Class: Lafcadio::Query::Condition

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

Overview

:nodoc:

Direct Known Subclasses

Compare, CompoundCondition, Equals, In, Like, Link, Not

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fieldName, searchTerm, objectType) ⇒ Condition

Returns a new instance of Condition.



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# File 'lib/lafcadio/query/Condition.rb', line 12

def initialize(fieldName, searchTerm, objectType)
	require 'lafcadio/domain/DomainObject'

	@fieldName = fieldName
	@searchTerm = searchTerm
	unless @searchTerm.class <= self.class.searchTermType
		raise "Incorrect searchTerm type #{ searchTerm.class }"
	end
	@objectType = objectType
	if @objectType
		unless @objectType <= DomainObject
			raise "Incorrect object type #{ @objectType.to_s }"
		end
	end
end

Instance Attribute Details

#objectType ⇒ Object (readonly)

Returns the value of attribute objectType.



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# File 'lib/lafcadio/query/Condition.rb', line 10

def objectType
  @objectType
end

Class Method Details

.searchTermType ⇒ Object 



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# File 'lib/lafcadio/query/Condition.rb', line 6

def Condition.searchTermType
	Object
end

Instance Method Details

#dbFieldName ⇒ Object 



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# File 'lib/lafcadio/query/Condition.rb', line 32

def dbFieldName
	if primaryKeyField?
		db_table = @objectType.tableName
		db_field_name = @objectType.sqlPrimaryKeyName
		"#{ db_table }.#{ db_field_name }"
	else
		getField.db_table_and_field_name
	end
end

#getField ⇒ Object 



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# File 'lib/lafcadio/query/Condition.rb', line 42

def getField
	anObjectType = @objectType
	field = nil
	while (anObjectType < DomainObject || anObjectType < DomainObject) &&
				!field
		field = anObjectType.getClassField( @fieldName ) ||
		        anObjectType.getClassFieldByDbFieldName( @fieldName )
		anObjectType = anObjectType.superclass
	end
	if field
		field
	else
		errStr = "Couldn't find field \"#{ @fieldName }\" in " +
						 "#{ @objectType } domain class"
		raise( MissingError, errStr, caller )
	end
end

#not ⇒ Object 



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# File 'lib/lafcadio/query/Condition.rb', line 60

def not
	require 'lafcadio/query/Not'
	Query::Not.new( self )
end

#primaryKeyField? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lafcadio/query/Condition.rb', line 28

def primaryKeyField?
	[ @objectType.sqlPrimaryKeyName, 'pkId' ].include?( @fieldName )
end