109 lines
3.5 KiB
Ruby
109 lines
3.5 KiB
Ruby
module Elasticsearch
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module Model
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# Contains functionality related to searching.
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#
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module Searching
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# Wraps a search request definition
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#
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class SearchRequest
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attr_reader :klass, :definition, :options
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# @param klass [Class] The class of the model
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# @param query_or_payload [String,Hash,Object] The search request definition
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# (string, JSON, Hash, or object responding to `to_hash`)
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# @param options [Hash] Optional parameters to be passed to the Elasticsearch client
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#
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def initialize(klass, query_or_payload, options={})
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@klass = klass
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@options = options
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__index_name = options[:index] || klass.index_name
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__document_type = options[:type] || klass.document_type
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case
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# search query: ...
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when query_or_payload.respond_to?(:to_hash)
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body = query_or_payload.to_hash
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# search '{ "query" : ... }'
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when query_or_payload.is_a?(String) && query_or_payload =~ /^\s*{/
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body = query_or_payload
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# search '...'
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else
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q = query_or_payload
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end
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if body
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@definition = { index: __index_name, type: __document_type, body: body }.update options
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else
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@definition = { index: __index_name, type: __document_type, q: q }.update options
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end
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end
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# Performs the request and returns the response from client
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#
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# @return [Hash] The response from Elasticsearch
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#
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def execute!
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klass.client.search(@definition)
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end
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end
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module ClassMethods
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# Provides a `search` method for the model to easily search within an index/type
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# corresponding to the model settings.
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#
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# @param query_or_payload [String,Hash,Object] The search request definition
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# (string, JSON, Hash, or object responding to `to_hash`)
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# @param options [Hash] Optional parameters to be passed to the Elasticsearch client
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#
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# @return [Elasticsearch::Model::Response::Response]
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#
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# @example Simple search in `Article`
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#
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# Article.search 'foo'
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#
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# @example Search using a search definition as a Hash
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#
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# response = Article.search \
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# query: {
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# match: {
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# title: 'foo'
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# }
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# },
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# highlight: {
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# fields: {
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# title: {}
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# }
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# },
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# size: 50
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#
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# response.results.first.title
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# # => "Foo"
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#
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# response.results.first.highlight.title
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# # => ["<em>Foo</em>"]
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#
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# response.records.first.title
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# # Article Load (0.2ms) SELECT "articles".* FROM "articles" WHERE "articles"."id" IN (1, 3)
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# # => "Foo"
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#
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# @example Search using a search definition as a JSON string
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#
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# Article.search '{"query" : { "match_all" : {} }}'
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#
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def search(query_or_payload, options={})
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search = SearchRequest.new(self, query_or_payload, options)
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Response::Response.new(self, search)
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end
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end
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end
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end
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end
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