Class: Spider::Model::Storage::Db::FieldFunction

Inherits:
Object
  • Object
show all
Defined in:
lib/spiderfw/model/storage/db/db_schema.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expression, table, joins) ⇒ FieldFunction

Returns a new instance of FieldFunction.



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 299

def initialize(expression, table, joins)
    @expression = expression
    @table = table
    @joins = joins
end

Instance Attribute Details

#as ⇒ Object

Returns the value of attribute as.



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 298

def as
  @as
end

#expression ⇒ Object (readonly)

Returns the value of attribute expression.



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 297

def expression
  @expression
end

#joins ⇒ Object (readonly)

Returns the value of attribute joins.



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 297

def joins
  @joins
end

#table ⇒ Object (readonly)

Returns the value of attribute table.



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 297

def table
  @table
end

Instance Method Details

#aggregate=(val) ⇒ Object 



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 305

def aggregate=(val)
    @aggregate = val
end

#aggregate? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 309

def aggregate?
    !!@aggregate
end

#to_s ⇒ Object 



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# File 'lib/spiderfw/model/storage/db/db_schema.rb', line 313

def to_s
    if @as
        "#{@expression} AS #{@as}"
    else
        @expression
    end
end