Class: Elastomer::Client::Docs
- Inherits:
-
Object
- Object
- Elastomer::Client::Docs
- Defined in:
- lib/elastomer/client/docs.rb
Constant Summary collapse
- SPECIAL_KEYS =
%w[index type id version version_type op_type routing parent timestamp ttl consistency replication refresh].freeze
- SPECIAL_KEYS_HASH =
SPECIAL_KEYS.inject({}) { |h, k| h[k.to_sym] = "_#{k}"; h }.freeze
Instance Attribute Summary collapse
-
#client ⇒ Object
readonly
Returns the value of attribute client.
-
#name ⇒ Object
readonly
Returns the value of attribute name.
-
#type ⇒ Object
readonly
Returns the value of attribute type.
Instance Method Summary collapse
-
#bulk(params = {}, &block) ⇒ Object
Perform bulk indexing and/or delete operations.
-
#count(query, params = nil) ⇒ Object
Executes a search query, but instead of returning results, returns the number of documents matched.
-
#defaults ⇒ Object
Internal: Returns a Hash containing default parameters.
-
#delete(params = {}) ⇒ Object
Delete a document from the index based on the document ID.
-
#delete_by_query(query, params = nil) ⇒ Object
Delete documents from one or more indices and one or more types based on a query.
-
#exists?(params = {}) ⇒ Boolean
(also: #exist?)
Check to see if a document exists.
-
#explain(query, params = nil) ⇒ Object
Compute a score explanation for a query and a specific document.
-
#extract_params(query, params = nil) ⇒ Object
Internal: Allow params to be passed as the first argument to methods that take both an optional query hash and params.
-
#from_document(document) ⇒ Object
Internal: Given a ‘document` generate an options hash that will override parameters based on the content of the document.
-
#get(params = {}) ⇒ Object
Retrieve a document from the index based on its ID.
-
#index(document, params = {}) ⇒ Object
Adds or updates a document in the index, making it searchable.
-
#initialize(client, name, type = nil) ⇒ Docs
constructor
Create a new document client for making API requests that pertain to the indexing and searching of documents in a search index.
-
#more_like_this(query, params = nil) ⇒ Object
Deprecated - use the More Like This query: www.elastic.co/guide/en/elasticsearch/reference/2.3/query-dsl-mlt-query.html Search for documents similar to a specific document.
-
#multi_get(body, params = {}) ⇒ Object
(also: #mget)
Allows you to get multiple documents based on an index, type, and id (and possibly routing).
-
#multi_percolate(params = {}, &block) ⇒ Object
Execute an array of percolate actions in bulk.
-
#multi_search(params = {}, &block) ⇒ Object
Execute an array of searches in bulk.
-
#multi_termvectors(body, params = {}) ⇒ Object
(also: #multi_term_vectors)
Multi termvectors API allows you to get multiple termvectors based on an index, type and id.
-
#percolate(body, params = {}) ⇒ Object
Matches a provided or existing document to the stored percolator queries.
-
#percolate_count(body, params = {}) ⇒ Object
Counts the queries that match a provided or existing document.
-
#scan(query, opts = {}) ⇒ Object
Create a new Scroller instance for scanning all results from a ‘query`.
-
#scroll(query, opts = {}) ⇒ Object
Create a new Scroller instance for scrolling all results from a ‘query`.
-
#search(query, params = nil) ⇒ Object
Allows you to execute a search query and get back search hits that match the query.
-
#search_shards(params = {}) ⇒ Object
The search shards API returns the indices and shards that a search request would be executed against.
-
#source(params = {}) ⇒ Object
Retrieve the document source from the index based on the ID and type.
-
#termvector(params = {}) ⇒ Object
(also: #termvectors, #term_vector, #term_vectors)
Returns information and statistics on terms in the fields of a particular document as stored in the index.
-
#update(script, params = {}) ⇒ Object
Update a document based on a script provided.
-
#update_params(params, overrides = nil) ⇒ Object
Internal: Add default parameters to the ‘params` Hash and then apply `overrides` to the params if any are given.
-
#validate(query, params = nil) ⇒ Object
Validate a potentially expensive query before running it.
Constructor Details
#initialize(client, name, type = nil) ⇒ Docs
Create a new document client for making API requests that pertain to the indexing and searching of documents in a search index.
client - Elastomer::Client used for HTTP requests to the server name - The name of the index as a String type - The document type as a String
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# File 'lib/elastomer/client/docs.rb', line 27 def initialize( client, name, type = nil ) @client = client @name = @client.assert_param_presence(name, "index name") unless name.nil? @type = @client.assert_param_presence(type, "document type") unless type.nil? end |
Instance Attribute Details
#client ⇒ Object (readonly)
Returns the value of attribute client.
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# File 'lib/elastomer/client/docs.rb', line 33 def client @client end |
#name ⇒ Object (readonly)
Returns the value of attribute name.
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# File 'lib/elastomer/client/docs.rb', line 33 def name @name end |
#type ⇒ Object (readonly)
Returns the value of attribute type.
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# File 'lib/elastomer/client/docs.rb', line 33 def type @type end |
Instance Method Details
#bulk(params = {}, &block) ⇒ Object
Perform bulk indexing and/or delete operations. The current index name and document type will be passed to the bulk API call as part of the request parameters.
params - Parameters Hash that will be passed to the bulk API call. block - Required block that is used to accumulate bulk API operations.
All the operations will be passed to the search cluster via a
single API request.
Yields a Bulk instance for building bulk API call bodies.
Examples
docs.bulk do |b|
b.index( document1 )
b.index( document2 )
b.delete( document3 )
...
end
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 431 def bulk( params = {}, &block ) raise "a block is required" if block.nil? params = {:index => self.name, :type => self.type}.merge params client.bulk params, &block end |
#count(query, params = nil) ⇒ Object
Executes a search query, but instead of returning results, returns the number of documents matched. This method supports both the “request body” query and the “URI request” query. When using the request body semantics, the query hash must contain the :query key. Otherwise we assume a URI request is being made.
query - The query body as a Hash params - Parameters Hash
Examples
# request body query
count({:match_all => {}}, :type => 'tweet')
# same thing but using the URI request method
count(:q => '*:*', :type => 'tweet')
See www.elastic.co/guide/en/elasticsearch/reference/current/search-count.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 242 def count( query, params = nil ) query, params = extract_params(query) if params.nil? response = client.get "/{index}{/type}/_count", update_params(params, :body => query, :action => "docs.count") response.body end |
#defaults ⇒ Object
Internal: Returns a Hash containing default parameters.
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# File 'lib/elastomer/client/docs.rb', line 588 def defaults { :index => name, :type => type } end |
#delete(params = {}) ⇒ Object
Delete a document from the index based on the document ID. The :id is provided as part of the params hash.
params - Parameters Hash
:id - the ID of the document to delete
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-delete.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 94 def delete( params = {} ) response = client.delete "/{index}/{type}/{id}", update_params(params, :action => "docs.delete") response.body end |
#delete_by_query(query, params = nil) ⇒ Object
Delete documents from one or more indices and one or more types based on a query. This method supports both the “request body” query and the “URI request” query. When using the request body semantics, the query hash must contain the :query key. Otherwise we assume a URI request is being made.
See Client#delete_by_query for more information.
Returns a Hash of statistics about the delete operations
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# File 'lib/elastomer/client/docs.rb', line 258 def delete_by_query(query, params = nil) query, params = extract_params(query) if params.nil? @client.delete_by_query(query, update_params(params)) end |
#exists?(params = {}) ⇒ Boolean Also known as: exist?
Check to see if a document exists. The :id is provided as part of the params hash.
params - Parameters Hash
:id - the ID of the document to check
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html#docs-get
Returns true if the document exists
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# File 'lib/elastomer/client/docs.rb', line 122 def exists?( params = {} ) response = client.head "/{index}/{type}/{id}", update_params(params, :action => "docs.exists") response.success? end |
#explain(query, params = nil) ⇒ Object
Compute a score explanation for a query and a specific document. This can give useful feedback about why a document matched or didn’t match a query. The document :id is provided as part of the params hash.
query - The query body as a Hash params - Parameters Hash
:id - the ID of the document
Examples
explain({:query => {:term => {"message" => "search"}}}, :id => 1)
explain(:q => "message:search", :id => 1)
See www.elastic.co/guide/en/elasticsearch/reference/current/search-explain.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 378 def explain( query, params = nil ) query, params = extract_params(query) if params.nil? response = client.get "/{index}/{type}/{id}/_explain", update_params(params, :body => query, :action => "docs.explain") response.body end |
#extract_params(query, params = nil) ⇒ Object
Internal: Allow params to be passed as the first argument to methods that take both an optional query hash and params.
query - query hash OR params hash params - params hash OR nil if no query
Returns an array of the query (possibly nil) and params Hash.
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# File 'lib/elastomer/client/docs.rb', line 599 def extract_params( query, params = nil ) if params.nil? if query.key? :query params = {} else params, query = query, nil end end [query, params] end |
#from_document(document) ⇒ Object
Internal: Given a ‘document` generate an options hash that will override parameters based on the content of the document. The document will be returned as the value of the :body key.
We only extract information from the document if it is given as a Hash. We do not parse JSON encoded Strings.
document - A document Hash or JSON encoded String.
Returns an options Hash extracted from the document.
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# File 'lib/elastomer/client/docs.rb', line 560 def from_document( document ) opts = {:body => document} if document.is_a? Hash SPECIAL_KEYS_HASH.each do |key, field| opts[key] = document.delete field if document.key? field opts[key] = document.delete field.to_sym if document.key? field.to_sym end end opts end |
#get(params = {}) ⇒ Object
Retrieve a document from the index based on its ID. The :id is provided as part of the params hash.
params - Parameters Hash
:id - the ID of the document to get
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html#docs-get
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 108 def get( params = {} ) response = client.get "/{index}/{type}/{id}", update_params(params, :action => "docs.get") response.body end |
#index(document, params = {}) ⇒ Object
Adds or updates a document in the index, making it searchable. If the document contains an ‘:_id` attribute then PUT semantics will be used to create (or update) a document with that ID. If no ID is provided then a new document will be created using POST semantics.
There are several other document attributes that control how Elasticsearch will index the document. They are listed below. Please refer to the Elasticsearch documentation for a full explanation of each and how it affects the indexing process.
:_id
:_type
:_version
:_version_type
:_op_type
:_routing
:_parent
:_timestamp
:_ttl
:_consistency
:_replication
:_refresh
If any of these attributes are present in the document they will be removed from the document before it is indexed. This means that the document will be modified by this method.
document - The document (as a Hash or JSON encoded String) to add to the index params - Parameters Hash
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 68 def index( document, params = {} ) overrides = from_document document params = update_params(params, overrides) params[:action] = "docs.index" params.delete(:id) if params[:id].nil? || params[:id].to_s =~ /\A\s*\z/ response = if params[:id] client.put "/{index}/{type}/{id}", params else client.post "/{index}/{type}", params end response.body end |
#more_like_this(query, params = nil) ⇒ Object
Deprecated - use the More Like This query: www.elastic.co/guide/en/elasticsearch/reference/2.3/query-dsl-mlt-query.html Search for documents similar to a specific document. The document :id is provided as part of the params hash. If the _all field is not enabled, :mlt_fields must be passed. A query cannot be present in the query body, but other fields like :size and :facets are allowed.
params - Parameters Hash
:id - the ID of the document
Examples
more_like_this(:mlt_fields => "title", :min_term_freq => 1, :type => "doc1", :id => 1)
# with query hash
more_like_this({:from => 5, :size => 10}, :mlt_fields => "title",
:min_term_freq => 1, :type => "doc1", :id => 1)
See www.elastic.co/guide/en/elasticsearch/reference/current/search-more-like-this.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 354 def more_like_this( query, params = nil ) query, params = extract_params(query) if params.nil? response = client.get "/{index}/{type}/{id}/_mlt", update_params(params, :body => query, :action => "docs.more_like_this") response.body end |
#multi_get(body, params = {}) ⇒ Object Also known as: mget
Allows you to get multiple documents based on an index, type, and id (and possibly routing).
body - The request body as a Hash or a JSON encoded String params - Parameters Hash
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-multi-get.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 150 def multi_get( body, params = {} ) overrides = from_document body overrides[:action] = "docs.multi_get" response = client.get "{/index}{/type}/_mget", update_params(params, overrides) response.body end |
#multi_percolate(params = {}, &block) ⇒ Object
Execute an array of percolate actions in bulk. Results are returned in an array in the order the actions were sent. The current index name and type will be passed to the API call as part of the request parameters.
See www.elastic.co/guide/en/elasticsearch/reference/current/search-percolate.html#_multi_percolate_api
params - Optional request parameters as a Hash block - Passed to a MultiPercolate instance which assembles the
percolate actions into a single request.
Examples
# block form
multi_percolate do |m|
m.percolate(:author => "pea53")
m.count(:author => "grantr")
...
end
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 542 def multi_percolate(params = {}, &block) params = defaults.merge params client.multi_percolate(params, &block) end |
#multi_search(params = {}, &block) ⇒ Object
Execute an array of searches in bulk. Results are returned in an array in the order the queries were sent. The current index name and document type will be passed to the multi_search API call as part of the request parameters.
params - Parameters Hash that will be passed to the API call. block - Required block that is used to accumulate searches.
All the operations will be passed to the search cluster
via a single API request.
Yields a MultiSearch instance for building multi_search API call bodies.
Examples
docs.multi_search do |m|
m.search({:query => {:match_all => {}}, :size => 0)
m.search({:query => {:field => {"foo" => "bar"}}})
...
end
See www.elastic.co/guide/en/elasticsearch/reference/current/search-multi-search.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 515 def multi_search( params = {}, &block ) raise "a block is required" if block.nil? params = {:index => self.name, :type => self.type}.merge params client.multi_search params, &block end |
#multi_termvectors(body, params = {}) ⇒ Object Also known as: multi_term_vectors
Multi termvectors API allows you to get multiple termvectors based on an index, type and id. The response includes a docs array with all the fetched termvectors, each element having the structure provided by the ‘termvector` API.
params - Parameters Hash
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-multi-termvectors.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 324 def multi_termvectors( body, params = {} ) response = client.get "{/index}{/type}/_mtermvectors", update_params(params, :body => body, :action => "docs.multi_termvectors") response.body end |
#percolate(body, params = {}) ⇒ Object
Matches a provided or existing document to the stored percolator queries. To match an existing document, pass ‘nil` as the body and include `:id` in the params.
Examples
index.percolator(1).create :query => { :match => { :author => "pea53" } }
docs.percolate :doc => { :author => "pea53" }
docs.percolate nil, :id => 3
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 275 def percolate(body, params = {}) response = client.get "/{index}/{type}{/id}/_percolate", update_params(params, :body => body, :action => "percolator.percolate") response.body end |
#percolate_count(body, params = {}) ⇒ Object
Counts the queries that match a provided or existing document. To count matches for an existing document, pass ‘nil` as the body and include `:id` in the params.
Examples
index.register_percolator_query 1, :query => { :match => { :author => "pea53" } }
docs.percolate_count :doc => { :author => "pea53" }
docs.percolate_count nil, :id => 3
Returns the count
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# File 'lib/elastomer/client/docs.rb', line 291 def percolate_count(body, params = {}) response = client.get "/{index}/{type}{/id}/_percolate/count", update_params(params, :body => body, :action => "percolator.percolate_count") response.body["total"] end |
#scan(query, opts = {}) ⇒ Object
Create a new Scroller instance for scanning all results from a ‘query`. The Scroller will be scoped to the current index and document type. The Scroller is configured to use `scan` semantics which are more efficient than a standard scroll query; the caveat is that the returned documents cannot be sorted.
query - The query to scan as a Hash or a JSON encoded String opts - Options Hash
:index - the name of the index to search
:type - the document type to search
:scroll - the keep alive time of the scrolling request (5 minutes by default)
:size - the number of documents per shard to fetch per scroll
Examples
scan = docs.scan('{"query":{"match_all":{}}}')
scan.each_document do |document|
document['_id']
document['_source']
end
Returns a new Scroller instance
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# File 'lib/elastomer/client/docs.rb', line 486 def scan( query, opts = {} ) opts = {:index => name, :type => type}.merge opts client.scan query, opts end |
#scroll(query, opts = {}) ⇒ Object
Create a new Scroller instance for scrolling all results from a ‘query`. The Scroller will be scoped to the current index and document type.
query - The query to scroll as a Hash or a JSON encoded String opts - Options Hash
:index - the name of the index to search
:type - the document type to search
:scroll - the keep alive time of the scrolling request (5 minutes by default)
:size - the number of documents per shard to fetch per scroll
Examples
scroll = index.scroll('{"query":{"match_all":{}},"sort":{"date":"desc"}}')
scroll.each_document do |document|
document['_id']
document['_source']
end
See www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html
Returns a new Scroller instance
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# File 'lib/elastomer/client/docs.rb', line 459 def scroll( query, opts = {} ) opts = {:index => name, :type => type}.merge opts client.scroll query, opts end |
#search(query, params = nil) ⇒ Object
Allows you to execute a search query and get back search hits that match the query. This method supports both the “request body” query and the “URI request” query. When using the request body semantics, the query hash must contain the :query key. Otherwise we assume a URI request is being made.
query - The query body as a Hash params - Parameters Hash
Examples
# request body query
search({:query => {:match_all => {}}}, :type => 'tweet')
# same thing but using the URI request method
search(:q => '*:*', :type => 'tweet')
See www.elastic.co/guide/en/elasticsearch/reference/current/search-search.html See www.elastic.co/guide/en/elasticsearch/reference/current/search-uri-request.html See www.elastic.co/guide/en/elasticsearch/reference/current/search-request-body.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 197 def search( query, params = nil ) query, params = extract_params(query) if params.nil? response = client.get "/{index}{/type}/_search", update_params(params, :body => query, :action => "docs.search") response.body end |
#search_shards(params = {}) ⇒ Object
The search shards API returns the indices and shards that a search request would be executed against. This can give useful feedback for working out issues or planning optimizations with routing and shard preferences.
params - Parameters Hash
:routing - routing values
:preference - which shard replicas to execute the search request on
:local - boolean value to use local cluster state
See www.elastic.co/guide/en/elasticsearch/reference/current/search-shards.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 217 def search_shards( params = {} ) response = client.get "/{index}{/type}/_search_shards", update_params(params, :action => "docs.search_shards") response.body end |
#source(params = {}) ⇒ Object
Retrieve the document source from the index based on the ID and type. The :id is provided as part of the params hash.
params - Parameters Hash
:id - the ID of the document
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html#_source
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 137 def source( params = {} ) response = client.get "/{index}/{type}/{id}/_source", update_params(params, :action => "docs.source") response.body end |
#termvector(params = {}) ⇒ Object Also known as: termvectors, term_vector, term_vectors
Returns information and statistics on terms in the fields of a particular document as stored in the index. The :id is provided as part of the params hash.
params - Parameters Hash
:id - the ID of the document to get
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-termvectors.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 306 def termvector( params = {} ) response = client.get "/{index}/{type}/{id}/_termvector", update_params(params, :action => "docs.termvector") response.body end |
#update(script, params = {}) ⇒ Object
Update a document based on a script provided.
script - The script (as a Hash) used to update the document in place params - Parameters Hash
See www.elastic.co/guide/en/elasticsearch/reference/current/docs-update.html
Returns the response body as a Hash
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# File 'lib/elastomer/client/docs.rb', line 167 def update( script, params = {} ) overrides = from_document script overrides[:action] = "docs.update" response = client.post "/{index}/{type}/{id}/_update", update_params(params, overrides) response.body end |
#update_params(params, overrides = nil) ⇒ Object
Internal: Add default parameters to the ‘params` Hash and then apply `overrides` to the params if any are given.
params - Parameters Hash overrides - Optional parameter overrides as a Hash
Returns a new params Hash.
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# File 'lib/elastomer/client/docs.rb', line 580 def update_params( params, overrides = nil ) h = defaults.update params h.update overrides unless overrides.nil? h[:routing] = h[:routing].join(",") if Array === h[:routing] h end |
#validate(query, params = nil) ⇒ Object
Validate a potentially expensive query before running it. The :explain parameter can be used to get detailed information about why a query failed.
query - The query body as a Hash params - Parameters Hash
Examples
# request body query
validate({:query => {:query_string => {:query => "*:*"}}}, :explain => true)
# same thing but using the URI query parameter
validate(:q => "post_date:foo", :explain => true)
See www.elastic.co/guide/en/elasticsearch/reference/current/search-validate.html
Returns the response body as a hash
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# File 'lib/elastomer/client/docs.rb', line 403 def validate( query, params = nil ) query, params = extract_params(query) if params.nil? response = client.get "/{index}{/type}/_validate/query", update_params(params, :body => query, :action => "docs.validate") response.body end |