--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/includes/database/pgsql/query.inc Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,210 @@
+<?php
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * @file
+ * Query code for PostgreSQL embedded database engine.
+ */
+
+
+class InsertQuery_pgsql extends InsertQuery {
+
+ 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;
+ }
+ // 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) {
+ $options['return'] = Database::RETURN_NULL;
+ }
+ // Only use the returned last_insert_id if it is not already set.
+ if (!empty($last_insert_id)) {
+ $this->connection->query($stmt, array(), $options);
+ }
+ else {
+ $last_insert_id = $this->connection->query($stmt, array(), $options);
+ }
+
+ // 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, $this->insertFields);
+
+ // If we're selecting from a SelectQuery, finish building the query and
+ // pass it back, as any remaining options are irrelevant.
+ if (!empty($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 ';
+
+ $max_placeholder = 0;
+ $values = array();
+ if (count($this->insertValues)) {
+ foreach ($this->insertValues as $insert_values) {
+ $placeholders = array();
+
+ // Default fields aren't really placeholders, but this is the most convenient
+ // way to handle them.
+ $placeholders = array_pad($placeholders, count($this->defaultFields), 'default');
+
+ $new_placeholder = $max_placeholder + count($insert_values);
+ for ($i = $max_placeholder; $i < $new_placeholder; ++$i) {
+ $placeholders[] = ':db_insert_placeholder_' . $i;
+ }
+ $max_placeholder = $new_placeholder;
+ $values[] = '(' . implode(', ', $placeholders) . ')';
+ }
+ }
+ else {
+ // If there are no values, then this is a default-only query. We still need to handle that.
+ $placeholders = array_fill(0, count($this->defaultFields), 'default');
+ $values[] = '(' . implode(', ', $placeholders) . ')';
+ }
+
+ $query .= implode(', ', $values);
+
+ return $query;
+ }
+}
+
+class UpdateQuery_pgsql extends UpdateQuery {
+ public function execute() {
+ $max_placeholder = 0;
+ $blobs = array();
+ $blob_count = 0;
+
+ // Because we filter $fields the same way here and in __toString(), the
+ // placeholders will all match up properly.
+ $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);
+
+ // Expressions take priority over literal fields, so we process those first
+ // and remove any literal fields that conflict.
+ $fields = $this->fields;
+ $expression_fields = array();
+ foreach ($this->expressionFields as $field => $data) {
+ if (!empty($data['arguments'])) {
+ foreach ($data['arguments'] as $placeholder => $argument) {
+ // We assume that an expression will never happen on a BLOB field,
+ // which is a fairly safe assumption to make since in most cases
+ // it would be an invalid query anyway.
+ $stmt->bindParam($placeholder, $data['arguments'][$placeholder]);
+ }
+ }
+ unset($fields[$field]);
+ }
+
+ foreach ($fields as $field => $value) {
+ $placeholder = ':db_update_placeholder_' . ($max_placeholder++);
+
+ if (isset($table_information->blob_fields[$field])) {
+ $blobs[$blob_count] = fopen('php://memory', 'a');
+ fwrite($blobs[$blob_count], $value);
+ rewind($blobs[$blob_count]);
+ $stmt->bindParam($placeholder, $blobs[$blob_count], PDO::PARAM_LOB);
+ ++$blob_count;
+ }
+ else {
+ $stmt->bindParam($placeholder, $fields[$field]);
+ }
+ }
+
+ if (count($this->condition)) {
+ $this->condition->compile($this->connection, $this);
+
+ $arguments = $this->condition->arguments();
+ foreach ($arguments as $placeholder => $value) {
+ $stmt->bindParam($placeholder, $arguments[$placeholder]);
+ }
+ }
+
+ $options = $this->queryOptions;
+ $options['already_prepared'] = TRUE;
+ $this->connection->query($stmt, $options);
+
+ return $stmt->rowCount();
+ }
+}