[pLog-svn] r2118 - plog/branches/plog-1.1-ben/class/dao

[ork at devel.plogworld.net]

Author: ork
Date: 2005-05-31 00:19:27 +0000 (Tue, 31 May 2005)
New Revision: 2118

Added:
   plog/branches/plog-1.1-ben/class/dao/blogarticles.class.php
Log:
introducing another cache-only object. this object will store all article ids of a blog and will return the article ids when asked for. :-)
there're several functions to select the right article ids. its best to take a look at Articles::getBlogArticles() to understand the way this cache is working.

this is a work in progress, while this might not produce any error right now, please do not use this in an productive environment. there _are_ bugs in this version :-)



Added: plog/branches/plog-1.1-ben/class/dao/blogarticles.class.php
===================================================================
--- plog/branches/plog-1.1-ben/class/dao/blogarticles.class.php	2005-05-30 21:37:37 UTC (rev 2117)
+++ plog/branches/plog-1.1-ben/class/dao/blogarticles.class.php	2005-05-31 00:19:27 UTC (rev 2118)
@@ -0,0 +1,130 @@
+<?php
+	require_once( PLOG_CLASS_PATH."class/object/object.class.php" );
+
+    /**
+     * \ingroup DAO
+     *
+     * Cache Object to cache all article ids of a blog, this information will not be stored 
+     * in the db but only in the disk-cache.
+     */
+    class BlogArticles extends Object {
+
+        var $_blogId;
+        var $_articles           = array();
+        var $_articlesByCategory = array();
+        var $_articlesByDate     = array();
+        var $_articlesByStatus   = array();
+        var $_articleStatus      = array();
+        var $_articleDate        = array();
+   
+        /**
+         * Constructor
+         *
+         * The constructor expects an array of sql rows instead of articles,
+         * because to build a complete article we need to fetch to many information.
+         * This class will only return ids, so we don't need full article objects,
+         * please use Articles::getArticle() to fetch an article.
+         *
+         * @param blogId The blogId of the links to fetch
+         * @blogArticlesSqlRows array containing sql row objects of articles
+         */
+        function BlogArticles( $blogId, $blogArticlesSqlRows )
+        {
+            $this->_blogId = $blogId;
+
+            foreach( $blogArticlesSqlRows as $articleSqlRow ) {
+                $articleId  = $articleSqlRow['id'];
+                $categoryId = $articleSqlRow['category_id'];
+                $date       = $articleSqlRow['date'];
+                $status     = $articleSqlRow['status'];
+
+                $this->_articles[]                        = $articleId;
+                $this->_articlesByCategory[$categoryId][] = $articleId;
+                $this->_articlesByDate[$date][]           = $articleId;
+                $this->_articlesByStatus[$status][]       = $articleId;
+                $this->_articleStatus[$articleId]         = $status;
+                $this->_articleDate[$articleId]           = $date;
+            }
+        }
+
+        /**
+         * Get the BlogId for the article ids stored in this object
+         */
+        function getBlogId()
+        {
+            return $this->_blogId;
+        }
+
+        /**
+         * Get all article ids for current blog
+         */
+        function getArticleIds()
+        {
+            return $this->_articles;
+        }
+
+        function getArticleIdsByCategory( $categoryId, $articleIds = null )
+        {
+            if( !array_key_exists($categoryId, $this->_articlesByCategory) )
+                return array();
+
+            if( $articleIds == null )
+                return $this->_articlesByCategory[$categoryId];
+
+            $returnIds = array_intersect( $articleIds, $this->_articlesByCategory[$categoryId] );
+
+            return $returnIds;
+        }
+
+        function getArticleIdsByStatus( $status, $articleIds = null )
+        {
+            require_once( PLOG_CLASS_PATH . 'class/dao/articlestatus.class.php' );
+
+            if( $articleIds == null )
+                $articleIds = $this->getArticleIds();
+
+            if( $status == POST_STATUS_ALL )
+                return $articleIds;
+
+            if( !array_key_exists($status, $this->_articlesByStatus) )
+                return array();
+
+            $returnIds = array_intersect( $articleIds, $this->_articlesByStatus[$status] );
+
+            return $returnIds;
+        }
+
+        function getArticleIdsByDate( $date, $articleIds = null )
+        {
+            if( $articleIds == null )
+                $articleIds = $this->getArticleIds();
+
+            $matchingArticleIds = array();
+            foreach( array_keys($this->_articlesByDate) as $articleDate ) {
+                if( preg_match('/^'.$date.'/', $articleDate) ) {
+                    $matchingArticleIds = array_merge( $matchingArticleIds, 
+                                                       $this->_articlesByDate[$articleDate] );
+                }
+            }
+
+            $returnIds = array_intersect( $articleIds, $matchingArticleIds );
+
+            return $returnIds;
+        }
+
+        function getArticleIdsBefore( $date, $articleIds = null )
+        {
+            if( $articleIds == null )
+                $articleIds = $this->getArticleIds();
+
+            $matchingArticleIds = array();
+
+            foreach( $articleIds as $articleId ) {
+                if( $date > $this->_articleDate[$articleId] )
+                    $matchingArticleIds[] = $articleId;
+            }
+
+            return $matchingArticleIds;
+        }
+    }
+?>