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|
/*-
* Copyright (c) 2014-2016 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
static int __curjoin_entries_in_range(WT_SESSION_IMPL *, WT_CURSOR_JOIN *,
WT_ITEM *, WT_CURSOR_JOIN_ITER *);
static int __curjoin_entry_in_range(WT_SESSION_IMPL *, WT_CURSOR_JOIN_ENTRY *,
WT_ITEM *, WT_CURSOR_JOIN_ITER *);
static int __curjoin_entry_member(WT_SESSION_IMPL *, WT_CURSOR_JOIN_ENTRY *,
WT_ITEM *, WT_CURSOR_JOIN_ITER *);
static int __curjoin_insert_endpoint(WT_SESSION_IMPL *,
WT_CURSOR_JOIN_ENTRY *, u_int, WT_CURSOR_JOIN_ENDPOINT **);
static int __curjoin_iter_close(WT_CURSOR_JOIN_ITER *);
static int __curjoin_iter_close_all(WT_CURSOR_JOIN_ITER *);
static bool __curjoin_iter_ready(WT_CURSOR_JOIN_ITER *);
static int __curjoin_iter_set_entry(WT_CURSOR_JOIN_ITER *, u_int);
static int __curjoin_pack_recno(WT_SESSION_IMPL *, uint64_t, uint8_t *,
size_t, WT_ITEM *);
static int __curjoin_split_key(WT_SESSION_IMPL *, WT_CURSOR_JOIN *, WT_ITEM *,
WT_CURSOR *, WT_CURSOR *, const char *, bool);
#define WT_CURJOIN_ITER_CONSUMED(iter) \
((iter)->entry_pos >= (iter)->entry_count)
/*
* __wt_curjoin_joined --
* Produce an error that this cursor is being used in a join call.
*/
int
__wt_curjoin_joined(WT_CURSOR *cursor)
{
WT_SESSION_IMPL *session;
session = (WT_SESSION_IMPL *)cursor->session;
__wt_errx(session, "cursor is being used in a join");
return (ENOTSUP);
}
/*
* __curjoin_iter_init --
* Initialize an iteration for the index managed by a join entry.
*/
static int
__curjoin_iter_init(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_CURSOR_JOIN_ITER **iterp)
{
WT_CURSOR_JOIN_ITER *iter;
*iterp = NULL;
WT_RET(__wt_calloc_one(session, iterp));
iter = *iterp;
iter->cjoin = cjoin;
iter->session = session;
cjoin->iter = iter;
WT_RET(__curjoin_iter_set_entry(iter, 0));
return (0);
}
/*
* __curjoin_iter_close --
* Close the iteration, release resources.
*/
static int
__curjoin_iter_close(WT_CURSOR_JOIN_ITER *iter)
{
WT_DECL_RET;
if (iter->cursor != NULL)
WT_TRET(iter->cursor->close(iter->cursor));
__wt_free(iter->session, iter);
return (ret);
}
/*
* __curjoin_iter_close_all --
* Free the iterator and all of its children recursively.
*/
static int
__curjoin_iter_close_all(WT_CURSOR_JOIN_ITER *iter)
{
WT_CURSOR_JOIN *parent;
WT_DECL_RET;
if (iter->child)
WT_TRET(__curjoin_iter_close_all(iter->child));
iter->child = NULL;
WT_ASSERT(iter->session, iter->cjoin->parent == NULL ||
iter->cjoin->parent->iter->child == iter);
if ((parent = iter->cjoin->parent) != NULL)
parent->iter->child = NULL;
iter->cjoin->iter = NULL;
WT_TRET(__curjoin_iter_close(iter));
return (ret);
}
/*
* __curjoin_iter_reset --
* Reset an iteration to the starting point.
*/
static int
__curjoin_iter_reset(WT_CURSOR_JOIN_ITER *iter)
{
if (iter->child != NULL)
WT_RET(__curjoin_iter_close_all(iter->child));
WT_RET(__curjoin_iter_set_entry(iter, 0));
iter->positioned = false;
return (0);
}
/*
* __curjoin_iter_ready --
* Check the positioned flag for all nested iterators.
*/
static bool
__curjoin_iter_ready(WT_CURSOR_JOIN_ITER *iter)
{
while (iter != NULL) {
if (!iter->positioned)
return (false);
iter = iter->child;
}
return (true);
}
/*
* __curjoin_iter_set_entry --
* Set the current entry for an iterator.
*/
static int
__curjoin_iter_set_entry(WT_CURSOR_JOIN_ITER *iter, u_int entry_pos)
{
WT_CURSOR *c, *to_dup;
WT_CURSOR_JOIN *cjoin, *topjoin;
WT_CURSOR_JOIN_ENTRY *entry;
WT_DECL_RET;
WT_SESSION_IMPL *session;
size_t size;
const char *raw_cfg[] = { WT_CONFIG_BASE(
iter->session, WT_SESSION_open_cursor), "raw", NULL };
const char *def_cfg[] = { WT_CONFIG_BASE(
iter->session, WT_SESSION_open_cursor), NULL };
const char **config;
char *uri;
session = iter->session;
cjoin = iter->cjoin;
uri = NULL;
entry = iter->entry = &cjoin->entries[entry_pos];
iter->positioned = false;
iter->entry_pos = entry_pos;
iter->end_pos = 0;
iter->is_equal = (entry->ends_next == 1 &&
WT_CURJOIN_END_RANGE(&entry->ends[0]) == WT_CURJOIN_END_EQ);
iter->end_skip = (entry->ends_next > 0 &&
WT_CURJOIN_END_RANGE(&entry->ends[0]) == WT_CURJOIN_END_GE) ? 1 : 0;
iter->end_count = WT_MIN(1, entry->ends_next);
if (F_ISSET(cjoin, WT_CURJOIN_DISJUNCTION)) {
iter->entry_count = cjoin->entries_next;
if (iter->is_equal)
iter->end_count = entry->ends_next;
} else
iter->entry_count = 1;
WT_ASSERT(iter->session, iter->entry_pos < iter->entry_count);
entry->stats.iterated = 0;
if (entry->subjoin == NULL) {
for (topjoin = iter->cjoin; topjoin->parent != NULL;
topjoin = topjoin->parent)
;
to_dup = entry->ends[0].cursor;
if (F_ISSET((WT_CURSOR *)topjoin, WT_CURSTD_RAW))
config = &raw_cfg[0];
else
config = &def_cfg[0];
size = strlen(to_dup->internal_uri) + 3;
WT_ERR(__wt_calloc(session, size, 1, &uri));
snprintf(uri, size, "%s()", to_dup->internal_uri);
if ((c = iter->cursor) == NULL || !WT_STREQ(c->uri, uri)) {
iter->cursor = NULL;
if (c != NULL)
WT_ERR(c->close(c));
WT_ERR(__wt_open_cursor(session, uri,
(WT_CURSOR *)topjoin, config, &iter->cursor));
}
WT_ERR(__wt_cursor_dup_position(to_dup, iter->cursor));
} else if (iter->cursor != NULL) {
WT_ERR(iter->cursor->close(iter->cursor));
iter->cursor = NULL;
}
err: __wt_free(session, uri);
return (ret);
}
/*
* __curjoin_iter_bump --
* Called to advance the iterator to the next endpoint, which may in turn
* advance to the next entry.
*/
static int
__curjoin_iter_bump(WT_CURSOR_JOIN_ITER *iter)
{
WT_CURSOR_JOIN_ENTRY *entry;
WT_SESSION_IMPL *session;
session = iter->session;
iter->positioned = false;
entry = iter->entry;
if (entry->subjoin == NULL && iter->is_equal &&
++iter->end_pos < iter->end_count) {
WT_RET(__wt_cursor_dup_position(
entry->ends[iter->end_pos].cursor, iter->cursor));
return (0);
}
iter->end_pos = iter->end_count = iter->end_skip = 0;
if (entry->subjoin != NULL && entry->subjoin->iter != NULL)
WT_RET(__curjoin_iter_close_all(entry->subjoin->iter));
if (++iter->entry_pos >= iter->entry_count) {
iter->entry = NULL;
return (0);
}
iter->entry = ++entry;
if (entry->subjoin != NULL) {
WT_RET(__curjoin_iter_init(session, entry->subjoin,
&iter->child));
return (0);
}
WT_RET(__curjoin_iter_set_entry(iter, iter->entry_pos));
return (0);
}
/*
* __curjoin_iter_next --
* Get the next item in an iteration.
*
*/
static int
__curjoin_iter_next(WT_CURSOR_JOIN_ITER *iter, WT_CURSOR *cursor)
{
WT_CURSOR_JOIN_ENTRY *entry;
WT_DECL_RET;
WT_SESSION_IMPL *session;
session = iter->session;
if (WT_CURJOIN_ITER_CONSUMED(iter))
return (WT_NOTFOUND);
again:
entry = iter->entry;
if (entry->subjoin != NULL) {
if (iter->child == NULL)
WT_RET(__curjoin_iter_init(session,
entry->subjoin, &iter->child));
ret = __curjoin_iter_next(iter->child, cursor);
if (ret == 0) {
/* The child did the work, we're done. */
iter->curkey = &cursor->key;
iter->positioned = true;
return (ret);
}
else if (ret == WT_NOTFOUND) {
WT_RET(__curjoin_iter_close_all(iter->child));
entry->subjoin->iter = NULL;
iter->child = NULL;
WT_RET(__curjoin_iter_bump(iter));
ret = 0;
}
} else if (iter->positioned) {
ret = iter->cursor->next(iter->cursor);
if (ret == WT_NOTFOUND) {
WT_RET(__curjoin_iter_bump(iter));
ret = 0;
} else
WT_RET(ret);
} else
iter->positioned = true;
if (WT_CURJOIN_ITER_CONSUMED(iter))
return (WT_NOTFOUND);
if (!__curjoin_iter_ready(iter))
goto again;
WT_RET(ret);
/*
* Set our key to the primary key, we'll also need this
* to check membership.
*/
WT_RET(__curjoin_split_key(iter->session, iter->cjoin, &iter->idxkey,
cursor, iter->cursor, iter->entry->repack_format,
iter->entry->index != NULL));
iter->curkey = &cursor->key;
iter->entry->stats.iterated++;
return (0);
}
/*
* __curjoin_close --
* WT_CURSOR::close for join cursors.
*/
static int
__curjoin_close(WT_CURSOR *cursor)
{
WT_CURSOR_JOIN *cjoin;
WT_CURSOR_JOIN_ENDPOINT *end;
WT_CURSOR_JOIN_ENTRY *entry;
WT_DECL_RET;
WT_SESSION_IMPL *session;
u_int i;
cjoin = (WT_CURSOR_JOIN *)cursor;
JOINABLE_CURSOR_API_CALL(cursor, session, close, NULL);
__wt_schema_release_table(session, cjoin->table);
/* These are owned by the table */
cursor->internal_uri = NULL;
cursor->key_format = NULL;
if (cjoin->projection != NULL) {
__wt_free(session, cjoin->projection);
__wt_free(session, cursor->value_format);
}
for (entry = cjoin->entries, i = 0; i < cjoin->entries_next;
entry++, i++) {
if (entry->subjoin != NULL) {
F_CLR(&entry->subjoin->iface, WT_CURSTD_JOINED);
entry->subjoin->parent = NULL;
}
if (entry->main != NULL)
WT_TRET(entry->main->close(entry->main));
if (F_ISSET(entry, WT_CURJOIN_ENTRY_OWN_BLOOM))
WT_TRET(__wt_bloom_close(entry->bloom));
for (end = &entry->ends[0];
end < &entry->ends[entry->ends_next]; end++) {
F_CLR(end->cursor, WT_CURSTD_JOINED);
if (F_ISSET(end, WT_CURJOIN_END_OWN_CURSOR))
WT_TRET(end->cursor->close(end->cursor));
}
__wt_free(session, entry->ends);
__wt_free(session, entry->repack_format);
}
if (cjoin->iter != NULL)
WT_TRET(__curjoin_iter_close_all(cjoin->iter));
if (cjoin->main != NULL)
WT_TRET(cjoin->main->close(cjoin->main));
__wt_free(session, cjoin->entries);
WT_TRET(__wt_cursor_close(cursor));
err: API_END_RET(session, ret);
}
/*
* __curjoin_endpoint_init_key --
* Set the key in the reference endpoint.
*/
static int
__curjoin_endpoint_init_key(WT_SESSION_IMPL *session,
WT_CURSOR_JOIN_ENTRY *entry, WT_CURSOR_JOIN_ENDPOINT *endpoint)
{
WT_CURSOR *cursor;
WT_CURSOR_INDEX *cindex;
WT_ITEM *k;
uint64_t r;
if ((cursor = endpoint->cursor) != NULL) {
if (entry->index != NULL) {
/* Extract and save the index's logical key. */
cindex = (WT_CURSOR_INDEX *)endpoint->cursor;
WT_RET(__wt_struct_repack(session,
cindex->child->key_format,
(entry->repack_format != NULL ?
entry->repack_format : cindex->iface.key_format),
&cindex->child->key, &endpoint->key));
} else {
k = &((WT_CURSOR_TABLE *)cursor)->cg_cursors[0]->key;
if (WT_CURSOR_RECNO(cursor)) {
r = *(uint64_t *)k->data;
WT_RET(__curjoin_pack_recno(session, r,
endpoint->recno_buf,
sizeof(endpoint->recno_buf),
&endpoint->key));
} else
endpoint->key = *k;
}
}
return (0);
}
/*
* __curjoin_entries_in_range --
* Check if a key is in the range specified by the remaining entries,
* returning WT_NOTFOUND if not.
*/
static int
__curjoin_entries_in_range(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_ITEM *curkey, WT_CURSOR_JOIN_ITER *iterarg)
{
WT_CURSOR_JOIN_ENTRY *entry;
WT_CURSOR_JOIN_ITER *iter;
WT_DECL_RET;
u_int pos;
int fastret, slowret;
iter = iterarg;
if (F_ISSET(cjoin, WT_CURJOIN_DISJUNCTION)) {
fastret = 0;
slowret = WT_NOTFOUND;
} else {
fastret = WT_NOTFOUND;
slowret = 0;
}
pos = iter == NULL ? 0 : iter->entry_pos;
for (entry = &cjoin->entries[pos]; pos < cjoin->entries_next;
entry++, pos++) {
ret = __curjoin_entry_member(session, entry, curkey, iter);
if (ret == fastret)
return (fastret);
if (ret != slowret)
break;
iter = NULL;
}
return (ret == 0 ? slowret : ret);
}
/*
* __curjoin_entry_in_range --
* Check if a key is in the range specified by the entry, returning
* WT_NOTFOUND if not.
*/
static int
__curjoin_entry_in_range(WT_SESSION_IMPL *session, WT_CURSOR_JOIN_ENTRY *entry,
WT_ITEM *curkey, WT_CURSOR_JOIN_ITER *iter)
{
WT_COLLATOR *collator;
WT_CURSOR_JOIN_ENDPOINT *end, *endmax;
bool disjunction, passed;
u_int pos;
int cmp;
collator = (entry->index != NULL) ? entry->index->collator : NULL;
endmax = &entry->ends[entry->ends_next];
disjunction = F_ISSET(entry, WT_CURJOIN_ENTRY_DISJUNCTION);
passed = false;
/*
* The iterator may have already satisfied some endpoint conditions.
* If so and we're a disjunction, we're done. If so and we're a
* conjunction, we can start past the satisfied conditions.
*/
if (iter == NULL)
pos = 0;
else {
if (disjunction && iter->end_skip)
return (0);
pos = iter->end_pos + iter->end_skip;
}
for (end = &entry->ends[pos]; end < endmax; end++) {
WT_RET(__wt_compare(session, collator, curkey, &end->key,
&cmp));
switch (WT_CURJOIN_END_RANGE(end)) {
case WT_CURJOIN_END_EQ:
passed = (cmp == 0);
break;
case WT_CURJOIN_END_GT | WT_CURJOIN_END_EQ:
passed = (cmp >= 0);
WT_ASSERT(session, iter == NULL);
break;
case WT_CURJOIN_END_GT:
passed = (cmp > 0);
if (passed && iter != NULL && pos == 0)
iter->end_skip = 1;
break;
case WT_CURJOIN_END_LT | WT_CURJOIN_END_EQ:
passed = (cmp <= 0);
break;
case WT_CURJOIN_END_LT:
passed = (cmp < 0);
break;
default:
WT_RET(__wt_illegal_value(session, NULL));
break;
}
if (!passed) {
if (iter != NULL &&
(iter->is_equal ||
F_ISSET(end, WT_CURJOIN_END_LT))) {
WT_RET(__curjoin_iter_bump(iter));
return (WT_NOTFOUND);
}
if (!disjunction)
return (WT_NOTFOUND);
iter = NULL;
} else if (disjunction)
break;
}
if (disjunction && end == endmax)
return (WT_NOTFOUND);
else
return (0);
}
typedef struct {
WT_CURSOR iface;
WT_CURSOR_JOIN_ENTRY *entry;
bool ismember;
} WT_CURJOIN_EXTRACTOR;
/*
* __curjoin_extract_insert --
* Handle a key produced by a custom extractor.
*/
static int
__curjoin_extract_insert(WT_CURSOR *cursor) {
WT_CURJOIN_EXTRACTOR *cextract;
WT_DECL_RET;
WT_ITEM ikey;
WT_SESSION_IMPL *session;
cextract = (WT_CURJOIN_EXTRACTOR *)cursor;
/*
* This insert method may be called multiple times during a single
* extraction. If we already have a definitive answer to the
* membership question, exit early.
*/
if (cextract->ismember)
return (0);
session = (WT_SESSION_IMPL *)cursor->session;
WT_ITEM_SET(ikey, cursor->key);
/*
* We appended a padding byte to the key to avoid rewriting the last
* column. Strip that away here.
*/
WT_ASSERT(session, ikey.size > 0);
--ikey.size;
ret = __curjoin_entry_in_range(session, cextract->entry, &ikey, false);
if (ret == WT_NOTFOUND)
ret = 0;
else if (ret == 0)
cextract->ismember = true;
return (ret);
}
/*
* __curjoin_entry_member --
* Do a membership check for a particular index that was joined,
* if not a member, returns WT_NOTFOUND.
*/
static int
__curjoin_entry_member(WT_SESSION_IMPL *session, WT_CURSOR_JOIN_ENTRY *entry,
WT_ITEM *key, WT_CURSOR_JOIN_ITER *iter)
{
WT_CURJOIN_EXTRACTOR extract_cursor;
WT_CURSOR *c;
WT_CURSOR_STATIC_INIT(iface,
__wt_cursor_get_key, /* get-key */
__wt_cursor_get_value, /* get-value */
__wt_cursor_set_key, /* set-key */
__wt_cursor_set_value, /* set-value */
__wt_cursor_compare_notsup, /* compare */
__wt_cursor_equals_notsup, /* equals */
__wt_cursor_notsup, /* next */
__wt_cursor_notsup, /* prev */
__wt_cursor_notsup, /* reset */
__wt_cursor_notsup, /* search */
__wt_cursor_search_near_notsup, /* search-near */
__curjoin_extract_insert, /* insert */
__wt_cursor_notsup, /* update */
__wt_cursor_notsup, /* remove */
__wt_cursor_reconfigure_notsup, /* reconfigure */
__wt_cursor_notsup); /* close */
WT_DECL_RET;
WT_INDEX *idx;
WT_ITEM v;
bool bloom_found;
if (entry->subjoin == NULL && iter != NULL &&
(iter->end_pos + iter->end_skip >= entry->ends_next ||
(iter->end_skip > 0 &&
F_ISSET(entry, WT_CURJOIN_ENTRY_DISJUNCTION))))
return (0); /* no checks to make */
entry->stats.membership_check++;
bloom_found = false;
if (entry->bloom != NULL) {
/*
* If the item is not in the Bloom filter, we return
* immediately, otherwise, we still need to check the long
* way, since it may be a false positive.
*
* If we don't own the Bloom filter, we must be sharing one
* in a previous entry. So the shared filter has already
* been checked and passed, we don't need to check it again.
* We'll still need to check the long way.
*/
if (F_ISSET(entry, WT_CURJOIN_ENTRY_OWN_BLOOM))
WT_ERR(__wt_bloom_inmem_get(entry->bloom, key));
bloom_found = true;
}
if (entry->subjoin != NULL) {
WT_ASSERT(session,
iter == NULL || entry->subjoin == iter->child->cjoin);
ret = __curjoin_entries_in_range(session, entry->subjoin,
key, iter == NULL ? NULL : iter->child);
if (iter != NULL &&
WT_CURJOIN_ITER_CONSUMED(iter->child)) {
WT_ERR(__curjoin_iter_bump(iter));
ret = WT_NOTFOUND;
}
return (ret);
}
if (entry->index != NULL) {
/*
* If this entry is used by the iterator, then we already
* have the index key, and we won't have to do any
* extraction either.
*/
if (iter != NULL && entry == iter->entry)
WT_ITEM_SET(v, iter->idxkey);
else {
memset(&v, 0, sizeof(v)); /* Keep lint quiet. */
c = entry->main;
c->set_key(c, key);
entry->stats.main_access++;
if ((ret = c->search(c)) == 0)
ret = c->get_value(c, &v);
else if (ret == WT_NOTFOUND)
WT_ERR_MSG(session, WT_ERROR,
"main table for join is missing entry");
WT_TRET(c->reset(c));
WT_ERR(ret);
}
} else
WT_ITEM_SET(v, *key);
if ((idx = entry->index) != NULL && idx->extractor != NULL &&
(iter == NULL || entry != iter->entry)) {
WT_CLEAR(extract_cursor);
extract_cursor.iface = iface;
extract_cursor.iface.session = &session->iface;
extract_cursor.iface.key_format = idx->exkey_format;
extract_cursor.ismember = false;
extract_cursor.entry = entry;
WT_ERR(idx->extractor->extract(idx->extractor,
&session->iface, key, &v, &extract_cursor.iface));
if (!extract_cursor.ismember)
WT_ERR(WT_NOTFOUND);
} else
WT_ERR(__curjoin_entry_in_range(session, entry, &v, iter));
if (0) {
err: if (ret == WT_NOTFOUND && bloom_found)
entry->stats.bloom_false_positive++;
}
return (ret);
}
/*
* __curjoin_get_key --
* WT_CURSOR->get_key for join cursors.
*/
static int
__curjoin_get_key(WT_CURSOR *cursor, ...)
{
WT_CURSOR_JOIN *cjoin;
WT_DECL_RET;
WT_SESSION_IMPL *session;
va_list ap;
cjoin = (WT_CURSOR_JOIN *)cursor;
va_start(ap, cursor);
JOINABLE_CURSOR_API_CALL(cursor, session, get_key, NULL);
if (!F_ISSET(cjoin, WT_CURJOIN_INITIALIZED) ||
!cjoin->iter->positioned)
WT_ERR_MSG(session, EINVAL,
"join cursor must be advanced with next()");
WT_ERR(__wt_cursor_get_keyv(cursor, cursor->flags, ap));
err: va_end(ap);
API_END_RET(session, ret);
}
/*
* __curjoin_get_value --
* WT_CURSOR->get_value for join cursors.
*/
static int
__curjoin_get_value(WT_CURSOR *cursor, ...)
{
WT_CURSOR_JOIN *cjoin;
WT_DECL_RET;
WT_SESSION_IMPL *session;
va_list ap;
cjoin = (WT_CURSOR_JOIN *)cursor;
va_start(ap, cursor);
JOINABLE_CURSOR_API_CALL(cursor, session, get_value, NULL);
if (!F_ISSET(cjoin, WT_CURJOIN_INITIALIZED) ||
!cjoin->iter->positioned)
WT_ERR_MSG(session, EINVAL,
"join cursor must be advanced with next()");
WT_ERR(__wt_curtable_get_valuev(cjoin->main, ap));
err: va_end(ap);
API_END_RET(session, ret);
}
/*
* __curjoin_init_bloom --
* Populate Bloom filters
*/
static int
__curjoin_init_bloom(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_CURSOR_JOIN_ENTRY *entry, WT_BLOOM *bloom)
{
WT_COLLATOR *collator;
WT_CURSOR *c;
WT_CURSOR_JOIN_ENDPOINT *end, *endmax;
WT_DECL_ITEM(uribuf);
WT_DECL_RET;
WT_ITEM curkey, curvalue;
size_t size;
u_int skip;
int cmp;
const char *uri;
const char *raw_cfg[] = { WT_CONFIG_BASE(
session, WT_SESSION_open_cursor), "raw", NULL };
c = NULL;
skip = 0;
if (entry->index != NULL)
/*
* Open the raw index. We're avoiding any references
* to the main table, they may be expensive.
*/
uri = entry->index->source;
else {
/*
* For joins on the main table, we just need the primary
* key for comparison, we don't need any values.
*/
size = strlen(cjoin->table->name) + 3;
WT_ERR(__wt_scr_alloc(session, size, &uribuf));
WT_ERR(__wt_buf_fmt(session, uribuf, "%s()",
cjoin->table->name));
uri = uribuf->data;
}
WT_ERR(__wt_open_cursor(session, uri, &cjoin->iface, raw_cfg, &c));
/* Initially position the cursor if necessary. */
endmax = &entry->ends[entry->ends_next];
if ((end = &entry->ends[0]) < endmax) {
if (F_ISSET(end, WT_CURJOIN_END_GT) ||
WT_CURJOIN_END_RANGE(end) == WT_CURJOIN_END_EQ) {
WT_ERR(__wt_cursor_dup_position(end->cursor, c));
if (WT_CURJOIN_END_RANGE(end) == WT_CURJOIN_END_GE)
skip = 1;
} else if (F_ISSET(end, WT_CURJOIN_END_LT)) {
if ((ret = c->next(c)) == WT_NOTFOUND)
goto done;
WT_ERR(ret);
} else
WT_ERR(__wt_illegal_value(session, NULL));
}
collator = (entry->index == NULL) ? NULL : entry->index->collator;
while (ret == 0) {
WT_ERR(c->get_key(c, &curkey));
entry->stats.iterated++;
if (entry->index != NULL) {
/*
* Repack so it's comparable to the
* reference endpoints.
*/
WT_ERR(__wt_struct_repack(session,
c->key_format,
(entry->repack_format != NULL ?
entry->repack_format : entry->index->idxkey_format),
&c->key, &curkey));
}
for (end = &entry->ends[skip]; end < endmax; end++) {
WT_ERR(__wt_compare(session, collator, &curkey,
&end->key, &cmp));
if (F_ISSET(entry, WT_CURJOIN_ENTRY_DISJUNCTION)) {
/* if condition satisfied, insert immediately */
switch (WT_CURJOIN_END_RANGE(end)) {
case WT_CURJOIN_END_EQ:
if (cmp == 0)
goto insert;
break;
case WT_CURJOIN_END_GT:
if (cmp > 0) {
/* skip this check next time */
skip = entry->ends_next;
goto insert;
}
break;
case WT_CURJOIN_END_GE:
if (cmp >= 0)
goto insert;
break;
case WT_CURJOIN_END_LT:
if (cmp < 0)
goto insert;
break;
case WT_CURJOIN_END_LE:
if (cmp <= 0)
goto insert;
break;
}
} else if (!F_ISSET(end, WT_CURJOIN_END_LT)) {
if (cmp < 0 || (cmp == 0 &&
!F_ISSET(end, WT_CURJOIN_END_EQ)))
goto advance;
if (cmp > 0) {
if (F_ISSET(end, WT_CURJOIN_END_GT))
skip = 1;
else
goto done;
}
} else {
if (cmp > 0 || (cmp == 0 &&
!F_ISSET(end, WT_CURJOIN_END_EQ)))
goto done;
}
}
/*
* Either it's a disjunction that hasn't satisfied any
* condition, or it's a conjunction that has satisfied all
* conditions.
*/
if (F_ISSET(entry, WT_CURJOIN_ENTRY_DISJUNCTION))
goto advance;
insert:
if (entry->index != NULL) {
curvalue.data =
(unsigned char *)curkey.data + curkey.size;
WT_ASSERT(session, c->key.size > curkey.size);
curvalue.size = c->key.size - curkey.size;
}
else
WT_ERR(c->get_key(c, &curvalue));
WT_ERR(__wt_bloom_insert(bloom, &curvalue));
entry->stats.bloom_insert++;
advance:
if ((ret = c->next(c)) == WT_NOTFOUND)
break;
}
done:
WT_ERR_NOTFOUND_OK(ret);
err: if (c != NULL)
WT_TRET(c->close(c));
__wt_scr_free(session, &uribuf);
return (ret);
}
/*
* __curjoin_init_next --
* Initialize the cursor join when the next function is first called.
*/
static int
__curjoin_init_next(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
bool iterable)
{
WT_BLOOM *bloom;
WT_CURSOR *origcur;
WT_CURSOR_JOIN_ENDPOINT *end;
WT_CURSOR_JOIN_ENTRY *je, *jeend, *je2;
WT_DECL_RET;
size_t size;
uint32_t f, k;
char *mainbuf;
const char *def_cfg[] = { WT_CONFIG_BASE(
session, WT_SESSION_open_cursor), NULL };
const char *raw_cfg[] = { WT_CONFIG_BASE(
session, WT_SESSION_open_cursor), "raw", NULL };
const char **config, *proj, *urimain;
mainbuf = NULL;
if (cjoin->entries_next == 0)
WT_RET_MSG(session, EINVAL,
"join cursor has not yet been joined with any other "
"cursors");
if (F_ISSET((WT_CURSOR *)cjoin, WT_CURSTD_RAW))
config = &raw_cfg[0];
else
config = &def_cfg[0];
urimain = cjoin->table->name;
if ((proj = cjoin->projection) != NULL) {
size = strlen(urimain) + strlen(proj) + 1;
WT_ERR(__wt_calloc(session, size, 1, &mainbuf));
snprintf(mainbuf, size, "%s%s", urimain, proj);
urimain = mainbuf;
}
WT_ERR(__wt_open_cursor(session, urimain, (WT_CURSOR *)cjoin, config,
&cjoin->main));
jeend = &cjoin->entries[cjoin->entries_next];
for (je = cjoin->entries; je < jeend; je++) {
if (je->subjoin != NULL) {
WT_ERR(__curjoin_init_next(session, je->subjoin,
iterable));
continue;
}
__wt_stat_join_init_single(&je->stats);
/*
* For a single compare=le/lt endpoint in any entry that may
* be iterated, construct a companion compare=ge endpoint
* that will actually be iterated.
*/
if (iterable && je->ends_next == 1 &&
F_ISSET(&je->ends[0], WT_CURJOIN_END_LT)) {
origcur = je->ends[0].cursor;
WT_ERR(__curjoin_insert_endpoint(session, je, 0, &end));
WT_ERR(__wt_open_cursor(session, origcur->uri,
(WT_CURSOR *)cjoin,
F_ISSET(origcur, WT_CURSTD_RAW) ? raw_cfg : def_cfg,
&end->cursor));
end->flags = WT_CURJOIN_END_GT | WT_CURJOIN_END_EQ |
WT_CURJOIN_END_OWN_CURSOR;
WT_ERR(end->cursor->next(end->cursor));
F_CLR(je, WT_CURJOIN_ENTRY_DISJUNCTION);
}
for (end = &je->ends[0]; end < &je->ends[je->ends_next];
end++)
WT_ERR(__curjoin_endpoint_init_key(session, je, end));
/*
* Do any needed Bloom filter initialization. Ignore Bloom
* filters for entries that will be iterated. They won't
* help since these entries either don't need an inclusion
* check or are doing any needed check during the iteration.
*/
if (!iterable && F_ISSET(je, WT_CURJOIN_ENTRY_BLOOM)) {
if (session->txn.isolation == WT_ISO_READ_UNCOMMITTED)
WT_ERR_MSG(session, EINVAL,
"join cursors with Bloom filters cannot be "
"used with read-uncommitted isolation");
if (je->bloom == NULL) {
/*
* Look for compatible filters to be shared,
* pick compatible numbers for bit counts
* and number of hashes.
*/
f = je->bloom_bit_count;
k = je->bloom_hash_count;
for (je2 = je + 1; je2 < jeend; je2++)
if (F_ISSET(je2,
WT_CURJOIN_ENTRY_BLOOM) &&
je2->count == je->count) {
f = WT_MAX(
je2->bloom_bit_count, f);
k = WT_MAX(
je2->bloom_hash_count, k);
}
je->bloom_bit_count = f;
je->bloom_hash_count = k;
WT_ERR(__wt_bloom_create(session, NULL,
NULL, je->count, f, k, &je->bloom));
F_SET(je, WT_CURJOIN_ENTRY_OWN_BLOOM);
WT_ERR(__curjoin_init_bloom(session, cjoin,
je, je->bloom));
/*
* Share the Bloom filter, making all
* config info consistent.
*/
for (je2 = je + 1; je2 < jeend; je2++)
if (F_ISSET(je2,
WT_CURJOIN_ENTRY_BLOOM) &&
je2->count == je->count) {
WT_ASSERT(session,
je2->bloom == NULL);
je2->bloom = je->bloom;
je2->bloom_bit_count = f;
je2->bloom_hash_count = k;
}
} else {
/*
* Create a temporary filter that we'll
* merge into the shared one. The Bloom
* parameters of the two filters must match.
*/
WT_ERR(__wt_bloom_create(session, NULL,
NULL, je->count, je->bloom_bit_count,
je->bloom_hash_count, &bloom));
WT_ERR(__curjoin_init_bloom(session, cjoin,
je, bloom));
WT_ERR(__wt_bloom_intersection(je->bloom,
bloom));
WT_ERR(__wt_bloom_close(bloom));
}
}
if (!F_ISSET(cjoin, WT_CURJOIN_DISJUNCTION))
iterable = false;
}
F_SET(cjoin, WT_CURJOIN_INITIALIZED);
err: __wt_free(session, mainbuf);
return (ret);
}
/*
* __curjoin_insert_endpoint --
* Insert a new entry into the endpoint array for the join entry.
*/
static int
__curjoin_insert_endpoint(WT_SESSION_IMPL *session, WT_CURSOR_JOIN_ENTRY *entry,
u_int pos, WT_CURSOR_JOIN_ENDPOINT **newendp)
{
WT_CURSOR_JOIN_ENDPOINT *newend;
WT_RET(__wt_realloc_def(session, &entry->ends_allocated,
entry->ends_next + 1, &entry->ends));
newend = &entry->ends[pos];
memmove(newend + 1, newend,
(entry->ends_next - pos) * sizeof(WT_CURSOR_JOIN_ENDPOINT));
memset(newend, 0, sizeof(WT_CURSOR_JOIN_ENDPOINT));
entry->ends_next++;
*newendp = newend;
return (0);
}
/*
* __curjoin_next --
* WT_CURSOR::next for join cursors.
*/
static int
__curjoin_next(WT_CURSOR *cursor)
{
WT_CURSOR *c;
WT_CURSOR_JOIN *cjoin;
WT_CURSOR_JOIN_ITER *iter;
WT_DECL_RET;
WT_SESSION_IMPL *session;
int tret;
cjoin = (WT_CURSOR_JOIN *)cursor;
JOINABLE_CURSOR_API_CALL(cursor, session, next, NULL);
if (F_ISSET(cjoin, WT_CURJOIN_ERROR))
WT_ERR_MSG(session, WT_ERROR,
"join cursor encountered previous error");
if (!F_ISSET(cjoin, WT_CURJOIN_INITIALIZED))
WT_ERR(__curjoin_init_next(session, cjoin, true));
if (cjoin->iter == NULL)
WT_ERR(__curjoin_iter_init(session, cjoin, &cjoin->iter));
iter = cjoin->iter;
F_CLR(cursor, WT_CURSTD_KEY_SET | WT_CURSTD_VALUE_SET);
while ((ret = __curjoin_iter_next(iter, cursor)) == 0) {
if ((ret = __curjoin_entries_in_range(session, cjoin,
iter->curkey, iter)) != WT_NOTFOUND)
break;
}
iter->positioned = (ret == 0);
if (ret != 0 && ret != WT_NOTFOUND)
WT_ERR(ret);
if (ret == 0) {
/*
* Position the 'main' cursor, this will be used to retrieve
* values from the cursor join. The key we have is raw, but
* the main cursor may not be raw.
*/
c = cjoin->main;
__wt_cursor_set_raw_key(c, iter->curkey);
/*
* A failed search is not expected, convert WT_NOTFOUND into a
* generic error.
*/
iter->entry->stats.main_access++;
if ((ret = c->search(c)) == WT_NOTFOUND)
ret = WT_ERROR;
WT_ERR(ret);
F_SET(cursor, WT_CURSTD_KEY_INT | WT_CURSTD_VALUE_INT);
} else if (ret == WT_NOTFOUND &&
(tret = __curjoin_iter_close_all(iter)) != 0)
WT_ERR(tret);
if (0) {
err: F_SET(cjoin, WT_CURJOIN_ERROR);
}
API_END_RET(session, ret);
}
/*
* __curjoin_open_main --
* For the given index, open the main file with a projection
* that is the index keys.
*/
static int
__curjoin_open_main(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_CURSOR_JOIN_ENTRY *entry)
{
WT_DECL_RET;
WT_INDEX *idx;
size_t len, newsize;
char *main_uri, *newformat;
const char *raw_cfg[] = { WT_CONFIG_BASE(
session, WT_SESSION_open_cursor), "raw", NULL };
main_uri = NULL;
idx = entry->index;
newsize = strlen(cjoin->table->name) + idx->colconf.len + 1;
WT_ERR(__wt_calloc(session, 1, newsize, &main_uri));
snprintf(main_uri, newsize, "%s%.*s",
cjoin->table->name, (int)idx->colconf.len, idx->colconf.str);
WT_ERR(__wt_open_cursor(session, main_uri,
(WT_CURSOR *)cjoin, raw_cfg, &entry->main));
if (idx->extractor == NULL) {
/*
* Add no-op padding so trailing 'u' formats are not
* transformed to 'U'. This matches what happens in
* the index. We don't do this when we have an
* extractor, extractors already use the padding
* byte trick.
*/
len = strlen(entry->main->value_format) + 3;
WT_ERR(__wt_calloc(session, len, 1, &newformat));
snprintf(newformat, len, "%s0x", entry->main->value_format);
__wt_free(session, entry->main->value_format);
entry->main->value_format = newformat;
}
err: __wt_free(session, main_uri);
return (ret);
}
/*
* __curjoin_pack_recno --
* Pack the given recno into a buffer; prepare an item referencing it.
*
*/
static int
__curjoin_pack_recno(WT_SESSION_IMPL *session, uint64_t r, uint8_t *buf,
size_t bufsize, WT_ITEM *item)
{
WT_SESSION *wtsession;
size_t sz;
wtsession = (WT_SESSION *)session;
WT_RET(wiredtiger_struct_size(wtsession, &sz, "r", r));
WT_ASSERT(session, sz < bufsize);
WT_RET(wiredtiger_struct_pack(wtsession, buf, bufsize, "r", r));
item->size = sz;
item->data = buf;
return (0);
}
/*
* __curjoin_reset --
* WT_CURSOR::reset for join cursors.
*/
static int
__curjoin_reset(WT_CURSOR *cursor)
{
WT_CURSOR_JOIN *cjoin;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cjoin = (WT_CURSOR_JOIN *)cursor;
JOINABLE_CURSOR_API_CALL(cursor, session, reset, NULL);
if (cjoin->iter != NULL)
WT_ERR(__curjoin_iter_reset(cjoin->iter));
err: API_END_RET(session, ret);
}
/*
* __curjoin_split_key --
* Copy the primary key from a cursor (either main table or index)
* to another cursor. When copying from an index file, the index
* key is also returned.
*
*/
static int
__curjoin_split_key(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_ITEM *idxkey, WT_CURSOR *tocur, WT_CURSOR *fromcur,
const char *repack_fmt, bool isindex)
{
WT_CURSOR *firstcg_cur;
WT_CURSOR_INDEX *cindex;
WT_ITEM *keyp;
const uint8_t *p;
if (isindex) {
cindex = ((WT_CURSOR_INDEX *)fromcur);
/*
* Repack tells us where the index key ends; advance past
* that to get where the raw primary key starts.
*/
WT_RET(__wt_struct_repack(session, cindex->child->key_format,
repack_fmt != NULL ? repack_fmt : cindex->iface.key_format,
&cindex->child->key, idxkey));
WT_ASSERT(session, cindex->child->key.size > idxkey->size);
tocur->key.data = (uint8_t *)idxkey->data + idxkey->size;
tocur->key.size = cindex->child->key.size - idxkey->size;
if (WT_CURSOR_RECNO(tocur)) {
p = (const uint8_t *)tocur->key.data;
WT_RET(__wt_vunpack_uint(&p, tocur->key.size,
&tocur->recno));
} else
tocur->recno = 0;
} else {
firstcg_cur = ((WT_CURSOR_TABLE *)fromcur)->cg_cursors[0];
keyp = &firstcg_cur->key;
if (WT_CURSOR_RECNO(tocur)) {
WT_ASSERT(session, keyp->size == sizeof(uint64_t));
tocur->recno = *(uint64_t *)keyp->data;
WT_RET(__curjoin_pack_recno(session, tocur->recno,
cjoin->recno_buf, sizeof(cjoin->recno_buf),
&tocur->key));
} else {
WT_ITEM_SET(tocur->key, *keyp);
tocur->recno = 0;
}
idxkey->data = NULL;
idxkey->size = 0;
}
return (0);
}
/*
* __wt_curjoin_open --
* Initialize a join cursor.
*
* Join cursors are read-only.
*/
int
__wt_curjoin_open(WT_SESSION_IMPL *session,
const char *uri, WT_CURSOR *owner, const char *cfg[], WT_CURSOR **cursorp)
{
WT_CURSOR_STATIC_INIT(iface,
__curjoin_get_key, /* get-key */
__curjoin_get_value, /* get-value */
__wt_cursor_set_key_notsup, /* set-key */
__wt_cursor_set_value_notsup, /* set-value */
__wt_cursor_compare_notsup, /* compare */
__wt_cursor_equals_notsup, /* equals */
__curjoin_next, /* next */
__wt_cursor_notsup, /* prev */
__curjoin_reset, /* reset */
__wt_cursor_notsup, /* search */
__wt_cursor_search_near_notsup, /* search-near */
__wt_cursor_notsup, /* insert */
__wt_cursor_notsup, /* update */
__wt_cursor_notsup, /* remove */
__wt_cursor_reconfigure_notsup, /* reconfigure */
__curjoin_close); /* close */
WT_CURSOR *cursor;
WT_CURSOR_JOIN *cjoin;
WT_DECL_ITEM(tmp);
WT_DECL_RET;
WT_TABLE *table;
size_t size;
const char *tablename, *columns;
WT_STATIC_ASSERT(offsetof(WT_CURSOR_JOIN, iface) == 0);
if (!WT_PREFIX_SKIP(uri, "join:"))
return (EINVAL);
tablename = uri;
if (!WT_PREFIX_SKIP(tablename, "table:"))
return (EINVAL);
columns = strchr(tablename, '(');
if (columns == NULL)
size = strlen(tablename);
else
size = WT_PTRDIFF(columns, tablename);
WT_RET(__wt_schema_get_table(session, tablename, size, 0, &table));
WT_RET(__wt_calloc_one(session, &cjoin));
cursor = &cjoin->iface;
*cursor = iface;
cursor->session = &session->iface;
cursor->internal_uri = table->name;
cursor->key_format = table->key_format;
cursor->value_format = table->value_format;
cjoin->table = table;
/* Handle projections. */
WT_ERR(__wt_scr_alloc(session, 0, &tmp));
if (columns != NULL) {
WT_ERR(__wt_struct_reformat(session, table,
columns, strlen(columns), NULL, 1, tmp));
WT_ERR(__wt_strndup(
session, tmp->data, tmp->size, &cursor->value_format));
WT_ERR(__wt_strdup(session, columns, &cjoin->projection));
}
if (owner != NULL)
WT_ERR(EINVAL);
WT_ERR(__wt_cursor_init(cursor, uri, owner, cfg, cursorp));
if (0) {
err: WT_TRET(__curjoin_close(cursor));
*cursorp = NULL;
}
__wt_scr_free(session, &tmp);
return (ret);
}
/*
* __wt_curjoin_join --
* Add a new join to a join cursor.
*/
int
__wt_curjoin_join(WT_SESSION_IMPL *session, WT_CURSOR_JOIN *cjoin,
WT_INDEX *idx, WT_CURSOR *ref_cursor, uint8_t flags, uint8_t range,
uint64_t count, uint32_t bloom_bit_count, uint32_t bloom_hash_count)
{
WT_CURSOR_INDEX *cindex;
WT_CURSOR_JOIN *child;
WT_CURSOR_JOIN_ENDPOINT *end;
WT_CURSOR_JOIN_ENTRY *entry;
bool hasins, needbloom, nested, range_eq;
size_t len;
u_int i, ins, nonbloom;
uint8_t endrange;
entry = NULL;
hasins = needbloom = false;
ins = nonbloom = 0; /* -Wuninitialized */
if (cjoin->entries_next == 0) {
if (LF_ISSET(WT_CURJOIN_ENTRY_DISJUNCTION))
F_SET(cjoin, WT_CURJOIN_DISJUNCTION);
} else if (LF_ISSET(WT_CURJOIN_ENTRY_DISJUNCTION) &&
!F_ISSET(cjoin, WT_CURJOIN_DISJUNCTION))
WT_RET_MSG(session, EINVAL,
"operation=or does not match previous operation=and");
else if (!LF_ISSET(WT_CURJOIN_ENTRY_DISJUNCTION) &&
F_ISSET(cjoin, WT_CURJOIN_DISJUNCTION))
WT_RET_MSG(session, EINVAL,
"operation=and does not match previous operation=or");
nested = WT_PREFIX_MATCH(ref_cursor->uri, "join:");
if (!nested)
for (i = 0; i < cjoin->entries_next; i++) {
if (cjoin->entries[i].index == idx &&
cjoin->entries[i].subjoin == NULL) {
entry = &cjoin->entries[i];
break;
}
if (!needbloom && i > 0 &&
!F_ISSET(&cjoin->entries[i],
WT_CURJOIN_ENTRY_BLOOM)) {
needbloom = true;
nonbloom = i;
}
}
else {
if (LF_ISSET(WT_CURJOIN_ENTRY_BLOOM))
WT_RET_MSG(session, EINVAL,
"Bloom filters cannot be used with subjoins");
}
if (entry == NULL) {
WT_RET(__wt_realloc_def(session, &cjoin->entries_allocated,
cjoin->entries_next + 1, &cjoin->entries));
if (LF_ISSET(WT_CURJOIN_ENTRY_BLOOM) && needbloom) {
/*
* Reorder the list so that after the first entry,
* the Bloom filtered entries come next, followed by
* the non-Bloom entries. Once the Bloom filters
* are built, determining membership via Bloom is
* faster than without Bloom, so we can answer
* membership questions more quickly, and with less
* I/O, with the Bloom entries first.
*/
entry = &cjoin->entries[nonbloom];
memmove(entry + 1, entry,
(cjoin->entries_next - nonbloom) *
sizeof(WT_CURSOR_JOIN_ENTRY));
memset(entry, 0, sizeof(WT_CURSOR_JOIN_ENTRY));
}
else
entry = &cjoin->entries[cjoin->entries_next];
entry->index = idx;
entry->flags = flags;
entry->count = count;
entry->bloom_bit_count = bloom_bit_count;
entry->bloom_hash_count = bloom_hash_count;
++cjoin->entries_next;
} else {
/* Merge the join into an existing entry for this index */
if (count != 0 && entry->count != 0 && entry->count != count)
WT_RET_MSG(session, EINVAL,
"count=%" PRIu64 " does not match "
"previous count=%" PRIu64 " for this index",
count, entry->count);
if (LF_MASK(WT_CURJOIN_ENTRY_BLOOM) !=
F_MASK(entry, WT_CURJOIN_ENTRY_BLOOM))
WT_RET_MSG(session, EINVAL,
"join has incompatible strategy "
"values for the same index");
/*
* Check against other comparisons (we call them endpoints)
* already set up for this index.
* We allow either:
* - one or more "eq" (with disjunction)
* - exactly one "eq" (with conjunction)
* - exactly one of "gt" or "ge" (conjunction or disjunction)
* - exactly one of "lt" or "le" (conjunction or disjunction)
* - one of "gt"/"ge" along with one of "lt"/"le"
* (currently restricted to conjunction).
*
* Some other combinations, although expressible either do
* not make sense (X == 3 AND X == 5) or are reducible (X <
* 7 AND X < 9). Other specific cases of (X < 7 OR X > 15)
* or (X == 4 OR X > 15) make sense but we don't handle yet.
*/
for (i = 0; i < entry->ends_next; i++) {
end = &entry->ends[i];
range_eq = (range == WT_CURJOIN_END_EQ);
endrange = WT_CURJOIN_END_RANGE(end);
if ((F_ISSET(end, WT_CURJOIN_END_GT) &&
((range & WT_CURJOIN_END_GT) != 0 || range_eq)) ||
(F_ISSET(end, WT_CURJOIN_END_LT) &&
((range & WT_CURJOIN_END_LT) != 0 || range_eq)) ||
(endrange == WT_CURJOIN_END_EQ &&
(range & (WT_CURJOIN_END_LT | WT_CURJOIN_END_GT))
!= 0))
WT_RET_MSG(session, EINVAL,
"join has overlapping ranges");
if (range == WT_CURJOIN_END_EQ &&
endrange == WT_CURJOIN_END_EQ &&
!F_ISSET(entry, WT_CURJOIN_ENTRY_DISJUNCTION))
WT_RET_MSG(session, EINVAL,
"compare=eq can only be combined "
"using operation=or");
/*
* Sort "gt"/"ge" to the front, followed by any number
* of "eq", and finally "lt"/"le".
*/
if (!hasins &&
((range & WT_CURJOIN_END_GT) != 0 ||
(range == WT_CURJOIN_END_EQ &&
endrange != WT_CURJOIN_END_EQ &&
!F_ISSET(end, WT_CURJOIN_END_GT)))) {
ins = i;
hasins = true;
}
}
/* All checks completed, merge any new configuration now */
entry->count = count;
entry->bloom_bit_count =
WT_MAX(entry->bloom_bit_count, bloom_bit_count);
entry->bloom_hash_count =
WT_MAX(entry->bloom_hash_count, bloom_hash_count);
}
if (nested) {
child = (WT_CURSOR_JOIN *)ref_cursor;
entry->subjoin = child;
child->parent = cjoin;
} else {
WT_RET(__curjoin_insert_endpoint(session, entry,
hasins ? ins : entry->ends_next, &end));
end->cursor = ref_cursor;
F_SET(end, range);
if (entry->main == NULL && idx != NULL) {
/*
* Open the main file with a projection of the
* indexed columns.
*/
WT_RET(__curjoin_open_main(session, cjoin, entry));
/*
* When we are repacking index keys to remove the
* primary key, we never want to transform trailing
* 'u'. Use no-op padding to force this.
*/
cindex = (WT_CURSOR_INDEX *)ref_cursor;
len = strlen(cindex->iface.key_format) + 3;
WT_RET(__wt_calloc(session, len, 1,
&entry->repack_format));
snprintf(entry->repack_format, len, "%s0x",
cindex->iface.key_format);
}
}
return (0);
}
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