Class: ArelExtensions::Nodes::DateAdd
- Inherits:
-
Function
- Object
- Arel::Nodes::Function
- Function
- ArelExtensions::Nodes::DateAdd
show all
- Defined in:
- lib/arel_extensions/nodes/date_diff.rb
Constant Summary
collapse
- RETURN_TYPE =
:date
Constants inherited
from Function
Function::MBSTRING
Instance Attribute Summary collapse
Instance Method Summary
collapse
Methods inherited from Function
#!=, #==, #as, #convert_to_date_node, #convert_to_datetime_node, #convert_to_node, #convert_to_number, #convert_to_string_node, #expr, #left, #return_type, #right, #type_of_attribute
#cast, #convert_to_node, #imatches, #in, #matches, #not_in, #when
Constructor Details
#initialize(expr) ⇒ DateAdd
Returns a new instance of DateAdd.
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 40
def initialize expr
col = expr.first
@date_type = type_of_attribute(col)
tab = expr.map do |arg|
convert(arg)
end
return super(tab)
end
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Instance Attribute Details
#date_type ⇒ Object
Returns the value of attribute date_type.
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 38
def date_type
@date_type
end
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Instance Method Details
#mssql_datepart(v = nil) ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 136
def mssql_datepart(v = nil)
v ||= self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :date
Arel.sql('day')
elsif @date_type == :datetime
res = if v.parts.size == 1
v.parts.first.first.to_s[0..-2]
else
'second'
end
Arel.sql(res)
end
else
if ArelExtensions::Nodes::Duration === v
v.with_interval = true
case v.left
when 'd','m','y'
Arel.sql('day')
when 'h','mn','s'
Arel.sql('second')
when /i\z/
Arel.sql(ArelExtensions::Visitors::MSSQL::LOADED_VISITOR::DATE_MAPPING[v.left[0..-2]])
else
Arel.sql(ArelExtensions::Visitors::MSSQL::LOADED_VISITOR::DATE_MAPPING[v.left])
end
end
end
end
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#mssql_value(v = nil) ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 114
def mssql_value(v = nil)
v ||= self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :date
v.to_i / (24*3600)
elsif @date_type == :datetime
if v.parts.size == 1
v.parts.first.second
else
v.to_i
end
end
else
v
end
end
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#mysql_value(v = nil) ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 62
def mysql_value(v = nil)
v ||= self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :date || @date_type == :datetime
Arel.sql('INTERVAL %s' % v.inspect.sub(/s\Z/, ''))
end
else
if ArelExtensions::Nodes::Duration === v
v.with_interval = true
v
else
v
end
end
end
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#oracle_value(v = nil) ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 96
def oracle_value(v = nil)
v ||= self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :ruby_date
Arel.sql("(INTERVAL '1' DAY) * %s" % v.inspect.to_i)
else
Arel.sql("(INTERVAL '1' SECOND) * %s" % v.to_i)
end
else
if ArelExtensions::Nodes::Duration === v
v.with_interval = true
v
else
v
end
end
end
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#postgresql_value(v = nil) ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 78
def postgresql_value(v = nil)
v ||= self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :date
Arel.sql("INTERVAL '%s'" % v.inspect.sub(/s\Z/, '').upcase)
elsif @date_type == :datetime
Arel.sql("INTERVAL '%s'" % v.inspect.sub(/s\Z/, '').upcase)
end
else
if ArelExtensions::Nodes::Duration === v
v.with_interval = true
v
else
v
end
end
end
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#sqlite_value ⇒ Object
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# File 'lib/arel_extensions/nodes/date_diff.rb', line 49
def sqlite_value
v = self.expressions.last
if defined?(ActiveSupport::Duration) && ActiveSupport::Duration === v
if @date_type == :date
return Arel::Nodes.build_quoted((v.value >= 0 ? '+' : '-') + v.inspect)
elsif @date_type == :datetime
return Arel::Nodes.build_quoted((v.value >= 0 ? '+' : '-') + v.inspect)
end
else
return v
end
end
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