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module ActiveRecord::Import::SQLite3Adapter
include ActiveRecord::Import::ImportSupport
MIN_VERSION_FOR_IMPORT = "3.7.11".freeze
SQLITE_LIMIT_COMPOUND_SELECT = 500
# Override our conformance to ActiveRecord::Import::ImportSupport interface
# to ensure that we only support import in supported version of SQLite.
# Which INSERT statements with multiple value sets was introduced in 3.7.11.
def supports_import?(current_version = sqlite_version)
if current_version >= MIN_VERSION_FOR_IMPORT
true
else
false
end
end
# +sql+ can be a single string or an array. If it is an array all
# elements that are in position >= 1 will be appended to the final SQL.
def insert_many(sql, values, *args) # :nodoc:
number_of_inserts = 0
ids = []
base_sql, post_sql = if sql.is_a?( String )
[sql, '']
elsif sql.is_a?( Array )
[sql.shift, sql.join( ' ' )]
end
value_sets = ::ActiveRecord::Import::ValueSetsRecordsParser.parse(values,
max_records: SQLITE_LIMIT_COMPOUND_SELECT)
value_sets.each do |value_set|
number_of_inserts += 1
sql2insert = base_sql + value_set.join( ',' ) + post_sql
first_insert_id = insert( sql2insert, *args )
last_insert_id = first_insert_id + value_set.size - 1
ids.concat((first_insert_id..last_insert_id).to_a)
end
[number_of_inserts, ids]
end
def next_value_for_sequence(sequence_name)
%{nextval('#{sequence_name}')}
end
def support_setting_primary_key_of_imported_objects?
true
end
end
Version data entries
5 entries across 5 versions & 2 rubygems