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# frozen_string_literal: true
module Gitlab
module Database
module SchemaValidation
module Adapters
class ForeignKeyStructureSqlAdapter
STATEMENT_REGEX = /\bREFERENCES\s\K\S+\K\s\(/
EXTRACT_REGEX = /\bFOREIGN KEY.*/
def initialize(parsed_stmt)
@parsed_stmt = parsed_stmt
end
def name
"#{schema_name}.#{foreign_key_name}"
end
def table_name
parsed_stmt.relation.relname
end
# PgQuery parses FK statements with an extra space in the referenced table column.
# This extra space needs to be removed.
#
# @example REFERENCES ci_pipelines (id) => REFERENCES ci_pipelines(id)
def statement
deparse_stmt[EXTRACT_REGEX].gsub(STATEMENT_REGEX, '(')
end
private
attr_reader :parsed_stmt
def schema_name
parsed_stmt.relation.schemaname
end
def foreign_key_name
parsed_stmt.cmds.first.alter_table_cmd.def.constraint.conname
end
def deparse_stmt
PgQuery.deparse_stmt(parsed_stmt)
end
end
end
end
end
end
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