/[cvs]/nfo/php/libs/org.netfrag.glib/DesignPattern/RemoteProxy.php
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revision 1.6 by joko, Wed Mar 5 17:28:43 2003 UTC revision 1.12 by joko, Sat Mar 29 08:01:21 2003 UTC
# Line 5  Line 5 
5   * @author Andreas Motl <andreas.motl@ilo.de>   * @author Andreas Motl <andreas.motl@ilo.de>
6   * @package org.netfrag.glib   * @package org.netfrag.glib
7   * @name DesignPattern::RemoteProxy   * @name DesignPattern::RemoteProxy
  * @filesource  
8   *   *
9   *   *
10     */
11    
12    
13    /**
14   * <b>Cvs-Log:</b>   * <b>Cvs-Log:</b>
15   *   *
16   * <pre>   * <pre>
# Line 15  Line 18 
18   *    $Id$   *    $Id$
19   * -------------------------------------------------------------------------   * -------------------------------------------------------------------------
20   *    $Log$   *    $Log$
21     *    Revision 1.12  2003/03/29 08:01:21  joko
22     *    modified ErrorBoxing
23     *
24     *    Revision 1.11  2003/03/28 06:44:51  joko
25     *    VERBOSE mode
26     *
27     *    Revision 1.10  2003/03/28 03:05:54  joko
28     *    more fancy debugging-output
29     *
30     *    Revision 1.9  2003/03/10 23:05:25  joko
31     *    + fixed metadata for phpDocumentor
32     *
33     *    Revision 1.8  2003/03/10 22:31:56  joko
34     *    + fixed metadata for phpDocumentor
35     *
36     *    Revision 1.7  2003/03/09 15:51:44  joko
37     *    + additional metadata for Autodia
38     *
39   *    Revision 1.6  2003/03/05 17:28:43  joko   *    Revision 1.6  2003/03/05 17:28:43  joko
40   *    updated docu (phpDocumentor testing....)   *    updated docu (phpDocumentor testing....)
41   *   *
# Line 133  loadModule('DesignPattern::Proxy'); Line 154  loadModule('DesignPattern::Proxy');
154    
155    
156  /**  /**
157   * Data::Driver::Proxy  --  Multiple stage data fetching and caching   * DesignPattern::RemoteProxy  --  Multiple stage data fetching and caching
158   *   *
159   *   *
160   * This class (Data::Driver::Proxy) provides an abstract framework   * This class (DesignPattern::RemoteProxy) provides an abstract framework
161   * for loading/saving arbitrary data from/to data storages interfaced   * for loading/saving arbitrary data from/to data storages interfaced
162   * by storage *proxy*-drivers.   * by storage *proxy*-drivers.
163   * Don't mix these up with the concrete storage *handle*-drivers   * Don't mix these up with the concrete storage *handle*-drivers
# Line 145  loadModule('DesignPattern::Proxy'); Line 166  loadModule('DesignPattern::Proxy');
166   * providing a more highlevel, consistent API making   * providing a more highlevel, consistent API making
167   * it easier for Data::Driver::Proxy to do its main work:   * it easier for Data::Driver::Proxy to do its main work:
168   *   *
169     * quote from: http://home.earthlink.net/~huston2/dp/proxy.html
170     * "A remote proxy provides a local representative for an
171     * object that resides in a different address space. This is
172     * what the "stub" code in RPC and CORBA provides."
173     *
174     *
175   * Multiple stage data fetching and caching:   * Multiple stage data fetching and caching:
176   *   *
177   * <pre>   * <pre>
# Line 197  loadModule('DesignPattern::Proxy'); Line 224  loadModule('DesignPattern::Proxy');
224   * An attempt to implement some software design patterns   * An attempt to implement some software design patterns
225   * --- RemoteProxyPattern   * --- RemoteProxyPattern
226   *   *
227     * @link http://www.agcs.com/supportv2/techpapers/patterns/papers/tutnotes/sld017.htm
228     * @link http://home.earthlink.net/~huston2/dp/proxy.html
229     * @link http://wiki.cs.uiuc.edu/PatternStories/RemoteObject
230   * @link http://c2.com/cgi-bin/wiki?ProxyPattern   * @link http://c2.com/cgi-bin/wiki?ProxyPattern
231     * @link http://c2.com/cgi-bin/wiki?LazyProxies
232   *   *
233   * @author Andreas Motl <andreas.motl@ilo.de>   * @author Andreas Motl <andreas.motl@ilo.de>
234   * @link http://www.netfrag.org/~joko/   * @link http://www.netfrag.org/~joko/
# Line 211  loadModule('DesignPattern::Proxy'); Line 242  loadModule('DesignPattern::Proxy');
242   * @name DesignPattern::RemoteProxy   * @name DesignPattern::RemoteProxy
243   *   *
244   *   *
245   * @todo   * @todo extend options to en-/disable caching via a) session and/or b) database
246   * <pre>   *           make feature available via runtime setter-method to these options
247   * x extend options to en-/disable caching via a) session and/or b) database   * @todo PEAR::Cache for caching purposes!!!
248   *   o make feature available via runtime setter-method to these options   * @todo refactor database access: use PEAR for this! no more 'connectdb' here!!!
249   * o use PEAR::Cache for caching purposes!!!   * @todo make database connection more flexible to make possible
250   * o refactor database access: use PEAR for this! no more 'connectdb' here!!!   *           to have different (probably named) proxy databases (besides a "main database")
251   * o make database connection more flexible to make possible   * @todo rename this to Data::Proxy? or split into Data::Query, Data::Result and Data::Wrapper?
252   *     to have different (probably named) proxy databases (besides a "main database")   * @todo refactor this to a "RemoteObject" class!!! (inheriting from DesignPattern::RemoteObject)
253   * o rename this to Data::Proxy? or split into Data::Query, Data::Result and Data::Wrapper?   * @todo rename this to "DesignPattern::LazyRemoteProxy"???
  * </pre>  
254   *   *
255   */   */
256  class DesignPattern_RemoteProxy extends DesignPattern_Proxy {  class DesignPattern_RemoteProxy extends DesignPattern_Proxy {
# Line 275  class DesignPattern_RemoteProxy extends Line 305  class DesignPattern_RemoteProxy extends
305        session_register_safe("proxy");        session_register_safe("proxy");
306      }        }  
307    
308        /**
309         * <!-- Autodia -->
310         * can do: (this is metadata supplied for Autodia, don't delete!)
311         *  $this->backend = new DataSource_Proxy_XMLRPC()
312         *
313         */
314    
315      if ($this->meta[remote]) {      if ($this->meta[remote]) {
316        //$this->backend = mkObject('Data::Driver::RPC::Remote', $this->meta[rpcinfo]);        //$this->backend = mkObject('Data::Driver::RPC::Remote', $this->meta[rpcinfo]);
317        $this->backend = php::mkComponent('DataSource::Proxy::XMLRPC', $this->meta[rpcinfo]);        $this->backend = php::mkComponent('DataSource::Proxy::XMLRPC', $this->meta[rpcinfo]);
# Line 448  class DesignPattern_RemoteProxy extends Line 485  class DesignPattern_RemoteProxy extends
485            logp(get_class($this) . "->_loadRemote: argument 'guid' requires 'classname'", PEAR_LOG_WARNING);            logp(get_class($this) . "->_loadRemote: argument 'guid' requires 'classname'", PEAR_LOG_WARNING);
486            return;            return;
487          }          }
488            logp(get_class($this) . "->_loadRemote: getObjectByGuid", PEAR_LOG_DEBUG);
489          $args = array( guid => $this->objectId, classname => $this->meta[classname] );          $args = array( guid => $this->objectId, classname => $this->meta[classname] );
490          $result = $this->backend->send('getObjectByGuid', $args );          $result = $this->backend->send('getObjectByGuid', $args );
491    
# Line 456  class DesignPattern_RemoteProxy extends Line 494  class DesignPattern_RemoteProxy extends
494            logp(get_class($this) . "->_loadRemote: argument 'oid' requires valid objectId", PEAR_LOG_WARNING);            logp(get_class($this) . "->_loadRemote: argument 'oid' requires valid objectId", PEAR_LOG_WARNING);
495            return;            return;
496          }          }
497            logp(get_class($this) . "->_loadRemote: getObject", PEAR_LOG_DEBUG);
498          $result = $this->backend->send('getObject', $this->objectId);          $result = $this->backend->send('getObject', $this->objectId);
499    
500        } elseif ($this->meta[key]) {        } elseif ($this->meta[key]) {
# Line 469  class DesignPattern_RemoteProxy extends Line 508  class DesignPattern_RemoteProxy extends
508            return;            return;
509          }          }
510          */          */
511            //logp(get_class($this) . "->_loadRemote: $this->meta[command](" . join(' ', $this->meta[query]) . ")", PEAR_LOG_DEBUG);
512            //print Dumper(array($this->meta[command], $this->meta[query]));
513          $result = $this->backend->send($this->meta[command], $this->meta[query]);          $result = $this->backend->send($this->meta[command], $this->meta[query]);
514                    
515        }        }
516    
517        //print "result: " . dumpVar($result) . "<br>";
518    
519        $status = $this->backend->getStatus();
520        //print Dumper($status);
521            
522      if ($result) {      $style = html_style("text/css", '.boxlabel_yellow { color: yellow; font-weight:bold; }');
523        //print "result: " . dumpVar($result) . "<br>";      $statusbox = html_div();
524        if (count($result) == 0) { return; }      $statusbox->set_style('background: red; border: 2px black groove; width:640px; padding:10px; margin:40px;');
525        $statusbox->add( html_span('boxlabel_yellow', "Connected:"), $status[connected], html_br() );
526        foreach ($status[errors] as $error) {
527          $statusbox->add( html_span('boxlabel_yellow', "Error($error[code]):"), $error[message], html_br() );
528        }
529        
530        if (is_array($result)) {
531          $good = 1;
532        } else {
533          $message = get_class($this) . "->_loadRemote: Error while trying to talk to remote side. Please check wire, socket or api.";
534          logp($message, PEAR_LOG_CRIT);
535          $statusbox->add( html_span('boxlabel_yellow', "Critical:"), $message, html_br() );
536        }
537    
538        if ($good && sizeof($result)) {
539                
540        // FIXME: this is dangerous!        // FIXME: this is dangerous!
541        if ($_GET[debug]) {        if ($_GET[debug]) {
# Line 490  class DesignPattern_RemoteProxy extends Line 548  class DesignPattern_RemoteProxy extends
548        $this->_saveProxy();        $this->_saveProxy();
549        //print "oid: $this->objectId<br>";        //print "oid: $this->objectId<br>";
550        $this->flushState();        $this->flushState();
551        
552      } else {      } else {
553        //print "Error in _loadRemote!!!<br>";        if (constants::get('VERBOSE') || constants::get('ERRORS_ONLY')) {
554        logp(get_class($this) . "->_loadRemote: error while trying to talk to remote side", PEAR_LOG_CRIT);          print $style->render();
555            print $statusbox->render();
556          } else {
557            foreach ($status[errors] as $error) {
558              print Dumper($error);
559            }
560          }
561        
562      }      }
563            
564    }    }
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