From 9d6182d8d00b99a608b49ae47a5ccd03187802fe Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 11 Oct 2009 13:43:37 +0000
Subject: - Patch #597556 by Berdir: return status to indicate executed query
 in MergeQuery::execute().

---
 includes/database/query.inc | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'includes/database/query.inc')

diff --git a/includes/database/query.inc b/includes/database/query.inc
index 87b903d96..98723496d 100644
--- a/includes/database/query.inc
+++ b/includes/database/query.inc
@@ -548,6 +548,15 @@ class InsertQuery extends Query {
  * General class for an abstracted MERGE operation.
  */
 class MergeQuery extends Query {
+  /**
+   * Returned by execute() if an INSERT query has been executed.
+   */
+  const STATUS_INSERT = 1;
+
+  /**
+   * Returned by execute() if an UPDATE query has been executed.
+   */
+  const STATUS_UPDATE = 2;
 
   /**
    * The table on which to insert.
@@ -761,6 +770,14 @@ class MergeQuery extends Query {
     return TRUE;
   }
 
+  /**
+   * Run the MERGE query against the database.
+   *
+   * @return
+   *   A status indicating the executed operation:
+   *   - MergeQuery::STATUS_INSERT for an INSERT operation.
+   *   - MergeQuery::STATUS_UPDATE for an UPDATE operation.
+   */
   public function execute() {
     // If validation fails, simply return NULL.
     // Note that validation routines in preExecute() may throw exceptions instead.
@@ -813,12 +830,14 @@ class MergeQuery extends Query {
           $update->expression($field, $expression['expression'], $expression['arguments']);
         }
         $update->execute();
+        return MergeQuery::STATUS_UPDATE;
       }
     }
     else {
       // If there is no existing record, run an insert query.
       $insert_fields = $this->insertFields + $this->keyFields;
       $this->connection->insert($this->table, $this->queryOptions)->fields($insert_fields)->execute();
+      return MergeQuery::STATUS_INSERT;
     }
 
     // Transaction commits here where $transaction looses scope.
-- 
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