1073 lines
26 KiB
PHP
1073 lines
26 KiB
PHP
<?php
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namespace Yoast\WP\Lib\Migrations;
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use Exception;
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use Yoast\WP\Lib\Model;
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/**
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* Yoast migrations adapter class.
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*/
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class Adapter {
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/**
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* The version of this adapter.
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*
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* @var string
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*/
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private $version = '1.0';
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/**
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* Whether or not a transaction has been started.
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*
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* @var bool
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*/
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private $in_transaction = false;
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/**
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* Returns the current database name.
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*
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* @return string
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*/
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public function get_database_name() {
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global $wpdb;
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return $wpdb->dbname;
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}
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/**
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* Checks support for migrations.
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*
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* @return bool
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*/
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public function supports_migrations() {
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return true;
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}
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/**
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* Returns all column native types.
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*
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* @return array
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*/
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public function native_database_types() {
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$types = [
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'primary_key' => [
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'name' => 'integer',
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'limit' => 11,
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'null' => false,
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],
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'string' => [
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'name' => 'varchar',
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'limit' => 255,
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],
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'text' => [ 'name' => 'text' ],
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'tinytext' => [ 'name' => 'tinytext' ],
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'mediumtext' => [ 'name' => 'mediumtext' ],
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'integer' => [
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'name' => 'int',
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'limit' => 11,
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],
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'tinyinteger' => [ 'name' => 'tinyint' ],
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'smallinteger' => [ 'name' => 'smallint' ],
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'mediuminteger' => [ 'name' => 'mediumint' ],
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'biginteger' => [ 'name' => 'bigint' ],
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'float' => [ 'name' => 'float' ],
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'decimal' => [
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'name' => 'decimal',
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'scale' => 0,
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'precision' => 10,
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],
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'datetime' => [ 'name' => 'datetime' ],
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'timestamp' => [ 'name' => 'timestamp' ],
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'time' => [ 'name' => 'time' ],
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'date' => [ 'name' => 'date' ],
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'binary' => [ 'name' => 'blob' ],
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'tinybinary' => [ 'name' => 'tinyblob' ],
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'mediumbinary' => [ 'name' => 'mediumblob' ],
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'longbinary' => [ 'name' => 'longblob' ],
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'boolean' => [
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'name' => 'tinyint',
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'limit' => 1,
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],
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'enum' => [
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'name' => 'enum',
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'values' => [],
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],
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'uuid' => [
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'name' => 'char',
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'limit' => 36,
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],
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'char' => [ 'name' => 'char' ],
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];
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return $types;
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}
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/**
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* Checks if a table exists.
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*
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* @param string $table The table name.
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*
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* @return bool
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*/
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public function has_table( $table ) {
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return $this->table_exists( $table );
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}
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/**
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* Allows overriding the hardcoded schema table name constant in case of parallel migrations.
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*
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* @return string
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*/
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public function get_schema_version_table_name() {
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return Model::get_table_name( 'migrations' );
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}
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/**
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* Create the schema table, if necessary.
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*/
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public function create_schema_version_table() {
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if ( ! $this->has_table( $this->get_schema_version_table_name() ) ) {
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$t = $this->create_table( $this->get_schema_version_table_name() );
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$t->column( 'version', 'string', [ 'limit' => 191 ] );
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$t->finish();
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$this->add_index( $this->get_schema_version_table_name(), 'version', [ 'unique' => true ] );
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}
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}
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/**
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* Starts a transaction.
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*/
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public function start_transaction() {
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if ( $this->in_transaction() === false ) {
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$this->begin_transaction();
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}
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}
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/**
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* Commits a transaction.
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*/
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public function commit_transaction() {
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if ( $this->in_transaction() ) {
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$this->commit();
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}
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}
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/**
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* Rollbacks a transaction.
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*/
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public function rollback_transaction() {
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if ( $this->in_transaction() ) {
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$this->rollback();
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}
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}
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/**
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* Quotes a table name string.
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*
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* @param string $text Table name.
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*
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* @return string
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*/
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public function quote_table( $text ) {
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return '`' . $text . '`';
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}
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/**
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* Return the SQL definition of a column.
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*
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* @param string $column_name The column name.
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* @param string $type The type of the column.
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* @param array|null $options Column options.
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*
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* @return string
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*/
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public function column_definition( $column_name, $type, $options = null ) {
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$col = new Column( $this, $column_name, $type, $options );
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return $col->__toString();
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}
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/**
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* Checks if a database exists.
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*
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* @param string $database The database name.
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*
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* @return bool
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*/
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public function database_exists( $database ) {
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$ddl = 'SHOW DATABASES';
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$result = $this->select_all( $ddl );
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if ( \count( $result ) === 0 ) {
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return false;
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}
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foreach ( $result as $dbrow ) {
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if ( $dbrow['Database'] === $database ) {
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return true;
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}
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}
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return false;
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}
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/**
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* Creates a database.
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*
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* @param string $db The database name.
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*
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* @return bool
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*/
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public function create_database( $db ) {
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if ( $this->database_exists( $db ) ) {
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return false;
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}
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$ddl = \sprintf( 'CREATE DATABASE %s', $this->identifier( $db ) );
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$result = $this->query( $ddl );
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return $result === true;
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}
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/**
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* Drops a database.
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*
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* @param string $db The database name.
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*
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* @return bool
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*/
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public function drop_database( $db ) {
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if ( ! $this->database_exists( $db ) ) {
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return false;
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}
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$ddl = \sprintf( 'DROP DATABASE IF EXISTS %s', $this->identifier( $db ) );
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$result = $this->query( $ddl );
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return $result === true;
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}
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/**
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* Checks if a table exists.
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*
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* @param string $table The table name.
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*
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* @return bool
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*/
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public function table_exists( $table ) {
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global $wpdb;
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// We need last error to be clear so we can check against it easily.
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$previous_last_error = $wpdb->last_error;
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$previous_suppress_errors = $wpdb->suppress_errors;
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$wpdb->last_error = '';
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$wpdb->suppress_errors = true;
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$result = $wpdb->query( "SELECT * FROM $table LIMIT 1" );
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// Restore the last error, as this is not truly an error and we don't want to alarm people.
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$wpdb->last_error = $previous_last_error;
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$wpdb->suppress_errors = $previous_suppress_errors;
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return $result !== false;
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}
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/**
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* Wrapper to execute a query.
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*
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* @param string $query The query to run.
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*
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* @return bool
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*/
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public function execute( $query ) {
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return $this->query( $query );
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}
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/**
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* Executes a query.
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*
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* @param string $query The query to run.
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*
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* @return bool Whether or not the query was performed succesfully.
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*/
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public function query( $query ) {
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global $wpdb;
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$query_type = $this->determine_query_type( $query );
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$data = [];
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if ( $query_type === Constants::SQL_SELECT || $query_type === Constants::SQL_SHOW ) {
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$data = $wpdb->get_results( $query, ARRAY_A );
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if ( $data === false ) {
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return false;
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}
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return $data;
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}
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else {
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// INSERT, DELETE, etc...
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$result = $wpdb->query( $query );
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if ( $result === false ) {
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return false;
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}
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if ( $query_type === Constants::SQL_INSERT ) {
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return $wpdb->insert_id;
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}
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return true;
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}
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}
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/**
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* Returns a single result for a query.
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*
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* @param string $query The query to run.
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*
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* @return array|false An associative array of the result.
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*/
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public function select_one( $query ) {
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global $wpdb;
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$query_type = $this->determine_query_type( $query );
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if ( $query_type === Constants::SQL_SELECT || $query_type === Constants::SQL_SHOW ) {
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$result = $wpdb->query( $query );
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if ( $result === false ) {
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return false;
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}
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return $wpdb->last_result[0];
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}
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return false;
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}
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/**
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* Returns all results for a query.
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*
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* @param string $query The query to run.
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*
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* @return array An array of associative arrays.
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*/
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public function select_all( $query ) {
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return $this->query( $query );
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}
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/**
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* Use this method for non-SELECT queries.
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* Or anything where you dont necessarily expect a result string, e.g. DROPs, CREATEs, etc.
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*
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* @param string $ddl The query to run.
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*
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* @return bool
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*/
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public function execute_ddl( $ddl ) {
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return $this->query( $ddl );
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}
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/**
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* Drops a table
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*
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* @param string $table The table name.
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*
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* @return bool Whether or not the table was succesfully dropped.
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*/
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public function drop_table( $table ) {
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$ddl = \sprintf( 'DROP TABLE IF EXISTS %s', $this->identifier( $table ) );
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return $this->query( $ddl );
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}
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/**
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* Creates a table.
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*
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* @param string $table_name The table name.
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* @param array $options The options.
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*
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* @return Table
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*/
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public function create_table( $table_name, $options = [] ) {
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return new Table( $this, $table_name, $options );
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}
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/**
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* Escapes a string for usage in queries.
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*
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* @param string $text The string.
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*
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* @return string
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*/
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public function quote_string( $text ) {
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global $wpdb;
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return $wpdb->_escape( $text );
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}
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/**
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* Returns a quoted string.
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*
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* @param string $text The string.
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*
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* @return string
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*/
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public function identifier( $text ) {
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return '`' . $text . '`';
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}
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/**
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* Renames a table.
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*
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* @param string $name The current table name.
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* @param string $new_name The new table name.
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*
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* @return bool
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*/
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public function rename_table( $name, $new_name ) {
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if ( empty( $name ) || empty( $new_name ) ) {
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return false;
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}
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$sql = \sprintf( 'RENAME TABLE %s TO %s', $this->identifier( $name ), $this->identifier( $new_name ) );
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return $this->execute_ddl( $sql );
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}
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/**
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* Adds a column.
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*
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* @param string $table_name The table name.
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* @param string $column_name The column name.
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* @param string $type The column type.
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* @param array $options Column options.
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*
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* @return bool
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*/
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public function add_column( $table_name, $column_name, $type, $options = [] ) {
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if ( empty( $table_name ) || empty( $column_name ) || empty( $type ) ) {
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return false;
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}
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// Default types.
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if ( ! \array_key_exists( 'limit', $options ) ) {
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$options['limit'] = null;
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}
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if ( ! \array_key_exists( 'precision', $options ) ) {
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$options['precision'] = null;
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}
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if ( ! \array_key_exists( 'scale', $options ) ) {
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$options['scale'] = null;
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}
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$sql = \sprintf( 'ALTER TABLE %s ADD `%s` %s', $this->identifier( $table_name ), $column_name, $this->type_to_sql( $type, $options ) );
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$sql .= $this->add_column_options( $type, $options );
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return $this->execute_ddl( $sql );
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}
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/**
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* Drops a column.
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*
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* @param string $table_name The table name.
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* @param string $column_name The column name.
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*
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* @return bool
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*/
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public function remove_column( $table_name, $column_name ) {
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$sql = \sprintf( 'ALTER TABLE %s DROP COLUMN %s', $this->identifier( $table_name ), $this->identifier( $column_name ) );
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return $this->execute_ddl( $sql );
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}
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/**
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* Renames a column.
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*
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* @param string $table_name The table name.
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* @param string $column_name The column name.
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* @param string $new_column_name The new column name.
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*
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* @return bool
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*/
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public function rename_column( $table_name, $column_name, $new_column_name ) {
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if ( empty( $table_name ) || empty( $column_name ) || empty( $new_column_name ) ) {
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return false;
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}
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$column_info = $this->column_info( $table_name, $column_name );
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$current_type = $column_info['type'];
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$sql = \sprintf( 'ALTER TABLE %s CHANGE %s %s %s', $this->identifier( $table_name ), $this->identifier( $column_name ), $this->identifier( $new_column_name ), $current_type );
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$sql .= $this->add_column_options( $current_type, $column_info );
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return $this->execute_ddl( $sql );
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}
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/**
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* Changes a column.
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*
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* @param string $table_name The table name.
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* @param string $column_name The column name.
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* @param string $type The column type.
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* @param array $options Column options.
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*
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* @return bool
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*/
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public function change_column( $table_name, $column_name, $type, $options = [] ) {
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if ( empty( $table_name ) || empty( $column_name ) || empty( $type ) ) {
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return false;
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}
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$column_info = $this->column_info( $table_name, $column_name );
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// Default types.
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if ( ! \array_key_exists( 'limit', $options ) ) {
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$options['limit'] = null;
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}
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if ( ! \array_key_exists( 'precision', $options ) ) {
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$options['precision'] = null;
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}
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if ( ! \array_key_exists( 'scale', $options ) ) {
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$options['scale'] = null;
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}
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$sql = \sprintf( 'ALTER TABLE `%s` CHANGE `%s` `%s` %s', $table_name, $column_name, $column_name, $this->type_to_sql( $type, $options ) );
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$sql .= $this->add_column_options( $type, $options );
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return $this->execute_ddl( $sql );
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}
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/**
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* Returns the database information for a column.
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*
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* @param string $table The table name.
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* @param string $column The column name.
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*
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* @return array|null
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*/
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public function column_info( $table, $column ) {
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if ( empty( $table ) || empty( $column ) ) {
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return null;
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}
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try {
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$sql = \sprintf( "SHOW FULL COLUMNS FROM %s LIKE '%s'", $this->identifier( $table ), $column );
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$result = $this->select_one( $sql );
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if ( \is_array( $result ) ) {
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$result = \array_change_key_case( $result, \CASE_LOWER );
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}
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return $result;
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} catch ( Exception $e ) {
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return null;
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}
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}
|
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|
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/**
|
|
* Adds an index.
|
|
*
|
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* @param string $table_name The table name.
|
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* @param array|string $column_name The column name(s).
|
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* @param array $options Index options.
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*
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* @return bool
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*/
|
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public function add_index( $table_name, $column_name, $options = [] ) {
|
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if ( empty( $table_name ) || empty( $column_name ) ) {
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return false;
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}
|
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// Unique index?
|
|
if ( \is_array( $options ) && \array_key_exists( 'unique', $options ) && $options['unique'] === true ) {
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$unique = true;
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}
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else {
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$unique = false;
|
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}
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|
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// Did the user specify an index name?
|
|
if ( \is_array( $options ) && \array_key_exists( 'name', $options ) ) {
|
|
$index_name = $options['name'];
|
|
}
|
|
else {
|
|
$index_name = $this->get_index_name( $table_name, $column_name );
|
|
}
|
|
|
|
if ( \strlen( $index_name ) > Constants::MYSQL_MAX_IDENTIFIER_LENGTH ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! \is_array( $column_name ) ) {
|
|
$column_names = [ $column_name ];
|
|
}
|
|
else {
|
|
$column_names = $column_name;
|
|
}
|
|
|
|
$cols = [];
|
|
foreach ( $column_names as $name ) {
|
|
$cols[] = $this->identifier( $name );
|
|
}
|
|
$sql = \sprintf(
|
|
'CREATE %sINDEX %s ON %s(%s)',
|
|
( $unique === true ) ? 'UNIQUE ' : '',
|
|
$this->identifier( $index_name ),
|
|
$this->identifier( $table_name ),
|
|
\implode( ', ', $cols )
|
|
);
|
|
|
|
return $this->execute_ddl( $sql );
|
|
}
|
|
|
|
/**
|
|
* Drops an index.
|
|
*
|
|
* @param string $table_name The table name.
|
|
* @param array|string $column_name The column name(s).
|
|
* @param array $options Index options.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function remove_index( $table_name, $column_name, $options = [] ) {
|
|
if ( empty( $table_name ) || empty( $column_name ) ) {
|
|
return false;
|
|
}
|
|
// Did the user specify an index name?
|
|
if ( \is_array( $options ) && \array_key_exists( 'name', $options ) ) {
|
|
$index_name = $options['name'];
|
|
}
|
|
else {
|
|
$index_name = $this->get_index_name( $table_name, $column_name );
|
|
}
|
|
|
|
$sql = \sprintf( 'DROP INDEX %s ON %s', $this->identifier( $index_name ), $this->identifier( $table_name ) );
|
|
|
|
return $this->execute_ddl( $sql );
|
|
}
|
|
|
|
/**
|
|
* Adds timestamps.
|
|
*
|
|
* @param string $table_name The table name.
|
|
* @param string $created_column_name Created at column name.
|
|
* @param string $updated_column_name Updated at column name.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function add_timestamps( $table_name, $created_column_name, $updated_column_name ) {
|
|
if ( empty( $table_name ) || empty( $created_column_name ) || empty( $updated_column_name ) ) {
|
|
return false;
|
|
}
|
|
$created_at = $this->add_column( $table_name, $created_column_name, 'datetime' );
|
|
$updated_at = $this->add_column(
|
|
$table_name,
|
|
$updated_column_name,
|
|
'timestamp',
|
|
[
|
|
'null' => false,
|
|
'default' => 'CURRENT_TIMESTAMP',
|
|
'extra' => 'ON UPDATE CURRENT_TIMESTAMP',
|
|
]
|
|
);
|
|
|
|
return $created_at && $updated_at;
|
|
}
|
|
|
|
/**
|
|
* Removes timestamps.
|
|
*
|
|
* @param string $table_name The table name.
|
|
* @param string $created_column_name Created at column name.
|
|
* @param string $updated_column_name Updated at column name.
|
|
*
|
|
* @return bool Whether or not the timestamps were removed.
|
|
*/
|
|
public function remove_timestamps( $table_name, $created_column_name, $updated_column_name ) {
|
|
if ( empty( $table_name ) || empty( $created_column_name ) || empty( $updated_column_name ) ) {
|
|
return false;
|
|
}
|
|
$updated_at = $this->remove_column( $table_name, $created_column_name );
|
|
$created_at = $this->remove_column( $table_name, $updated_column_name );
|
|
|
|
return $created_at && $updated_at;
|
|
}
|
|
|
|
/**
|
|
* Checks an index.
|
|
*
|
|
* @param string $table_name The table name.
|
|
* @param array|string $column_name The column name(s).
|
|
* @param array $options Index options.
|
|
*
|
|
* @return bool Whether or not the index exists.
|
|
*/
|
|
public function has_index( $table_name, $column_name, $options = [] ) {
|
|
if ( empty( $table_name ) || empty( $column_name ) ) {
|
|
return false;
|
|
}
|
|
// Did the user specify an index name?
|
|
if ( \is_array( $options ) && \array_key_exists( 'name', $options ) ) {
|
|
$index_name = $options['name'];
|
|
}
|
|
else {
|
|
$index_name = $this->get_index_name( $table_name, $column_name );
|
|
}
|
|
$indexes = $this->indexes( $table_name );
|
|
foreach ( $indexes as $idx ) {
|
|
if ( $idx['name'] === $index_name ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns all indexes of a table.
|
|
*
|
|
* @param string $table_name The table name.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function indexes( $table_name ) {
|
|
$sql = \sprintf( 'SHOW KEYS FROM %s', $this->identifier( $table_name ) );
|
|
$result = $this->select_all( $sql );
|
|
$indexes = [];
|
|
foreach ( $result as $row ) {
|
|
// Skip primary.
|
|
if ( $row['Key_name'] === 'PRIMARY' ) {
|
|
continue;
|
|
}
|
|
$indexes[] = [
|
|
'name' => $row['Key_name'],
|
|
'unique' => (int) $row['Non_unique'] === 0,
|
|
];
|
|
}
|
|
|
|
return $indexes;
|
|
}
|
|
|
|
/**
|
|
* Converts a type to sql. Default options:
|
|
* $limit = null, $precision = null, $scale = null
|
|
*
|
|
* @param string $type The native type.
|
|
* @param array $options The options.
|
|
*
|
|
* @return string The SQL type.
|
|
*
|
|
* @throws Exception If invalid arguments are supplied.
|
|
*/
|
|
public function type_to_sql( $type, $options = [] ) {
|
|
$natives = $this->native_database_types();
|
|
if ( ! \array_key_exists( $type, $natives ) ) {
|
|
$error = \sprintf( "Error:I dont know what column type of '%s' maps to for MySQL.", $type );
|
|
$error .= "\nYou provided: {$type}\n";
|
|
$error .= "Valid types are: \n";
|
|
$types = \array_keys( $natives );
|
|
foreach ( $types as $t ) {
|
|
if ( $t === 'primary_key' ) {
|
|
continue;
|
|
}
|
|
$error .= "\t{$t}\n";
|
|
}
|
|
throw new Exception( $error );
|
|
}
|
|
$scale = null;
|
|
$precision = null;
|
|
$limit = null;
|
|
if ( isset( $options['precision'] ) ) {
|
|
$precision = $options['precision'];
|
|
}
|
|
if ( isset( $options['scale'] ) ) {
|
|
$scale = $options['scale'];
|
|
}
|
|
if ( isset( $options['limit'] ) ) {
|
|
$limit = $options['limit'];
|
|
}
|
|
if ( isset( $options['values'] ) ) {
|
|
$values = $options['values'];
|
|
}
|
|
$native_type = $natives[ $type ];
|
|
if ( \is_array( $native_type ) && \array_key_exists( 'name', $native_type ) ) {
|
|
$column_type_sql = $native_type['name'];
|
|
}
|
|
else {
|
|
return $native_type;
|
|
}
|
|
if ( $type === 'decimal' || $type === 'float' ) {
|
|
// Ignore limit, use precison and scale.
|
|
if ( $precision === null && \array_key_exists( 'precision', $native_type ) ) {
|
|
$precision = $native_type['precision'];
|
|
}
|
|
if ( $scale === null && \array_key_exists( 'scale', $native_type ) ) {
|
|
$scale = $native_type['scale'];
|
|
}
|
|
if ( $precision !== null ) {
|
|
if ( \is_int( $scale ) ) {
|
|
$column_type_sql .= \sprintf( '(%d, %d)', $precision, $scale );
|
|
}
|
|
else {
|
|
$column_type_sql .= \sprintf( '(%d)', $precision );
|
|
}
|
|
}
|
|
else {
|
|
if ( $scale ) {
|
|
throw new Exception( "Error adding $type column: precision cannot be empty if scale is specified" );
|
|
}
|
|
}
|
|
}
|
|
elseif ( $type === 'enum' ) {
|
|
if ( empty( $values ) ) {
|
|
throw new Exception( 'Error adding enum column: there must be at least one value defined' );
|
|
}
|
|
else {
|
|
$column_type_sql .= \sprintf(
|
|
"('%s')",
|
|
\implode( "','", \array_map( [ $this, 'quote_string' ], $values ) )
|
|
);
|
|
}
|
|
}
|
|
// Not a decimal column.
|
|
if ( $limit === null && \array_key_exists( 'limit', $native_type ) ) {
|
|
$limit = $native_type['limit'];
|
|
}
|
|
if ( $limit ) {
|
|
$column_type_sql .= \sprintf( '(%d)', $limit );
|
|
}
|
|
|
|
return $column_type_sql;
|
|
}
|
|
|
|
/**
|
|
* Adds column options.
|
|
*
|
|
* @param string $type The native type.
|
|
* @param array $options The options.
|
|
*
|
|
* @return string The SQL statement for the column options.
|
|
*
|
|
* @throws Exception If invalid arguments are supplied.
|
|
*/
|
|
public function add_column_options( $type, $options ) {
|
|
$sql = '';
|
|
if ( ! \is_array( $options ) ) {
|
|
return $sql;
|
|
}
|
|
if ( \array_key_exists( 'unsigned', $options ) && $options['unsigned'] === true ) {
|
|
$sql .= ' UNSIGNED';
|
|
}
|
|
if ( \array_key_exists( 'character', $options ) ) {
|
|
$sql .= \sprintf( ' CHARACTER SET %s', $this->identifier( $options['character'] ) );
|
|
}
|
|
if ( \array_key_exists( 'collate', $options ) ) {
|
|
$sql .= \sprintf( ' COLLATE %s', $this->identifier( $options['collate'] ) );
|
|
}
|
|
if ( \array_key_exists( 'auto_increment', $options ) && $options['auto_increment'] === true ) {
|
|
$sql .= ' auto_increment';
|
|
}
|
|
if ( \array_key_exists( 'default', $options ) && $options['default'] !== null ) {
|
|
if ( $this->is_sql_method_call( $options['default'] ) ) {
|
|
throw new Exception( 'MySQL does not support function calls as default values, constants only.' );
|
|
}
|
|
if ( \is_int( $options['default'] ) ) {
|
|
$default_format = '%d';
|
|
}
|
|
elseif ( \is_bool( $options['default'] ) ) {
|
|
$default_format = "'%d'";
|
|
}
|
|
elseif ( $options['default'] === 'CURRENT_TIMESTAMP' ) {
|
|
$default_format = '%s';
|
|
}
|
|
else {
|
|
$default_format = "'%s'";
|
|
}
|
|
$default_value = \sprintf( $default_format, $options['default'] );
|
|
$sql .= \sprintf( ' DEFAULT %s', $default_value );
|
|
}
|
|
if ( \array_key_exists( 'null', $options ) ) {
|
|
if ( $options['null'] === false || $options['null'] === 'NO' ) {
|
|
$sql .= ' NOT NULL';
|
|
}
|
|
elseif ( $type === 'timestamp' ) {
|
|
$sql .= ' NULL';
|
|
}
|
|
}
|
|
if ( \array_key_exists( 'comment', $options ) ) {
|
|
$sql .= \sprintf( " COMMENT '%s'", $this->quote_string( $options['comment'] ) );
|
|
}
|
|
if ( \array_key_exists( 'extra', $options ) ) {
|
|
$sql .= \sprintf( ' %s', $this->quote_string( $options['extra'] ) );
|
|
}
|
|
if ( \array_key_exists( 'after', $options ) ) {
|
|
$sql .= \sprintf( ' AFTER %s', $this->identifier( $options['after'] ) );
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Returns a list of all versions that have been migrated.
|
|
*
|
|
* @return string[] The version numbers that have been migrated.
|
|
*/
|
|
public function get_migrated_versions() {
|
|
$result = $this->select_all( \sprintf( 'SELECT version FROM %s', $this->get_schema_version_table_name() ) );
|
|
return \array_column( $result, 'version' );
|
|
}
|
|
|
|
/**
|
|
* Adds a migrated version.
|
|
*
|
|
* @param string $version The version.
|
|
*
|
|
* @return bool Whether or not the version was succesfully set.
|
|
*/
|
|
public function add_version( $version ) {
|
|
$sql = \sprintf( "INSERT INTO %s (version) VALUES ('%s')", $this->get_schema_version_table_name(), $version );
|
|
|
|
return $this->execute_ddl( $sql );
|
|
}
|
|
|
|
/**
|
|
* Removes a migrated version.
|
|
*
|
|
* @param string $version The version.
|
|
*
|
|
* @return bool Whether or not the version was succesfully removed.
|
|
*/
|
|
public function remove_version( $version ) {
|
|
$sql = \sprintf( "DELETE FROM %s WHERE version = '%s'", $this->get_schema_version_table_name(), $version );
|
|
|
|
return $this->execute_ddl( $sql );
|
|
}
|
|
|
|
/**
|
|
* Returns a message displaying the current version
|
|
*
|
|
* @return string
|
|
*/
|
|
public function __toString() {
|
|
return self::class . ', version ' . $this->version;
|
|
}
|
|
|
|
/**
|
|
* Returns an index name.
|
|
*
|
|
* @param string $table_name The table name.
|
|
* @param string $column_name The column name.
|
|
*
|
|
* @return string The index name.
|
|
*/
|
|
private function get_index_name( $table_name, $column_name ) {
|
|
$name = \preg_replace( '/\\W/', '_', $table_name );
|
|
$name = \preg_replace( '/\\_{2,}/', '_', $name );
|
|
// If the column parameter is an array then the user wants to create a multi-column index.
|
|
if ( \is_array( $column_name ) ) {
|
|
$column_str = \implode( '_and_', $column_name );
|
|
}
|
|
else {
|
|
$column_str = $column_name;
|
|
}
|
|
$name .= \sprintf( '_%s', $column_str );
|
|
return $name;
|
|
}
|
|
|
|
/**
|
|
* Returns the type of a query.
|
|
*
|
|
* @param string $query The query to run.
|
|
*
|
|
* @return int The query type.
|
|
*/
|
|
private function determine_query_type( $query ) {
|
|
$query = \strtolower( \trim( $query ) );
|
|
$match = [];
|
|
\preg_match( '/^(\\w)*/i', $query, $match );
|
|
$type = $match[0];
|
|
switch ( $type ) {
|
|
case 'select':
|
|
return Constants::SQL_SELECT;
|
|
case 'update':
|
|
return Constants::SQL_UPDATE;
|
|
case 'delete':
|
|
return Constants::SQL_DELETE;
|
|
case 'insert':
|
|
return Constants::SQL_INSERT;
|
|
case 'alter':
|
|
return Constants::SQL_ALTER;
|
|
case 'drop':
|
|
return Constants::SQL_DROP;
|
|
case 'create':
|
|
return Constants::SQL_CREATE;
|
|
case 'show':
|
|
return Constants::SQL_SHOW;
|
|
case 'rename':
|
|
return Constants::SQL_RENAME;
|
|
case 'set':
|
|
return Constants::SQL_SET;
|
|
default:
|
|
return Constants::SQL_UNKNOWN_QUERY_TYPE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Detect whether or not the string represents a function call and if so
|
|
* do not wrap it in single-quotes, otherwise do wrap in single quotes.
|
|
*
|
|
* @param string $text The string.
|
|
*
|
|
* @return bool Whether or not it's a SQL function call.
|
|
*/
|
|
private function is_sql_method_call( $text ) {
|
|
$text = \trim( $text );
|
|
if ( \substr( $text, -2, 2 ) === '()' ) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks if a transaction is active.
|
|
*
|
|
* @return bool
|
|
*/
|
|
private function in_transaction() {
|
|
return $this->in_transaction;
|
|
}
|
|
|
|
/**
|
|
* Starts a transaction.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws Exception If a transaction was already started.
|
|
*/
|
|
private function begin_transaction() {
|
|
global $wpdb;
|
|
|
|
if ( $this->in_transaction === true ) {
|
|
throw new Exception( 'Transaction already started' );
|
|
}
|
|
$wpdb->query( 'START TRANSACTION' );
|
|
$this->in_transaction = true;
|
|
}
|
|
|
|
/**
|
|
* Commits a transaction.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws Exception If no transaction was strated.
|
|
*/
|
|
private function commit() {
|
|
global $wpdb;
|
|
|
|
if ( $this->in_transaction === false ) {
|
|
throw new Exception( 'Transaction not started' );
|
|
}
|
|
$wpdb->query( 'COMMIT' );
|
|
$this->in_transaction = false;
|
|
}
|
|
|
|
/**
|
|
* Rollbacks a transaction.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws Exception If no transaction was started.
|
|
*/
|
|
private function rollback() {
|
|
global $wpdb;
|
|
|
|
if ( $this->in_transaction === false ) {
|
|
throw new Exception( 'Transaction not started' );
|
|
}
|
|
$wpdb->query( 'ROLLBACK' );
|
|
$this->in_transaction = false;
|
|
}
|
|
}
|