Module: SchemaPlus::ActiveRecord::ConnectionAdapters::Sqlite3Adapter
- Defined in:
- lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb
Overview
SchemaPlus includes an Sqlite3 implementation of the AbstractAdapter extensions.
Defined Under Namespace
Modules: AddColumnOptions
Class Method Summary
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Instance Method Summary
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#add_foreign_key(table_name, column_names, references_table_name, references_column_names, options = {}) ⇒ Object
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#drop_table(name, options = {}) ⇒ Object
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#foreign_keys(table_name, name = nil) ⇒ Object
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#indexes_with_schema_plus(table_name, name = nil) ⇒ Object
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#initialize(*args) ⇒ Object
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#remove_foreign_key(table_name, foreign_key_name) ⇒ Object
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#rename_table_with_schema_plus(oldname, newname) ⇒ Object
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#reverse_foreign_keys(table_name, name = nil) ⇒ Object
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#supports_partial_indexes? ⇒ Boolean
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#tables_with_schema_plus(*args) ⇒ Object
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#view_definition(view_name, name = nil) ⇒ Object
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#views(name = nil) ⇒ Object
Class Method Details
.included(base) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 29
def self.included(base)
base.class_eval do
alias_method_chain :indexes, :schema_plus
alias_method_chain :rename_table, :schema_plus
alias_method_chain :tables, :schema_plus
end
if ::ActiveRecord::VERSION::MAJOR.to_i < 4
::ActiveRecord::ConnectionAdapters::SQLiteColumn.send(:include, SQLiteColumn) unless ::ActiveRecord::ConnectionAdapters::SQLiteColumn.include?(SQLiteColumn)
elsif defined? ::ActiveRecord::ConnectionAdapters::SQLite3Column
::ActiveRecord::ConnectionAdapters::SQLite3Column.send(:include, SQLiteColumn) unless ::ActiveRecord::ConnectionAdapters::SQLite3Column.include?(SQLiteColumn)
else ::ActiveRecord::ConnectionAdapters::Column.send(:include, SQLiteColumn) unless ::ActiveRecord::ConnectionAdapters::Column.include?(SQLiteColumn)
end
end
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Instance Method Details
#add_foreign_key(table_name, column_names, references_table_name, references_column_names, options = {}) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 80
def add_foreign_key(table_name, column_names, references_table_name, references_column_names, options = {})
raise NotImplementedError, "Sqlite3 does not support altering a table to add foreign key constraints (table #{table_name.inspect} column #{column_names.inspect})"
end
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#drop_table(name, options = {}) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 88
def drop_table(name, options={})
super(name, options.except(:cascade))
end
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#foreign_keys(table_name, name = nil) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 92
def foreign_keys(table_name, name = nil)
get_foreign_keys(table_name, name)
end
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#indexes_with_schema_plus(table_name, name = nil) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 57
def indexes_with_schema_plus(table_name, name = nil)
indexes = indexes_without_schema_plus(table_name, name)
exec_query("SELECT name, sql FROM sqlite_master WHERE type = 'index'").map do |row|
sql = row['sql']
index = nil
getindex = -> { index ||= indexes.detect { |i| i.name == row['name'] } }
if (desc_columns = sql.scan(/['"`]?(\w+)['"`]? DESC\b/).flatten).any?
getindex.call()
index.orders = Hash[index.columns.map {|column| [column, desc_columns.include?(column) ? :desc : :asc]}]
end
if (conditions = sql.match(/\bWHERE\s+(.*)/i))
getindex.call()
index.conditions = conditions[1]
end
end
indexes
end
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#initialize(*args) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 45
def initialize(*args)
super
execute('PRAGMA FOREIGN_KEYS = ON')
end
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#remove_foreign_key(table_name, foreign_key_name) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 84
def remove_foreign_key(table_name, foreign_key_name)
raise NotImplementedError, "Sqlite3 does not support altering a table to remove foreign key constraints (table #{table_name.inspect} constraint #{foreign_key_name.inspect})"
end
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#rename_table_with_schema_plus(oldname, newname) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 75
def rename_table_with_schema_plus(oldname, newname) rename_table_without_schema_plus(oldname, newname)
rename_indexes_and_foreign_keys(oldname, newname)
end
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#reverse_foreign_keys(table_name, name = nil) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 96
def reverse_foreign_keys(table_name, name = nil)
get_foreign_keys(nil, name).select{|definition| definition.references_table_name == table_name}
end
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#supports_partial_indexes? ⇒ Boolean
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 50
def supports_partial_indexes? SQLite3.libversion >= 3008000
end
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#tables_with_schema_plus(*args) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 100
def tables_with_schema_plus(*args)
tables_without_schema_plus(*args) - views
end
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#view_definition(view_name, name = nil) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 109
def view_definition(view_name, name = nil)
sql = execute("SELECT sql FROM sqlite_master WHERE type='view' AND name=#{quote(view_name)}", name).collect{|row| row["sql"]}.first
sql.sub(/^CREATE VIEW \S* AS\s+/im, '') unless sql.nil?
end
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#views(name = nil) ⇒ Object
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# File 'lib/schema_plus/active_record/connection_adapters/sqlite3_adapter.rb', line 105
def views(name = nil)
execute("SELECT name FROM sqlite_master WHERE type='view'", name).collect{|row| row["name"]}
end
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