WC_Data::save()

Completed

Push — master ( 6a2f87...f5cc89 )

by Mike

created 2016-08-26 09:57 UTC

↳ Parent: WC_Data

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<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
* Abstract WC Data Class
*
* Implemented by classes using the same CRUD(s) pattern.
*
* @version  2.6.0
* @package  WooCommerce/Abstracts
* @category Abstract Class
* @author   WooThemes
*/
abstract class WC_Data {

	/**
	 * Core data for this object. Name value pairs (name + default value).
	 * @var array
	 */
	protected $_data = array();

	/**
	 * Set to _data on construct so we can track and reset data if needed.
	 * @var array
	 */
	protected $_default_data = array();

	/**
	 * Stores meta in cache for future reads.
	 * A group must be set to to enable caching.
	 * @var string
	 */
	protected $_cache_group = '';

	/**
	 * Meta type. This should match up with
	 * the types avaiable at https://codex.wordpress.org/Function_Reference/add_metadata.
	 * WP defines 'post', 'user', 'comment', and 'term'.
	 */
	protected $_meta_type = 'post';

	/**
	 * This only needs set if you are using a custom metadata type (for example payment tokens.
	 * This should be the name of the field your table uses for associating meta with objects.
	 * For example, in payment_tokenmeta, this would be payment_token_id.
	 * @var string
	 */
	protected $object_id_field_for_meta = '';

	/**
	 * Stores additonal meta data.
	 * @var array
	 */
	protected $_meta_data = array();

	/**
	 * Internal meta keys we don't want exposed for the object.
	 * @var array
	 */
	protected $_internal_meta_keys = array();

	/**
	 * Default constructor.
	 * @param int|object|array $read ID to load from the DB (optional) or already queried data.
	 */
	public function __construct( $read = 0 ) {
		$this->_default_data = $this->_data;
	}

	/**
	 * Returns the unique ID for this object.
	 * @return int
	 */
	abstract public function get_id();

	/**
	 * Creates new object in the database.
	 */
	abstract public function create();

	/**
	 * Read object from the database.
	 * @param int ID of the object to load.
	 */
	abstract public function read( $id );

	/**
	 * Updates object data in the database.
	 */
	abstract public function update();

	/**
	 * Updates object data in the database.
	 */
	abstract public function delete();

	/**
	 * Save should create or update based on object existance.
	 */
	abstract public function save();

	/**
	 * Change data to JSON format.
	 * @return string Data in JSON format.
	 */
	public function __toString() {
		return json_encode( $this->get_data() );
	}

	/**
	 * Returns all data for this object.
	 * @return array
	 */
	public function get_data() {
		return array_merge( $this->_data, array( 'meta_data' => $this->get_meta_data() ) );
	}

	/**
	 * Filter null meta values from array.
	 * @return bool
	 */
	protected function filter_null_meta( $meta ) {
		return ! is_null( $meta->value );
	}

	/**
	 * Get All Meta Data.
	 * @since 2.6.0
	 * @return array
	 */
	public function get_meta_data() {
		return array_filter( $this->_meta_data, array( $this, 'filter_null_meta' ) );
	}

	/**
	 * Internal meta keys we don't want exposed as part of meta_data. This is in
	 * addition to all data props with _ prefix.
	 * @since 2.6.0
	 * @return array
	 */
	protected function prefix_key( $key ) {
		return '_' === substr( $key, 0, 1 ) ? $key : '_' . $key;
	}

	/**
	 * Internal meta keys we don't want exposed as part of meta_data. This is in
	 * addition to all data props with _ prefix.
	 * @since 2.6.0
	 * @return array
	 */
	protected function get_internal_meta_keys() {
		return array_merge( array_map( array( $this, 'prefix_key' ), array_keys( $this->_data ) ), $this->_internal_meta_keys );
	}

	/**
	 * Get Meta Data by Key.
	 * @since 2.6.0
	 * @param  string $key
	 * @param  bool $single return first found meta with key, or all with $key
	 * @return mixed
	 */
	public function get_meta( $key = '', $single = true ) {
		$array_keys = array_keys( wp_list_pluck( $this->get_meta_data(), 'key' ), $key );
		$value    = '';

		if ( ! empty( $array_keys ) ) {
			if ( $single ) {
				$value = $this->_meta_data[ current( $array_keys ) ]->value;
			} else {
				$value = array_intersect_key( $this->_meta_data, array_flip( $array_keys ) );
			}
		}

		return $value;
	}

	/**
	 * Set all meta data from array.
	 * @since 2.6.0
	 * @param array $data Key/Value pairs
	 */
	public function set_meta_data( $data ) {
		if ( ! empty( $data ) && is_array( $data ) ) {
			foreach ( $data as $meta ) {
				$meta = (array) $meta;
				if ( isset( $meta['key'], $meta['value'], $meta['id'] ) ) {
					$this->_meta_data[] = (object) array(
						'id'    => $meta['id'],
						'key'   => $meta['key'],
						'value' => $meta['value'],
					);
				}
			}
		}
	}

	/**
	 * Add meta data.
	 * @since 2.6.0
	 * @param string $key Meta key
	 * @param string $value Meta value
	 * @param bool $unique Should this be a unique key?
	 */
	public function add_meta_data( $key, $value, $unique = false ) {
		if ( $unique ) {
			$this->delete_meta_data( $key );
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
		}
		$this->_meta_data[] = (object) array(
			'key'   => $key,
			'value' => $value,
		);
	}

	/**
	 * Update meta data by key or ID, if provided.
	 * @since 2.6.0
	 * @param  string $key
	 * @param  string $value
	 * @param  int $meta_id
	 */
	public function update_meta_data( $key, $value, $meta_id = '' ) {
		$array_key = '';
		if ( $meta_id ) {
			$array_key = array_keys( wp_list_pluck( $this->_meta_data, 'id' ), $meta_id );
		}
		if ( $array_key ) {
			$this->_meta_data[ current( $array_key ) ] = (object) array(
				'id'    => $meta_id,
				'key'   => $key,
				'value' => $value,
			);
		} else {
			$this->add_meta_data( $key, $value, true );
		}
	}

	/**
	 * Delete meta data.
	 * @since 2.6.0
	 * @param array $key Meta key
	 */
	public function delete_meta_data( $key ) {

		$array_keys = array_keys( wp_list_pluck( $this->_meta_data, 'key' ), $key );
		if ( $array_keys ) {

			foreach ( $array_keys as $array_key ) {
				$this->_meta_data[ $array_key ]->value = null;
			}
		}
	}

	/**
	 * Delete meta data.
	 * @since 2.6.0
	 * @param int $mid Meta ID
	 */
	public function delete_meta_data_by_mid( $mid ) {

		$array_keys         = array_keys( wp_list_pluck( $this->_meta_data, 'id' ), $mid );
		if ( $array_keys ) {

			foreach ( $array_keys as $array_key ) {
				$this->_meta_data[ $array_key ]->value = null;
			}
		}
	}

	/**
	 * Read Meta Data from the database. Ignore any internal properties.
	 * @since 2.6.0
	 */
	protected function read_meta_data() {
		$this->_meta_data = array();
		$cache_loaded     = false;

		if ( ! $this->get_id() ) {
			return;
		}

		if ( ! empty( $this->_cache_group ) ) {
			$cache_key   = WC_Cache_Helper::get_cache_prefix( $this->_cache_group ) . $this->get_id();
			$cached_meta = wp_cache_get( $cache_key, $this->_cache_group );

			if ( false !== $cached_meta ) {
				$this->_meta_data = $cached_meta;
				$cache_loaded = true;
			}
		}

		if ( ! $cache_loaded ) {
			global $wpdb;
			$db_info = $this->_get_db_info();
			$raw_meta_data = $wpdb->get_results( $wpdb->prepare( "
				SELECT " . $db_info['meta_id_field'] . ", meta_key, meta_value
				FROM " . $db_info['table'] . "
				WHERE " . $db_info['object_id_field'] . "=%d AND meta_key NOT LIKE 'wp\_%%' ORDER BY " . $db_info['meta_id_field'] . "
			", $this->get_id() ) );

			if ( $raw_meta_data ) {
				foreach ( $raw_meta_data as $meta ) {
					if ( in_array( $meta->meta_key, $this->get_internal_meta_keys() ) ) {
						continue;
					}
					$this->_meta_data[] = (object) array(
						'id'    => (int) $meta->{ $db_info['meta_id_field'] },
						'key'   => $meta->meta_key,
						'value' => maybe_unserialize( $meta->meta_value ),
					);
				}
			}

			if ( ! empty( $this->_cache_group ) ) {
				wp_cache_set( $cache_key, $this->_meta_data, $this->_cache_group );
			}
		}
	}

	/**
	 * Update Meta Data in the database.
	 * @since 2.6.0
	 */
	protected function save_meta_data() {
		foreach ( $this->_meta_data as $array_key => $meta ) {
			if ( is_null( $meta->value ) ) {
				if ( ! empty( $meta->id ) ) {
					delete_metadata_by_mid( $this->_meta_type, $meta->id );
				}
			} elseif ( empty( $meta->id ) ) {
				$new_meta_id = add_metadata( $this->_meta_type, $this->get_id(), $meta->key, $meta->value, false );
				$this->_meta_data[ $array_key ]->id = $new_meta_id;
			} else {
				update_metadata_by_mid( $this->_meta_type, $meta->id, $meta->value, $meta->key );
			}
		}

		if ( ! empty( $this->_cache_group ) ) {
			WC_Cache_Helper::incr_cache_prefix( $this->_cache_group );
		}
		$this->read_meta_data();
	}

	/**
	 * Table structure is slightly different between meta types, this function will return what we need to know.
	 * @since 2.6.0
	 * @return array Array elements: table, object_id_field, meta_id_field
	 */
	protected function _get_db_info() {
		global $wpdb;

		$meta_id_field   = 'meta_id'; // for some reason users calls this umeta_id so we need to track this as well.
		$table           = $wpdb->prefix;

		// If we are dealing with a type of metadata that is not a core type, the table should be prefixed.
		if ( ! in_array( $this->_meta_type, array( 'post', 'user', 'comment', 'term' ) ) ) {
			$table .= 'woocommerce_';
		}

		$table .= $this->_meta_type . 'meta';
		$object_id_field = $this->_meta_type . '_id';

		// Figure out our field names.
		if ( 'user' === $this->_meta_type ) {
			$meta_id_field   = 'umeta_id';
		}

		if ( ! empty( $this->object_id_field_for_meta ) ) {
			$object_id_field = $this->object_id_field_for_meta;
		}

		return array(
			'table'           => $table,
			'object_id_field' => $object_id_field,
			'meta_id_field'   => $meta_id_field,
		);
	}

	/**
	 * Set all props to default values.
	 */
	protected function set_defaults() {
		$this->_data = $this->_default_data;
	}

	/**
	 * Set a collection of props in one go, collect any errors, and return the result.
	 * @param array $props Key value pairs to set. Key is the prop and should map to a setter function name.
	 * @return WP_Error|bool
	 */
	public function set_props( $props ) {
		$errors = new WP_Error();

		foreach ( $props as $prop => $value ) {
			try {
				$setter = "set_$prop";
				if ( ! is_null( $value ) && is_callable( array( $this, $setter ) ) ) {
					$this->{$setter}( $value );
				}
			} catch ( WC_Data_Exception $e ) {
				$errors->add( $e->getErrorCode(), $e->getMessage() );
			}
		}

		return sizeof( $errors->get_error_codes() ) ? $errors : true;
	}

	/**
	 * When invalid data is found, throw an exception unless reading from the DB.
	 * @param string $error_code Error code.
	 * @param string $error_message Error message.
	 * @throws WC_Data_Exception
	 */
	protected function error( $error_code, $error_message ) {
		throw new WC_Data_Exception( $error_code, $error_message );
	}
}


1		<?php
2		if ( ! defined( 'ABSPATH' ) ) {
3		exit;
4		}
5
6		/**
7		* Abstract WC Data Class
8		*
9		* Implemented by classes using the same CRUD(s) pattern.
10		*
11		* @version 2.6.0
12		* @package WooCommerce/Abstracts
13		* @category Abstract Class
14		* @author WooThemes
15		*/
16		abstract class WC_Data {
17
18		/**
19		* Core data for this object. Name value pairs (name + default value).
20		* @var array
21		*/
22		protected $_data = array();
23
24		/**
25		* Set to _data on construct so we can track and reset data if needed.
26		* @var array
27		*/
28		protected $_default_data = array();
29
30		/**
31		* Stores meta in cache for future reads.
32		* A group must be set to to enable caching.
33		* @var string
34		*/
35		protected $_cache_group = '';
36
37		/**
38		* Meta type. This should match up with
39		* the types avaiable at https://codex.wordpress.org/Function_Reference/add_metadata.
40		* WP defines 'post', 'user', 'comment', and 'term'.
41		*/
42		protected $_meta_type = 'post';
43
44		/**
45		* This only needs set if you are using a custom metadata type (for example payment tokens.
46		* This should be the name of the field your table uses for associating meta with objects.
47		* For example, in payment_tokenmeta, this would be payment_token_id.
48		* @var string
49		*/
50		protected $object_id_field_for_meta = '';
51
52		/**
53		* Stores additonal meta data.
54		* @var array
55		*/
56		protected $_meta_data = array();
57
58		/**
59		* Internal meta keys we don't want exposed for the object.
60		* @var array
61		*/
62		protected $_internal_meta_keys = array();
63
64		/**
65		* Default constructor.
66		* @param int\|object\|array $read ID to load from the DB (optional) or already queried data.
67		*/
68		public function __construct( $read = 0 ) {
69		$this->_default_data = $this->_data;
70		}
71
72		/**
73		* Returns the unique ID for this object.
74		* @return int
75		*/
76		abstract public function get_id();
77
78		/**
79		* Creates new object in the database.
80		*/
81		abstract public function create();
82
83		/**
84		* Read object from the database.
85		* @param int ID of the object to load.
86		*/
87		abstract public function read( $id );
88
89		/**
90		* Updates object data in the database.
91		*/
92		abstract public function update();
93
94		/**
95		* Updates object data in the database.
96		*/
97		abstract public function delete();
98
99		/**
100		* Save should create or update based on object existance.
101		*/
102		abstract public function save();
103
104		/**
105		* Change data to JSON format.
106		* @return string Data in JSON format.
107		*/
108		public function __toString() {
109		return json_encode( $this->get_data() );
110		}
111
112		/**
113		* Returns all data for this object.
114		* @return array
115		*/
116		public function get_data() {
117		return array_merge( $this->_data, array( 'meta_data' => $this->get_meta_data() ) );
118		}
119
120		/**
121		* Filter null meta values from array.
122		* @return bool
123		*/
124		protected function filter_null_meta( $meta ) {
125		return ! is_null( $meta->value );
126		}
127
128		/**
129		* Get All Meta Data.
130		* @since 2.6.0
131		* @return array
132		*/
133		public function get_meta_data() {
134		return array_filter( $this->_meta_data, array( $this, 'filter_null_meta' ) );
135		}
136
137		/**
138		* Internal meta keys we don't want exposed as part of meta_data. This is in
139		* addition to all data props with _ prefix.
140		* @since 2.6.0
141		* @return array
142		*/
143		protected function prefix_key( $key ) {
144		return '_' === substr( $key, 0, 1 ) ? $key : '_' . $key;
145		}
146
147		/**
148		* Internal meta keys we don't want exposed as part of meta_data. This is in
149		* addition to all data props with _ prefix.
150		* @since 2.6.0
151		* @return array
152		*/
153		protected function get_internal_meta_keys() {
154		return array_merge( array_map( array( $this, 'prefix_key' ), array_keys( $this->_data ) ), $this->_internal_meta_keys );
155		}
156
157		/**
158		* Get Meta Data by Key.
159		* @since 2.6.0
160		* @param string $key
161		* @param bool $single return first found meta with key, or all with $key
162		* @return mixed
163		*/
164		public function get_meta( $key = '', $single = true ) {
165		$array_keys = array_keys( wp_list_pluck( $this->get_meta_data(), 'key' ), $key );
166		$value = '';
167
168		if ( ! empty( $array_keys ) ) {
169		if ( $single ) {
170		$value = $this->_meta_data[ current( $array_keys ) ]->value;
171		} else {
172		$value = array_intersect_key( $this->_meta_data, array_flip( $array_keys ) );
173		}
174		}
175
176		return $value;
177		}
178
179		/**
180		* Set all meta data from array.
181		* @since 2.6.0
182		* @param array $data Key/Value pairs
183		*/
184		public function set_meta_data( $data ) {
185		if ( ! empty( $data ) && is_array( $data ) ) {
186		foreach ( $data as $meta ) {
187		$meta = (array) $meta;
188		if ( isset( $meta['key'], $meta['value'], $meta['id'] ) ) {
189		$this->_meta_data[] = (object) array(
190		'id' => $meta['id'],
191		'key' => $meta['key'],
192		'value' => $meta['value'],
193		);
194		}
195		}
196		}
197		}
198
199		/**
200		* Add meta data.
201		* @since 2.6.0
202		* @param string $key Meta key
203		* @param string $value Meta value
204		* @param bool $unique Should this be a unique key?
205		*/
206		public function add_meta_data( $key, $value, $unique = false ) {
207		if ( $unique ) {
208		$this->delete_meta_data( $key );
		0 ignored issues – show Documentation introduced 2016-08-25 10:05 UTC by Report Bug Copy Issue Report `$key` is of type `string`, but the function expects a `array`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
209		}
210		$this->_meta_data[] = (object) array(
211		'key' => $key,
212		'value' => $value,
213		);
214		}
215
216		/**
217		* Update meta data by key or ID, if provided.
218		* @since 2.6.0
219		* @param string $key
220		* @param string $value
221		* @param int $meta_id
222		*/
223		public function update_meta_data( $key, $value, $meta_id = '' ) {
224		$array_key = '';
225		if ( $meta_id ) {
226		$array_key = array_keys( wp_list_pluck( $this->_meta_data, 'id' ), $meta_id );
227		}
228		if ( $array_key ) {
229		$this->_meta_data[ current( $array_key ) ] = (object) array(
230		'id' => $meta_id,
231		'key' => $key,
232		'value' => $value,
233		);
234		} else {
235		$this->add_meta_data( $key, $value, true );
236		}
237		}
238
239		/**
240		* Delete meta data.
241		* @since 2.6.0
242		* @param array $key Meta key
243		*/
244	View Code Duplication	public function delete_meta_data( $key ) {
		0 ignored issues – show Duplication introduced 2016-08-25 10:05 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
245		$array_keys = array_keys( wp_list_pluck( $this->_meta_data, 'key' ), $key );
246		if ( $array_keys ) {
		0 ignored issues – show Bug Best Practice introduced 2016-08-25 10:05 UTC by Report Bug Copy Issue Report The expression `$array_keys` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
247		foreach ( $array_keys as $array_key ) {
248		$this->_meta_data[ $array_key ]->value = null;
249		}
250		}
251		}
252
253		/**
254		* Delete meta data.
255		* @since 2.6.0
256		* @param int $mid Meta ID
257		*/
258	View Code Duplication	public function delete_meta_data_by_mid( $mid ) {
		0 ignored issues – show Duplication introduced 2016-08-25 10:05 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
259		$array_keys = array_keys( wp_list_pluck( $this->_meta_data, 'id' ), $mid );
260		if ( $array_keys ) {
		0 ignored issues – show Bug Best Practice introduced 2016-03-18 19:36 UTC by Report Bug Copy Issue Report The expression `$array_keys` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
261		foreach ( $array_keys as $array_key ) {
262		$this->_meta_data[ $array_key ]->value = null;
263		}
264		}
265		}
266
267		/**
268		* Read Meta Data from the database. Ignore any internal properties.
269		* @since 2.6.0
270		*/
271		protected function read_meta_data() {
272		$this->_meta_data = array();
273		$cache_loaded = false;
274
275		if ( ! $this->get_id() ) {
276		return;
277		}
278
279		if ( ! empty( $this->_cache_group ) ) {
280		$cache_key = WC_Cache_Helper::get_cache_prefix( $this->_cache_group ) . $this->get_id();
281		$cached_meta = wp_cache_get( $cache_key, $this->_cache_group );
282
283		if ( false !== $cached_meta ) {
284		$this->_meta_data = $cached_meta;
285		$cache_loaded = true;
286		}
287		}
288
289		if ( ! $cache_loaded ) {
290		global $wpdb;
291		$db_info = $this->_get_db_info();
292		$raw_meta_data = $wpdb->get_results( $wpdb->prepare( "
293		SELECT " . $db_info['meta_id_field'] . ", meta_key, meta_value
294		FROM " . $db_info['table'] . "
295		WHERE " . $db_info['object_id_field'] . "=%d AND meta_key NOT LIKE 'wp\_%%' ORDER BY " . $db_info['meta_id_field'] . "
296		", $this->get_id() ) );
297
298		if ( $raw_meta_data ) {
299		foreach ( $raw_meta_data as $meta ) {
300		if ( in_array( $meta->meta_key, $this->get_internal_meta_keys() ) ) {
301		continue;
302		}
303		$this->_meta_data[] = (object) array(
304		'id' => (int) $meta->{ $db_info['meta_id_field'] },
305		'key' => $meta->meta_key,
306		'value' => maybe_unserialize( $meta->meta_value ),
307		);
308		}
309		}
310
311		if ( ! empty( $this->_cache_group ) ) {
312		wp_cache_set( $cache_key, $this->_meta_data, $this->_cache_group );
313		}
314		}
315		}
316
317		/**
318		* Update Meta Data in the database.
319		* @since 2.6.0
320		*/
321		protected function save_meta_data() {
322		foreach ( $this->_meta_data as $array_key => $meta ) {
323		if ( is_null( $meta->value ) ) {
324		if ( ! empty( $meta->id ) ) {
325		delete_metadata_by_mid( $this->_meta_type, $meta->id );
326		}
327		} elseif ( empty( $meta->id ) ) {
328		$new_meta_id = add_metadata( $this->_meta_type, $this->get_id(), $meta->key, $meta->value, false );
329		$this->_meta_data[ $array_key ]->id = $new_meta_id;
330		} else {
331		update_metadata_by_mid( $this->_meta_type, $meta->id, $meta->value, $meta->key );
332		}
333		}
334
335		if ( ! empty( $this->_cache_group ) ) {
336		WC_Cache_Helper::incr_cache_prefix( $this->_cache_group );
337		}
338		$this->read_meta_data();
339		}
340
341		/**
342		* Table structure is slightly different between meta types, this function will return what we need to know.
343		* @since 2.6.0
344		* @return array Array elements: table, object_id_field, meta_id_field
345		*/
346		protected function _get_db_info() {
347		global $wpdb;
348
349		$meta_id_field = 'meta_id'; // for some reason users calls this umeta_id so we need to track this as well.
350		$table = $wpdb->prefix;
351
352		// If we are dealing with a type of metadata that is not a core type, the table should be prefixed.
353		if ( ! in_array( $this->_meta_type, array( 'post', 'user', 'comment', 'term' ) ) ) {
354		$table .= 'woocommerce_';
355		}
356
357		$table .= $this->_meta_type . 'meta';
358		$object_id_field = $this->_meta_type . '_id';
359
360		// Figure out our field names.
361		if ( 'user' === $this->_meta_type ) {
362		$meta_id_field = 'umeta_id';
363		}
364
365		if ( ! empty( $this->object_id_field_for_meta ) ) {
366		$object_id_field = $this->object_id_field_for_meta;
367		}
368
369		return array(
370		'table' => $table,
371		'object_id_field' => $object_id_field,
372		'meta_id_field' => $meta_id_field,
373		);
374		}
375
376		/**
377		* Set all props to default values.
378		*/
379		protected function set_defaults() {
380		$this->_data = $this->_default_data;
381		}
382
383		/**
384		* Set a collection of props in one go, collect any errors, and return the result.
385		* @param array $props Key value pairs to set. Key is the prop and should map to a setter function name.
386		* @return WP_Error\|bool
387		*/
388		public function set_props( $props ) {
389		$errors = new WP_Error();
390
391		foreach ( $props as $prop => $value ) {
392		try {
393		$setter = "set_$prop";
394		if ( ! is_null( $value ) && is_callable( array( $this, $setter ) ) ) {
395		$this->{$setter}( $value );
396		}
397		} catch ( WC_Data_Exception $e ) {
398		$errors->add( $e->getErrorCode(), $e->getMessage() );
399		}
400		}
401
402		return sizeof( $errors->get_error_codes() ) ? $errors : true;
403		}
404
405		/**
406		* When invalid data is found, throw an exception unless reading from the DB.
407		* @param string $error_code Error code.
408		* @param string $error_message Error message.
409		* @throws WC_Data_Exception
410		*/
411		protected function error( $error_code, $error_message ) {
412		throw new WC_Data_Exception( $error_code, $error_message );
413		}
414		}
415

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