--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/includes/database/sqlite/query.inc	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,139 @@
+<?php
+
+/**
+ * @file
+ * Query code for SQLite embedded database engine.
+ */
+
+/**
+ * @addtogroup database
+ * @{
+ */
+
+/**
+ * SQLite specific implementation of InsertQuery.
+ *
+ * We ignore all the default fields and use the clever SQLite syntax:
+ *   INSERT INTO table DEFAULT VALUES
+ * for degenerated "default only" queries.
+ */
+class InsertQuery_sqlite extends InsertQuery {
+
+  public function execute() {
+    if (!$this->preExecute()) {
+      return NULL;
+    }
+    if (count($this->insertFields)) {
+      return parent::execute();
+    }
+    else {
+      return $this->connection->query('INSERT INTO {' . $this->table . '} DEFAULT VALUES', array(), $this->queryOptions);
+    }
+  }
+
+  public function __toString() {
+    // Create a sanitized comment string to prepend to the query.
+    $comments = $this->connection->makeComment($this->comments);
+
+    // Produce as many generic placeholders as necessary.
+    $placeholders = array_fill(0, count($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 = $this->insertFields ? ' (' . implode(', ', $this->insertFields) . ') ' : ' ';
+      return $comments . 'INSERT INTO {' . $this->table . '}' . $insert_fields_string . $this->fromQuery;
+    }
+
+    return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $this->insertFields) . ') VALUES (' . implode(', ', $placeholders) . ')';
+  }
+
+}
+
+/**
+ * SQLite specific implementation of UpdateQuery.
+ *
+ * SQLite counts all the rows that match the conditions as modified, even if they
+ * will not be affected by the query. We workaround this by ensuring that
+ * we don't select those rows.
+ *
+ * A query like this one:
+ *   UPDATE test SET col1 = 'newcol1', col2 = 'newcol2' WHERE tid = 1
+ * will become:
+ *   UPDATE test SET col1 = 'newcol1', col2 = 'newcol2' WHERE tid = 1 AND (col1 <> 'newcol1' OR col2 <> 'newcol2')
+ */
+class UpdateQuery_sqlite extends UpdateQuery {
+  public function execute() {
+    if (!empty($this->queryOptions['sqlite_return_matched_rows'])) {
+      return parent::execute();
+    }
+
+    // Get the fields used in the update query.
+    $fields = $this->expressionFields + $this->fields;
+
+    // Add the inverse of the fields to the condition.
+    $condition = new DatabaseCondition('OR');
+    foreach ($fields as $field => $data) {
+      if (is_array($data)) {
+        // The field is an expression.
+        $condition->where($field . ' <> ' . $data['expression']);
+        $condition->isNull($field);
+      }
+      elseif (!isset($data)) {
+        // The field will be set to NULL.
+        $condition->isNotNull($field);
+      }
+      else {
+        $condition->condition($field, $data, '<>');
+        $condition->isNull($field);
+      }
+    }
+    if (count($condition)) {
+      $condition->compile($this->connection, $this);
+      $this->condition->where((string) $condition, $condition->arguments());
+    }
+    return parent::execute();
+  }
+
+}
+
+/**
+ * SQLite specific implementation of DeleteQuery.
+ */
+class DeleteQuery_sqlite extends DeleteQuery {
+  public function execute() {
+    // When the WHERE is omitted from a DELETE statement and the table being
+    // deleted has no triggers, SQLite uses an optimization to erase the entire
+    // table content without having to visit each row of the table individually.
+    // Prior to SQLite 3.6.5, SQLite does not return the actual number of rows
+    // deleted by that optimized "truncate" optimization. But we want to return
+    // the number of rows affected, so we calculate it directly.
+    if (!count($this->condition)) {
+      $total_rows = $this->connection->query('SELECT COUNT(*) FROM {' . $this->connection->escapeTable($this->table) . '}')->fetchField();
+      parent::execute();
+      return $total_rows;
+    }
+    else {
+      return parent::execute();
+    }
+  }
+}
+
+/**
+ * SQLite specific implementation of TruncateQuery.
+ *
+ * SQLite doesn't support TRUNCATE, but a DELETE query with no condition has
+ * exactly the effect (it is implemented by DROPing the table).
+ */
+class TruncateQuery_sqlite extends TruncateQuery {
+  public function __toString() {
+    // Create a sanitized comment string to prepend to the query.
+    $comments = $this->connection->makeComment($this->comments);
+
+    return $comments . 'DELETE FROM {' . $this->connection->escapeTable($this->table) . '} ';
+  }
+}
+
+/**
+ * @} End of "addtogroup database".
+ */