1 files changed, 130 insertions, 0 deletions
diff --git a/includes/database/pgsql/database.inc b/includes/database/pgsql/database.inc
new file mode 100644
index 000000000..f6ce65051
--- /dev/null
+++ b/includes/database/pgsql/database.inc
@@ -0,0 +1,130 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Database interface code for PostgreSQL database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+class DatabaseConnection_pgsql extends DatabaseConnection {
+
+  protected $transactionSupport;
+  //protected $lastInsertInfo = NULL;
+
+  public function __construct(Array $connection_options = array()) {
+
+    $connection_options += array(
+      'transactions' => TRUE,
+    );
+    $this->transactionSupport = $connection_options['transactions'];
+
+    $dsn = 'pgsql:host=' . $connection_options['host'] . ' dbname=' . $connection_options['database'];
+    if (!empty($connection_options['port'])) {
+      $dsn .= ' port=' . $connection_options['port'];
+    }
+
+    parent::__construct($dsn, $connection_options['username'], $connection_options['password'], array(PDO::ATTR_STRINGIFY_FETCHES => TRUE));
+  }
+
+  public function query($query, Array $args = array(), $options = array()) {
+
+    $options += $this->defaultOptions();
+    
+    try {
+      if ($query instanceof DatabaseStatement) {
+        $stmt = $query;
+        $stmt->execute(NULL, $options);
+      }
+      else {
+        $stmt = $this->prepareQuery($query);
+        $stmt->execute($args, $options);
+      }
+      
+      switch ($options['return']) {
+        case Database::RETURN_STATEMENT:
+          return $stmt;
+        case Database::RETURN_AFFECTED:
+          return $stmt->rowCount();
+        case Database::RETURN_INSERT_ID:
+          return $this->lastInsertId($options['sequence_name']);
+        case Database::RETURN_NULL:
+          return;
+        default:
+          throw new PDOException('Invalid return directive: ' . $options['return']);
+      }
+    }
+    catch (PDOException $e) {
+      if (!function_exists('module_implements')) {
+        _db_need_install();
+      }
+      //watchdog('database', var_export($e, TRUE) . $e->getMessage(), NULL, WATCHDOG_ERROR);
+      if ($options['throw_exception']) {
+        if ($query instanceof DatabaseStatement) {
+          $query_string = $stmt->queryString;
+        }
+        else {
+          $query_string = $query;
+        }
+        throw new PDOException($query_string . " - \n" . print_r($args,1) . $e->getMessage());
+      }
+      return NULL;
+    }
+  }
+  
+  public function queryRange($query, Array $args, $from, $count, Array $options) {
+    // Backward compatibility hack, temporary.
+    $query = str_replace(array('%d' , '%f' , '%b' , "'%s'"), '?', $query);
+
+    return $this->query($query . ' LIMIT ' . $count . ' OFFSET ' . $from, $args, $options);
+  }
+
+  public function queryTemporary($query, Array $args, $tablename) {
+    $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE ' . $tablename . ' Engine=HEAP SELECT', $this->prefixTables($query));
+
+    return $this->query($query, $args, $options);
+  }
+
+  public function driver() {
+    return 'pgsql';
+  }
+
+  public function databaseType() {
+    return 'pgsql';
+  }
+
+  public function supportsTransactions() {
+    return $this->transactionSupport;
+  }
+
+  public function escapeTable($table) {
+    return preg_replace('/[^A-Za-z0-9_]+/', '', $table);
+  }
+
+  public function mapConditionOperator($operator) {
+    static $specials = array(
+      // In PostgreSQL, 'LIKE' is case-sensitive.  For case-insensitive LIKE
+      // statements, we need to use ILIKE instead.
+      'LIKE' => array('operator' => 'ILIKE'),
+    );
+
+    return isset($specials[$operator]) ? $specials[$operator] : NULL;
+  }
+
+  /**
+   * @todo Remove this as soon as db_rewrite_sql() has been exterminated.
+   */
+  public function distinctField($table, $field, $query) {
+    $field_to_select = 'DISTINCT(' . $table . '.' . $field . ')';
+    // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+    return preg_replace('/(SELECT.*)(?:' . $table . '\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(' . $table . '\.)' . $field . '(.*FROM )/AUsi', '\1 ' . $field_to_select . '\2', $query);
+  }
+}
+
+/**
+ * @} End of "ingroup database".
+ */