/*修改表名*/
static int __rename_table(WT_SESSION_IMPL *session, const char *uri, const char *newuri, const char *cfg[])
{
WT_DECL_RET;
WT_TABLE *table;
u_int i;
const char *oldname;
oldname = uri;
(void)WT_PREFIX_SKIP(oldname, "table:");
WT_RET(__wt_schema_get_table(session, oldname, strlen(oldname), 0, &table));
/* Rename the column groups. */
for (i = 0; i < WT_COLGROUPS(table); i++)
WT_ERR(__rename_tree(session, table, newuri, table->cgroups[i]->name, cfg));
/* Rename the indices. */
WT_ERR(__wt_schema_open_indices(session, table));
for (i = 0; i < table->nindices; i++)
WT_ERR(__rename_tree(session, table, newuri, table->indices[i]->name, cfg));
WT_ERR(__wt_schema_remove_table(session, table));
table = NULL;
/* Rename the table. */
WT_ERR(__metadata_rename(session, uri, newuri));
}
/*
* __rename_table --
* WT_SESSION::rename for a table.
*/
static int
__rename_table(WT_SESSION_IMPL *session,
const char *uri, const char *newuri, const char *cfg[])
{
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_TABLE *table;
u_int i;
const char *oldname, *value;
oldname = uri;
(void)WT_PREFIX_SKIP(oldname, "table:");
WT_RET(__wt_schema_get_table(
session, oldname, strlen(oldname), 0, &table));
/* Rename the column groups. */
for (i = 0; i < WT_COLGROUPS(table); i++)
WT_ERR(__rename_tree(session, table, newuri,
table->cgroups[i]->name, cfg));
/* Rename the indices. */
WT_ERR(__wt_schema_open_indices(session, table));
for (i = 0; i < table->nindices; i++)
WT_ERR(__rename_tree(session, table, newuri,
table->indices[i]->name, cfg));
__wt_schema_remove_table(session, table);
table = NULL;
/* Rename the table. */
WT_ERR(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_metadata_read(session, uri, &value));
WT_ERR(__wt_metadata_remove(session, uri));
WT_ERR(__wt_metadata_insert(session, newuri, value));
err: __wt_scr_free(&buf);
if (table != NULL)
__wt_schema_release_table(session, table);
return (ret);
}
/*
* __rename_table --
* WT_SESSION::rename for a table.
*/
static int
__rename_table(
WT_SESSION_IMPL *session, const char *oldname, const char *newname)
{
WT_DECL_RET;
WT_ITEM *buf;
WT_TABLE *table;
int i;
const char *value;
buf = NULL;
WT_RET(
__wt_schema_get_table(session, oldname, strlen(oldname), &table));
/* Rename the column groups. */
for (i = 0; i < WT_COLGROUPS(table); i++)
WT_RET(__rename_tree(session, table->cg_name[i], newname));
/* Rename the indices. */
WT_RET(__wt_schema_open_index(session, table, NULL, 0));
for (i = 0; i < table->nindices; i++)
WT_RET(__rename_tree(session, table->idx_name[i], newname));
WT_RET(__wt_schema_remove_table(session, table));
/* Rename the table. */
WT_ERR(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_buf_fmt(session, buf, "table:%s", oldname));
WT_ERR(__wt_metadata_read(session, buf->data, &value));
WT_ERR(__wt_metadata_remove(session, buf->data));
WT_ERR(__wt_buf_fmt(session, buf, "table:%s", newname));
WT_ERR(__wt_metadata_insert(session, buf->data, value));
err: __wt_scr_free(&buf);
return (ret);
}
