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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Database\Driver\pgsql\Insert. | |
| */ | |
| namespace Drupal\Core\Database\Driver\pgsql; | |
| use Drupal\Core\Database\Database; | |
| use Drupal\Core\Database\Query\Insert as QueryInsert; | |
| /** | |
| * @ingroup database | |
| * @{ | |
| */ | |
| /** | |
| * PostgreSQL implementation of \Drupal\Core\Database\Query\Insert. | |
| */ | |
| class Insert extends QueryInsert { | |
| public function execute() { | |
| if (!$this->preExecute()) { | |
| return NULL; | |
| } | |
| $stmt = $this->connection->prepareQuery((string) $this); | |
| // Fetch the list of blobs and sequences used on that table. | |
| $table_information = $this->connection->schema()->queryTableInformation($this->table); | |
| $max_placeholder = 0; | |
| $blobs = array(); | |
| $blob_count = 0; | |
| foreach ($this->insertValues as $insert_values) { | |
| foreach ($this->insertFields as $idx => $field) { | |
| if (isset($table_information->blob_fields[$field])) { | |
| $blobs[$blob_count] = fopen('php://memory', 'a'); | |
| fwrite($blobs[$blob_count], $insert_values[$idx]); | |
| rewind($blobs[$blob_count]); | |
| $stmt->bindParam(':db_insert_placeholder_' . $max_placeholder++, $blobs[$blob_count], \PDO::PARAM_LOB); | |
| // Pre-increment is faster in PHP than increment. | |
| ++$blob_count; | |
| } | |
| else { | |
| $stmt->bindParam(':db_insert_placeholder_' . $max_placeholder++, $insert_values[$idx]); | |
| } | |
| } | |
| // Check if values for a serial field has been passed. | |
| if (!empty($table_information->serial_fields)) { | |
| foreach ($table_information->serial_fields as $index => $serial_field) { | |
| $serial_key = array_search($serial_field, $this->insertFields); | |
| if ($serial_key !== FALSE) { | |
| $serial_value = $insert_values[$serial_key]; | |
| // Force $last_insert_id to the specified value. This is only done | |
| // if $index is 0. | |
| if ($index == 0) { | |
| $last_insert_id = $serial_value; | |
| } | |
| // Sequences must be greater than or equal to 1. | |
| if ($serial_value === NULL || !$serial_value) { | |
| $serial_value = 1; | |
| } | |
| // Set the sequence to the bigger value of either the passed | |
| // value or the max value of the column. It can happen that another | |
| // thread calls nextval() which could lead to a serial number being | |
| // used twice. However, trying to insert a value into a serial | |
| // column should only be done in very rare cases and is not thread | |
| // safe by definition. | |
| $this->connection->query("SELECT setval('" . $table_information->sequences[$index] . "', GREATEST(MAX(" . $serial_field . "), :serial_value)) FROM {" . $this->table . "}", array(':serial_value' => (int)$serial_value)); | |
| } | |
| } | |
| } | |
| } | |
| if (!empty($this->fromQuery)) { | |
| // bindParam stores only a reference to the variable that is followed when | |
| // the statement is executed. We pass $arguments[$key] instead of $value | |
| // because the second argument to bindParam is passed by reference and | |
| // the foreach statement assigns the element to the existing reference. | |
| $arguments = $this->fromQuery->getArguments(); | |
| foreach ($arguments as $key => $value) { | |
| $stmt->bindParam($key, $arguments[$key]); | |
| } | |
| } | |
| // PostgreSQL requires the table name to be specified explicitly | |
| // when requesting the last insert ID, so we pass that in via | |
| // the options array. | |
| $options = $this->queryOptions; | |
| if (!empty($table_information->sequences)) { | |
| $options['sequence_name'] = $table_information->sequences[0]; | |
| } | |
| // If there are no sequences then we can't get a last insert id. | |
| elseif ($options['return'] == Database::RETURN_INSERT_ID) { | |
| $options['return'] = Database::RETURN_NULL; | |
| } | |
| // Create a savepoint so we can rollback a failed query. This is so we can | |
| // mimic MySQL and SQLite transactions which don't fail if a single query | |
| // fails. This is important for tables that are created on demand. For | |
| // example, \Drupal\Core\Cache\DatabaseBackend. | |
| $this->connection->addSavepoint(); | |
| try { | |
| // Only use the returned last_insert_id if it is not already set. | |
| if (!empty($last_insert_id)) { | |
| $this->connection->query($stmt, array(), $options); | |
| } | |
| else { | |
| $last_insert_id = $this->connection->query($stmt, array(), $options); | |
| } | |
| $this->connection->releaseSavepoint(); | |
| } | |
| catch (\Exception $e) { | |
| $this->connection->rollbackSavepoint(); | |
| throw $e; | |
| } | |
| // Re-initialize the values array so that we can re-use this query. | |
| $this->insertValues = array(); | |
| return $last_insert_id; | |
| } | |
| public function __toString() { | |
| // Create a sanitized comment string to prepend to the query. | |
| $comments = $this->connection->makeComment($this->comments); | |
| // Default fields are always placed first for consistency. | |
| $insert_fields = array_merge($this->defaultFields, $this->insertFields); | |
| $insert_fields = array_map(function($f) { return $this->connection->escapeField($f); }, $insert_fields); | |
| // If we're selecting from a SelectQuery, finish building the query and | |
| // pass it back, as any remaining options are irrelevant. | |
| if (!empty($this->fromQuery)) { | |
| $insert_fields_string = $insert_fields ? ' (' . implode(', ', $insert_fields) . ') ' : ' '; | |
| return $comments . 'INSERT INTO {' . $this->table . '}' . $insert_fields_string . $this->fromQuery; | |
| } | |
| $query = $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES '; | |
| $values = $this->getInsertPlaceholderFragment($this->insertValues, $this->defaultFields); | |
| $query .= implode(', ', $values); | |
| return $query; | |
| } | |
| } |