105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 02110-1301 USA */
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#ifndef DD_TABLES__FOREIGN_KEYS_INCLUDED
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#define DD_TABLES__FOREIGN_KEYS_INCLUDED
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#include "sql/dd/impl/types/object_table_impl.h" // dd::Object_table_impl
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#include "sql/dd/object_id.h" // dd::Object_id
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#include "sql/dd/string_type.h"
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namespace dd {
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class Object_key;
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namespace tables {
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///////////////////////////////////////////////////////////////////////////
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class Foreign_keys : public Object_table_impl {
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public:
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static const Foreign_keys &instance();
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static const CHARSET_INFO *name_collation();
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enum enum_fields {
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FIELD_ID,
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FIELD_SCHEMA_ID,
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FIELD_TABLE_ID,
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FIELD_NAME,
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FIELD_UNIQUE_CONSTRAINT_NAME,
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FIELD_MATCH_OPTION,
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FIELD_UPDATE_RULE,
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FIELD_DELETE_RULE,
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FIELD_REFERENCED_TABLE_CATALOG,
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FIELD_REFERENCED_TABLE_SCHEMA,
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FIELD_REFERENCED_TABLE,
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FIELD_OPTIONS,
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NUMBER_OF_FIELDS // Always keep this entry at the end of the enum
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};
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enum enum_indexes {
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INDEX_PK_ID = static_cast<uint>(Common_index::PK_ID),
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INDEX_UK_SCHEMA_ID_NAME = static_cast<uint>(Common_index::UK_NAME),
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INDEX_UK_TABLE_ID_NAME,
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INDEX_K_REF_CATALOG_REF_SCHEMA_REF_TABLE
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};
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enum enum_foreign_keys { FK_SCHEMA_ID };
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Foreign_keys();
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static Object_key *create_key_by_foreign_key_name(
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Object_id schema_id, const String_type &foreign_key_name);
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static Object_key *create_key_by_table_id(Object_id table_id);
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static Object_key *create_key_by_referenced_name(
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const String_type &referenced_catalog,
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const String_type &referenced_schema,
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const String_type &referenced_table);
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/**
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Check if schema contains foreign key with specified name.
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@param thd Thread context.
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@param schema_id Id of schema to be inspected.
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@param foreign_key_name Name of the foreign key.
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@param [out] exists Set to true if foreign key with
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the name provided exists in the
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schema, false otherwise.
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@retval false No error.
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@retval true Error.
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*/
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static bool check_foreign_key_exists(THD *thd, Object_id schema_id,
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const String_type &foreign_key_name,
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bool *exists);
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};
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///////////////////////////////////////////////////////////////////////////
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} // namespace tables
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} // namespace dd
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#endif // DD_TABLES__FOREIGN_KEYS_INCLUDED
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