From 24806e6ae042d0c6b8acb124f2c5f7d5f507dff6 Mon Sep 17 00:00:00 2001
From: James Turk <james.p.turk@gmail.com>
Date: Fri, 13 Apr 2012 13:04:36 -0400
Subject: [PATCH] kernel.extract_text

---
 oyster/core.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/oyster/core.py b/oyster/core.py
index 415718c..6b8460c 100644
--- a/oyster/core.py
+++ b/oyster/core.py
@@ -257,6 +257,16 @@ class Kernel(object):
         storage = self.storage[doc_class['storage_engine']]
         return storage.get(doc['versions'][-1]['storage_key'])
 
+    def extract_text(self, doc):
+        version = self.get_last_version(doc)
+        doc_class = self.doc_classes[doc['doc_class']]
+        try:
+            extract_text = doc_class['extract_text']
+        except KeyError:
+            raise ValueError('doc_class %s missing extract_text' %
+                             doc['doc_class'])
+        return extract_text(doc, version)
+
 
 def _get_configured_kernel():
     """ factory, gets a connection configured with oyster.conf.settings """