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-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements. See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
;
-- Routines related to the delivery transaction
-- Section 2.7
--
-- OrderEntry (OE) uses the database as the queueing
-- mechanism and the "results file"
-- described by the TPC-C specification in section 2.7.
-- This exceeds the requirements of the specification
-- (no ACID required) but since the focus of OE is to
-- test Derby, it seems additional work against the
-- database is a good thing. It also provides a consistent
-- and standard way to access the data, including from clients.
;
-- Requests are queued in this table.
-- DR_STATE Q-queued, Pin progress, C-complete, E-error
;
CREATE TABLE DELIVERY_REQUEST
(
DR_ID INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
DR_W_ID SMALLINT NOT NULL,
DR_CARRIER_ID SMALLINT NOT NULL,
DR_QUEUED TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
DR_COMPLETED TIMESTAMP,
DR_STATE CHAR(1)
CONSTRAINT DR_STATE_CHECK CHECK (DR_STATE IN ('Q', 'I', 'C', 'E'))
);
-- Index to allow lookup of the oldest queued order.
;
CREATE INDEX DR_LOOKUP ON DELIVERY_REQUEST(DR_STATE, DR_QUEUED);
-- Record of orders delivered.
-- A NULL DL_O_ID means that no orders for that district could be delivered.
;
CREATE TABLE DELIVERY_ORDERS
(
DO_DR_ID INTEGER NOT NULL CONSTRAINT DO_FK REFERENCES DELIVERY_REQUEST(DR_ID),
DO_D_ID SMALLINT NOT NULL,
DO_O_ID INTEGER
);
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