Class: Solr::Request::Standard

Inherits:
Select show all
Defined in:
lib/solr/request/standard.rb

Overview

The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Direct Known Subclasses

Dismax

Constant Summary collapse

VALID_PARAMS = 
[:query, :sort, :default_field, :operator, :start, :rows, :shards,
:filter_queries, :field_list, :debug_query, :explain_other, :facets, :highlighting, :mlt]

Instance Attribute Summary

Attributes inherited from Select

#query_type

Instance Method Summary collapse

Methods inherited from Select

#content_type, #handler, #response_format, #to_s

Methods inherited from Base

#content_type, #handler, #response_format

Constructor Details

#initialize(params) ⇒ Standard

Returns a new instance of Standard.



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# File 'lib/solr/request/standard.rb', line 18

def initialize(params)
  super('standard')
  
  raise "Invalid parameters: #{(params.keys - VALID_PARAMS).join(',')}" unless 
    (params.keys - VALID_PARAMS).empty?
  
  raise ":query parameter required" unless params[:query]
  
  @params = params.dup
  
  # Validate operator
  if params[:operator]
    raise "Only :and/:or operators allowed" unless 
      [:and, :or].include?(params[:operator])
      
    @params[:operator] = params[:operator].to_s.upcase
  end

  # Validate start, rows can be transformed to ints
  @params[:start] = params[:start].to_i if params[:start]
  @params[:rows] = params[:rows].to_i if params[:rows]
  
  @params[:field_list] ||= ["*","score"]
  
  @params[:shards] ||= []
end

Instance Method Details

#to_hash ⇒ Object 



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# File 'lib/solr/request/standard.rb', line 45

def to_hash
  hash = {}
  
  # standard request param processing
  sort = @params[:sort].collect do |sort|
    key = sort.keys[0]
    "#{key.to_s} #{sort[key] == :descending ? 'desc' : 'asc'}"
  end.join(',') if @params[:sort]
  hash[:q] = sort ? "#{@params[:query]};#{sort}" : @params[:query]
  hash["q.op"] = @params[:operator]
  hash[:df] = @params[:default_field]

  # common parameter processing
  hash[:start] = @params[:start]
  hash[:rows] = @params[:rows]
  hash[:fq] = @params[:filter_queries]
  hash[:fl] = @params[:field_list].join(',')
  hash[:debugQuery] = @params[:debug_query]
  hash[:explainOther] = @params[:explain_other]
  hash[:shards] = @params[:shards].join(',') unless @params[:shards].empty?
  
  # facet parameter processing
  if @params[:facets]
    # TODO need validation of all that is under the :facets Hash too
    hash[:facet] = true
    hash["facet.field"] = []
    hash["facet.query"] = @params[:facets][:queries]
    hash["facet.sort"] = (@params[:facets][:sort] == :count) if @params[:facets][:sort]
    hash["facet.limit"] = @params[:facets][:limit]
    hash["facet.missing"] = @params[:facets][:missing]
    hash["facet.mincount"] = @params[:facets][:mincount]
    hash["facet.prefix"] = @params[:facets][:prefix]
    hash["facet.offset"] = @params[:facets][:offset]
    if @params[:facets][:fields]  # facet fields are optional (could be facet.query only)
      @params[:facets][:fields].each do |f|
        if f.kind_of? Hash
          key = f.keys[0]
          value = f[key]
          hash["facet.field"] << key
          hash["f.#{key}.facet.sort"] = (value[:sort] == :count) if value[:sort]
          hash["f.#{key}.facet.limit"] = value[:limit]
          hash["f.#{key}.facet.missing"] = value[:missing]
          hash["f.#{key}.facet.mincount"] = value[:mincount]
          hash["f.#{key}.facet.prefix"] = value[:prefix]
          hash["f.#{key}.facet.offset"] = value[:offset]
        else
          hash["facet.field"] << f
        end
      end
    end
  end
  
  # highlighting parameter processing - http://wiki.apache.org/solr/HighlightingParameters
  #TODO need to add per-field overriding to snippets, fragsize, requiredFieldMatch, formatting, and simple.pre/post
  if @params[:highlighting]
    hash[:hl] = true
    hash["hl.fl"] = @params[:highlighting][:field_list].join(',') if @params[:highlighting][:field_list]
    hash["hl.snippets"] = @params[:highlighting][:max_snippets]
    hash["hl.requireFieldMatch"] = @params[:highlighting][:require_field_match]
    hash["hl.simple.pre"] = @params[:highlighting][:prefix]
    hash["hl.simple.post"] = @params[:highlighting][:suffix]
    hash["hl.fragsize"] = @params[:highlighting][:fragment_size]
    if @params[:highlighting][:alternate_fields]
      @params[:highlighting][:alternate_fields].each do |k,v|
        hash["f.#{k}.hl.alternateField"] = v
      end
    end
    if @params[:highlighting][:max_alternate_field_length]
      @params[:highlighting][:max_alternate_field_length].each do |k,v|
        hash["f.#{k}.hl.maxAlternateFieldLength"] = v
      end
    end
  end
  
  if @params[:mlt]
    hash[:mlt] = true
    hash["mlt.count"] = @params[:mlt][:count]
    hash["mlt.fl"] = @params[:mlt][:field_list].join(',')
    hash["mlt.mintf"] = @params[:mlt][:min_term_freq]
    hash["mlt.mindf"] = @params[:mlt][:min_doc_freq]
    hash["mlt.minwl"] = @params[:mlt][:min_word_length]
    hash["mlt.maxwl"] = @params[:mlt][:max_word_length]
    hash["mlt.maxqt"] = @params[:mlt][:max_query_terms]
    hash["mlt.maxntp"] = @params[:mlt][:max_tokens_parsed]
    hash["mlt.boost"] = @params[:mlt][:boost]
  end
  
  hash.merge(super.to_hash)
end