Class: Cassie::Modification

Inherits:

Object

• Object
• Cassie::Modification

Includes:

Connection, Statements::Core, Statements::Modification

Defined in:

lib/cassie/modification.rb

Overview

A concrete implementation of a functional base class used to make CQL INSERT, UPDATE, and DELETE queries. Inherit from this class to create application query classes.

• The Cassandra connection is provided and managed by Connection

• Generic statement functionality is provided by Statements::Core

• INSERT|UPDATE|DELETE specific statement DSL and functionality is provided by Statements::Modification

See the README for information on usage and examples.

Examples:

Inserting a record into a Table

class InsertUserQuery < Cassie::Modification

  insert_into :users_by_username
  consistency :all

  set :id
  set :username

  map_from :user

  def id
    Cassandra::TimeUuid::Generator.new.now
  end
end

InsertUserQuery.new(user: user).excecute
#=> true

Direct Known Subclasses

FakeModification, Schema::DeleteVersionQuery, Schema::InsertVersionQuery

Instance Attribute Summary

Attributes included from Statements::Execution::ClassMethods

#result_class

Attributes included from Statements::Statement

#cql, #params

Method Summary

Methods included from Statements::Core

#initialize

Methods included from Statements::Execution::ClassMethods

#inherited

Methods included from Statements::Execution

#execute, #execute!, #execution_options

Methods included from Statements::Execution::Instrumentation

#execute

Methods included from Statements::Execution::PartitionLinking

#build_partition_linker, #execute, #partition_linker?

Methods included from Statements::Execution::Callbacks

#execute

Methods included from Statements::Execution::Consistency

#consistency

Methods included from Statements::Statement

#logger, #statement, #table, #to_cql

Methods included from Statements::Statement::Preparation::ClassMethods

#prepare, #prepare=, #prepare?

Methods included from Statements::Statement::Idempotency::ClassMethods

#idempotent, #idempotent=, #idempotent?, #non_idempotent

Methods included from Statements::Statement::Idempotency

#idempotent, #idempotent?

Methods included from Statements::Statement::TypeHinting::ClassMethods

#type_hints, #type_hints=

Methods included from Statements::Statement::TypeHinting

#type_hints

Methods included from Statements::Statement::Preparation

cache, init_cache, #statement

Methods included from Connection

#keyspace, #session

Methods included from Connection::ClassMethods

#keyspace, #keyspace=