Module: Lore::Table_Updater
- Defined in:
- lib/lore/table_updater.rb
Overview
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Class Method Summary collapse
- .atomic_update_query(table_name, attributes, primary_key_values, value_keys, explicit_fields) ⇒ Object
-
.block_update(accessor, &block) ⇒ Object
def.
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.perform_update(accessor, accessor_instance) ⇒ Object
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.update_query(table_name, is_a_hierarchy, attributes, primary_key_values, value_keys, explicit_fields, query_string = '') ⇒ Object
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Class Method Details
.atomic_update_query(table_name, attributes, primary_key_values, value_keys, explicit_fields) ⇒ Object
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# File 'lib/lore/table_updater.rb', line 11 def self.atomic_update_query(table_name, attributes, primary_key_values, value_keys, explicit_fields) @logger.debug('EXPLICIT FIELDS: ' << explicit_fields.inspect) query_string = "\n" query_string += 'UPDATE '+table_name+' SET ' set_string = String.new key_counter = 0 attributes.each { |attribute_name| internal_attribute_name = attribute_name[0..24] value = value_keys[internal_attribute_name].to_s if value == '' then value = value_keys[table_name+'.'+internal_attribute_name].to_s end # attrib = Lore.resolve_passed_value(value_keys, table_name, attribute_name) # value = attrib[:value] # internal_attribute_name = attrib[:field] # only include attribute to update query if # this attribute is not marked for explicit updating or # marked as explicit but non-empty: if( !(explicit_fields && explicit_fields.include?(internal_attribute_name) && value.empty?) && !(primary_key_values[attribute_name] && value.empty?) ) if key_counter > 0 set_string += ', ' end # if set_string += attribute_name + '=\'' + value.to_s + '\' ' key_counter = 1 end # if } query_string += set_string query_string += 'WHERE ' field_counter=0 primary_key_values.each_pair { |field, value| query_string += field + '=\'' + value.to_s + '\' ' if field_counter < primary_key_values.keys.length-1 query_string += 'AND ' end field_counter += 1 } query_string += ';' query_string end |
.block_update(accessor, &block) ⇒ Object
def
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# File 'lib/lore/table_updater.rb', line 72 def self.block_update(accessor, &block) query_string = 'UPDATE '+accessor.get_table_name if block_given? then yield_obj = Lore::Clause_Parser.new(accessor.table_name) clause = yield *yield_obj end query_string += clause.set_part query_string += clause.where_part Lore::Context.enter(accessor.get_context) unless accessor.get_context.nil? begin Lore::Connection.perform(query_string) ensure Lore::Context.leave unless accessor.get_context.nil? end end |
.perform_update(accessor, accessor_instance) ⇒ Object
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# File 'lib/lore/table_updater.rb', line 133 def self.perform_update(accessor, accessor_instance) query_string = update_query(accessor.get_table_name, accessor.get_is_a, accessor.get_attributes, accessor_instance.get_primary_key_values, accessor_instance.get_attribute_values, accessor.get_explicit) Context.enter(accessor.get_context) unless accessor.get_context.nil? begin Lore::Connection.perform("BEGIN;\n#{query_string}\nCOMMIT;") rescue ::Exception => excep Lore::Connection.perform("ROLLBACK;") ensure Context.leave unless accessor.get_context.nil? end accessor.flush_entity_cache() end |
.update_query(table_name, is_a_hierarchy, attributes, primary_key_values, value_keys, explicit_fields, query_string = '') ⇒ Object
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# File 'lib/lore/table_updater.rb', line 96 def self.update_query(table_name, is_a_hierarchy, attributes, primary_key_values, value_keys, explicit_fields, query_string='') is_a_hierarchy.each_pair { |table, base_tables| # pass base tables first, recursively, as IS_A-based creation has # to be done bottom-up: query_string += update_query(table, base_tables, attributes, primary_key_values, value_keys, explicit_fields ).to_s } # finally, add query string for this table: query_string += atomic_update_query(table_name, attributes[table_name], primary_key_values[table_name], value_keys[table_name], # value_keys[table_name], explicit_fields[table_name] ).to_s query_string end |