190 lines
8.3 KiB
C++
190 lines
8.3 KiB
C++
/* Copyright (c) 2016, 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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#include "sql/dd/impl/tables/triggers.h"
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#include <memory>
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#include <new>
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#include "my_dbug.h"
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#include "sql/dd/impl/object_key.h"
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#include "sql/dd/impl/raw/object_keys.h" // dd::Global_name_key
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#include "sql/dd/impl/raw/raw_record.h" // dd::Raw_record
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#include "sql/dd/impl/raw/raw_table.h" // dd::Raw_table
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#include "sql/dd/impl/tables/dd_properties.h" // TARGET_DD_VERSION
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#include "sql/dd/impl/transaction_impl.h" // Transaction_ro
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#include "sql/dd/impl/types/object_table_definition_impl.h"
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#include "sql/dd/types/table.h"
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#include "sql/handler.h"
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namespace dd {
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namespace tables {
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///////////////////////////////////////////////////////////////////////////
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const CHARSET_INFO *Triggers::name_collation() {
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return &my_charset_utf8_general_ci;
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}
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///////////////////////////////////////////////////////////////////////////
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Triggers::Triggers() {
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m_target_def.set_table_name("triggers");
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m_target_def.add_field(FIELD_ID, "FIELD_ID",
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"id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT");
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m_target_def.add_field(FIELD_SCHEMA_ID, "FIELD_SCHEMA_ID",
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"schema_id BIGINT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_NAME, "FIELD_NAME",
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"name VARCHAR(64) NOT NULL COLLATE " +
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String_type(name_collation()->name));
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m_target_def.add_field(FIELD_EVENT_TYPE, "FIELD_EVENT_TYPE",
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"event_type ENUM('INSERT', 'UPDATE', 'DELETE') "
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"NOT NULL");
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m_target_def.add_field(FIELD_TABLE_ID, "FIELD_TABLE_ID",
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"table_id BIGINT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_ACTION_TIMING, "FIELD_ACTION_TIMING",
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"action_timing ENUM('BEFORE', 'AFTER') NOT NULL");
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m_target_def.add_field(FIELD_ACTION_ORDER, "FIELD_ACTION_ORDER",
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"action_order INT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_ACTION_STATEMENT, "FIELD_ACTION_STATEMENT",
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"action_statement LONGBLOB NOT NULL");
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m_target_def.add_field(FIELD_ACTION_STATEMENT_UTF8,
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"FIELD_ACTION_STATEMENT_UTF8",
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"action_statement_utf8 LONGTEXT NOT NULL");
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m_target_def.add_field(FIELD_CREATED, "FIELD_CREATED",
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"created TIMESTAMP(2) NOT NULL");
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m_target_def.add_field(FIELD_LAST_ALTERED, "FIELD_LAST_ALTERED",
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"last_altered TIMESTAMP(2) NOT NULL");
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m_target_def.add_sql_mode_field(FIELD_SQL_MODE, "FIELD_SQL_MODE");
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m_target_def.add_field(FIELD_DEFINER, "FIELD_DEFINER",
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"definer VARCHAR(288) NOT NULL");
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m_target_def.add_field(FIELD_CLIENT_COLLATION_ID, "FIELD_CLIENT_COLLATION_ID",
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"client_collation_id BIGINT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_CONNECTION_COLLATION_ID,
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"FIELD_CONNECTION_COLLATION_ID",
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"connection_collation_id BIGINT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_SCHEMA_COLLATION_ID, "FIELD_SCHEMA_COLLATION_ID",
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"schema_collation_id BIGINT UNSIGNED NOT NULL");
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m_target_def.add_field(FIELD_OPTIONS, "FIELD_OPTIONS", "options MEDIUMTEXT");
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m_target_def.add_index(INDEX_PK_ID, "INDEX_PK_ID", "PRIMARY KEY(id)");
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m_target_def.add_index(INDEX_UK_SCHEMA_ID_NAME, "INDEX_UK_SCHEMA_ID_NAME",
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"UNIQUE KEY (schema_id, name)");
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m_target_def.add_index(
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INDEX_UK_TABLE_ID_EVENT_TYPE_ACTION_TIMING_ACTION_ORDER,
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"INDEX_UK_TABLE_ID_EVENT_TYPE_ACTION_TIMING_ACTION_ORDER",
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"UNIQUE KEY (table_id, event_type, "
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"action_timing, action_order)");
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m_target_def.add_index(INDEX_K_CLIENT_COLLATION_ID,
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"INDEX_K_CLIENT_COLLATION_ID",
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"KEY(client_collation_id)");
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m_target_def.add_index(INDEX_K_CONNECTION_COLLATION_ID,
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"INDEX_K_CONNECTION_COLLATION_ID",
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"KEY(connection_collation_id)");
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m_target_def.add_index(INDEX_K_SCHEMA_COLLATION_ID,
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"INDEX_K_SCHEMA_COLLATION_ID",
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"KEY(schema_collation_id)");
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m_target_def.add_foreign_key(FK_SCHEMA_ID, "FK_SCHEMA_ID",
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"FOREIGN KEY (schema_id) "
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"REFERENCES schemata(id)");
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m_target_def.add_foreign_key(FK_TABLE_ID, "FK_TABLE_ID",
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"FOREIGN KEY (table_id) "
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"REFERENCES tables(id)");
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m_target_def.add_foreign_key(FK_CLIENT_COLLATION_ID, "FK_CLIENT_COLLATION_ID",
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"FOREIGN KEY (client_collation_id) "
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"REFERENCES collations(id)");
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m_target_def.add_foreign_key(FK_CONNECTION_COLLATION_ID,
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"FK_CONNECTION_COLLATION_ID",
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"FOREIGN KEY (connection_collation_id) "
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"REFERENCES collations(id)");
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m_target_def.add_foreign_key(FK_SCHEMA_COLLATION_ID, "FK_SCHEMA_COLLATION_ID",
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"FOREIGN KEY (schema_collation_id) "
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"REFERENCES collations(id)");
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}
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///////////////////////////////////////////////////////////////////////////
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/* purecov: begin deadcode */
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Object_key *Triggers::create_key_by_schema_id(Object_id schema_id) {
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return new (std::nothrow)
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Parent_id_range_key(INDEX_UK_SCHEMA_ID_NAME, FIELD_SCHEMA_ID, schema_id);
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}
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/* purecov: end */
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///////////////////////////////////////////////////////////////////////////
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Object_key *Triggers::create_key_by_table_id(Object_id table_id) {
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return new (std::nothrow) Parent_id_range_key(
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INDEX_UK_TABLE_ID_EVENT_TYPE_ACTION_TIMING_ACTION_ORDER, FIELD_TABLE_ID,
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table_id);
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}
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///////////////////////////////////////////////////////////////////////////
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Object_key *Triggers::create_key_by_trigger_name(Object_id schema_id,
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const char *trigger_name) {
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return new (std::nothrow) Item_name_key(
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FIELD_SCHEMA_ID, schema_id, FIELD_NAME, trigger_name, name_collation());
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}
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///////////////////////////////////////////////////////////////////////////
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Object_id Triggers::read_table_id(const Raw_record &r) {
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return r.read_uint(FIELD_TABLE_ID, -1);
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}
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///////////////////////////////////////////////////////////////////////////
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bool Triggers::get_trigger_table_id(THD *thd, Object_id schema_id,
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const String_type &trigger_name,
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Object_id *oid) {
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DBUG_TRACE;
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Transaction_ro trx(thd, ISO_READ_COMMITTED);
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trx.otx.register_tables<dd::Table>();
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if (trx.otx.open_tables()) return true;
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DBUG_ASSERT(oid != nullptr);
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*oid = INVALID_OBJECT_ID;
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const std::unique_ptr<Object_key> key(
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create_key_by_trigger_name(schema_id, trigger_name.c_str()));
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Raw_table *table = trx.otx.get_table(instance().name());
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DBUG_ASSERT(table != nullptr);
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// Find record by the object-key.
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std::unique_ptr<Raw_record> record;
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if (table->find_record(*key, record)) return true;
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if (record.get()) *oid = read_table_id(*record.get());
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return false;
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}
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///////////////////////////////////////////////////////////////////////////
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} // namespace tables
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} // namespace dd
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