/[cvs]/nfo/php/libs/org.netfrag.glib/Data/Lift.php
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revision 1.1 by joko, Sat Feb 22 16:20:04 2003 UTC revision 1.5 by root, Sat Mar 8 20:04:59 2003 UTC
# Line 1  Line 1 
1  <?  <?
2    /**
3     * This file contains the Data::Lift component.
4     *
5     * @author Andreas Motl <andreas.motl@ilo.de>
6     * @package org.netfrag.glib
7     * @name Data::Lift
8     *
9     */
10    
11  //    -------------------------------------------------------------------------  //    -------------------------------------------------------------------------
12  //    $Id$  //    $Id$
13  //    -------------------------------------------------------------------------  //    -------------------------------------------------------------------------
14  //    $Log$  //    $Log$
15    //    Revision 1.5  2003/03/08 20:04:59  root
16    //    + optimized comments for Autodia
17    //
18    //    Revision 1.4  2003/03/08 18:22:23  joko
19    //    updated comments: now in phpDocumentor style
20    //
21    //    Revision 1.3  2003/03/03 21:28:11  joko
22    //    updated comments
23    //
24    //    Revision 1.2  2003/02/27 16:30:17  joko
25    //    + enhanced '_autodetect'
26    //    + added '_check'
27    //    + now throughout returning lifted values by reference
28    //
29  //    Revision 1.1  2003/02/22 16:20:04  joko  //    Revision 1.1  2003/02/22 16:20:04  joko
30  //    + initial commit  //    + initial commit
31  //  //
32  //    -------------------------------------------------------------------------  //    -------------------------------------------------------------------------
33    
34    
 //    Data::Lift  -  Pass data around between locations doing operations on it  
35    
36    
37    /**
38     * --- Data::Lift
39     *
40     * <pre>
41     *    Data::Lift  -  Pass data around between various "actors".
42     *
43     *    These "actors" are kinda plugin-modules
44     *    lying at "locations" and actually mungle the data.
45     *
46     *    "Locations" are by now:
47     *      x local filesystem
48     *      o remote anything
49     *
50     *    The "actors" require (by now) to be native php classes
51     *    having a method "perform". Please have a look at others
52     *    lying in the Data::Lift namespace at org.netfrag.glib to
53     *    get a picture of how to implement own "actors".
54     * </pre>
55     *
56     *
57     * @author Andreas Motl <andreas.motl@ilo.de>
58     * @copyright (c) 2003 - All Rights reserved.
59     * @license GNU LGPL (GNU Lesser General Public License)
60     *
61     * @link http://www.netfrag.org/~joko/
62     * @link http://www.gnu.org/licenses/lgpl.txt
63     *
64     * @package org.netfrag.glib
65     * @subpackage Data::Lift
66     * @name Data::Lift
67     *
68     * @link http://cvs.netfrag.org/php/libs/org.netfrag.glib
69     *
70     *
71     * @todo refactor Data::Deep to a plugin module
72     * @todo refactor Data::Encode to a plugin module
73     * @todo combine Data::Lift and Data::Container somehow
74     * @todo integrate with Data::Driver somehow  --  proposal:
75     *         //  $lift = ne w Data::Lift($locator);
76     *         //  $lift->perform();     // talks to a Data::Driver
77     *
78     *
79     */
80  class Data_Lift {  class Data_Lift {
81      
82      /**
83       * this is to trick Autodia let understanding "namespaces" in php
84       * unless the pattern can be tweaked by mode (namespace=0|1)
85       * // $this = ne w Data::Lift(&$payload, $options = array());
86       */
87    
88    var $dblocations;    var $dblocations;
89    var $actor;    var $actor;
90      var $actor_instance;
91    
92    var $payload;    var $payload;
93    var $vartype;    var $vartype;
# Line 38  class Data_Lift { Line 110  class Data_Lift {
110        
111    function set(&$payload, $metatype = '') {    function set(&$payload, $metatype = '') {
112      $this->payload = &$payload;      $this->payload = &$payload;
113        
114      if ($metatype) { $this->metatype = $metatype; }      if ($metatype) { $this->metatype = $metatype; }
115      $this->_autodetect();      $this->_autodetect();
116        $this->_check();
117    }    }
118        
119    function _autodetect() {    function _autodetect() {
120    
121      // FIXME: distinguish between is_array and is_hash here!      // FIXME: distinguish between is_array and is_hash here!
122      if (is_array($this->payload)) {      if (is_object($this->payload)) {
123          $this->vartype = 'object';
124          $this->metatype = get_class($this->payload);
125          if ($parent_class = get_parent_class($this->payload)) {
126            $this->metatype = $parent_class;
127          }
128    
129        } elseif (is_array($this->payload)) {
130        $this->vartype = 'hash';        $this->vartype = 'hash';
131    
132        } else {
133          $this->vartype = 'scalar';
134        
135      }      }
136    }    }
137        
138    function to($level) {    function _check() {
139    
140        $good = $this->vartype && $this->metatype;
141        
142        //print "metatype: " . $this->metatype . "<br>";
143        
144        if (!$good) {
145          print "Data::Lift cannot handle this payload: ";
146          print "(vartype=" . $this->vartype . ", metatype=" . $this->metatype . ")<br/>";
147          print Dumper($this->payload);
148        }
149        
150      }
151      
152      function &to($level) {
153      $this->_resolve_location($level);      $this->_resolve_location($level);
154      //print Dumper($this->actor);      //print Dumper($this->actor);
155      //exit;      //exit;
156      //$result = array( name => 'abc', description => 'def' );      //$result = array( name => 'abc', description => 'def' );
157      $result = $this->_perform_actor();      $result = &$this->_perform_actor();
158      return $result;      return $result;
159    }    }
160        
# Line 74  class Data_Lift { Line 174  class Data_Lift {
174            
175    }    }
176    
177    function _perform_actor() {    function &_perform_actor() {
178      //$actor_file = join('/', $this->actor) . '.php';      //$actor_file = join('/', $this->actor) . '.php';
179      //include($actor_file);      //include($actor_file);
180    
181        /**
182         * can do: (this is metadata supplied for Autodia, don't delete!)
183         *  $this->_actor_instance = new Data_Lift_object_tree_common_PEAR_HTML_TreeMenu()
184         *  $this->_actor_instance = new Data_Lift_hash_job_html()
185         */
186    
187      $actor_name = 'Data/Lift/' . join('/', $this->actor);      $actor_name = 'Data/Lift/' . join('/', $this->actor);
188      $actor_object = mkObject($actor_name);      $actor_object = mkObject($actor_name);
189      return $actor_object->perform($this->payload);      return $actor_object->perform($this->payload);
# Line 92  class Data_Lift { Line 199  class Data_Lift {
199    
200  }  }
201    
 ?>  
202    ?>
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