Class: DatastaxRails::Cql::AlterColumnFamily
- Defined in:
- lib/datastax_rails/cql/alter_column_family.rb
Overview
:nodoc:
Instance Method Summary collapse
- #add(column) ⇒ Object
- #alter(column) ⇒ Object
- #drop(column) ⇒ Object
-
#initialize(cf_name) ⇒ AlterColumnFamily
constructor
A new instance of AlterColumnFamily.
- #rename(col1, col2) ⇒ Object
-
#set_column(column) ⇒ Object
rubocop:disable Style/AccessorMethodName.
- #to_cql ⇒ Object
Methods inherited from Base
Constructor Details
#initialize(cf_name) ⇒ AlterColumnFamily
Returns a new instance of AlterColumnFamily.
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 4 def initialize(cf_name) @cf_name = cf_name @action = nil end |
Instance Method Details
#add(column) ⇒ Object
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 9 def add(column) set_column(column) @action = 'ADD' self end |
#alter(column) ⇒ Object
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 21 def alter(column) set_column(column) @action = 'ALTER' self end |
#drop(column) ⇒ Object
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 15 def drop(column) set_column(column) @action = 'DROP' self end |
#rename(col1, col2) ⇒ Object
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 27 def rename(col1, col2) set_column([col1, col2]) @action = 'RENAME' self end |
#set_column(column) ⇒ Object
rubocop:disable Style/AccessorMethodName
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 33 def set_column(column) # rubocop:disable Style/AccessorMethodName fail ArgumentError, 'Only one operation allowed per CQL call' if @action @column = column end |
#to_cql ⇒ Object
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# File 'lib/datastax_rails/cql/alter_column_family.rb', line 38 def to_cql stmt = "ALTER COLUMNFAMILY #{@cf_name} " if (@action == 'ALTER') stmt << "ALTER #{@column.keys.first} TYPE #{@column.values.first}" elsif (@action == 'ADD') stmt << "ADD #{@column.keys.first} #{@column.values.first}" elsif (@action == 'DROP') stmt << "DROP #{@column}" elsif (@action == 'RENAME') stmt << "RENAME \"#{@column[0]}\" TO \"#{@column[1]}\"" end stmt end |