Class: Spider::Model::Mappers::DocumentMapper

Inherits:
Spider::Model::Mapper show all
Includes:
Storage::Document
Defined in:
lib/spiderfw/model/mappers/document_mapper.rb

Instance Attribute Summary

Attributes inherited from Spider::Model::Mapper

#model, #storage, #type

Instance Method Summary collapse

Methods inherited from Spider::Model::Mapper

#after_delete, #after_save, #association_elements, #base_type, #basic_preprocess, #before_delete, #before_insert, #before_update, #bulk_update, #count, #delete, #delete_all!, #delete_element_associations, #execute_action, #find, #get_dependencies, #initialize, #insert, #load, #load_element, #load_element!, #map_back_value, #map_condition_value, #map_save_value, #map_value, #mapped?, #no_map, #normalize, #prepare_delete_condition, #queryset_siblings, #save, #save_all, #save_associations, #save_done, #save_element_associations, #save_integrated, #set_pks_condition, #sortable?, #storage_value_to_mapper, #update, write?

Constructor Details

This class inherits a constructor from Spider::Model::Mapper

Instance Method Details

#assign_pk(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 63

def assign_pk(obj)
    if obj.is_a?(QuerySet)
        obj.each{ |o| assign_pk(o) }
        return
    end
    obj.class.elements_array.select{ |el| el.type <= Spider::DataTypes::PK }.each do |el|
        obj.set(el, storage.generate_pk) unless obj.element_has_value?(el)
    end
end

#before_save(obj, mode) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 82

def before_save(obj, mode)
    super
    obj.class.elements_array.select{ |el| 
        el.attributes[:embedded] && !el.attributes[:extended_model] && obj.element_has_value?(el)
    }.each do |el|
        if el.multiple?
            obj.get(el).each do |o|
                o.mapper.before_save(o, mode)
            end
        else
            o = obj.get(el)
            next unless o
            o.mapper.before_save(o, mode)
        end
    end
end

#children_for_unit_of_work(obj, action) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 283

def children_for_unit_of_work(obj, action)
    obj.class.elements_array.select{ |el| 
        el.model? && obj.element_has_value?(el) && !el.attributes[:embedded]  && !el.attributes[:added_reverse]
    }.map do |el|
        obj.get(el)
    end
end

#determine_save_mode(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 296

def determine_save_mode(obj)
    if @model.extended_models && !@model.extended_models.empty?
        has_pks = true
        @model.primary_keys.each do |pk|
            if pk.integrated? && pk.integrated_from.attributes[:extended_model]
                return super unless pk.integrated_from.attributes[:embedded]
                unless obj.element_has_value?(pk)
                    has_pks = false
                    break
                end
            end
        end
        return has_pks ? :update : :insert
    end
end

#do_delete(condition, force) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 73

def do_delete(condition, force)
    query = Spider::Model::Query.new(condition)
    objs = self.find(query)
    return unless objs
    objs.each do |obj|
        storage.delete(obj.class.name, obj_to_hash(obj)) 
    end
end

#do_insert(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 59

def do_insert(obj)
    storage.insert(obj.class.name, obj_to_hash(obj)) 
end

#do_update(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 31

def do_update(obj)
    search_obj = obj
    emb = embedding(obj)
    path = nil
    search_obj, path = emb if emb
    condition = {}
    # search_obj.class.primary_keys.each do |pk|
    #     name = pk.name == :id ? '_id' : pk.name
    #     condition[name] = map_condition_value(pk.type, search_obj.get(pk))
    # end
    condition["_id"] = obj.keys_string
    set = {}
    document_elements(obj).select{ |el| obj.element_modified?(el) }.each do |el|
        name = el.name
        name = "#{path}.#{name}" if path
        if el.model?
            if el.attributes[:embedded]
                set[name] = obj_to_hash(obj.get(el), :embed_key => el.attributes[:embed_key])
            else
                set[name] = obj.get(el).keys_string
            end
        else
            set[name] = map_save_value(el.type, obj.get(el), :update)
        end
    end
    storage.update(search_obj.class.name, condition, set)
end

#document_element?(el, model = @model) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 103

def document_element?(el, model=@model)
    return true if el.attributes[:document_element]
    return false if el.multiple? && !el.attributes[:embedded]
    return false if el.attributes[:extended_model]
    return false if el.attributes[:added_reverse]
    return false if el.attributes[:computed_from]
    return false if el.integrated? && !el.integrated_from.attributes[:extended_model]
    return true

end

#document_elements(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 99

def document_elements(obj)
    obj.class.elements_array.select{ |el| document_element?(el, obj.class) }
end

#embed?(element, val = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 114

def embed?(element, val=nil)
    return false unless element.attributes[:embedded] && element.model.embeddable?
    return false if element.integrated?
    model = nil
    if val
        model = val.is_a?(QuerySet) ? val.model : val.class
    else
        model = element.model
    end
    return false unless model.embeddable?
    
    return true
end

#embedding(obj) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 10

def embedding(obj)
    embedder_el = obj.embedder
    return nil unless embedder_el
    first_embedder = obj.get(embedder_el)
    while first_embedder._subclass_object
        first_embedder = first_embedder._subclass_object
    end
    reverse_el = embedder_el.type.elements[embedder_el.reverse]
    path = "#{reverse_el.name}.#{obj.get(reverse_el.attributes[:embed_key])}"
    parent_obj = obj.get(embedder_el)
    # while parent_obj._subclass_object
    #     parent_obj = parent_obj._subclass_object
    # end
    parent_embedding = parent_obj.mapper.embedding(parent_obj)
    if parent_embedding
        first_embedder = parent_embedding[0]            
        path = "#{parent_embedding[0]}.#{path}"
    end
    [first_embedder, path]
end

#get_external_element(element, query, objects) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 291

def get_external_element(element, query, objects)
    return objects if element.attributes[:embedded] || element.attributes[:extended_model]
    super
end

#have_references?(element) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 184

def have_references?(element)
    element = @model.elements[element] unless element.is_a?(Element)
    document_element?(element)
end

#map(request, result, obj_or_model) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 198

def map(request, result, obj_or_model)
    # FIXME: ignores request for now
    model = obj_or_model.is_a?(Class) ? obj_or_model : obj_or_model.model
    if (!request || request == true)
        request = Request.new
        model.elements_array.each{ |el| request.request(el.name) }
    end
    subclass_type_el = model.elements_array.select{ |cel| cel.attributes[:subclass_type] }.first
    if subclass_type_el && subclass_type = result[subclass_type_el.name]
        model = const_get_full(subclass_type)
    end
    embedded = {}
    embedded_keys = model.elements_array.select{ |el| embed?(el) && !el.attributes[:extended_model] }.map{ |el| el.name }
    # debugger
    # embed?(:civilia_open_persona) if $DO_DEBUG
    embedded_keys.each do |k|
        embedded[k] = result.delete(k)
    end
    data = {}
    request.keys.each do |element_name|
        element = model.elements[element_name]
        result_value = nil
        next if !element || (element.integrated? && !element.integrated_from.embedded?) || !have_references?(element)
        next if embedded[element_name]
        if element.model?
            pks = {}
            keys_str = result[element_name]
            next if keys_str.blank?
            pks_array = element.model.split_keys_string(keys_str)
            element.model.primary_keys.each_with_index do |key, i|
                key_val = pks_array[i]
                pks[key.name] = map_back_value(key.type, key_val)
            end
#                    begin
            data[element_name] = Spider::Model.get(element.model, pks, true)
#                    rescue IdentityMapperException
                # null keys, nothing to set
#                    end
        elsif !element.model?
            data[element_name] = map_back_value(element.type, result[element_name])
        end
    end
    obj = Spider::Model.get(model, data, true)
    embedded.each do |k, v|
        if !v
            obj.set_loaded_value(k, nil) if request[k]
            next
        end
        next if v.is_a?(Array) && v.empty?
        el = obj.class.elements[k]
        if el.multiple?
            vals = []
            if el.attributes[:embed_key]
                vals = v.values
            else
                vals = v
            end
            qs = QuerySet.static(el.model)
            el_model = el.model
            el_mapper = el.model.mapper
            if el.junction? && !el.attributes[:keep_junction]
                el_model = el.type
                el_mapper = el.model.mapper
            end
            vals.each do |val|
                # FIXME: pass sub request
                sub_obj = el_mapper.map(true, val, el_model)#Spider::Model.get(el_model, val, true)
                qs << sub_obj
            end
            obj.set_loaded_value(k, qs)
        else
            # FIXME: pass sub request request[el.name]
            sub_obj = el.model.mapper.map(true, v, el.model)
            obj.set_loaded_value(k, sub_obj)
        end
        
    end
    obj
end

#obj_to_hash(obj, options = {}) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 129

def obj_to_hash(obj, options={})
    h = {}
    if obj.class == QuerySet
        res = obj.map{ |obj| obj_to_hash(obj) } 
        if options[:embed_key]
            h = {}
            res.each do |val|
                h[val[options[:embed_key].to_s]] = val
            end
            return h
        end
        return res
    end
    
    document_elements(obj).each do |el|
        next if el.primary_key?
        name = el.name
        next if options[:skip] && options[:skip].include?(el.name)
        val = obj.get(el)
        sub_options = {}
        hval = if el.model? && val
            if embed?(el, val)
                if el.multiple?
                    # if el.junction?
                    #     sub_options[:skip] = [el.reverse]
                    # end
                    if el.attributes[:embed_key]
                        el_h = {}
                        val.each do |row|
                            el_h[row.get(el.attributes[:embed_key])] = row.mapper.obj_to_hash(row, sub_options)
                        end
                        el_h
                    else
                        h_mapper = val[0] && val[0].mapper.respond_to?(:obj_to_hash) ? val[0].mapper : self
                        val.map{ |row| h_mapper.obj_to_hash(row, sub_options) }
                    end
                else
                    sub_mapper = val.mapper.respond_to?(:obj_to_hash) ? val.mapper : self
                    sub_mapper.obj_to_hash(val, sub_options)
                end
            else
                val.keys_string
            end
        else
            map_save_value(el.type, val)
        end
        h[name] = hval
    end
    
    assign_pk(obj)
    h["_id"] = obj.keys_string
    
    h
end

#save_extended_models(obj, mode) ⇒ Object 



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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 279

def save_extended_models(obj, mode)
    return
end

#someone_have_references?(element) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/model/mappers/document_mapper.rb', line 189

def someone_have_references?(element)
    element = @model.elements[element] unless element.is_a?(Element)
    if (element.integrated?)
        return element.model.someone_have_references?(element.attributes[:integrated_from_element])
    end
    return have_references?(element)
end