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class.entrymanager.php
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class.entrymanager.php
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<?php
/**
* @package toolkit
*/
/**
* The `EntryManager` is responsible for all `Entry` objects in Symphony.
* Entries are stored in the database in a cluster of tables. There is a
* parent entry row stored in `tbl_entries` and then each field's data is
* stored in a separate table, `tbl_entries_data_{field_id}`. Where Field ID
* is generated when the Section is saved. This Manager provides basic
* add, edit, delete and fetching methods for Entries.
*/
class EntryManager
{
/**
* The Field ID that will be used to sort when fetching Entries, defaults
* to null, which implies the Entry ID (id column in `tbl_entries`).
* To order by core fields, use one of
* 'system:creation-date', 'system:modification-date', 'system:id'.
* @var integer|string
*/
protected static $_fetchSortField = null;
/**
* The direction that entries should be sorted in, available options are
* RAND, ASC or DESC. Defaults to null, which implies ASC
* @var string
*/
protected static $_fetchSortDirection = null;
/**
* Setter function for the default sorting direction of the Fetch
* function. Available options are RAND, ASC or DESC.
*
* @param string $direction
* The direction that entries should be sorted in, available options
* are RAND, ASC or DESC.
*/
public static function setFetchSortingDirection($direction)
{
$direction = strtoupper($direction);
if ($direction == 'RANDOM') {
$direction = 'RAND';
}
self::$_fetchSortDirection = (in_array($direction, array('RAND', 'ASC', 'DESC')) ? $direction : null);
}
/**
* Sets the field to applying the sorting direction on when fetching
* entries
*
* @param integer $field_id
* The ID of the Field that should be sorted on
*/
public static function setFetchSortingField($field_id)
{
self::$_fetchSortField = $field_id;
}
/**
* Convenience function that will set sorting field and direction
* by calling `setFetchSortingField()` & `setFetchSortingDirection()`
*
* @see toolkit.EntryManager#setFetchSortingField()
* @see toolkit.EntryManager#setFetchSortingDirection()
* @param integer $field_id
* The ID of the Field that should be sorted on
* @param string $direction
* The direction that entries should be sorted in, available options
* are RAND, ASC or DESC. Defaults to ASC
*/
public static function setFetchSorting($field_id, $direction = 'ASC')
{
self::setFetchSortingField($field_id);
self::setFetchSortingDirection($direction);
}
/**
* Returns an object representation of the sorting for the
* EntryManager, with the field and direction provided
*
* @return StdClass
*/
public static function getFetchSorting()
{
return (object)array(
'field' => self::$_fetchSortField,
'direction' => self::$_fetchSortDirection
);
}
/**
* Executes the SQL queries need to save a field's data for the specified
* entry id.
*
* It first locks the table for writes, it then deletes existing data and then
* it inserts a new row for the data. Errors are discarded and the lock is
* released, if it was acquired.
*
* @param int $entry_id
* The entry id to save the data for
* @param int $field_id
* The field id to save the data for
* @param array $field
* The field data to save
*/
protected static function saveFieldData($entry_id, $field_id, $field)
{
// Check that we have a field id
if (empty($field_id)) {
return;
}
// Ignore parameter when not an array
if (!is_array($field)) {
$field = array();
}
$did_lock = false;
$exception = null;
try {
// Check if table exists
$table_name = 'tbl_entries_data_' . General::intval($field_id);
if (!Symphony::Database()->tableExists($table_name)) {
return;
}
// Lock the table for write
$did_lock = Symphony::Database()->query("LOCK TABLES `$table_name` WRITE");
// Delete old data
Symphony::Database()->delete($table_name, sprintf("
`entry_id` = %d", $entry_id
));
// Insert new data
$data = array(
'entry_id' => $entry_id
);
$fields = array();
foreach ($field as $key => $value) {
if (is_array($value)) {
foreach ($value as $ii => $v) {
$fields[$ii][$key] = $v;
}
} else {
$fields[max(0, count($fields) - 1)][$key] = $value;
}
}
foreach ($fields as $index => $field_data) {
$fields[$index] = array_merge($data, $field_data);
}
// Insert only if we have field data
if (!empty($fields)) {
Symphony::Database()->insert($fields, $table_name);
}
} catch (Exception $ex) {
$exception = $ex;
Symphony::Log()->pushExceptionToLog($ex, true);
}
if ($did_lock) {
Symphony::Database()->query('UNLOCK TABLES');
}
if ($exception) {
throw $exception;
}
}
/**
* Given an Entry object, iterate over all of the fields in that object
* an insert them into their relevant entry tables.
*
* @see EntryManager::saveFieldData()
* @param Entry $entry
* An Entry object to insert into the database
* @throws DatabaseException
* @return boolean
*/
public static function add(Entry $entry)
{
$fields = $entry->get();
Symphony::Database()->insert($fields, 'tbl_entries');
if (!$entry_id = Symphony::Database()->getInsertID()) {
return false;
}
// Iterate over all data for this entry
foreach ($entry->getData() as $field_id => $field) {
// Write data
static::saveFieldData($entry_id, $field_id, $field);
}
$entry->set('id', $entry_id);
return true;
}
/**
* Update an existing Entry object given an Entry object
*
* @see EntryManager::saveFieldData()
* @param Entry $entry
* An Entry object
* @throws DatabaseException
* @return boolean
*/
public static function edit(Entry $entry)
{
// Update modification date and modification author.
Symphony::Database()->update(
array(
'modification_author_id' => $entry->get('modification_author_id'),
'modification_date' => $entry->get('modification_date'),
'modification_date_gmt' => $entry->get('modification_date_gmt')
),
'tbl_entries',
sprintf(' `id` = %d', (int)$entry->get('id'))
);
// Iterate over all data for this entry
foreach ($entry->getData() as $field_id => $field) {
// Write data
static::saveFieldData($entry->get('id'), $field_id, $field);
}
return true;
}
/**
* Given an Entry ID, or an array of Entry ID's, delete all
* data associated with this Entry using a Field's `entryDataCleanup()`
* function, and then remove this Entry from `tbl_entries`. If the `$entries`
* all belong to the same section, passing `$section_id` will improve
* performance
*
* @param array|integer $entries
* An entry_id, or an array of entry id's to delete
* @param integer $section_id (optional)
* If possible, the `$section_id` of the the `$entries`. This parameter
* should be left as null if the `$entries` array contains entry_id's for
* multiple sections.
* @throws DatabaseException
* @throws Exception
* @return boolean
*/
public static function delete($entries, $section_id = null)
{
$needs_data = true;
if (!is_array($entries)) {
$entries = array($entries);
}
// Get the section's schema
if (!is_null($section_id)) {
$section = SectionManager::fetch($section_id);
if ($section instanceof Section) {
$fields = $section->fetchFields();
$data = array();
foreach ($fields as $field) {
$reflection = new ReflectionClass($field);
// This field overrides the default implementation, so pass it data.
$data[$field->get('element_name')] = $reflection->getMethod('entryDataCleanup')->class == 'Field' ? false : true;
}
$data = array_filter($data);
if (empty($data)) {
$needs_data = false;
}
}
}
// We'll split $entries into blocks of 2500 (random number)
// and process the deletion in chunks.
$chunks = array_chunk($entries, 2500);
foreach ($chunks as $chunk) {
$entry_list = implode("', '", $chunk);
// If we weren't given a `section_id` we'll have to process individually
// If we don't need data for any field, we can process the whole chunk
// without building Entry objects, otherwise we'll need to build
// Entry objects with data
if (is_null($section_id) || !$needs_data) {
$entries = $chunk;
} elseif ($needs_data) {
$entries = self::fetch($chunk, $section_id);
}
if ($needs_data) {
foreach ($entries as $id) {
// Handles the case where `section_id` was not provided
if (is_null($section_id)) {
$e = self::fetch($id);
if (!is_array($e)) {
continue;
}
$e = current($e);
if (!$e instanceof Entry) {
continue;
}
// If we needed data, whole Entry objects will exist
} elseif ($needs_data) {
$e = $id;
$id = $e->get('id');
}
// Time to loop over it and send it to the fields.
// Note we can't rely on the `$fields` array as we may
// also be dealing with the case where `section_id` hasn't
// been provided
$entry_data = $e->getData();
foreach ($entry_data as $field_id => $data) {
$field = FieldManager::fetch($field_id);
$field->entryDataCleanup($id, $data);
}
}
} else {
foreach ($fields as $field) {
$field->entryDataCleanup($chunk);
}
}
Symphony::Database()->delete('tbl_entries', " `id` IN ('$entry_list') ");
}
return true;
}
/**
* This function will return an array of Entry objects given an ID or an array of ID's.
* Do not provide `$entry_id` as an array if not specifying the `$section_id`. This function
* is commonly passed custom SQL statements through the `$where` and `$join` parameters
* that is generated by the fields of this section.
*
* @since Symphony 2.7.0 it will also call a new method on fields,
* `buildSortingSelectSQL()`, to make sure fields can add ordering columns in
* the SELECT clause. This is required on MySQL 5.7+ strict mode.
*
* @param integer|array $entry_id
* An array of Entry ID's or an Entry ID to return
* @param integer $section_id
* The ID of the Section that these entries are contained in
* @param integer $limit
* The limit of entries to return
* @param integer $start
* The starting offset of the entries to return
* @param string $where
* Any custom WHERE clauses. The tbl_entries alias is `e`
* @param string $joins
* Any custom JOIN's
* @param boolean $group
* Whether the entries need to be grouped by Entry ID or not
* @param boolean $buildentries
* Whether to return an array of entry ID's or Entry objects. Defaults to
* true, which will return Entry objects
* @param array $element_names
* Choose whether to get data from a subset of fields or all fields in a section,
* by providing an array of field names. Defaults to null, which will load data
* from all fields in a section.
* @param boolean $enable_sort
* Defaults to true, if false this function will not apply any sorting
* @throws Exception
* @return array
* If `$buildentries` is true, this function will return an array of Entry objects,
* otherwise it will return an associative array of Entry data from `tbl_entries`
*/
public static function fetch($entry_id = null, $section_id = null, $limit = null, $start = null, $where = null, $joins = null, $group = false, $buildentries = true, $element_names = null, $enable_sort = true)
{
$sort = null;
$sortSelectClause = null;
if (!$entry_id && !$section_id) {
return array();
}
if (!$section_id) {
$section_id = self::fetchEntrySectionID($entry_id);
}
$section = SectionManager::fetch($section_id);
if (!is_object($section)) {
return array();
}
// SORTING
// A single $entry_id doesn't need to be sorted on, or if it's explicitly disabled
if ((!is_array($entry_id) && General::intval($entry_id) > 0) || !$enable_sort) {
$sort = null;
// Check for RAND first, since this works independently of any specific field
} elseif (self::$_fetchSortDirection == 'RAND') {
$sort = 'ORDER BY RAND() ';
// Handle Creation Date or the old Date sorting
} elseif (self::$_fetchSortField === 'system:creation-date' || self::$_fetchSortField === 'date') {
$sort = sprintf('ORDER BY `e`.`creation_date` %s', self::$_fetchSortDirection);
// Handle Modification Date sorting
} elseif (self::$_fetchSortField === 'system:modification-date') {
$sort = sprintf('ORDER BY `e`.`modification_date` %s', self::$_fetchSortDirection);
// Handle sorting for System ID
} elseif (self::$_fetchSortField == 'system:id' || self::$_fetchSortField == 'id') {
$sort = sprintf('ORDER BY `e`.`id` %s', self::$_fetchSortDirection);
// Handle when the sort field is an actual Field
} elseif (self::$_fetchSortField && $field = FieldManager::fetch(self::$_fetchSortField)) {
if ($field->isSortable()) {
$field->buildSortingSQL($joins, $where, $sort, self::$_fetchSortDirection);
$sortSelectClause = $field->buildSortingSelectSQL($sort, self::$_fetchSortDirection);
}
// Handle if the section has a default sorting field
} elseif ($section->getSortingField() && $field = FieldManager::fetch($section->getSortingField())) {
if ($field->isSortable()) {
$field->buildSortingSQL($joins, $where, $sort, $section->getSortingOrder());
$sortSelectClause = $field->buildSortingSelectSQL($sort, $section->getSortingOrder());
}
// No sort specified, so just sort on system id
} else {
$sort = sprintf('ORDER BY `e`.`id` %s', self::$_fetchSortDirection);
}
if ($field && !$group) {
$group = $field->requiresSQLGrouping();
}
if ($entry_id && !is_array($entry_id)) {
// The entry ID may be a comma-separated string, so explode it to make it
// a proper array
$entry_id = explode(',', $entry_id);
}
// An existing entry ID will be an array now, and we can force integer values
if ($entry_id) {
$entry_id = array_map(array('General', 'intval'), $entry_id);
}
$sql = sprintf("
SELECT %s`e`.`id`, `e`.section_id,
`e`.`author_id`, `e`.`modification_author_id`,
`e`.`creation_date` AS `creation_date`,
`e`.`modification_date` AS `modification_date`
%s
FROM `tbl_entries` AS `e`
%s
WHERE 1
%s
%s
%s
%s
%s
",
$group ? 'DISTINCT ' : '',
$sortSelectClause ? ', ' . $sortSelectClause : '',
$joins,
$entry_id ? "AND `e`.`id` IN ('".implode("', '", $entry_id)."') " : '',
$section_id ? sprintf("AND `e`.`section_id` = %d", $section_id) : '',
$where,
$sort,
$limit ? sprintf('LIMIT %d, %d', $start, $limit) : ''
);
$rows = Symphony::Database()->fetch($sql);
// Create UNIX timestamps, as it has always been (Re: #2501)
foreach ($rows as &$entry) {
$entry['creation_date'] = DateTimeObj::get('U', $entry['creation_date']);
$entry['modification_date'] = DateTimeObj::get('U', $entry['modification_date']);
}
unset($entry);
return ($buildentries && (is_array($rows) && !empty($rows)) ? self::__buildEntries($rows, $section_id, $element_names) : $rows);
}
/**
* Given an array of Entry data from `tbl_entries` and a section ID, return an
* array of Entry objects. For performance reasons, it's possible to pass an array
* of field handles via `$element_names`, so that only a subset of the section schema
* will be queried. This function currently only supports Entry from one section at a
* time.
*
* @param array $rows
* An array of Entry data from `tbl_entries` including the Entry ID, Entry section,
* the ID of the Author who created the Entry, and a Unix timestamp of creation
* @param integer $section_id
* The section ID of the entries in the `$rows`
* @param array $element_names
* Choose whether to get data from a subset of fields or all fields in a section,
* by providing an array of field names. Defaults to null, which will load data
* from all fields in a section.
* @throws DatabaseException
* @return array
* An array of Entry objects
*/
public static function __buildEntries(array $rows, $section_id, $element_names = null)
{
$entries = array();
if (empty($rows)) {
return $entries;
}
$schema = FieldManager::fetchFieldIDFromElementName($element_names, $section_id);
if (is_int($schema)) {
$schema = array($schema);
}
$raw = array();
$rows_string = '';
// Append meta data:
foreach ($rows as $entry) {
$raw[$entry['id']]['meta'] = $entry;
$rows_string .= $entry['id'] . ',';
}
$rows_string = trim($rows_string, ',');
// Append field data:
if (is_array($schema)) {
foreach ($schema as $field_id) {
try {
$row = Symphony::Database()->fetch("SELECT * FROM `tbl_entries_data_{$field_id}` WHERE `entry_id` IN ($rows_string) ORDER BY `id` ASC");
} catch (Exception $e) {
// No data due to error
continue;
}
if (!is_array($row) || empty($row)) {
continue;
}
foreach ($row as $r) {
$entry_id = $r['entry_id'];
unset($r['id']);
unset($r['entry_id']);
if (!isset($raw[$entry_id]['fields'][$field_id])) {
$raw[$entry_id]['fields'][$field_id] = $r;
} else {
foreach (array_keys($r) as $key) {
// If this field already has been set, we need to take the existing
// value and make it array, adding the current value to it as well
// There is a special check incase the the field's value has been
// purposely set to null in the database.
if (
(
isset($raw[$entry_id]['fields'][$field_id][$key])
|| is_null($raw[$entry_id]['fields'][$field_id][$key])
)
&& !is_array($raw[$entry_id]['fields'][$field_id][$key])
) {
$raw[$entry_id]['fields'][$field_id][$key] = array(
$raw[$entry_id]['fields'][$field_id][$key],
$r[$key]
);
// This key/value hasn't been set previously, so set it
} elseif (!isset($raw[$entry_id]['fields'][$field_id][$key])) {
$raw[$entry_id]['fields'][$field_id] = array($r[$key]);
// This key has been set and it's an array, so just append
// this value onto the array
} else {
$raw[$entry_id]['fields'][$field_id][$key][] = $r[$key];
}
}
}
}
}
}
// Loop over the array of entry data and convert it to an array of Entry objects
foreach ($raw as $entry) {
$obj = self::create();
$obj->set('id', $entry['meta']['id']);
$obj->set('author_id', $entry['meta']['author_id']);
$obj->set('modification_author_id', $entry['meta']['modification_author_id']);
$obj->set('section_id', $entry['meta']['section_id']);
$obj->set('creation_date', DateTimeObj::get('c', $entry['meta']['creation_date']));
if (isset($entry['meta']['modification_date'])) {
$obj->set('modification_date', DateTimeObj::get('c', $entry['meta']['modification_date']));
} else {
$obj->set('modification_date', $obj->get('creation_date'));
}
$obj->creationDate = $obj->get('creation_date');
if (isset($entry['fields']) && is_array($entry['fields'])) {
foreach ($entry['fields'] as $field_id => $data) {
$obj->setData($field_id, $data);
}
}
$entries[] = $obj;
}
return $entries;
}
/**
* Given an Entry ID, return the Section ID that it belongs to
*
* @param integer $entry_id
* The ID of the Entry to return it's section
* @return integer
* The Section ID for this Entry's section
*/
public static function fetchEntrySectionID($entry_id)
{
return Symphony::Database()->fetchVar('section_id', 0, sprintf("
SELECT `section_id` FROM `tbl_entries` WHERE `id` = %d LIMIT 1",
$entry_id
));
}
/**
* Return the count of the number of entries in a particular section.
*
* @param integer $section_id
* The ID of the Section where the Entries are to be counted
* @param string $where
* Any custom WHERE clauses
* @param string $joins
* Any custom JOIN's
* @param boolean $group
* Whether the entries need to be grouped by Entry ID or not
* @return integer
*/
public static function fetchCount($section_id = null, $where = null, $joins = null, $group = false)
{
if (is_null($section_id)) {
return false;
}
$section = SectionManager::fetch($section_id);
if (!is_object($section)) {
return false;
}
return Symphony::Database()->fetchVar('count', 0, sprintf("
SELECT COUNT(%s`e`.id) as `count`
FROM `tbl_entries` AS `e`
%s
WHERE `e`.`section_id` = %d
%s
",
$group ? 'DISTINCT ' : '',
$joins,
$section_id,
$where
));
}
/**
* Returns an array of Entry objects, with some basic pagination given
* the number of Entry's to return and the current starting offset. This
* function in turn calls the fetch function that does alot of the heavy
* lifting. For instance, if there are 60 entries in a section and the pagination
* dictates that per page, 15 entries are to be returned, by passing 2 to
* the $page parameter you could return entries 15-30
*
* @param integer $page
* The page to return, defaults to 1
* @param integer $section_id
* The ID of the Section that these entries are contained in
* @param integer $entriesPerPage
* The number of entries to return per page.
* @param string $where
* Any custom WHERE clauses
* @param string $joins
* Any custom JOIN's
* @param boolean $group
* Whether the entries need to be grouped by Entry ID or not
* @param boolean $records_only
* If this is set to true, an array of Entry objects will be returned
* without any basic pagination information. Defaults to false
* @param boolean $buildentries
* Whether to return an array of entry ID's or Entry objects. Defaults to
* true, which will return Entry objects
* @param array $element_names
* Choose whether to get data from a subset of fields or all fields in a section,
* by providing an array of field names. Defaults to null, which will load data
* from all fields in a section.
* @throws Exception
* @return array
* Either an array of Entry objects, or an associative array containing
* the total entries, the start position, the entries per page and the
* Entry objects
*/
public static function fetchByPage($page = 1, $section_id, $entriesPerPage, $where = null, $joins = null, $group = false, $records_only = false, $buildentries = true, array $element_names = null)
{
if ($entriesPerPage != null && !is_string($entriesPerPage) && !is_numeric($entriesPerPage)) {
throw new Exception(__('Entry limit specified was not a valid type. String or Integer expected.'));
} elseif ($entriesPerPage == null) {
$records = self::fetch(null, $section_id, null, null, $where, $joins, $group, $buildentries, $element_names);
$count = self::fetchCount($section_id, $where, $joins, $group);
$entries = array(
'total-entries' => $count,
'total-pages' => 1,
'remaining-pages' => 0,
'remaining-entries' => 0,
'start' => 1,
'limit' => $count,
'records' => $records
);
return $entries;
} else {
$start = (max(1, $page) - 1) * $entriesPerPage;
$records = ($entriesPerPage == '0' ? null : self::fetch(null, $section_id, $entriesPerPage, $start, $where, $joins, $group, $buildentries, $element_names));
if ($records_only) {
return array('records' => $records);
}
$entries = array(
'total-entries' => self::fetchCount($section_id, $where, $joins, $group),
'records' => $records,
'start' => max(1, $start),
'limit' => $entriesPerPage
);
$entries['remaining-entries'] = max(0, $entries['total-entries'] - ($start + $entriesPerPage));
$entries['total-pages'] = max(1, ceil($entries['total-entries'] * (1 / $entriesPerPage)));
$entries['remaining-pages'] = max(0, $entries['total-pages'] - $page);
return $entries;
}
}
/**
* Creates a new Entry object using this class as the parent.
*
* @return Entry
*/
public static function create()
{
return new Entry;
}
}