Search results - just show the first item of ListPreference entries

- need to increment the database model version to force re-indexing
- change entries separator from SPACE to PIPE
- just show the first entries value in the Search results

Change-Id: I747218ff3528c3231c0209f8870c12f65e036070

src/com/android/settings/search/Index.java

@@ -100,6 +100,8 @@ public class Index {
     public static final int COLUMN_INDEX_ENABLED = 12;
     public static final int COLUMN_INDEX_KEY = 13;
 
+    public static final String ENTRIES_SEPARATOR = "|";
+
     // If you change the order of columns here, you SHOULD change the COLUMN_INDEX_XXX values
     private static final String[] SELECT_COLUMNS = new String[] {
             IndexColumns.DATA_RANK,               // 0
@@ -994,7 +996,7 @@ public class Index {
         final StringBuilder result = new StringBuilder();
         for (int n = 0; n < count; n++) {
             result.append(data[n]);
-            result.append(" ");
+            result.append(ENTRIES_SEPARATOR);
         }
         return result.toString();
     }

src/com/android/settings/search/IndexDatabaseHelper.java

@@ -28,7 +28,7 @@ public class IndexDatabaseHelper extends SQLiteOpenHelper {
     private static final String TAG = "IndexDatabaseHelper";
 
     private static final String DATABASE_NAME = "search_index.db";
-    private static final int DATABASE_VERSION = 108;
+    private static final int DATABASE_VERSION = 109;
 
     public interface Tables {
         public static final String TABLE_PREFS_INDEX = "prefs_index";