Class: CrailsDestroyGenerator
Class Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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#_append, _use_by_files, _use_by_models, #get_classname, #get_pluralized_name, #get_singular_name, #get_type, #get_value, #has_many, #has_one, #id_type, #indent, is_file_based?, #make_block, #null_id, #order_by, prepare, #property, #ptr_type, #reset, #resource_name, #should_generate_for, #should_generate_from_manifest, #should_skip_on_client?, sourcefile_to_destfile, #unindent, use, #visibility
Class Attribute Details
.destroy_data ⇒ Object
Returns the value of attribute destroy_data.
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 39
def destroy_data
@destroy_data
end
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Class Method Details
.extension ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 47
def extension ; ".destroy.cpp" ; end
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.make_file(filename, data) ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 49
def make_file filename, data
include = "lib/" + filename[0...-2] + "hpp"
source = "#include \"#{include}\"\n"
source += "#include \"lib/#{filename[0...-2]}queries.hpp\"\n"
source += "#include <crails/odb/helpers.hpp>\n"
source += "#include <crails/odb/any.hpp>\n"
source += "#include <#{GeneratorBase.odb_connection[:include]}>\n"
source += "#include \"lib/odb/application-odb.hxx\"\n"
source += (collect_includes_for filename).join "\n"
source += "\n" + (data[:bodies].join "\n")
end
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.my_prepare ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 41
def my_prepare
destroy_preparator = CrailsDestroyPreparator.new
destroy_preparator.prepare
@destroy_data = destroy_preparator.data
end
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Instance Method Details
#generate_for(object) ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 62
def generate_for object
reset
CrailsDestroyGenerator.my_prepare if CrailsDestroyGenerator.destroy_data.nil?
@finalclass = object[:classname]
@klassname = get_classname(object)
_append "void #{@klassname}::on_dependent_destroy(#{id_type} self_id)"
_append "{"
unless object[:classname].nil?
@indent += 1
depended_by = CrailsDestroyGenerator.destroy_data[object[:classname]]
if depended_by.class == Array
_append "#{GeneratorBase.odb_connection[:object]} database;"
depended_by.each do |relation|
_append "// #{relation[:class]}"
_append "{"
@indent += 1
if relation[:type] == "has_one"
one_to_many relation
elsif relation[:type] == "has_many"
many_to_many relation
end
@indent -= 1
_append "}\n"
end
end
@indent -= 1
end
_append "}"
@src
end
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#many_to_many(relation) ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 119
def many_to_many relation
if relation[:options][:joined] != false
outer_name = (relation[:field].split(/-|_|\s/).each do |i| i.capitalize! end).join
view_klass = "#{relation[:class].split("::").join}By#{outer_name}"
klassname = @klassname.split("::").last
singular_name = get_singular_name relation[:field]
_append "typedef odb::query<#{view_klass}> Query;"
_append "odb::result<#{view_klass}> models;"
_append "Query query;\n"
_append "query = Query::#{klassname}::id == self_id;"
_append "database.find<#{view_klass}>(models, query);"
_append "for (auto model : odb::to_vector<#{relation[:class]}, #{view_klass}>(models))"
_append "{"
@indent += 1
if relation[:options][:dependent] == :destroy
_append "if (model.get_#{relation[:field]}().size() == 1)"
_append " database.destroy(model);"
_append "else"
_append "{"
_append " model.remove_#{singular_name}(*static_cast<#{@finalclass}*>(this));"
_append " database.save(model);"
_append "}"
else relation[:options][:dependent] == :unlink
_append "model.remove_#{singular_name}(*static_cast<#{@finalclass}*>(this));"
_append "database.save(model);"
end
@indent -= 1
_append "}"
else
_append "typedef odb::query<#{relation[:class]}> Query;"
_append "std::vector<#{id_type}> ids = { self_id };"
_append "odb::result<#{relation[:class]}> models;"
_append "Query query;\n"
id_field = "#{get_singular_name relation[:field]}_ids"
_append "query = Query::#{id_field} + \"@>\" + Crails::Odb::array_to_string(ids, \"int\");"
_append "database.find<#{relation[:class]}>(models, query);"
_append "for (auto model : odb::to_vector<#{relation[:class]}>(models))"
_append "{"
@indent += 1
if relation[:options][:dependent] == :destroy
_append "auto id_list = model.get_#{id_field}();\n"
_append "if (id_list.size() == 1)"
_append " database.destroy(model);"
_append "else"
_append "{"
_append " id_list.erase(std::find(id_list.begin(), id_list.end(), self_id));"
_append " model.set_#{id_field}(id_list);"
_append " database.save(model);"
_append "}"
elsif relation[:options][:dependent] == :unlink
_append "auto id_list = model.get_#{id_field}();\n"
_append "id_list.erase(std::find(id_list.begin(), id_list.end(), self_id));"
_append "model.set_#{id_field}(id_list);"
_append "database.save(model);"
end
@indent -= 1
_append "}"
end
end
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#one_to_many(relation) ⇒ Object
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# File 'lib/metarecord/generators/crails/destroy_generator.rb', line 93
def one_to_many relation
_append "typedef odb::query<::#{relation[:class]}> Query;"
_append "odb::result<::#{relation[:class]}> models;"
_append "Query query;\n"
if relation[:options][:joined] != false
_append "query = Query::#{relation[:field]}->id == self_id;"
else
_append "query = Query::#{relation[:field]}_id == self_id;"
end
_append "database.find<::#{relation[:class]}>(models, query);"
_append "for (auto model : odb::to_vector<::#{relation[:class]}>(models))"
if relation[:options][:dependent] == :destroy
_append " database.destroy(model);"
elsif relation[:options][:dependent] == :unlink
_append "{"
if relation[:options][:joined] != false
_append " model.set_#{relation[:field]}(nullptr);"
else
_append " model.set_#{relation[:field]}_id(0);"
end
_append " database.save(model);"
_append "}"
end
end
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