diff --git a/Classes/DataProcessing/ExplodeProcessor.php b/Classes/DataProcessing/ExplodeProcessor.php
index 6e00569..0349f8f 100644
--- a/Classes/DataProcessing/ExplodeProcessor.php
+++ b/Classes/DataProcessing/ExplodeProcessor.php
@@ -33,13 +33,6 @@ class ExplodeProcessor implements ProcessorInterface
             $configuration['delimiter'] = ' ';
         }
 
-        if (is_array($record[$configuration['field']])) {
-            $record[$configuration['field']] = implode(
-                $configuration['delimiter'],
-                $record[$configuration['field']]
-            );
-        }
-
         $record[$configuration['field']] = GeneralUtility::trimExplode(
             $configuration['delimiter'],
             $record[$configuration['field']],
diff --git a/Classes/DataProcessing/ReplaceProcessor.php b/Classes/DataProcessing/ReplaceProcessor.php
new file mode 100644
index 0000000..08beee9
--- /dev/null
+++ b/Classes/DataProcessing/ReplaceProcessor.php
@@ -0,0 +1,42 @@
+<?php
+namespace Codappix\SearchCore\DataProcessing;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * Execute a regular expression replacement.
+ */
+class ReplaceProcessor implements ProcessorInterface
+{
+    public function processRecord(array $record, array $configuration)
+    {
+        if (!isset($configuration['replacement'])) {
+            $configuration['replacement'] = ' ';
+        }
+
+        $record[$configuration['field']] = preg_replace(
+            $configuration['regularExpression'],
+            $configuration['replacement'],
+            $record[$configuration['field']]
+        );
+
+        return $record;
+    }
+}
diff --git a/Classes/DataProcessing/UniqueProcessor.php b/Classes/DataProcessing/UniqueProcessor.php
new file mode 100644
index 0000000..643f78d
--- /dev/null
+++ b/Classes/DataProcessing/UniqueProcessor.php
@@ -0,0 +1,34 @@
+<?php
+namespace Codappix\SearchCore\DataProcessing;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * Execute on a single field to make entries unique.
+ */
+class UniqueProcessor implements ProcessorInterface
+{
+    public function processRecord(array $record, array $configuration)
+    {
+        $record[$configuration['field']] = array_values(array_unique($record[$configuration['field']]));
+
+        return $record;
+    }
+}