Class: FeideeUtils::Record

Inherits:
Object
  • Object
show all
Extended by:
Accessors::ClassMethods, Namespaced::ClassMethods, Persistent::ClassMethods
Includes:
Accessors, Utils
Defined in:
lib/feidee_utils/record.rb,
lib/feidee_utils/record/utils.rb,
lib/feidee_utils/record/accessors.rb,
lib/feidee_utils/record/namespaced.rb,
lib/feidee_utils/record/persistent.rb,
lib/feidee_utils/record/modified_record.rb

Overview

The implementation here is wired. The goal is to create a class hierachy similar to ActiveRecord, where every table is represented by a subclass of ActiveRecord::Base. Class methods, attribute accessors and almost all other functionalities are provided by ActiveRecord::Base. For example, Base.all(), Base.find_by_id() are tied to a specific table in a specific database. The problem we are solving here is not the same as ActiveRecord. In ActiveRecord, the databases are static, i.e. they won’t be changed at runtime. Meanwhile, in our case, new databases can be created at runtime, when a new KBF backup file is uploaded. Furthermore, multiple instances of different databases can co-exist at the same time. To provide the same syntax as ActiveRecord, a standalone “Base” class has to be created for each database. In our implementation, when a new database is created, a subclass of Record is created in a new namepsace. For each subclass of Record, a new subclass is copied to the new namespace, with it’s database method overloaded.

Direct Known Subclasses

Account, AccountGroup, Category, Transaction

Defined Under Namespace

Modules: Accessors, Namespaced, Persistent, Utils Classes: ModifiedRecord

Instance Attribute Summary collapse

Attributes included from Namespaced::ClassMethods

#child_classes

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Accessors::ClassMethods

define_accessors

Methods included from Namespaced::ClassMethods

collect_subclass, generate_namespaced_record_classes

Methods included from Persistent::ClassMethods

all, find, find_by_id, genereate_names

Methods included from Accessors

#last_update_time, #poid

Constructor Details

#initialize(columns, types, raw_row) ⇒ Record

Returns a new instance of Record.



25
26
27
28
29
30
 
# File 'lib/feidee_utils/record.rb', line 25

def initialize(columns, types, raw_row)
  @field = Hash[ columns.zip(raw_row) ]
  @field_type = Hash[ columns.zip(types) ]

  validate_integrity
end

Instance Attribute Details

#field ⇒ Object (readonly)

Returns the value of attribute field.



22
23
24
 
# File 'lib/feidee_utils/record.rb', line 22

def field
  @field
end

#field_type ⇒ Object (readonly)

Returns the value of attribute field_type.



22
23
24
 
# File 'lib/feidee_utils/record.rb', line 22

def field_type
  @field_type
end

Class Method Details

.validate_integrity_globally ⇒ Object 



36
37
38
 
# File 'lib/feidee_utils/record.rb', line 36

def self.validate_integrity_globally
  # Do nothing.
end

Instance Method Details

#validate_integrity ⇒ Object 



32
33
34
 
# File 'lib/feidee_utils/record.rb', line 32

def validate_integrity
  # Do nothing.
end