1 /* rep-cache-db.sql -- schema for use in rep-caching
2 * This is intended for use with SQLite 3
4 * ====================================================================
5 * Licensed to the Apache Software Foundation (ASF) under one
6 * or more contributor license agreements. See the NOTICE file
7 * distributed with this work for additional information
8 * regarding copyright ownership. The ASF licenses this file
9 * to you under the Apache License, Version 2.0 (the
10 * "License"); you may not use this file except in compliance
11 * with the License. You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing,
16 * software distributed under the License is distributed on an
17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18 * KIND, either express or implied. See the License for the
19 * specific language governing permissions and limitations
21 * ====================================================================
25 /* A table mapping representation hashes to locations in a rev file. */
26 CREATE TABLE rep_cache (
27 hash TEXT NOT NULL PRIMARY KEY,
28 revision INTEGER NOT NULL,
29 offset INTEGER NOT NULL,
30 size INTEGER NOT NULL,
31 expanded_size INTEGER NOT NULL
34 PRAGMA USER_VERSION = 1;
38 SELECT revision, offset, size, expanded_size
43 INSERT OR FAIL INTO rep_cache (hash, revision, offset, size, expanded_size)
44 VALUES (?1, ?2, ?3, ?4, ?5)
46 -- STMT_GET_REPS_FOR_RANGE
47 SELECT hash, revision, offset, size, expanded_size
49 WHERE revision >= ?1 AND revision <= ?2
55 -- STMT_DEL_REPS_YOUNGER_THAN_REV
59 /* An INSERT takes an SQLite reserved lock that prevents other writes
60 but doesn't block reads. The incomplete transaction means that no
61 permanent change is made to the database and the transaction is
62 removed when the database is closed. */
65 INSERT INTO rep_cache VALUES ('dummy', 0, 0, 0, 0)