Class: MarkLogic::Collection

Inherits:
Object
  • Object
show all
Defined in:
lib/marklogic/collection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, database) ⇒ Collection

Returns a new instance of Collection.



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# File 'lib/marklogic/collection.rb', line 10

def initialize(name, database)
  @collection = name
  @database = database
  @operators = %w{GT LT GE LE EQ NE ASC DESC}
end

Instance Attribute Details

#collection ⇒ Object Also known as: name

Returns the value of attribute collection.



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# File 'lib/marklogic/collection.rb', line 6

def collection
  @collection
end

#database ⇒ Object (readonly)

Returns the value of attribute database.



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# File 'lib/marklogic/collection.rb', line 7

def database
  @database
end

Instance Method Details

#build_query(name, operator, value, query_options = {}) ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 132

def build_query(name, operator, value, query_options = {})
  if database.has_range_index?(name) && (query_options.has_key?(:case_sensitive) == false || query_options[:case_sensitive] == true)
    index = database.range_index(name)
    type = index.scalar_type
    Queries::RangeQuery.new(name, operator, type, value, query_options)
  elsif operator != 'EQ'
    raise MissingIndexError.new("Missing index on #{name}")
  elsif value.nil?
    Queries::OrQuery.new([
      Queries::ValueQuery.new(name, value, query_options),
      Queries::NotQuery.new(Queries::ContainerQuery.new(name, Queries::AndQuery.new))
    ])
  elsif operator == 'EQ'
    Queries::ValueQuery.new(name, value, query_options)
  end
end

#count ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 16

def count
  MarkLogic::Cursor.new(self).count
end

#drop ⇒ Object

Raises:

  • (Exception) 


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# File 'lib/marklogic/collection.rb', line 104

def drop
  url = "/v1/search?collection=#{collection}"
  response =@database.connection.delete(url)
  raise Exception.new("Invalid response: #{response.code.to_i}, #{response.body}") unless [204].include? response.code.to_i
end

#find(query = nil, options = {}) ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 115

def find(query = nil, options = {})
  if query.class == Hash
    query = from_criteria(query)
  elsif query.nil?
    query = Queries::AndQuery.new()
  end
  options[:query] = query
  cursor = MarkLogic::Cursor.new(self, options)

  if block_given?
    yield cursor
    nil
  else
    cursor
  end
end

#find_one(query = nil, options = {}) ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 110

def find_one(query = nil, options = {})
  opts = options.merge(:per_page => 1)
  find(query, opts).next
end

#from_criteria(criteria) ⇒ Object

Builds a MarkLogic Query from Mongo Style Criteria

Examples:

Build a query from criteria


# Query on age == 3
collection.from_criteria({ 'age' => { '$eq' =>  3  } })

# Query on age < 3
collection.from_criteria({ 'age' => { '$lt' =>  3  } })

# Query on age <= 3
collection.from_criteria({ 'age' => { '$le' =>  3  } })

# Query on age > 3
collection.from_criteria({ 'age' => { '$gt' =>  3  } })

# Query on age >= 3
collection.from_criteria({ 'age' => { '$ge' =>  3  } })

# Query on age != 3
collection.from_criteria({ 'age' => { '$ne' =>  3  } })

Parameters:

  • criteria (Hash) —

    The Criteria to use when searching

Since:

  • 0.0.1



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# File 'lib/marklogic/collection.rb', line 174

def from_criteria(criteria)
  queries = []

  criteria.each do |k, v|
    name, operator, index_type, value = nil
    query_options = {}

    if (v.is_a?(Hash))
      name = k.to_s
      query_options.merge!(v.delete(:options) || {})

      sub_queries = []
      v.each do |kk, vv|
        operator = kk.to_s.gsub('$', '').upcase || "EQ"
        if @operators.include?(operator)
          value = vv
          value = value.to_s if value.is_a?(MarkLogic::ObjectId)
          sub_queries << build_query(name, operator, value, query_options)
        elsif value.is_a?(Hash)
          child_queries = value.map do |kk, vv|
            build_query(kk, vv, query_options)
          end
          sub_queries << Queries::ContainerQuery.new(name, Queries::AndQuery.new(child_queries))
        end
      end

      if sub_queries.length > 1
        queries << Queries::AndQuery.new(sub_queries)
      elsif sub_queries.length == 1
        queries << sub_queries[0]
      end
    else
      name = k.to_s
      value = v
      operator = "EQ"
      queries << build_query(name, operator, value, query_options)
    end
  end

  if queries.length > 1
    MarkLogic::Queries::AndQuery.new(*queries)
  elsif queries.length == 1
    queries[0]
  end
end

#inspect ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 224

def inspect
  as_nice_string = [
    " collection: #{collection.inspect}",
    " database: #{database.database_name.inspect}"
  ].join(",")
  "#<#{self.class}#{as_nice_string}>"
end

#load(id) ⇒ Object

Raises:

  • (Exception) 


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# File 'lib/marklogic/collection.rb', line 20

def load(id)
  url = "/v1/documents?uri=#{gen_uri(id)}&format=json"
  response = @database.connection.get(url)
  raise Exception.new("Invalid response: #{response.code.to_i}, #{response.body}") unless response.code.to_i == 200
  Oj.load(response.body)
end

#remove(query = nil, options = {}) ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 88

def remove(query = nil, options = {})
  if query.nil? || (query.is_a?(Hash) && query.empty?)
    drop
  else
    if query.class == Hash
      query = from_criteria(query)
    elsif query.nil?
      query = Queries::AndQuery.new()
    end

    xqy = %Q{cts:search(fn:collection("#{collection}"), #{query.to_xqy}, ("unfiltered")) / xdmp:node-delete(.)}
    response = @database.connection.run_query(xqy, "xquery")
    raise Exception.new("Invalid response: #{response.code.to_i}, #{response.body}") unless response.code.to_i == 200
  end
end

#save(doc) ⇒ Object Also known as: create, insert 



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# File 'lib/marklogic/collection.rb', line 27

def save(doc)
  if (doc.is_a?(Array))
    docs = {}
    doc.each do |d|
      docs[doc_uri(d)] = ::Oj.dump(d, mode: :compat)
    end
    body = build_multipart_body(docs)
    response = @database.connection.post_multipart("/v1/documents", body)
    raise Exception.new("Invalid response: #{response.code.to_i}, #{response.body}\n") unless response.code.to_i == 200
  else
    uri = doc_uri(doc)
    url = "/v1/documents?uri=#{uri}&format=json&collection=#{collection}"
    json = ::Oj.dump(doc, mode: :compat)
    response = @database.connection.put(url, json)
    raise Exception.new("Invalid response: #{response.code.to_i}, #{response.body}\n") unless [201, 204].include? response.code.to_i
    doc[:_id] || doc[:id] || doc['_id'] || doc['id']
  end
end

#to_s ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 220

def to_s
  %Q{collection: #{collection}}
end

#update(selector, document, opts = {}) ⇒ Object 



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# File 'lib/marklogic/collection.rb', line 46

def update(selector, document, opts={})
  find(selector).each do |doc|
    document.each do |key, value|
      case key
      when "$set"
        value.each do |kk, vv|
          doc[kk.to_s] = vv
        end
      when "$inc"
        value.each do |kk, vv|
          prev = doc[kk.to_s] || 0
          doc[kk.to_s] = prev + vv
        end
      when "$unset"
        value.keys.each do |kk|
          doc.delete(kk.to_s)
        end
      when "$push"
        value.each do |kk, vv|
          if doc.has_key?(kk.to_s)
            doc[kk.to_s].push(vv)
          else
            doc[kk.to_s] = [vv]
          end
        end
      when "$pushAll"
        value.each do |kk, vv|
          if doc.has_key?(kk.to_s)
            doc[kk.to_s] = doc[kk.to_s] + vv
          else
            doc[kk.to_s] = vv
          end
        end
      end
      save(doc)
    end
  end
end