b706835de79a2b4e80506f582af3676a

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File name : TableMigrator.php

Content :

<?php
/**
 * Base class for all the WP posts to order table migrator.
 */

namespace Automattic\WooCommerce\Database\Migrations;

/**
 * Base class for implementing WP posts to order tables migrations handlers.
 * It mainly contains methods to deal with error handling.
 *
 * @package Automattic\WooCommerce\Database\Migrations\CustomOrderTable
 */
abstract class TableMigrator {

/**
	 * An array of cummulated error messages.
	 *
	 * @var array
	 */
	private $errors;

/**
	 * Clear the error messages list.
	 *
	 * @return void
	 */
	protected function clear_errors(): void {
		$this->errors = array();
	}

/**
	 * Add an error message to the errors list unless it's there already.
	 *
	 * @param string $error The error message to add.
	 * @return void
	 */
	protected function add_error( string $error ): void {
		if ( is_null( $this->errors ) ) {
			$this->errors = array();
		}

if ( ! in_array( $error, $this->errors, true ) ) {
			$this->errors[] = $error;
		}
	}

/**
	 * Get the list of error messages added.
	 *
	 * @return array
	 */
	protected function get_errors(): array {
		return $this->errors;
	}

/**
	 * Run $wpdb->query and add the error, if any, to the errors list.
	 *
	 * @param string $query The SQL query to run.
	 * @return mixed Whatever $wpdb->query returns.
	 */
	protected function db_query( string $query ) {
		$wpdb = WC()->get_global( 'wpdb' );

// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
		$result = $wpdb->query( $query );

if ( '' !== $wpdb->last_error ) {
			$this->add_error( $wpdb->last_error );
		}

return $result;
	}

/**
	 * Run $wpdb->get_results and add the error, if any, to the errors list.
	 *
	 * @param string|null $query The SQL query to run.
	 * @param string      $output Any of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants.
	 * @return mixed Whatever $wpdb->get_results returns.
	 */
	protected function db_get_results( string $query = null, string $output = OBJECT ) {
		$wpdb = WC()->get_global( 'wpdb' );

// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
		$result = $wpdb->get_results( $query, $output );

if ( '' !== $wpdb->last_error ) {
			$this->add_error( $wpdb->last_error );
		}

return $result;
	}

/**
	 * Migrate a batch of orders, logging any database error that could arise and the exception thrown if any.
	 *
	 * @param array $entity_ids Order ids to migrate.
	 * @return array An array containing the keys 'errors' (array of strings) and 'exception' (exception object or null).
	 *
	 * @deprecated 8.0.0 Use `fetch_sanitized_migration_data` and `process_migration_data` instead.
	 */
	public function process_migration_batch_for_ids( array $entity_ids ): array {
		$this->clear_errors();
		$exception = null;

try {
			$this->process_migration_batch_for_ids_core( $entity_ids );
		} catch ( \Exception $ex ) {
			$exception = $ex;
		}

return array(
			'errors'    => $this->get_errors(),
			'exception' => $exception,
		);
	}

// phpcs:disable Squiz.Commenting.FunctionComment.InvalidNoReturn, Squiz.Commenting.FunctionCommentThrowTag.Missing -- Methods are not marked abstract for back compat.
	/**
	 * Return data to be migrated for a batch of entities.
	 *
	 * @param array $entity_ids Ids of entities to migrate.
	 *
	 * @return array[] Data to be migrated. Would be of the form: array( 'data' => array( ... ), 'errors' => array( ... ) ).
	 */
	public function fetch_sanitized_migration_data( array $entity_ids ) {
		throw new \Exception( 'Not implemented' );
	}

/**
	 * Process migration data for a batch of entities.
	 *
	 * @param array $data Data to be migrated. Should be of the form: array( 'data' => array( ... ) ) as returned by the `fetch_sanitized_migration_data` method.
	 *
	 * @return array Array of errors and exception if any.
	 */
	public function process_migration_data( array $data ) {
		throw new \Exception( 'Not implemented' );
	}
	// phpcs:enable

/**
	 * The core method that actually performs the migration for the supplied batch of order ids.
	 * It doesn't need to deal with database errors nor with exceptions.
	 *
	 * @param array $entity_ids Order ids to migrate.
	 * @return void
	 *
	 * @deprecated 8.0.0 Use `fetch_sanitized_migration_data` and `process_migration_data` instead.
	 */
	abstract protected function process_migration_batch_for_ids_core( array $entity_ids ): void;

/**
	 * Check if the amount of processed database rows matches the amount of orders to process, and log an error if not.
	 *
	 * @param string     $operation Operation performed, 'insert' or 'update'.
	 * @param array|bool $received_rows_count Value returned by @wpdb after executing the query.
	 * @return void
	 */
	protected function maybe_add_insert_or_update_error( string $operation, $received_rows_count ) {
		if ( false === $received_rows_count ) {
			$this->add_error( "$operation operation didn't complete, the database query failed" );
		}
	}
}

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