Restructure before WCM indexer impl.

Fix and retest 2.1 test issues.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5569 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/search/IndexerSPI.java

@@ -26,10 +26,27 @@ package org.alfresco.repo.search;
 
 import org.alfresco.repo.search.impl.lucene.fts.FTSIndexerAware;
 
+/**
+ * Add support for FTS indexing
+ * 
+ * @author andyh
+ *
+ */
 public interface IndexerSPI extends Indexer
 {
+    /**
+     * Register call back handler when the indexing chunk is done
+     * 
+     * @param callBack
+     */
     public void registerCallBack(FTSIndexerAware callBack);
 
+    /**
+     * Peform a chunk of background FTS (and other non atomic property) indexing
+     * 
+     * @param i
+     * @return - the number of docs updates
+     */
     public int updateFullTextSearch(int i);
 
 }