Class: Lafcadio::Query::Condition

Inherits:
Object
  • Object
show all
Defined in:
lib/lafcadio/query.rb

Overview

:nodoc:

Direct Known Subclasses

Compare, CompoundCondition, Equals, In, Like, Not

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fieldName, searchTerm, domain_class) ⇒ Condition

Returns a new instance of Condition.



358
359
360
361
362
363
364
365
366
367
 
# File 'lib/lafcadio/query.rb', line 358

def initialize(fieldName, searchTerm, domain_class)
	@fieldName, @searchTerm, @domain_class =
			fieldName, searchTerm, domain_class
	unless @searchTerm.is_a?( self.class.search_term_type )
		raise "Incorrect searchTerm type #{ searchTerm.class }"
	end
	if @domain_class and !( @domain_class < DomainObject )
		raise "Incorrect object type #{ @domain_class.to_s }"
	end
end

Instance Attribute Details

#domain_class ⇒ Object (readonly)

Returns the value of attribute domain_class.



356
357
358
 
# File 'lib/lafcadio/query.rb', line 356

def domain_class
  @domain_class
end

Class Method Details

.search_term_type ⇒ Object 



352
353
354
 
# File 'lib/lafcadio/query.rb', line 352

def Condition.search_term_type
	Object
end

Instance Method Details

#&(other_cond) ⇒ Object 



371
 
# File 'lib/lafcadio/query.rb', line 371

def &( other_cond ); Query.And( self, other_cond ); end

#db_field_name ⇒ Object 



380
 
# File 'lib/lafcadio/query.rb', line 380

def db_field_name; field.db_column; end

#eql?(other_cond) ⇒ Boolean

Returns:

  • (Boolean) 


382
383
384
 
# File 'lib/lafcadio/query.rb', line 382

def eql?( other_cond )
	other_cond.is_a?( Condition ) and other_cond.to_sql == to_sql
end

#field ⇒ Object 



386
387
388
389
390
391
392
393
394
 
# File 'lib/lafcadio/query.rb', line 386

def field
	f = @domain_class.field @fieldName.to_s
	f or raise(
		MissingError,
		"Couldn't find field \"#{ @fieldName }\" in " + @domain_class.name +
				" domain class",
		caller
	)
end

#implies?(other_condition) ⇒ Boolean

Returns:

  • (Boolean) 


373
374
375
376
377
378
 
# File 'lib/lafcadio/query.rb', line 373

def implies?( other_condition )
	self.eql?( other_condition ) or (
		other_condition.respond_to?( :implied_by? ) and 
				other_condition.implied_by?( self )
	)
end

#not ⇒ Object 



396
 
# File 'lib/lafcadio/query.rb', line 396

def not; Query::Not.new( self ); end

#one_pk_id? ⇒ Boolean

Returns:

  • (Boolean) 


398
 
# File 'lib/lafcadio/query.rb', line 398

def one_pk_id?; self.is_a?( Equals ) and primary_key_field?; end

#primary_key_field? ⇒ Boolean

Returns:

  • (Boolean) 


400
 
# File 'lib/lafcadio/query.rb', line 400

def primary_key_field?; 'pk_id' == @fieldName; end

#query ⇒ Object 



402
 
# File 'lib/lafcadio/query.rb', line 402

def query; Query.new( @domain_class, :condition => self ); end

#to_condition ⇒ Object 



404
 
# File 'lib/lafcadio/query.rb', line 404

def to_condition; self; end

#|(other_cond) ⇒ Object 



369
 
# File 'lib/lafcadio/query.rb', line 369

def |( other_cond ); Query.Or( self, other_cond ); end