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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* $%BEGINLICENSE%$
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Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; version 2 of the
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License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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02110-1301 USA
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$%ENDLICENSE%$ */
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#ifndef SHARDING_QUERY_PLAN
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#define SHARDING_QUERY_PLAN
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#include "glib-ext.h"
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struct _group_sql_pair {
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/* group names references sharding_partition_t.group_name */
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const GString *gp_name;
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/* sql references con->orig_sql or sharding_plan_t.sql_list */
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const GString *sql;
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};
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enum sharding_table_type_t {
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GLOBAL_TABLE,
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SHARDED_TABLE,
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SINGLE_TABLE,
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};
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typedef struct sharding_plan_t {
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GPtrArray *groups; /* GPtrArray<GString *> */
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GList *sql_list; /* GList<GString *> */
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GList *mapping; /* GList<struct _group_sql_pair *> */
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gboolean is_modified;
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const GString *orig_sql;
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const GString *modified_sql;
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enum sharding_table_type_t table_type;
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} sharding_plan_t;
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sharding_plan_t *sharding_plan_new(const GString *orig_sql);
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void sharding_plan_free(sharding_plan_t *);
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void sharding_plan_set_modified_sql(sharding_plan_t *, GString *sql);
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const GString *sharding_plan_get_sql(sharding_plan_t *, const GString *group);
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gboolean sharding_plan_has_group(sharding_plan_t *plan, const GString *gp);
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/* use orig_sql or modified sql */
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void sharding_plan_add_group(sharding_plan_t *, GString *gp_name);
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void sharding_plan_add_groups(sharding_plan_t *, GPtrArray *groups);
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void sharding_plan_clear_group(sharding_plan_t *);
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/* use group-specific sql */
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void sharding_plan_add_group_sql(sharding_plan_t *, GString *gp_name, GString *sql);
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void sharding_plan_sort_groups(sharding_plan_t *);
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#endif /* SHARDING_QUERY_PLAN */
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