abstract class FeedsProcessor in Feeds 7.2
Same name and namespace in other branches
- 6 plugins/FeedsProcessor.inc \FeedsProcessor
- 7 plugins/FeedsProcessor.inc \FeedsProcessor
Abstract class, defines interface for processors.
Hierarchy
- class \FeedsConfigurable
- class \FeedsPlugin implements FeedsSourceInterface
- class \FeedsProcessor
- class \FeedsPlugin implements FeedsSourceInterface
Expanded class hierarchy of FeedsProcessor
3 string references to 'FeedsProcessor'
- FeedsPlugin::typeOf in plugins/
FeedsPlugin.inc - Determines the type of a plugin.
- hook_feeds_plugins in ./
feeds.api.php - Declare Feeds plugins.
- _feeds_feeds_plugins in ./
feeds.plugins.inc - Break out for feeds_feed_plugins().
File
- plugins/
FeedsProcessor.inc, line 37 - Contains FeedsProcessor and related classes.
View source
abstract class FeedsProcessor extends FeedsPlugin {
/**
* Implements FeedsPlugin::pluginType().
*/
public function pluginType() {
return 'processor';
}
/**
* @defgroup entity_api_wrapper Entity API wrapper.
*/
/**
* Entity type this processor operates on.
*/
public abstract function entityType();
/**
* Bundle type this processor operates on.
*
* Defaults to the entity type for entities that do not define bundles.
*
* @return string|null
* The bundle type this processor operates on, or NULL if it is undefined.
*/
public function bundle() {
return $this->config['bundle'];
}
/**
* Provides a list of bundle options for use in select lists.
*
* @return array
* A keyed array of bundle => label.
*/
public function bundleOptions() {
$options = array();
foreach (field_info_bundles($this
->entityType()) as $bundle => $info) {
if (!empty($info['label'])) {
$options[$bundle] = $info['label'];
}
else {
$options[$bundle] = $bundle;
}
}
return $options;
}
/**
* Provides a list of languages available on the site.
*
* @return array
* A keyed array of language_key => language_name. For example:
* 'en' => 'English'.
*/
public function languageOptions() {
$languages = array(
LANGUAGE_NONE => t('Language neutral'),
);
$language_list = language_list('enabled');
if (!empty($language_list[1])) {
foreach ($language_list[1] as $language) {
$languages[$language->language] = $language->name;
}
}
return $languages;
}
/**
* Create a new entity.
*
* @param FeedsSource $source
* The feeds source that spawns this entity.
*
* @return object
* A new entity object.
*/
protected function newEntity(FeedsSource $source) {
$entity = new stdClass();
$info = $this
->entityInfo();
if (!empty($info['entity keys']['language'])) {
$entity->{$info['entity keys']['language']} = $this
->entityLanguage();
}
return $entity;
}
/**
* Loads an existing entity.
*
* @param FeedsSource $source
* The feeds source that spawns this entity.
* @param mixed $entity_id
* The id of the entity to load.
*
* @return object
* A new entity object.
*
* @todo We should be able to batch load these, if we found all of the
* existing ids first.
*/
protected function entityLoad(FeedsSource $source, $entity_id) {
$info = $this
->entityInfo();
if ($this->config['update_existing'] == FEEDS_UPDATE_EXISTING) {
$entities = entity_load($this
->entityType(), array(
$entity_id,
));
$entity = reset($entities);
}
else {
$args = array(
':entity_id' => $entity_id,
);
$table = db_escape_table($info['base table']);
$key = db_escape_field($info['entity keys']['id']);
$entity = db_query("SELECT * FROM {" . $table . "} WHERE {$key} = :entity_id", $args)
->fetchObject();
}
if ($entity && !empty($info['entity keys']['language'])) {
$entity->{$info['entity keys']['language']} = $this
->entityLanguage();
}
return $entity;
}
/**
* Validates an entity.
*
* @param object $entity
* The entity to validate.
* @param FeedsSource $source
* (optional) The source to import from.
*
* @throws FeedsValidationException $e
* Thrown if validation fails.
*/
protected function entityValidate($entity, FeedsSource $source = NULL) {
$info = $this
->entityInfo();
if (!empty($info['entity keys']['language'])) {
// Ensure that a valid language is always set.
$key = $info['entity keys']['language'];
$languages = $this
->languageOptions();
if (empty($entity->{$key}) || !isset($languages[$entity->{$key}])) {
$entity->{$key} = $this
->entityLanguage();
}
}
// Perform field validation if entity is fieldable.
if (!empty($info['fieldable'])) {
try {
$this
->validateFields($entity);
} catch (FieldValidationException $e) {
$errors = array();
// Unravel the errors inside the FieldValidationException.
foreach ($e->errors as $field_errors) {
$errors = array_merge($errors, $this
->unravelFieldValidationExceptionErrors($field_errors));
}
// Compose error message. If available, use the entity label to indicate
// which item failed. Fallback to the GUID value (if available) or else
// no indication.
$label = entity_label($this
->entityType(), $entity);
if ($label || $label === '0' || $label === 0) {
$message = t("@error in item '@label':", array(
'@error' => $e
->getMessage(),
'@label' => $label,
));
}
elseif (!empty($entity->feeds_item->guid)) {
$message = t("@error in item '@guid':", array(
'@error' => $e
->getMessage(),
'@guid' => $entity->feeds_item->guid,
));
}
else {
$message = $e
->getMessage();
}
// Compose the final error message and throw exception.
$message .= theme('item_list', array(
'items' => $errors,
));
throw new FeedsValidationException($message);
}
}
}
/**
* Validates fields of an entity.
*
* This is mostly a copy of the field_attach_validate() function. The
* difference is that field_attach_validate() validates *all* fields on an
* entity, while Feeds only validates the fields where the user mapped to.
*
* @param object $entity
* The entity for which the field to validate.
*
* @throws FieldValidationException
* If validation errors are found, a FieldValidationException is thrown. The
* 'errors' property contains the array of errors, keyed by field name,
* language and delta.
*/
protected function validateFields($entity) {
$entity_type = $this
->entityType();
// Get fields for the entity type we are mapping to.
$fields = field_info_instances($entity_type, $this
->bundle());
// Get targets.
$targets = $this
->getCachedTargets();
$errors = array();
$null = NULL;
// Validate all fields that we are mapping to.
foreach ($this
->getMappings() as $mapping) {
// Get real target name.
if (isset($targets[$mapping['target']]['real_target'])) {
$target_name = $targets[$mapping['target']]['real_target'];
}
else {
$target_name = $mapping['target'];
}
if (isset($fields[$target_name])) {
// Validate this field.
_field_invoke_default('validate', $entity_type, $entity, $errors, $null, array(
'field_name' => $target_name,
));
_field_invoke('validate', $entity_type, $entity, $errors, $null, array(
'field_name' => $target_name,
));
}
}
// Let other modules validate the entity.
// Avoid module_invoke_all() to let $errors be taken by reference.
foreach (module_implements('field_attach_validate') as $module) {
$function = $module . '_field_attach_validate';
$function($entity_type, $entity, $errors);
}
if ($errors) {
throw new FieldValidationException($errors);
}
}
/**
* Helper function to unravel error messages hidden in a
* FieldValidationException.
*
* @param array $field_item_errors
* The errors for a single field item.
*
* @return array
* The unraveled error messages.
*/
protected function unravelFieldValidationExceptionErrors(array $field_item_errors) {
$errors = array();
foreach ($field_item_errors as $field_item_error) {
if (isset($field_item_error['message'])) {
// Found the error message!
$errors[] = $field_item_error['message'];
}
elseif (is_array($field_item_error)) {
// Error message is hidden deeper in the tree.
$errors = array_merge($errors, $this
->unravelFieldValidationExceptionErrors($field_item_error));
}
}
return $errors;
}
/**
* Access check for saving an entity.
*
* @param object $entity
* The entity to be saved.
*
* @throws FeedsAccessException $e
* If the access check fails.
*/
protected function entitySaveAccess($entity) {
}
/**
* Saves an entity.
*
* @param object $entity
* The entity to be saved.
*/
protected abstract function entitySave($entity);
/**
* Deletes a series of entities.
*
* @param array $entity_ids
* Array of unique identity ids to be deleted.
*/
protected abstract function entityDeleteMultiple($entity_ids);
/**
* Wrapper around entity_get_info().
*
* The entity_get_info() function is wrapped so that extending classes can
* override it and add more entity information.
*
* Allowed additional keys:
* - label plural
* the plural label of an entity type.
*/
protected function entityInfo() {
$info = entity_get_info($this
->entityType());
// Entity module has defined the plural label in "plural label" instead of
// "label plural". So if "plural label" is defined, this will have priority
// over "label plural".
if (isset($info['plural label'])) {
$info['label plural'] = $info['plural label'];
}
return $info;
}
/**
* Returns the current language for entities.
*
* This checks if the configuration value is valid.
*
* @return string
* The current language code.
*/
protected function entityLanguage() {
if (!module_exists('locale')) {
// language_list() may return languages even if the locale module is
// disabled. See https://www.drupal.org/node/173227 why.
// When the locale module is disabled, there are no selectable languages
// in the UI, so the content should be imported in LANGUAGE_NONE.
return LANGUAGE_NONE;
}
$languages = $this
->languageOptions();
return isset($languages[$this->config['language']]) ? $this->config['language'] : LANGUAGE_NONE;
}
/**
* @}
*/
/**
* Process the result of the parsing stage.
*
* @param FeedsSource $source
* Source information about this import.
* @param FeedsParserResult $parser_result
* The result of the parsing stage.
*/
public function process(FeedsSource $source, FeedsParserResult $parser_result) {
$state = $source
->state(FEEDS_PROCESS);
if (!isset($state->removeList) && $parser_result->items) {
$this
->initEntitiesToBeRemoved($source, $state);
}
$skip_new = $this->config['insert_new'] == FEEDS_SKIP_NEW;
$skip_existing = $this->config['update_existing'] == FEEDS_SKIP_EXISTING;
while ($item = $parser_result
->shiftItem()) {
// Check if this item already exists.
$entity_id = $this
->existingEntityId($source, $parser_result);
// If it's included in the feed, it must not be removed on clean.
if ($entity_id) {
unset($state->removeList[$entity_id]);
}
module_invoke_all('feeds_before_update', $source, $item, $entity_id);
// If it exists, and we are not updating, or if it does not exist, and we
// are not inserting, pass onto the next item.
if ($entity_id && $skip_existing || !$entity_id && $skip_new) {
continue;
}
try {
$hash = $this
->hash($item);
$changed = $hash !== $this
->getHash($entity_id);
// Do not proceed if the item exists, has not changed, and we're not
// forcing the update.
if ($entity_id && !$changed && !$this->config['skip_hash_check']) {
continue;
}
// Load an existing entity.
if ($entity_id) {
$entity = $this
->entityLoad($source, $entity_id);
// The feeds_item table is always updated with the info for the most
// recently processed entity. The only carryover is the entity_id.
$this
->newItemInfo($entity, $source->feed_nid, $hash);
$entity->feeds_item->entity_id = $entity_id;
$entity->feeds_item->is_new = FALSE;
}
else {
$entity = $this
->newEntity($source);
$this
->newItemInfo($entity, $source->feed_nid, $hash);
}
// Set property and field values.
$this
->map($source, $parser_result, $entity);
// Allow modules to alter the entity before validating.
module_invoke_all('feeds_prevalidate', $source, $entity, $item, $entity_id);
$this
->entityValidate($entity, $source);
// Allow modules to alter the entity before saving.
module_invoke_all('feeds_presave', $source, $entity, $item, $entity_id);
if (module_exists('rules')) {
rules_invoke_event('feeds_import_' . $source
->importer()->id, $entity);
}
// Enable modules to skip saving at all.
if (!empty($entity->feeds_item->skip)) {
continue;
}
// This will throw an exception on failure.
$this
->entitySaveAccess($entity);
$this
->entitySave($entity);
// Allow modules to perform operations using the saved entity data.
// $entity contains the updated entity after saving.
module_invoke_all('feeds_after_save', $source, $entity, $item, $entity_id);
// Track progress.
if (empty($entity_id)) {
$state->created++;
}
else {
$state->updated++;
}
} catch (Exception $e) {
$state->failed++;
drupal_set_message($e
->getMessage(), 'warning');
list($message, $arguments) = $this
->createLogEntry($e, $entity, $item);
$source
->log('import', $message, $arguments, WATCHDOG_ERROR);
}
}
// Set messages if we're done.
if ($source
->progressImporting() != FEEDS_BATCH_COMPLETE) {
return;
}
// Remove not included items if needed.
// It depends on the implementation of the clean() method what will happen
// to items that were no longer in the source.
$this
->clean($state);
$info = $this
->entityInfo();
$tokens = array(
'@entity' => strtolower($info['label']),
'@entities' => strtolower($info['label plural']),
);
$messages = array();
if ($state->created) {
$messages[] = array(
'message' => format_plural($state->created, 'Created @number @entity.', 'Created @number @entities.', array(
'@number' => $state->created,
) + $tokens),
);
}
if ($state->updated) {
$messages[] = array(
'message' => format_plural($state->updated, 'Updated @number @entity.', 'Updated @number @entities.', array(
'@number' => $state->updated,
) + $tokens),
);
}
if ($state->unpublished) {
$messages[] = array(
'message' => format_plural($state->unpublished, 'Unpublished @number @entity.', 'Unpublished @number @entities.', array(
'@number' => $state->unpublished,
) + $tokens),
);
}
if ($state->blocked) {
$messages[] = array(
'message' => format_plural($state->blocked, 'Blocked @number @entity.', 'Blocked @number @entities.', array(
'@number' => $state->blocked,
) + $tokens),
);
}
if ($state->deleted) {
$messages[] = array(
'message' => format_plural($state->deleted, 'Removed @number @entity.', 'Removed @number @entities.', array(
'@number' => $state->deleted,
) + $tokens),
);
}
if ($state->failed) {
$messages[] = array(
'message' => format_plural($state->failed, 'Failed importing @number @entity.', 'Failed importing @number @entities.', array(
'@number' => $state->failed,
) + $tokens),
'level' => WATCHDOG_ERROR,
);
}
if (empty($messages)) {
$messages[] = array(
'message' => t('There are no new @entities.', array(
'@entities' => strtolower($info['label plural']),
)),
);
}
foreach ($messages as $message) {
drupal_set_message($message['message']);
$source
->log('import', $message['message'], array(), isset($message['level']) ? $message['level'] : WATCHDOG_INFO);
}
}
/**
* Initializes the list of entities to remove.
*
* This populates $state->removeList with all existing entities previously
* imported from the source.
*
* @param FeedsSource $source
* Source information about this import.
* @param FeedsState $state
* The FeedsState object for the given stage.
*/
protected function initEntitiesToBeRemoved(FeedsSource $source, FeedsState $state) {
$state->removeList = array();
// We fill it only if needed.
if ($this->config['update_non_existent'] == FEEDS_SKIP_NON_EXISTENT) {
return;
}
// Get the full list of entities for this source.
$entity_ids = db_select('feeds_item')
->fields('feeds_item', array(
'entity_id',
))
->condition('entity_type', $this
->entityType())
->condition('id', $this->id)
->condition('feed_nid', $source->feed_nid)
->condition('hash', $this->config['update_non_existent'], '<>')
->execute()
->fetchCol();
if (!$entity_ids) {
return;
}
$state->removeList = array_combine($entity_ids, $entity_ids);
}
/**
* Deletes entities which were not found during processing.
*
* @todo batch delete?
*
* @param FeedsState $state
* The FeedsState object for the given stage.
*/
protected function clean(FeedsState $state) {
// We clean only if needed.
if ($this->config['update_non_existent'] != FEEDS_DELETE_NON_EXISTENT) {
return;
}
if ($total = count($state->removeList)) {
$this
->entityDeleteMultiple($state->removeList);
$state->deleted += $total;
}
}
/**
* Removes all imported items for a source.
*
* @param FeedsSource $source
* Source information for this expiry. Implementers should only delete items
* pertaining to this source. The preferred way of determining whether an
* item pertains to a certain souce is by using $source->feed_nid. It is the
* processor's responsibility to store the feed_nid of an imported item in
* the processing stage.
*/
public function clear(FeedsSource $source) {
$state = $source
->state(FEEDS_PROCESS_CLEAR);
// Build base select statement.
$select = db_select('feeds_item')
->fields('feeds_item', array(
'entity_id',
))
->condition('entity_type', $this
->entityType())
->condition('id', $this->id)
->condition('feed_nid', $source->feed_nid);
// If there is no total, query it.
if (!$state->total) {
$state->total = $select
->countQuery()
->execute()
->fetchField();
}
// Delete a batch of entities.
$entity_ids = $select
->range(0, $this
->getLimit())
->execute()
->fetchCol();
$this
->entityDeleteMultiple($entity_ids);
// Report progress, take into account that we may not have deleted as many
// items as we have counted at first.
if ($deleted_count = count($entity_ids)) {
$state->deleted += $deleted_count;
$state
->progress($state->total, $state->deleted);
}
else {
$state
->progress($state->total, $state->total);
}
// Report results when done.
if ($source
->progressClearing() == FEEDS_BATCH_COMPLETE) {
$info = $this
->entityInfo();
if ($state->deleted) {
$message = format_plural($state->deleted, 'Deleted @number @entity', 'Deleted @number @entities', array(
'@number' => $state->deleted,
'@entity' => strtolower($info['label']),
'@entities' => strtolower($info['label plural']),
));
$source
->log('clear', $message, array(), WATCHDOG_INFO);
drupal_set_message($message);
}
else {
drupal_set_message(t('There are no @entities to be deleted.', array(
'@entities' => $info['label plural'],
)));
}
}
}
/**
* Report number of items that can be processed per call.
*
* 0 means 'unlimited'.
*
* If a number other than 0 is given, Feeds parsers that support batching
* will only deliver this limit to the processor.
*
* @see FeedsSource::getLimit()
* @see FeedsCSVParser::parse()
*/
public function getLimit() {
return variable_get('feeds_process_limit', FEEDS_PROCESS_LIMIT);
}
/**
* Deletes feed items older than REQUEST_TIME - $time.
*
* Do not invoke expire on a processor directly, but use
* FeedsSource::expire() instead.
*
* @param FeedsSource $source
* The source to expire entities for.
* @param int|null $time
* (optional) All items produced by this configuration that are older than
* REQUEST_TIME - $time should be deleted. If NULL, processor should use
* internal configuration. Defaults to NULL.
*
* @return float|null
* FEEDS_BATCH_COMPLETE if all items have been processed, null if expiring
* is disabled, a float between 0 and 0.99* indicating progress otherwise.
*
* @see FeedsSource::expire()
*/
public function expire(FeedsSource $source, $time = NULL) {
$state = $source
->state(FEEDS_PROCESS_EXPIRE);
if ($time === NULL) {
$time = $this
->expiryTime();
}
if ($time == FEEDS_EXPIRE_NEVER) {
return;
}
$select = $this
->expiryQuery($source, $time);
// If there is no total, query it.
if (!$state->total) {
$state->total = $select
->countQuery()
->execute()
->fetchField();
}
// Delete a batch of entities.
$entity_ids = $select
->range(0, $this
->getLimit())
->execute()
->fetchCol();
if ($entity_ids) {
$this
->entityDeleteMultiple($entity_ids);
$state->deleted += count($entity_ids);
$state
->progress($state->total, $state->deleted);
}
else {
$state
->progress($state->total, $state->total);
}
}
/**
* Returns a database query used to select entities to expire.
*
* Processor classes should override this method to set the age portion of the
* query.
*
* @param FeedsSource $source
* The feed source.
* @param int $time
* Delete entities older than this.
*
* @return SelectQuery
* A select query to execute.
*
* @see FeedsNodeProcessor::expiryQuery()
*/
protected function expiryQuery(FeedsSource $source, $time) {
// Build base select statement.
$info = $this
->entityInfo();
$id_key = $info['entity keys']['id'];
$select = db_select($info['base table'], 'e');
$select
->addField('e', $id_key);
$select
->join('feeds_item', 'fi', "e.{$id_key} = fi.entity_id");
$select
->condition('fi.entity_type', $this
->entityType());
$select
->condition('fi.id', $this->id);
$select
->condition('fi.feed_nid', $source->feed_nid);
return $select;
}
/**
* Counts the number of items imported by this processor.
*
* @return int
* The number of items imported by this processor.
*/
public function itemCount(FeedsSource $source) {
return db_query("SELECT count(*) FROM {feeds_item} WHERE id = :id AND entity_type = :entity_type AND feed_nid = :feed_nid", array(
':id' => $this->id,
':entity_type' => $this
->entityType(),
':feed_nid' => $source->feed_nid,
))
->fetchField();
}
/**
* Returns a statically cached version of the target mappings.
*
* @return array
* The targets for this importer.
*/
protected function getCachedTargets() {
$targets =& drupal_static('FeedsProcessor::getCachedTargets', array());
if (!isset($targets[$this->id])) {
$targets[$this->id] = $this
->getMappingTargets();
}
return $targets[$this->id];
}
/**
* Returns a statically cached version of the source mappings.
*
* @return array
* The sources for this importer.
*/
protected function getCachedSources() {
$sources =& drupal_static('FeedsProcessor::getCachedSources', array());
if (!isset($sources[$this->id])) {
$sources[$this->id] = feeds_importer($this->id)->parser
->getMappingSources();
if (is_array($sources[$this->id])) {
foreach ($sources[$this->id] as $source_key => $source) {
if (empty($source['callback']) || !is_callable($source['callback'])) {
unset($sources[$this->id][$source_key]['callback']);
}
}
}
}
return $sources[$this->id];
}
/**
* Execute mapping on an item.
*
* This method encapsulates the central mapping functionality. When an item is
* processed, it is passed through map() where the properties of $source_item
* are mapped onto $target_item following the processor's mapping
* configuration.
*
* For each mapping FeedsParser::getSourceElement() is executed to retrieve
* the source element, then FeedsProcessor::setTargetElement() is invoked
* to populate the target item properly. Alternatively a
* hook_x_targets_alter() may have specified a callback for a mapping target
* in which case the callback is asked to populate the target item instead of
* FeedsProcessor::setTargetElement().
*
* @ingroup mappingapi
*
* @see hook_feeds_parser_sources_alter()
* @see hook_feeds_processor_targets()
* @see hook_feeds_processor_targets_alter()
*/
protected function map(FeedsSource $source, FeedsParserResult $result, $target_item = NULL) {
$targets = $this
->getCachedTargets();
// Get fields for the entity type we are mapping to.
$fields = field_info_instances($this
->entityType(), $this
->bundle());
if (empty($target_item)) {
$target_item = array();
}
// Many mappers add to existing fields rather than replacing them. Hence we
// need to clear target elements of each item before mapping in case we are
// mapping on a prepopulated item such as an existing node.
foreach ($this
->getMappings() as $mapping) {
if (isset($targets[$mapping['target']]['real_target'])) {
$target_name = $targets[$mapping['target']]['real_target'];
}
else {
$target_name = $mapping['target'];
}
// If the target is a field empty the value for the targeted language
// only.
// In all other cases, just empty the target completely.
if (isset($fields[$target_name])) {
// Empty the target for the specified language.
$target_item->{$target_name}[$mapping['language']] = array();
}
else {
// Empty the whole target.
$target_item->{$target_name} = NULL;
}
}
// This is where the actual mapping happens: For every mapping we invoke
// the parser's getSourceElement() method to retrieve the value of the
// source element and pass it to the processor's setTargetElement() to stick
// it on the right place of the target item.
foreach ($this
->getMappings() as $mapping) {
$value = $this
->getSourceValue($source, $result, $mapping['source']);
$this
->mapToTarget($source, $mapping['target'], $target_item, $value, $mapping);
}
return $target_item;
}
/**
* Returns the values from the parser, or callback.
*
* @param FeedsSource $source
* The feed source.
* @param FeedsParserResult $result
* The parser result.
* @param string $source_key
* The current key being processed.
*
* @return mixed
* A value, or a list of values.
*/
protected function getSourceValue(FeedsSource $source, FeedsParserResult $result, $source_key) {
$sources = $this
->getCachedSources();
if (isset($sources[$source_key]['callback'])) {
return call_user_func($sources[$source_key]['callback'], $source, $result, $source_key);
}
return feeds_importer($this->id)->parser
->getSourceElement($source, $result, $source_key);
}
/**
* Maps values onto the target item.
*
* @param FeedsSource $source
* The feed source.
* @param mixed &$target_item
* The target item to apply values into.
* @param mixed $value
* A value, or a list of values.
* @param array $mapping
* The mapping configuration.
*/
protected function mapToTarget(FeedsSource $source, $target, &$target_item, $value, array $mapping) {
$targets = $this
->getCachedTargets();
// Map the source element's value to the target.
// If the mapping specifies a callback method, use the callback instead of
// setTargetElement().
if (isset($targets[$target]['callback'])) {
// All target callbacks expect an array.
if (!is_array($value)) {
$value = array(
$value,
);
}
call_user_func($targets[$target]['callback'], $source, $target_item, $target, $value, $mapping);
}
else {
$this
->setTargetElement($source, $target_item, $target, $value, $mapping);
}
}
/**
* Returns the time in seconds after which items should be removed.
*
* If expiry of items isn't supported, FEEDS_EXPIRE_NEVER is returned.
*
* By default, expiring items isn't supported. Processors that want to support
* this feature, should override this method.
*
* @return int
* The expiry time or FEEDS_EXPIRE_NEVER if expiry isn't supported.
*/
public function expiryTime() {
return FEEDS_EXPIRE_NEVER;
}
/**
* {@inheritdoc}
*/
public function configDefaults() {
$info = $this
->entityInfo();
$bundle = NULL;
if (empty($info['entity keys']['bundle'])) {
$bundle = $this
->entityType();
}
return array(
'mappings' => array(),
'insert_new' => FEEDS_INSERT_NEW,
'update_existing' => FEEDS_SKIP_EXISTING,
'update_non_existent' => FEEDS_SKIP_NON_EXISTENT,
'input_format' => NULL,
'skip_hash_check' => FALSE,
'bundle' => $bundle,
'language' => LANGUAGE_NONE,
) + parent::configDefaults();
}
/**
* Validates the configuration.
*
* @return array
* A list of errors.
*/
public function validateConfig() {
$errors = parent::validateConfig();
$info = $this
->entityInfo();
$config = $this
->getConfig();
// Check configured bundle if the bundle is configurable.
if (isset($config['bundle']) && !empty($info['entity keys']['bundle'])) {
$bundles = $this
->bundleOptions();
if (!in_array($config['bundle'], array_keys($bundles))) {
$errors[] = t('Invalid value %value for config option %key.', array(
'%value' => $config['bundle'],
'%key' => !empty($info['bundle name']) ? $info['bundle name'] : t('Bundle'),
));
}
}
// Check configured language.
if (module_exists('locale') && !empty($info['entity keys']['language']) && isset($config['language'])) {
$languages = $this
->languageOptions();
if (!isset($languages[$config['language']])) {
$errors[] = t('Invalid value %value for config option %key.', array(
'%value' => $config['language'],
'%key' => t('Language'),
));
}
}
return $errors;
}
/**
* {@inheritdoc}
*/
public function configForm(&$form_state) {
$info = $this
->entityInfo();
$form = array();
if (!empty($info['entity keys']['bundle'])) {
$bundle = $this
->bundle();
$form['bundle'] = array(
'#type' => 'select',
'#options' => $this
->bundleOptions(),
'#title' => !empty($info['bundle name']) ? $info['bundle name'] : t('Bundle'),
'#required' => TRUE,
'#default_value' => $bundle,
);
// Add default value as one of the options if not yet available.
if (!isset($form['bundle']['#options'][$bundle])) {
$form['bundle']['#options'][$bundle] = t('Unknown bundle: @bundle', array(
'@bundle' => $bundle,
));
}
}
else {
$form['bundle'] = array(
'#type' => 'value',
'#value' => $this
->entityType(),
);
}
if (module_exists('locale') && !empty($info['entity keys']['language'])) {
$form['language'] = array(
'#type' => 'select',
'#options' => $this
->languageOptions(),
'#title' => t('Language'),
'#required' => TRUE,
'#default_value' => $this->config['language'],
);
// Add default value as one of the options if not yet available.
if (!isset($form['language']['#options'][$this->config['language']])) {
$form['language']['#options'][$this->config['language']] = t('Unknown language: @language', array(
'@language' => $this->config['language'],
));
}
}
$tokens = array(
'@entities' => strtolower($info['label plural']),
);
$form['insert_new'] = array(
'#type' => 'radios',
'#title' => t('Insert new @entities', $tokens),
'#description' => t('New @entities will be determined using mappings that are a "unique target".', $tokens),
'#options' => array(
FEEDS_INSERT_NEW => t('Insert new @entities', $tokens),
FEEDS_SKIP_NEW => t('Do not insert new @entities', $tokens),
),
'#default_value' => $this->config['insert_new'],
);
$form['update_existing'] = array(
'#type' => 'radios',
'#title' => t('Update existing @entities', $tokens),
'#description' => t('Existing @entities will be determined using mappings that are a "unique target".', $tokens),
'#options' => array(
FEEDS_SKIP_EXISTING => t('Do not update existing @entities', $tokens),
FEEDS_REPLACE_EXISTING => t('Replace existing @entities', $tokens),
FEEDS_UPDATE_EXISTING => t('Update existing @entities', $tokens),
),
'#default_value' => $this->config['update_existing'],
'#after_build' => array(
'feeds_processor_config_form_update_existing_after_build',
),
'#tokens' => $tokens,
);
global $user;
$formats = filter_formats($user);
foreach ($formats as $format) {
$format_options[$format->format] = $format->name;
}
$form['skip_hash_check'] = array(
'#type' => 'checkbox',
'#title' => t('Skip hash check'),
'#description' => t('Force update of items even if item source data did not change.'),
'#default_value' => $this->config['skip_hash_check'],
);
$form['input_format'] = array(
'#type' => 'select',
'#title' => t('Text format'),
'#description' => t('Select the default input format for the text fields of the nodes to be created.'),
'#options' => $format_options,
'#default_value' => isset($this->config['input_format']) ? $this->config['input_format'] : 'plain_text',
'#required' => TRUE,
);
$form['update_non_existent'] = array(
'#type' => 'radios',
'#title' => t('Action to take when previously imported @entities are missing in the feed', $tokens),
'#description' => t('Select how @entities previously imported and now missing in the feed should be updated.', $tokens),
'#options' => array(
FEEDS_SKIP_NON_EXISTENT => t('Skip non-existent @entities', $tokens),
FEEDS_DELETE_NON_EXISTENT => t('Delete non-existent @entities', $tokens),
),
'#default_value' => $this->config['update_non_existent'],
);
return $form;
}
/**
* Get mappings.
*
* @return array
* A list of configured mappings.
*/
public function getMappings() {
$cache =& drupal_static('FeedsProcessor::getMappings', array());
if (!isset($cache[$this->id])) {
$mappings = $this->config['mappings'];
$targets = $this
->getCachedTargets();
$languages = $this
->languageOptions();
foreach ($mappings as &$mapping) {
if (isset($targets[$mapping['target']]['preprocess_callbacks'])) {
foreach ($targets[$mapping['target']]['preprocess_callbacks'] as $callback) {
call_user_func_array($callback, array(
$targets[$mapping['target']],
&$mapping,
));
}
}
// Ensure there's always a language set.
if (empty($mapping['language'])) {
$mapping['language'] = LANGUAGE_NONE;
}
else {
// Check if the configured language is available. If not, fallback to
// LANGUAGE_NONE.
if (!isset($languages[$mapping['language']])) {
$mapping['language'] = LANGUAGE_NONE;
}
}
}
$cache[$this->id] = $mappings;
}
return $cache[$this->id];
}
/**
* Declare possible mapping targets that this processor exposes.
*
* @ingroup mappingapi
*
* @return array
* An array of mapping targets. Keys are paths to targets
* separated by ->, values are TRUE if target can be unique,
* FALSE otherwise.
*/
public function getMappingTargets() {
// The bundle has not been selected.
if (!$this
->bundle()) {
$info = $this
->entityInfo();
$bundle_name = !empty($info['bundle name']) ? drupal_strtolower($info['bundle name']) : t('bundle');
$plugin_key = feeds_importer($this->id)->config['processor']['plugin_key'];
$url = url('admin/structure/feeds/' . $this->id . '/settings/' . $plugin_key);
drupal_set_message(t('Please <a href="@url">select a @bundle_name</a>.', array(
'@url' => $url,
'@bundle_name' => $bundle_name,
)), 'warning', FALSE);
}
return array(
'url' => array(
'name' => t('URL'),
'description' => t('The external URL of the item. E. g. the feed item URL in the case of a syndication feed. May be unique.'),
'optional_unique' => TRUE,
),
'guid' => array(
'name' => t('GUID'),
'description' => t('The globally unique identifier of the item. E. g. the feed item GUID in the case of a syndication feed. May be unique.'),
'optional_unique' => TRUE,
),
);
}
/**
* Allows other modules to expose targets.
*
* @param array &$targets
* The existing target array.
*/
protected function getHookTargets(array &$targets) {
self::loadMappers();
$entity_type = $this
->entityType();
$bundle = $this
->bundle();
$targets += module_invoke_all('feeds_processor_targets', $entity_type, $bundle);
drupal_alter('feeds_processor_targets', $targets, $entity_type, $bundle);
}
/**
* Set a concrete target element. Invoked from FeedsProcessor::map().
*
* @ingroup mappingapi
*/
public function setTargetElement(FeedsSource $source, $target_item, $target_element, $value) {
switch ($target_element) {
case 'url':
case 'guid':
$target_item->feeds_item->{$target_element} = $value;
break;
default:
$target_item->{$target_element} = $value;
break;
}
}
/**
* Retrieve the target entity's existing id if available. Otherwise return 0.
*
* @param FeedsSource $source
* The source information about this import.
* @param FeedsParserResult $result
* A FeedsParserResult object.
*
* @return int
* The serial id of an entity if found, 0 otherwise.
*
* @ingroup mappingapi
*/
protected function existingEntityId(FeedsSource $source, FeedsParserResult $result) {
$targets = $this
->getCachedTargets();
$entity_id = 0;
// Iterate through all unique targets and test whether they already exist in
// the database.
foreach ($this
->uniqueTargets($source, $result) as $target => $value) {
if ($target === 'guid' || $target === 'url') {
$entity_id = db_select('feeds_item')
->fields('feeds_item', array(
'entity_id',
))
->condition('feed_nid', $source->feed_nid)
->condition('entity_type', $this
->entityType())
->condition('id', $source->id)
->condition($target, $value)
->execute()
->fetchField();
}
if (!$entity_id && !empty($targets[$target]['unique_callbacks'])) {
if (!is_array($value)) {
$value = array(
$value,
);
}
foreach ($targets[$target]['unique_callbacks'] as $callback) {
if ($entity_id = call_user_func($callback, $source, $this
->entityType(), $this
->bundle(), $target, $value)) {
// Stop at the first unique ID returned by a callback.
break;
}
}
}
// Return with the content id found.
if ($entity_id) {
return $entity_id;
}
}
return $entity_id;
}
/**
* Returns all mapping targets that are marked as unique.
*
* @param FeedsSource $source
* The source information about this import.
* @param FeedsParserResult $result
* A FeedsParserResult object.
*
* @return array
* An array where the keys are target field names and the values are the
* elements from the source item mapped to these targets.
*/
protected function uniqueTargets(FeedsSource $source, FeedsParserResult $result) {
$parser = feeds_importer($this->id)->parser;
$targets = array();
foreach ($this
->getMappings() as $mapping) {
if (!empty($mapping['unique'])) {
// Invoke the parser's getSourceElement to retrieve the value for this
// mapping's source.
$targets[$mapping['target']] = $parser
->getSourceElement($source, $result, $mapping['source']);
}
}
return $targets;
}
/**
* Adds Feeds specific information on $entity->feeds_item.
*
* @param object $entity
* The entity object to be populated with new item info.
* @param int $feed_nid
* The feed nid of the source that produces this entity.
* @param string $hash
* The fingerprint of the source item.
*/
protected function newItemInfo($entity, $feed_nid, $hash = '') {
$entity->feeds_item = new stdClass();
$entity->feeds_item->is_new = TRUE;
$entity->feeds_item->entity_id = 0;
$entity->feeds_item->entity_type = $this
->entityType();
$entity->feeds_item->id = $this->id;
$entity->feeds_item->feed_nid = $feed_nid;
$entity->feeds_item->imported = REQUEST_TIME;
$entity->feeds_item->hash = $hash;
$entity->feeds_item->url = '';
$entity->feeds_item->guid = '';
}
/**
* Loads existing entity information and places it on $entity->feeds_item.
*
* @param object $entity
* The entity object to load item info for. Id key must be present.
*
* @return bool
* TRUE if item info could be loaded, false if not.
*/
protected function loadItemInfo($entity) {
$entity_info = entity_get_info($this
->entityType());
$key = $entity_info['entity keys']['id'];
if ($item_info = feeds_item_info_load($this
->entityType(), $entity->{$key})) {
$entity->feeds_item = $item_info;
return TRUE;
}
return FALSE;
}
/**
* Create MD5 hash of item and mappings array.
*
* Include mappings as a change in mappings may have an affect on the item
* produced.
*
* @return string
* A hash is always returned, even when the item is empty, NULL or FALSE.
*/
protected function hash($item) {
$sources = feeds_importer($this->id)->parser
->getMappingSourceList();
$mapped_item = array_intersect_key($item, array_flip($sources));
return hash('md5', serialize($mapped_item) . serialize($this
->getMappings()));
}
/**
* Retrieves the MD5 hash of $entity_id from the database.
*
* @return string
* Empty string if no item is found, hash otherwise.
*/
protected function getHash($entity_id) {
if ($hash = db_query("SELECT hash FROM {feeds_item} WHERE entity_type = :type AND entity_id = :id", array(
':type' => $this
->entityType(),
':id' => $entity_id,
))
->fetchField()) {
// Return with the hash.
return $hash;
}
return '';
}
/**
* DEPRECATED: Creates a log message for exceptions during import.
*
* Don't use this method as it concatenates user variables into the log
* message, which will pollute the locales_source table when the log message
* is translated. Use ::createLogEntry instead.
*
* @param Exception $e
* The exception that was throwned during processing the item.
* @param object $entity
* The entity object.
* @param object $item
* The parser result for this entity.
*
* @return string
* The message to log.
*
* @deprecated
* Use ::createLogEntry instead.
*/
protected function createLogMessage(Exception $e, $entity, $item) {
$message = $e
->getMessage();
$message .= '<h3>Original item</h3>';
// $this->exportObjectVars() already runs check_plain() for us, so we can
// concatenate here as is.
$message .= '<pre>' . $this
->exportObjectVars($item) . '</pre>';
$message .= '<h3>Entity</h3>';
$message .= '<pre>' . $this
->exportObjectVars($entity) . '</pre>';
return $message;
}
/**
* Creates a log entry for when an exception occurred during import.
*
* @param Exception $e
* The exception that was throwned during processing the item.
* @param object $entity
* The entity object.
* @param array $item
* The parser result for this entity.
*
* @return array
* The message and arguments to log.
*/
protected function createLogEntry(Exception $e, $entity, $item) {
$message = '@exception';
$message .= '<h3>Original item</h3>';
$message .= '<pre>!item</pre>';
$message .= '<h3>Entity</h3>';
$message .= '<pre>!entity</pre>';
$arguments = array(
'@exception' => $e
->getMessage(),
// $this->exportObjectVars() already runs check_plain() for us, so we can
// use the "!" placeholder.
'!item' => $this
->exportObjectVars($item),
'!entity' => $this
->exportObjectVars($entity),
);
return array(
$message,
$arguments,
);
}
/**
* Returns a string representation of an object or array for log messages.
*
* @param object|array $object
* The object to convert.
*
* @return string
* The sanitized string representation of the object.
*/
protected function exportObjectVars($object) {
include_once DRUPAL_ROOT . '/includes/utility.inc';
$out = is_array($object) ? $object : get_object_vars($object);
$out = array_filter($out, 'is_scalar');
foreach ($out as $key => $value) {
if (is_string($value)) {
if (function_exists('mb_check_encoding') && !mb_check_encoding($value, 'UTF-8')) {
$value = utf8_encode($value);
}
$out[$key] = truncate_utf8($value, 100, FALSE, TRUE);
}
}
if (is_array($object)) {
return check_plain(drupal_var_export($out));
}
return check_plain(drupal_var_export((object) $out));
}
/**
* Overrides FeedsPlugin::dependencies().
*/
public function dependencies() {
$dependencies = parent::dependencies();
// Find out which module defined the entity type.
$info = $this
->entityInfo();
if (isset($info['module'])) {
$dependencies[$info['module']] = $info['module'];
}
return $dependencies;
}
}
Members
Name![]() |
Modifiers | Type | Description | Overrides |
---|---|---|---|---|
FeedsConfigurable:: |
protected | property | Holds the actual configuration information. | |
FeedsConfigurable:: |
protected | property | CTools export enabled status of this object. | |
FeedsConfigurable:: |
protected | property | CTools export type of this object. | |
FeedsConfigurable:: |
protected | property | An unique identifier for the configuration. | |
FeedsConfigurable:: |
public | function | Similar to setConfig but adds to existing configuration. | |
FeedsConfigurable:: |
public | function | Submission handler for configForm(). | 2 |
FeedsConfigurable:: |
public | function | Validation handler for configForm(). | 3 |
FeedsConfigurable:: |
public | function | Copy a configuration. | 1 |
FeedsConfigurable:: |
public | function | Determine whether this object is persistent. | 1 |
FeedsConfigurable:: |
public | function | Determines whether this object is persistent and enabled. | 1 |
FeedsConfigurable:: |
public | function | Implements getConfig(). | 1 |
FeedsConfigurable:: |
public | function | Returns whether or not the configurable has a config form. | |
FeedsConfigurable:: |
public | function | Determine whether this object is enabled. | |
FeedsConfigurable:: |
public | function | Set configuration. | |
FeedsConfigurable:: |
public | function | Overrides magic method __get(). | |
FeedsConfigurable:: |
public | function | Override magic method __isset(). This is needed due to overriding __get(). | |
FeedsPlugin:: |
protected | property | The plugin definition. | |
FeedsPlugin:: |
public static | function | Get all available plugins. | |
FeedsPlugin:: |
public static | function | Gets all available plugins of a particular type. | |
FeedsPlugin:: |
public static | function | Determines whether given plugin is derived from given base plugin. | |
FeedsPlugin:: |
public | function |
Returns TRUE if $this->sourceForm() returns a form. Overrides FeedsSourceInterface:: |
|
FeedsPlugin:: |
public static | function |
Instantiates a FeedsPlugin object. Overrides FeedsConfigurable:: |
|
FeedsPlugin:: |
public static | function | Loads on-behalf implementations from mappers/ directory. | |
FeedsPlugin:: |
public | function | Returns the plugin definition. | |
FeedsPlugin:: |
public | function |
Save changes to the configuration of this object.
Delegate saving to parent (= Feed) which will collect
information from this object by way of getConfig() and store it. Overrides FeedsConfigurable:: |
1 |
FeedsPlugin:: |
protected | function | Sets the plugin definition. | |
FeedsPlugin:: |
public | function |
Implements FeedsSourceInterface::sourceDefaults(). Overrides FeedsSourceInterface:: |
1 |
FeedsPlugin:: |
public | function |
A source is being deleted. Overrides FeedsSourceInterface:: |
2 |
FeedsPlugin:: |
public | function |
Callback methods, exposes source form. Overrides FeedsSourceInterface:: |
3 |
FeedsPlugin:: |
public | function |
Validation handler for sourceForm. Overrides FeedsSourceInterface:: |
2 |
FeedsPlugin:: |
public | function |
A source is being saved. Overrides FeedsSourceInterface:: |
2 |
FeedsPlugin:: |
public static | function | Determines the type of a plugin. | |
FeedsPlugin:: |
protected | function |
Constructs a FeedsPlugin object. Overrides FeedsConfigurable:: |
|
FeedsProcessor:: |
public | function | Bundle type this processor operates on. | |
FeedsProcessor:: |
public | function | Provides a list of bundle options for use in select lists. | |
FeedsProcessor:: |
protected | function | Deletes entities which were not found during processing. | 2 |
FeedsProcessor:: |
public | function | Removes all imported items for a source. | |
FeedsProcessor:: |
public | function |
Overrides FeedsConfigurable::configDefaults(). Overrides FeedsPlugin:: |
3 |
FeedsProcessor:: |
public | function |
Returns configuration form for this object. Overrides FeedsConfigurable:: |
2 |
FeedsProcessor:: |
protected | function | Creates a log entry for when an exception occurred during import. | |
FeedsProcessor:: |
protected | function | DEPRECATED: Creates a log message for exceptions during import. | |
FeedsProcessor:: |
public | function |
Overrides FeedsPlugin::dependencies(). Overrides FeedsPlugin:: |
1 |
FeedsProcessor:: |
abstract protected | function | Deletes a series of entities. | 3 |
FeedsProcessor:: |
protected | function | Wrapper around entity_get_info(). | 3 |
FeedsProcessor:: |
protected | function | Returns the current language for entities. | |
FeedsProcessor:: |
protected | function | Loads an existing entity. | 3 |
FeedsProcessor:: |
abstract protected | function | Saves an entity. | 3 |
FeedsProcessor:: |
protected | function | Access check for saving an entity. | 1 |
FeedsProcessor:: |
abstract public | function | Entity type this processor operates on. | 3 |
FeedsProcessor:: |
protected | function | Validates an entity. | 3 |
FeedsProcessor:: |
protected | function | Retrieve the target entity's existing id if available. Otherwise return 0. | 3 |
FeedsProcessor:: |
public | function | Deletes feed items older than REQUEST_TIME - $time. | |
FeedsProcessor:: |
protected | function | Returns a database query used to select entities to expire. | 1 |
FeedsProcessor:: |
public | function | Returns the time in seconds after which items should be removed. | 1 |
FeedsProcessor:: |
protected | function | Returns a string representation of an object or array for log messages. | |
FeedsProcessor:: |
protected | function | Returns a statically cached version of the source mappings. | |
FeedsProcessor:: |
protected | function | Returns a statically cached version of the target mappings. | |
FeedsProcessor:: |
protected | function | Retrieves the MD5 hash of $entity_id from the database. | |
FeedsProcessor:: |
protected | function | Allows other modules to expose targets. | |
FeedsProcessor:: |
public | function | Report number of items that can be processed per call. | |
FeedsProcessor:: |
public | function | Get mappings. | |
FeedsProcessor:: |
public | function | Declare possible mapping targets that this processor exposes. | 3 |
FeedsProcessor:: |
protected | function | Returns the values from the parser, or callback. | |
FeedsProcessor:: |
protected | function | Create MD5 hash of item and mappings array. | |
FeedsProcessor:: |
protected | function | Initializes the list of entities to remove. | 1 |
FeedsProcessor:: |
public | function | Counts the number of items imported by this processor. | |
FeedsProcessor:: |
public | function | Provides a list of languages available on the site. | 1 |
FeedsProcessor:: |
protected | function | Loads existing entity information and places it on $entity->feeds_item. | |
FeedsProcessor:: |
protected | function | Execute mapping on an item. | 1 |
FeedsProcessor:: |
protected | function | Maps values onto the target item. | |
FeedsProcessor:: |
protected | function | Create a new entity. | 3 |
FeedsProcessor:: |
protected | function | Adds Feeds specific information on $entity->feeds_item. | |
FeedsProcessor:: |
public | function |
Implements FeedsPlugin::pluginType(). Overrides FeedsPlugin:: |
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FeedsProcessor:: |
public | function | Process the result of the parsing stage. | |
FeedsProcessor:: |
public | function | Set a concrete target element. Invoked from FeedsProcessor::map(). | 3 |
FeedsProcessor:: |
protected | function | Returns all mapping targets that are marked as unique. | |
FeedsProcessor:: |
protected | function | Helper function to unravel error messages hidden in a FieldValidationException. | |
FeedsProcessor:: |
public | function |
Validates the configuration. Overrides FeedsConfigurable:: |
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FeedsProcessor:: |
protected | function | Validates fields of an entity. |