom expressions to use to sort the search results. Multiple fields or expressions are specified as a comma-separated list. You must specify the sort direction (
asc
ordesc
) for each field; for example,year desc,title asc
. To use a field to sort results, the field must be sort-enabled in the domain configuration. Array type fields cannot be used for sorting. If nosort
parameter is specified, results are sorted by their default relevance scores in descending order:_score desc
. You can also sort by document ID (_id asc
) and version (_version desc
).For more information, see Sorting Results in the Amazon CloudSearch Developer Guide.
start(i64)
/set_start(Option<i64>)
:
required: falseSpecifies the offset of the first search hit you want to return. Note that the result set is zero-based; the first result is at index 0. You can specify either the
start
orcursor
parameter in a request, they are mutually exclusive.For more information, see Paginating Results in the Amazon CloudSearch Developer Guide.
stats(impl Into<String>)
/set_stats(Option<String>)
:
required: falseSpecifies one or more fields for which to get statistics information. Each specified field must be facet-enabled in the domain configuration. The fields are specified in JSON using the form:
{“FIELD-A”:{},“FIELD-B”:{}}
There are currently no options supported for statistics.
- On success, responds with
SearchOutput
with field(s):status(Option<SearchStatus>)
:The status information returned for the search request.
hits(Option<Hits>)
:The documents that match the search criteria.
facets(Option<HashMap::<String, BucketInfo>>)
:The requested facet information.
stats(Option<HashMap::<String, FieldStats>>)
:The requested field statistics information.
- On failure, responds with
SdkError<SearchError>
source§impl Client
impl Client
sourcepub fn suggest(&self) -> SuggestFluentBuilder
pub fn suggest(&self) -> SuggestFluentBuilder
Constructs a fluent builder for the Suggest
operation.
- The fluent builder is configurable:
query(impl Into<String>)
/set_query(Option<String>)
:
required: trueSpecifies the string for which you want to get suggestions.
suggester(impl Into<String>)
/set_suggester(Option<String>)
:
required: trueSpecifies the name of the suggester to use to find suggested matches.
size(i64)
/set_size(Option<i64>)
:
required: falseSpecifies the maximum number of suggestions to return.
- On success, responds with
SuggestOutput
with field(s):status(Option<SuggestStatus>)
:The status of a
SuggestRequest
. Contains the resource ID (rid
) and how long it took to process the request (timems
).suggest(Option<SuggestModel>)
:Container for the matching search suggestion information.
- On failure, responds with
SdkError<SuggestError>
source§impl Client
impl Client
sourcepub fn upload_documents(&self) -> UploadDocumentsFluentBuilder
pub fn upload_documents(&self) -> UploadDocumentsFluentBuilder
Constructs a fluent builder for the UploadDocuments
operation.
- The fluent builder is configurable:
documents(ByteStream)
/set_documents(ByteStream)
:
required: trueA batch of documents formatted in JSON or HTML.
content_type(ContentType)
/set_content_type(Option<ContentType>)
:
required: trueThe format of the batch you are uploading. Amazon CloudSearch supports two document batch formats:
- application/json
- application/xml
- On success, responds with
UploadDocumentsOutput
with field(s):status(Option<String>)
:The status of an
UploadDocumentsRequest
.adds(i64)
:The number of documents that were added to the search domain.
deletes(i64)
:The number of documents that were deleted from the search domain.
warnings(Option<Vec::<DocumentServiceWarning>>)
:Any warnings returned by the document service about the documents being uploaded.
- On failure, responds with
SdkError<UploadDocumentsError>
source§impl Client
impl Client
sourcepub fn from_conf(conf: Config) -> Self
pub fn from_conf(conf: Config) -> Self
Creates a new client from the service Config
.
§Panics
This method will panic in the following cases:
- Retries or timeouts are enabled without a
sleep_impl
configured. - Identity caching is enabled without a
sleep_impl
andtime_source
configured. - No
behavior_version
is provided.
The panic message for each of these will have instructions on how to resolve them.
source§impl Client
impl Client
sourcepub fn new(sdk_config: &SdkConfig) -> Self
pub fn new(sdk_config: &SdkConfig) -> Self
Creates a new client from an SDK Config.
§Panics
- This method will panic if the
sdk_config
is missing an async sleep implementation. If you experience this panic, set thesleep_impl
on the Config passed into this function to fix it. - This method will panic if the
sdk_config
is missing an HTTP connector. If you experience this panic, set thehttp_connector
on the Config passed into this function to fix it. - This method will panic if no
BehaviorVersion
is provided. If you experience this panic, setbehavior_version
on the Config or enable thebehavior-version-latest
Cargo feature.