Changeset 2210

Timestamp:

01/28/09 16:18:11 (3 years ago)

Author:

CrawfordCurrie

Message:

Item453: jumped the gun in the doc; acceleration of %SEARCH is *not* supported (yet)

File:

• trunk/DBCacheContrib/data/System/DBCacheContrib.txt (modified) (4 diffs)

trunk/DBCacheContrib/data/System/DBCacheContrib.txt

@@ -20 +20 @@
 This module supports fast structured queries over topics in a web. It uses
 a high performance cache of the topic data to deliver much better search
-performance.
+performance. Different back-end techologies can be used to implement the
+cache, to allow simple tradeoffs between scaling and raw performance.
 
 Historically this module was designed to be used with a
@@ -28 +29 @@
 a simple [[%TOPIC%#QueryLanguage][query language]].
 
-The %TOPIC% can also be used to accelerate standard queries made using the
-=[[QuerySearch][type="query"]= feature of %SEARCH.
-
 ---+++ Features
    * Perform efficient structured queries on data in forms
 
 ---+++ Using the built-in query language
-You can think of the database as an array of all the topics in a web. Each
-array entry is a map (or hash in perl terms) that maps a set of field names to
-values.
+The query language supported by DBCacheContrib is very similar to the query language used with %SEARCH, which was derived from it. However the underlying schema is somewhat different.
+
+You can think of the database as an map of all the topics in a web. Each
+entry is itself a map (or hash, in perl terms) that maps a set of field
+names to values.
 
 Each topic in the web automatically gets a number of standard fields, generated
@@ -45 +45 @@
         * =_up=         - _reference_ to the Map of the parent topic, if it exists
         * =attachments= - array of Maps, each of which contains:
-                *  =_up= - _reference_ to the Map for the topic
-                *  =name= - attachment name
+                * =_up= - _reference_ to the Map for the topic
+                * =name= - attachment name
                 * =attr= - e.g hidden
                 * =comment= - attachment comment
@@ -128 +128 @@
 
 ---++ Contrib Info
-|  Author: | Foswiki:Main/CrawfordCurrie kttp://c-dot.co.uk |
+|  Author: | Foswiki:Main/CrawfordCurrie http://c-dot.co.uk |
 |  Copyright &copy;: | This code is based on an original development of Motorola Inc. and is protected by the following copyrights: <br>Copyright @copy 2002-2003 Motorola Inc. All Rights Reserved. <br>Portions copyright &copy; 2004. Crawford Currie http://www.c-dot.co.uk |
 |  License: | GPL |