Module: ActiveRecord::ConnectionAdapters::Trino::SchemaStatements

Included in:
ActiveRecord::ConnectionAdapters::TrinoAdapter
Defined in:
lib/active_record/connection_adapters/trino/schema_statements.rb

Instance Method Summary collapse

Instance Method Details

#clear_column_cache! ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 51

def clear_column_cache!
  @column_definitions = nil
end

#columns(table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 7

def columns(table_name)
  table = table_name.to_s
  declared = ActiveRecord::Trino.static_columns[table]
  return build_static_columns(declared) if declared

  if bulk_column_reflection?
    column_definitions.fetch(table, [])
  else
    build_columns(run_trino_query(table_columns_query(table)).rows)
  end
end

#data_sources ⇒ Object Also known as: tables 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 19

def data_sources
  return ActiveRecord::Trino.static_columns.keys if static_schema?

  run_trino_query("SHOW TABLES").rows.map(&:first)
end

#foreign_keys(_table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 39

def foreign_keys(_table_name)
  []
end

#indexes(_table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 35

def indexes(_table_name)
  []
end

#primary_key(_table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 31

def primary_key(_table_name)
  nil
end

#table_exists?(table_name) ⇒ Boolean Also known as: data_source_exists?

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 26

def table_exists?(table_name)
  data_sources.include?(table_name.to_s)
end

#view_exists?(_view_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 47

def view_exists?(_view_name)
  false
end

#views ⇒ Object 



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# File 'lib/active_record/connection_adapters/trino/schema_statements.rb', line 43

def views
  []
end