int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
WT_SESSION *session;
home = example_setup(argc, argv);
/* Open a connection to the database, creating it if necessary. */
error_check(wiredtiger_open(home, NULL, "create", &conn));
/*! [add collator nocase] */
error_check(conn->add_collator(conn, "nocase", &nocasecoll, NULL));
/*! [add collator nocase] */
/*! [add collator prefix10] */
error_check(conn->add_collator(conn, "prefix10", &pcoll10.iface, NULL));
/* Open a session for the current thread's work. */
error_check(conn->open_session(conn, NULL, NULL, &session));
/* Do some work... */
error_check(conn->close(conn, NULL));
/*! [add collator prefix10] */
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
WT_CURSOR *cursor;
WT_SESSION *session;
home = example_setup(argc, argv);
/* Open a connection to the database, creating it if necessary. */
error_check(wiredtiger_open(
home, NULL, "create,statistics=(fast)", &conn));
/* Open a session for the current thread's work. */
error_check(conn->open_session(conn, NULL, NULL, &session));
error_check(session->create(session, "table:world",
"key_format=r,value_format=5sii,"
"columns=(id,country,population,area)"));
/*! [open cursor #1] */
error_check(session->open_cursor(
session, "table:world", NULL, NULL, &cursor));
/*! [open cursor #1] */
/*! [open cursor #2] */
error_check(session->open_cursor(session,
"table:world(country,population)", NULL, NULL, &cursor));
/*! [open cursor #2] */
/*! [open cursor #3] */
error_check(session->open_cursor(
session, "statistics:", NULL, NULL, &cursor));
/*! [open cursor #3] */
/* Create a simple string table to illustrate basic operations. */
error_check(session->create(
session, "table:map", "key_format=S,value_format=S"));
error_check(session->open_cursor(
session, "table:map", NULL, NULL, &cursor));
error_check(cursor_insert(cursor));
error_check(cursor_reset(cursor));
error_check(cursor_forward_scan(cursor));
error_check(cursor_reset(cursor));
error_check(cursor_reverse_scan(cursor));
error_check(cursor_search_near(cursor));
error_check(cursor_update(cursor));
error_check(cursor_remove(cursor));
error_check(cursor->close(cursor));
/* Note: closing the connection implicitly closes open session(s). */
error_check(conn->close(conn, NULL));
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
WT_SESSION *session;
home = example_setup(argc, argv);
error_check(
wiredtiger_open(home, NULL, "create,cache_size=500M", &conn));
add_extractor(conn);
error_check(conn->open_session(conn, NULL, NULL, &session));
setup_table(session);
read_index(session);
remove_items(session);
error_check(conn->close(conn, NULL));
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
WT_CURSOR *cursor;
WT_SESSION *session;
home = example_setup(argc, argv);
error_check(
wiredtiger_open(home, NULL, "create,statistics=(all)", &conn));
error_check(conn->open_session(conn, NULL, NULL, &session));
error_check(session->create(session,
"table:access", "key_format=S,value_format=S,columns=(k,v)"));
error_check(session->open_cursor(
session, "table:access", NULL, NULL, &cursor));
cursor->set_key(cursor, "key");
cursor->set_value(cursor, "value");
error_check(cursor->insert(cursor));
error_check(cursor->close(cursor));
error_check(session->checkpoint(session, NULL));
print_database_stats(session);
print_file_stats(session);
print_join_cursor_stats(session);
print_overflow_pages(session);
print_derived_stats(session);
error_check(conn->close(conn, NULL));
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
POP_RECORD *p;
WT_CONNECTION *conn;
WT_CURSOR *country_cursor, *country_cursor2, *cursor, *join_cursor,
*stat_cursor, *subjoin_cursor, *year_cursor;
WT_SESSION *session;
const char *country;
uint64_t recno, population;
uint16_t year;
int ret;
home = example_setup(argc, argv);
error_check(wiredtiger_open(
home, NULL, "create,statistics=(fast)", &conn));
error_check(conn->open_session(conn, NULL, NULL, &session));
/*! [Create a table with column groups] */
/*
* Create the population table.
* Keys are record numbers, the format for values is (5-byte string,
* uint16_t, uint64_t).
* See ::wiredtiger_struct_pack for details of the format strings.
*/
error_check(session->create(session, "table:poptable",
"key_format=r,"
"value_format=5sHQ,"
"columns=(id,country,year,population),"
"colgroups=(main,population)"));
/*
* Create two column groups: a primary column group with the country
* code, year and population (named "main"), and a population column
* group with the population by itself (named "population").
*/
error_check(session->create(session,
"colgroup:poptable:main", "columns=(country,year,population)"));
error_check(session->create(session,
"colgroup:poptable:population", "columns=(population)"));
/*! [Create a table with column groups] */
/*! [Create an index] */
/* Create an index with a simple key. */
error_check(session->create(session,
"index:poptable:country", "columns=(country)"));
/*! [Create an index] */
/*! [Create an index with a composite key] */
/* Create an index with a composite key (country,year). */
error_check(session->create(session,
"index:poptable:country_plus_year", "columns=(country,year)"));
/*! [Create an index with a composite key] */
/*! [Create an immutable index] */
/* Create an immutable index. */
error_check(session->create(session,
"index:poptable:immutable_year", "columns=(year),immutable"));
/*! [Create an immutable index] */
/* Insert the records into the table. */
error_check(session->open_cursor(
session, "table:poptable", NULL, "append", &cursor));
for (p = pop_data; p->year != 0; p++) {
cursor->set_value(cursor, p->country, p->year, p->population);
error_check(cursor->insert(cursor));
}
error_check(cursor->close(cursor));
/* Update records in the table. */
error_check(session->open_cursor(session,
"table:poptable", NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_key(cursor, &recno));
error_check(cursor->get_value(
cursor, &country, &year, &population));
cursor->set_value(cursor, country, year, population + 1);
error_check(cursor->update(cursor));
}
scan_end_check(ret == WT_NOTFOUND);
error_check(cursor->close(cursor));
/* List the records in the table. */
error_check(session->open_cursor(session,
"table:poptable", NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_key(cursor, &recno));
error_check(cursor->get_value(
cursor, &country, &year, &population));
printf("ID %" PRIu64, recno);
printf(
": country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
}
scan_end_check(ret == WT_NOTFOUND);
error_check(cursor->close(cursor));
/*! [List the records in the table using raw mode.] */
/* List the records in the table using raw mode. */
error_check(session->open_cursor(session,
"table:poptable", NULL, "raw", &cursor));
while ((ret = cursor->next(cursor)) == 0) {
WT_ITEM key, value;
error_check(cursor->get_key(cursor, &key));
error_check(wiredtiger_struct_unpack(
session, key.data, key.size, "r", &recno));
printf("ID %" PRIu64, recno);
error_check(cursor->get_value(cursor, &value));
error_check(wiredtiger_struct_unpack(session,
value.data, value.size,
"5sHQ", &country, &year, &population));
printf(
": country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [List the records in the table using raw mode.] */
error_check(cursor->close(cursor));
/*! [Read population from the primary column group] */
/*
* Open a cursor on the main column group, and return the information
* for a particular country.
*/
error_check(session->open_cursor(
session, "colgroup:poptable:main", NULL, NULL, &cursor));
cursor->set_key(cursor, 2);
error_check(cursor->search(cursor));
error_check(cursor->get_value(cursor, &country, &year, &population));
printf(
"ID 2: country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
/*! [Read population from the primary column group] */
error_check(cursor->close(cursor));
/*! [Read population from the standalone column group] */
/*
* Open a cursor on the population column group, and return the
* population of a particular country.
*/
error_check(session->open_cursor(session,
"colgroup:poptable:population", NULL, NULL, &cursor));
cursor->set_key(cursor, 2);
error_check(cursor->search(cursor));
error_check(cursor->get_value(cursor, &population));
printf("ID 2: population %" PRIu64 "\n", population);
/*! [Read population from the standalone column group] */
error_check(cursor->close(cursor));
/*! [Search in a simple index] */
/* Search in a simple index. */
error_check(session->open_cursor(session,
"index:poptable:country", NULL, NULL, &cursor));
cursor->set_key(cursor, "AU\0\0\0");
error_check(cursor->search(cursor));
error_check(cursor->get_value(cursor, &country, &year, &population));
printf("AU: country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
/*! [Search in a simple index] */
error_check(cursor->close(cursor));
/*! [Search in a composite index] */
/* Search in a composite index. */
error_check(session->open_cursor(session,
"index:poptable:country_plus_year", NULL, NULL, &cursor));
cursor->set_key(cursor, "USA\0\0", (uint16_t)1900);
error_check(cursor->search(cursor));
error_check(cursor->get_value(cursor, &country, &year, &population));
printf(
"US 1900: country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
/*! [Search in a composite index] */
error_check(cursor->close(cursor));
/*! [Return a subset of values from the table] */
/*
* Use a projection to return just the table's country and year
* columns.
*/
error_check(session->open_cursor(session,
"table:poptable(country,year)", NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_value(cursor, &country, &year));
printf("country %s, year %" PRIu16 "\n", country, year);
}
/*! [Return a subset of values from the table] */
scan_end_check(ret == WT_NOTFOUND);
error_check(cursor->close(cursor));
/*! [Return a subset of values from the table using raw mode] */
/*
* Use a projection to return just the table's country and year
* columns, using raw mode.
*/
error_check(session->open_cursor(session,
"table:poptable(country,year)", NULL, "raw", &cursor));
while ((ret = cursor->next(cursor)) == 0) {
WT_ITEM value;
error_check(cursor->get_value(cursor, &value));
error_check(wiredtiger_struct_unpack(
session, value.data, value.size, "5sH", &country, &year));
printf("country %s, year %" PRIu16 "\n", country, year);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Return a subset of values from the table using raw mode] */
error_check(cursor->close(cursor));
/*! [Return the table's record number key using an index] */
/*
* Use a projection to return just the table's record number key
* from an index.
*/
error_check(session->open_cursor(session,
"index:poptable:country_plus_year(id)", NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_key(cursor, &country, &year));
error_check(cursor->get_value(cursor, &recno));
printf("row ID %" PRIu64 ": country %s, year %" PRIu16 "\n",
recno, country, year);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Return the table's record number key using an index] */
error_check(cursor->close(cursor));
/*! [Return a subset of the value columns from an index] */
/*
* Use a projection to return just the population column from an
* index.
*/
error_check(session->open_cursor(session,
"index:poptable:country_plus_year(population)",
NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_key(cursor, &country, &year));
error_check(cursor->get_value(cursor, &population));
printf("population %" PRIu64 ": country %s, year %" PRIu16 "\n",
population, country, year);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Return a subset of the value columns from an index] */
error_check(cursor->close(cursor));
/*! [Access only the index] */
/*
* Use a projection to avoid accessing any other column groups when
* using an index: supply an empty list of value columns.
*/
error_check(session->open_cursor(session,
"index:poptable:country_plus_year()", NULL, NULL, &cursor));
while ((ret = cursor->next(cursor)) == 0) {
error_check(cursor->get_key(cursor, &country, &year));
printf("country %s, year %" PRIu16 "\n", country, year);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Access only the index] */
error_check(cursor->close(cursor));
/*! [Join cursors] */
/* Open cursors needed by the join. */
error_check(session->open_cursor(session,
"join:table:poptable", NULL, NULL, &join_cursor));
error_check(session->open_cursor(session,
"index:poptable:country", NULL, NULL, &country_cursor));
error_check(session->open_cursor(session,
"index:poptable:immutable_year", NULL, NULL, &year_cursor));
/* select values WHERE country == "AU" AND year > 1900 */
country_cursor->set_key(country_cursor, "AU\0\0\0");
error_check(country_cursor->search(country_cursor));
error_check(session->join(
session, join_cursor, country_cursor, "compare=eq,count=10"));
year_cursor->set_key(year_cursor, (uint16_t)1900);
error_check(year_cursor->search(year_cursor));
error_check(session->join(session,
join_cursor, year_cursor, "compare=gt,count=10,strategy=bloom"));
/* List the values that are joined */
while ((ret = join_cursor->next(join_cursor)) == 0) {
error_check(join_cursor->get_key(join_cursor, &recno));
error_check(join_cursor->get_value(
join_cursor, &country, &year, &population));
printf("ID %" PRIu64, recno);
printf(
": country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Join cursors] */
/*! [Statistics cursor join cursor] */
error_check(session->open_cursor(session,
"statistics:join",
join_cursor, NULL, &stat_cursor));
/*! [Statistics cursor join cursor] */
error_check(stat_cursor->close(stat_cursor));
error_check(join_cursor->close(join_cursor));
error_check(year_cursor->close(year_cursor));
error_check(country_cursor->close(country_cursor));
/*! [Complex join cursors] */
/* Open cursors needed by the join. */
error_check(session->open_cursor(session,
"join:table:poptable", NULL, NULL, &join_cursor));
error_check(session->open_cursor(session,
"join:table:poptable", NULL, NULL, &subjoin_cursor));
error_check(session->open_cursor(session,
"index:poptable:country", NULL, NULL, &country_cursor));
error_check(session->open_cursor(session,
"index:poptable:country", NULL, NULL, &country_cursor2));
error_check(session->open_cursor(session,
"index:poptable:immutable_year", NULL, NULL, &year_cursor));
/*
* select values WHERE (country == "AU" OR country == "UK")
* AND year > 1900
*
* First, set up the join representing the country clause.
*/
country_cursor->set_key(country_cursor, "AU\0\0\0");
error_check(country_cursor->search(country_cursor));
error_check(session->join(session, subjoin_cursor,
country_cursor, "operation=or,compare=eq,count=10"));
country_cursor2->set_key(country_cursor2, "UK\0\0\0");
error_check(country_cursor2->search(country_cursor2));
error_check(session->join(session, subjoin_cursor,
country_cursor2, "operation=or,compare=eq,count=10"));
/* Join that to the top join, and add the year clause */
error_check(session->join(session, join_cursor, subjoin_cursor, NULL));
year_cursor->set_key(year_cursor, (uint16_t)1900);
error_check(year_cursor->search(year_cursor));
error_check(session->join(session,
join_cursor, year_cursor, "compare=gt,count=10,strategy=bloom"));
/* List the values that are joined */
while ((ret = join_cursor->next(join_cursor)) == 0) {
error_check(join_cursor->get_key(join_cursor, &recno));
error_check(join_cursor->get_value(
join_cursor, &country, &year, &population));
printf("ID %" PRIu64, recno);
printf(
": country %s, year %" PRIu16 ", population %" PRIu64 "\n",
country, year, population);
}
scan_end_check(ret == WT_NOTFOUND);
/*! [Complex join cursors] */
error_check(join_cursor->close(join_cursor));
error_check(subjoin_cursor->close(subjoin_cursor));
error_check(country_cursor->close(country_cursor));
error_check(country_cursor2->close(country_cursor2));
error_check(year_cursor->close(year_cursor));
error_check(conn->close(conn, NULL));
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
WT_CURSOR *c1, *c2, *nc;
WT_SESSION *session;
int i, ret;
char keybuf[32], valbuf[32];
char *key1, *key2, *key3, *val1, *val2, *val3;
home = example_setup(argc, argv);
error_check(wiredtiger_open(home, NULL, WT_OPEN_CONFIG_GOOD, &conn));
error_check(conn->open_session(conn, NULL, NULL, &session));
/*
* Write a log record that is larger than the base 128 bytes and
* also should compress well.
*/
error_check(session->log_printf(session,
COMP_A COMP_B COMP_C COMP_A COMP_B COMP_C
COMP_A COMP_B COMP_C COMP_A COMP_B COMP_C
"The quick brown fox jumps over the lazy dog "));
simple_walk_log(session);
/*
* Create and open some encrypted and not encrypted tables.
* Also use column store and compression for some tables.
*/
error_check(session->create(session, "table:crypto1",
"encryption=(name=rotn,keyid=" USER1_KEYID"),"
"columns=(key0,value0),"
"key_format=S,value_format=S"));
error_check(session->create(session, "index:crypto1:byvalue",
"encryption=(name=rotn,keyid=" USER1_KEYID"),"
"columns=(value0,key0)"));
error_check(session->create(session, "table:crypto2",
"encryption=(name=rotn,keyid=" USER2_KEYID"),"
"key_format=S,value_format=S"));
error_check(session->create(session, "table:nocrypto",
"key_format=S,value_format=S"));
/*
* Send in an unknown keyid. WiredTiger will try to add in the
* new keyid, but the customize function above will return an
* error since it is unrecognized.
*/
ret = session->create(session, "table:cryptobad",
"encryption=(name=rotn,keyid=" USERBAD_KEYID"),"
"key_format=S,value_format=S");
if (ret == 0) {
fprintf(stderr, "Did not detect bad/unknown keyid error\n");
exit(EXIT_FAILURE);
}
error_check(session->open_cursor(
session, "table:crypto1", NULL, NULL, &c1));
error_check(session->open_cursor(
session, "table:crypto2", NULL, NULL, &c2));
error_check(session->open_cursor(
session, "table:nocrypto", NULL, NULL, &nc));
/*
* Insert a set of keys and values. Insert the same data into
* all tables so that we can verify they're all the same after
* we decrypt on read.
*/
for (i = 0; i < MAX_KEYS; i++) {
(void)snprintf(keybuf, sizeof(keybuf), "key%d", i);
c1->set_key(c1, keybuf);
c2->set_key(c2, keybuf);
nc->set_key(nc, keybuf);
(void)snprintf(valbuf, sizeof(valbuf), "value%d", i);
c1->set_value(c1, valbuf);
c2->set_value(c2, valbuf);
nc->set_value(nc, valbuf);
error_check(c1->insert(c1));
error_check(c2->insert(c2));
error_check(nc->insert(nc));
if (i % 5 == 0)
error_check(session->log_printf(
session, "Wrote %d records", i));
}
error_check(session->log_printf(
session, "Done. Wrote %d total records", i));
while (c1->next(c1) == 0) {
error_check(c1->get_key(c1, &key1));
error_check(c1->get_value(c1, &val1));
printf("Read key %s; value %s\n", key1, val1);
}
simple_walk_log(session);
printf("CLOSE\n");
error_check(conn->close(conn, NULL));
/*
* We want to close and reopen so that we recreate the cache
* by reading the data from disk, forcing decryption.
*/
printf("REOPEN and VERIFY encrypted data\n");
error_check(wiredtiger_open(home, NULL, WT_OPEN_CONFIG_GOOD, &conn));
error_check(conn->open_session(conn, NULL, NULL, &session));
/*
* Verify we can read the encrypted log after restart.
*/
simple_walk_log(session);
error_check(session->open_cursor(
session, "table:crypto1", NULL, NULL, &c1));
error_check(session->open_cursor(
session, "table:crypto2", NULL, NULL, &c2));
error_check(session->open_cursor(
session, "table:nocrypto", NULL, NULL, &nc));
/*
* Read the same data from each cursor. All should be identical.
*/
while (c1->next(c1) == 0) {
error_check(c2->next(c2));
error_check(nc->next(nc));
error_check(c1->get_key(c1, &key1));
error_check(c1->get_value(c1, &val1));
error_check(c2->get_key(c2, &key2));
error_check(c2->get_value(c2, &val2));
error_check(nc->get_key(nc, &key3));
error_check(nc->get_value(nc, &val3));
if (strcmp(key1, key2) != 0)
fprintf(stderr, "Key1 %s and Key2 %s do not match\n",
key1, key2);
if (strcmp(key1, key3) != 0)
fprintf(stderr, "Key1 %s and Key3 %s do not match\n",
key1, key3);
if (strcmp(key2, key3) != 0)
fprintf(stderr, "Key2 %s and Key3 %s do not match\n",
key2, key3);
if (strcmp(val1, val2) != 0)
fprintf(stderr, "Val1 %s and Val2 %s do not match\n",
val1, val2);
if (strcmp(val1, val3) != 0)
fprintf(stderr, "Val1 %s and Val3 %s do not match\n",
val1, val3);
if (strcmp(val2, val3) != 0)
fprintf(stderr, "Val2 %s and Val3 %s do not match\n",
val2, val3);
printf("Verified key %s; value %s\n", key1, val1);
}
error_check(conn->close(conn, NULL));
return (EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
WT_CONNECTION *conn;
home = example_setup(argc, argv);
/*! [Open a connection] */
error_check(wiredtiger_open(home, NULL,
"create,cache_size=5GB,log=(enabled,recover=on),statistics=(all)",
&conn));
/*! [Open a connection] */
connection_ops(conn);
/*
* The connection has been closed.
*/
#ifdef MIGHT_NOT_RUN
/*
* This example code gets run, and the compression libraries might not
* be installed, causing the open to fail. The documentation requires
* the code snippets, use #ifdef's to avoid running it.
*/
/*! [Configure lz4 extension] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/libwiredtiger_lz4.so]", &conn));
/*! [Configure lz4 extension] */
error_check(conn->close(conn, NULL));
/*! [Configure snappy extension] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/libwiredtiger_snappy.so]", &conn));
/*! [Configure snappy extension] */
error_check(conn->close(conn, NULL));
/*! [Configure zlib extension] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/libwiredtiger_zlib.so]", &conn));
/*! [Configure zlib extension] */
error_check(conn->close(conn, NULL));
/*! [Configure zlib extension with compression level] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/"
"libwiredtiger_zlib.so=[config=[compression_level=3]]]", &conn));
/*! [Configure zlib extension with compression level] */
error_check(conn->close(conn, NULL));
/*! [Configure zstd extension] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/libwiredtiger_zstd.so]", &conn));
/*! [Configure zstd extension] */
error_check(conn->close(conn, NULL));
/*! [Configure zstd extension with compression level] */
error_check(wiredtiger_open(home, NULL,
"create,"
"extensions=[/usr/local/lib/"
"libwiredtiger_zstd.so=[config=[compression_level=9]]]", &conn));
/*! [Configure zstd extension with compression level] */
error_check(conn->close(conn, NULL));
/*
* This example code gets run, and direct I/O might not be available,
* causing the open to fail. The documentation requires code snippets,
* use #ifdef's to avoid running it.
*/
/* Might Not Run: direct I/O may not be available. */
/*! [Configure direct_io for data files] */
error_check(wiredtiger_open(
home, NULL, "create,direct_io=[data]", &conn));
/*! [Configure direct_io for data files] */
error_check(conn->close(conn, NULL));
#endif
/*! [Configure file_extend] */
error_check(wiredtiger_open(
home, NULL, "create,file_extend=(data=16MB)", &conn));
/*! [Configure file_extend] */
error_check(conn->close(conn, NULL));
/*! [Eviction configuration] */
/*
* Configure eviction to begin at 90% full, and run until the cache
* is only 75% dirty.
*/
error_check(wiredtiger_open(home, NULL,
"create,eviction_trigger=90,eviction_dirty_target=75", &conn));
/*! [Eviction configuration] */
error_check(conn->close(conn, NULL));
/*! [Eviction worker configuration] */
/* Configure up to four eviction threads */
error_check(wiredtiger_open(home, NULL,
"create,eviction_trigger=90,eviction=(threads_max=4)", &conn));
/*! [Eviction worker configuration] */
error_check(conn->close(conn, NULL));
/*! [Statistics configuration] */
error_check(wiredtiger_open(
home, NULL, "create,statistics=(all)", &conn));
/*! [Statistics configuration] */
error_check(conn->close(conn, NULL));
/*! [Statistics logging] */
error_check(wiredtiger_open(
home, NULL, "create,statistics_log=(wait=30)", &conn));
/*! [Statistics logging] */
error_check(conn->close(conn, NULL));
#ifdef MIGHT_NOT_RUN
/*
* Don't run this code, statistics logging doesn't yet support tables.
*/
/*! [Statistics logging with a table] */
error_check(wiredtiger_open(home, NULL,
"create, statistics_log=("
"sources=(\"table:table1\",\"table:table2\"), wait=5)", &conn));
/*! [Statistics logging with a table] */
error_check(conn->close(conn, NULL));
/*
* Don't run this code, statistics logging doesn't yet support indexes.
*/
/*! [Statistics logging with a source type] */
error_check(wiredtiger_open(home, NULL,
"create, statistics_log=(sources=(\"index:\"), wait=5)", &conn));
/*! [Statistics logging with a source type] */
error_check(conn->close(conn, NULL));
/*
* Don't run this code, because memory checkers get very upset when we
* leak memory.
*/
error_check(wiredtiger_open(home, NULL, "create", &conn));
/*! [Connection close leaking memory] */
error_check(conn->close(conn, "leak_memory=true"));
/*! [Connection close leaking memory] */
#endif
/*! [Get the WiredTiger library version #1] */
printf("WiredTiger version %s\n", wiredtiger_version(NULL, NULL, NULL));
/*! [Get the WiredTiger library version #1] */
{
/*! [Get the WiredTiger library version #2] */
int major_v, minor_v, patch;
(void)wiredtiger_version(&major_v, &minor_v, &patch);
printf("WiredTiger version is %d, %d (patch %d)\n",
major_v, minor_v, patch);
/*! [Get the WiredTiger library version #2] */
}
{
/*! [Calculate a modify operation] */
WT_MODIFY mod[3];
int nmod = 3;
WT_ITEM prev, newv;
prev.data = "the quick brown fox jumped over the lazy dog. " \
"THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG. " \
"the quick brown fox jumped over the lazy dog. " \
"THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG. ";
prev.size = strlen(prev.data);
newv.data = "A quick brown fox jumped over the lazy dog. " \
"THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG. " \
"then a quick brown fox jumped over the lazy dog. " \
"THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG. " \
"then what?";
newv.size = strlen(newv.data);
error_check(wiredtiger_calc_modify(NULL, &prev, &newv, 20, mod, &nmod));
/*! [Calculate a modify operation] */
}
{
const char *buffer = "some string";
size_t len = strlen(buffer);
/*! [Checksum a buffer] */
uint32_t crc32c, (*func)(const void *, size_t);
func = wiredtiger_crc32c_func();
crc32c = func(buffer, len);
/*! [Checksum a buffer] */
(void)crc32c;
}
return (EXIT_SUCCESS);
}
