class ROM::Cassandra::Relation
Relation
subclass of Cassandra
adapter
@example
class Users < ROM::Relation[:cassandra] def last_ten_admins select(:id, :name) .where(role: "admin") .using(consistency: :quorum) .order(:name, :desc) .limit(10) end end
@api public
Attributes
source[R]
@!attribute [r] source
@return [ROM::Cassandra::Dataset]
The source dataset before `get` method has been applied
Public Class Methods
new(*)
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@private
Calls superclass method
# File lib/rom/cassandra/relation.rb, line 33 def initialize(*) super return if (@source = options[:source]) @source = dataset @dataset = dataset.get end
Public Instance Methods
batch_query()
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Returns the relation whose source is restricted by ‘#delete` lazy query
@return [ROM::Cassandra::Relation]
# File lib/rom/cassandra/relation.rb, line 68 def batch_query reload source.batch end
delete_query()
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Returns the relation whose source is restricted by ‘#delete` lazy query
@return [ROM::Cassandra::Relation]
# File lib/rom/cassandra/relation.rb, line 60 def delete_query reload source.delete end
insert_query()
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Returns the relation whose source is restricted by ‘#insert` lazy query
@return [ROM::Cassandra::Relation]
# File lib/rom/cassandra/relation.rb, line 44 def insert_query reload source.insert end
update_query()
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Returns the relation whose source is restricted by ‘#update` lazy query
@return [ROM::Cassandra::Relation]
# File lib/rom/cassandra/relation.rb, line 52 def update_query reload source.update end
Private Instance Methods
method_missing(name, *args)
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# File lib/rom/cassandra/relation.rb, line 78 def method_missing(name, *args) reload dataset.public_send(name, *args) end
reload(dataset)
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# File lib/rom/cassandra/relation.rb, line 82 def reload(dataset) Relation.new dataset, source: source end
respond_to_missing?(name, *)
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# File lib/rom/cassandra/relation.rb, line 74 def respond_to_missing?(name, *) dataset.respond_to? name end