module RestChange

Public Instance Methods

alter_property(o_class, property:, attribute: "DEFAULT", alteration: logger.progname = 'RestChange click to toggle source

Used to add restriction or other properties to the Property of a Class. See orientdb.com/docs/2.1/SQL-Alter-Property.html

# File lib/rest/change.rb, line 116
def alter_property o_class, property:, attribute: "DEFAULT", alteration:  # :nodoc: because untested
  logger.progname = 'RestChange#AlterProperty'
  begin
    attribute.to_s! unless attribute.is_a? String
    attribute.capitalize_first_letter
    case attribute
    when "LINKEDCLASS", "LINKEDTYPE", "NAME", "REGEX", "TYPE", "REGEX", "COLLATE", "CUSTOM"
      unless alteration.is_a? String
        logger.error{"#{alteration} should be a String."}
        return 0
      end
    when "MIN", "MAX"
      unless alteration.is_a? Integer
        logger.error{"#{alteration} should be an Integer."}
        return 0
      end
    when "MANDATORY", "NOTNULL", "READONLY"
      unless alteration.is_a? TrueClass or alteration.is_a? FalseClass
        logger.error{"#{alteration} should be an Integer."}
        return 0
      end
    when "DEFAULT"
    else
      logger.error{"Wrong attribute."}
      return 0
    end

                      execute { "ALTER PROPERTY #{class_name(o_class)}.#{property} #{attribute} #{alteration}"}
  rescue Exception => e
    logger.error{e.message}
  end
end
change_database(name) click to toggle source

Changes the working-database to {name}

# File lib/rest/change.rb, line 7
def change_database name
  @classes = []
  @database = name
  ActiveOrient.database = name
end
update(record, attributes , version=0) click to toggle source

Convient update of the dataset by calling sql-patch

The argument record can be specified as ActiveOrient::Model-instance or as rid-string( #0:0 )

called from ModelRecord#update

if the update was successful, the updated data are returned as Hash.

First the cached object is retrieved Its modified by the parameters provided and then patched

better would be: update the cached object and patch that.

# File lib/rest/change.rb, line 31
def update record, attributes , version=0   
  r = ActiveOrient::Model.autoload_object record.rid 
  return(false) unless r.is_a?(ActiveOrient::Model)
              raise "Cannot update the record, version-information missing. please reload ! " if version.nil?
  version = r.version if version.zero?
  result = patch_record(r.rid) do
    attributes.merge({'@version' => version, '@class' => r.class.ref_name })
  end
  # returns a new instance of ActiveOrient::Model and updates any reference on rid
  # It's assumed, that the version
  # if the patch is not successfull no string is returned and thus no record is fetched
  # JSON.parse(result) if result.is_a?(String)
  if result.is_a?(String)
     JSON.parse(result) # return value
  else
    logger.error{ "REST::Update was not successfull" }
     nil   # returnvalue
  end
end
update_records(o_class, set:{}) click to toggle source

Example:

ORD.update_documents classname, set: {:symbol => 'TWR'}, where: {con_id: 340}

Replaces the symbol to TWR in each record where the con_id is 340

Both set and where take multiple attributes

Returns the JSON-Response.

# todo: clear the rid-cache

# File lib/rest/change.rb, line 65
def update_records o_class, set:{}, where: {}, remove: nil
              logger.progname = 'RestChange#UpdateRecords'
              count =  execute do 
                      if set.present?
                              "UPDATE #{classname(o_class)} SET #{generate_sql_list(set)} #{compose_where(where)}"
                      elsif remove.present?
                              "UPDATE #{classname(o_class)} remove #{remove} #{compose_where(where)}"
                      end 
              end &.first
      rescue Exception => e
              logger.error{e.message}
              nil


      end