2 * wc_db_util.c : Various util functions for wc_db(_pdh)
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25 This file is meant to be a stash of fairly low-level functions used by both
26 wc_db.c and wc_db_pdh.c. In breaking stuff out of the monolithic wc_db.c,
27 I have discovered that some utility functions are used by bits in both
28 files. Rather than shoehorn those functions into one file or the other, or
29 create circular dependencies between the files, I felt a third file, with
30 a well-defined scope, would be sensible. History will judge its effect.
32 The goal of it file is simple: just execute SQLite statements. That is,
33 functions in this file should have no knowledge of pdh's or db's, and
34 should just operate on the raw sdb object. If a function requires more
35 information than that, it shouldn't be in here. -hkw
38 #define SVN_WC__I_AM_WC_DB
40 #include "svn_dirent_uri.h"
41 #include "private/svn_sqlite.h"
44 #include "adm_files.h"
45 #include "wc_db_private.h"
46 #include "wc-queries.h"
48 #include "svn_private_config.h"
50 WC_QUERIES_SQL_DECLARE_STATEMENTS(statements);
56 svn_wc__db_util_fetch_wc_id(apr_int64_t *wc_id,
57 svn_sqlite__db_t *sdb,
58 apr_pool_t *scratch_pool)
60 svn_sqlite__stmt_t *stmt;
61 svn_boolean_t have_row;
63 /* ### cheat. we know there is just one WORKING_COPY row, and it has a
64 ### NULL value for local_abspath. */
65 SVN_ERR(svn_sqlite__get_statement(&stmt, sdb, STMT_SELECT_WCROOT_NULL));
66 SVN_ERR(svn_sqlite__step(&have_row, stmt));
68 return svn_error_createf(SVN_ERR_WC_CORRUPT, svn_sqlite__reset(stmt),
69 _("Missing a row in WCROOT."));
71 SVN_ERR_ASSERT(!svn_sqlite__column_is_null(stmt, 0));
72 *wc_id = svn_sqlite__column_int64(stmt, 0);
74 return svn_error_trace(svn_sqlite__reset(stmt));
80 /* An SQLite application defined function that allows SQL queries to
81 use "relpath_depth(local_relpath)". */
83 relpath_depth_sqlite(svn_sqlite__context_t *sctx,
85 svn_sqlite__value_t *values[],
86 apr_pool_t *scratch_pool)
88 const char *path = NULL;
91 if (argc == 1 && svn_sqlite__value_type(values[0]) == SVN_SQLITE__TEXT)
92 path = svn_sqlite__value_text(values[0]);
95 svn_sqlite__result_null(sctx);
99 depth = *path ? 1 : 0;
106 svn_sqlite__result_int64(sctx, depth);
113 svn_wc__db_util_open_db(svn_sqlite__db_t **sdb,
114 const char *dir_abspath,
115 const char *sdb_fname,
116 svn_sqlite__mode_t smode,
117 svn_boolean_t exclusive,
118 const char *const *my_statements,
119 apr_pool_t *result_pool,
120 apr_pool_t *scratch_pool)
122 const char *sdb_abspath = svn_wc__adm_child(dir_abspath, sdb_fname,
125 if (smode != svn_sqlite__mode_rwcreate)
127 svn_node_kind_t kind;
129 /* A file stat is much cheaper then a failed database open handled
131 SVN_ERR(svn_io_check_path(sdb_abspath, &kind, scratch_pool));
133 if (kind != svn_node_file)
134 return svn_error_createf(APR_ENOENT, NULL,
135 _("Working copy database '%s' not found"),
136 svn_dirent_local_style(sdb_abspath,
140 SVN_ERR(svn_sqlite__open(sdb, sdb_abspath, smode,
141 my_statements ? my_statements : statements,
142 0, NULL, result_pool, scratch_pool));
145 SVN_ERR(svn_sqlite__exec_statements(*sdb, STMT_PRAGMA_LOCKING_MODE));
147 SVN_ERR(svn_sqlite__create_scalar_function(*sdb, "relpath_depth", 1,
148 relpath_depth_sqlite, NULL));
154 /* Some helpful transaction helpers.
156 Instead of directly using SQLite transactions, these wrappers
157 relieve the consumer from the need to wrap the wcroot and
158 local_relpath, which are almost always used within the transaction.
160 This also means if we later want to implement some wc_db-specific txn
161 handling, we have a convenient place to do it.
164 /* A callback which supplies WCROOTs and LOCAL_RELPATHs. */
165 typedef svn_error_t *(*db_txn_callback_t)(void *baton,
166 svn_wc__db_wcroot_t *wcroot,
167 const char *local_relpath,
168 apr_pool_t *scratch_pool);
170 /* Baton for use with run_txn() and with_db_txn(). */
173 svn_wc__db_wcroot_t *wcroot;
174 const char *local_relpath;
176 db_txn_callback_t cb_func;
181 /* Unwrap the sqlite transaction into a wc_db txn.
182 Implements svn_sqlite__transaction_callback_t. */
184 run_txn(void *baton, svn_sqlite__db_t *db, apr_pool_t *scratch_pool)
186 struct txn_baton_t *tb = baton;
188 return svn_error_trace(
189 tb->cb_func(tb->cb_baton, tb->wcroot, tb->local_relpath, scratch_pool));
193 /* Run CB_FUNC in a SQLite transaction with CB_BATON, using WCROOT and
194 LOCAL_RELPATH. If callbacks require additional information, they may
195 provide it using CB_BATON. */
197 svn_wc__db_with_txn(svn_wc__db_wcroot_t *wcroot,
198 const char *local_relpath,
199 svn_wc__db_txn_callback_t cb_func,
201 apr_pool_t *scratch_pool)
203 struct txn_baton_t tb;
206 tb.local_relpath = local_relpath;
207 tb.cb_func = cb_func;
208 tb.cb_baton = cb_baton;
210 return svn_error_trace(
211 svn_sqlite__with_lock(wcroot->sdb, run_txn, &tb, scratch_pool));