/[cvs]/nfo/php/libs/org.netfrag.flib/Application/RPC/ProxyObject.php
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revision 1.1 by joko, Sun Dec 1 17:23:58 2002 UTC revision 1.6 by jonen, Sun Dec 22 13:26:20 2002 UTC
# Line 3  Line 3 
3  ##    $Id$  ##    $Id$
4  ##    -------------------------------------------------------------------------------------  ##    -------------------------------------------------------------------------------------
5  ##    $Log$  ##    $Log$
6    ##    Revision 1.6  2002/12/22 13:26:20  jonen
7    ##    + added support of tangram independent id (e.g. Data::UUID) toggled by option at conrtuctor
8    ##
9    ##    Revision 1.5  2002/12/18 22:36:49  jonen
10    ##    + added support to get remote objects via backend via 'guid'
11    ##    + renamed '_loadBackend' to '_loadRemote'
12    ##    + constructor now accepts additional options:
13    ##      + remote: try to get object via '_loadRemote' ...
14    ##      + oid: use the given identifier as an 'oid' when doing '_loadRemote'
15    ##      + guid: use the given identifier as a 'guid' when doing '_loadRemote'
16    ##
17    ##    Revision 1.4  2002/12/12 02:46:31  joko
18    ##    + state (session) gets flushed when data was successfully loaded from remote side
19    ##    + fixed _loadBackend
20    ##    + fixed flushState
21    ##
22    ##    Revision 1.3  2002/12/06 04:12:54  joko
23    ##    + replaced 'xyzCache' through 'xyzProxy'
24    ##    + function store(...)
25    ##
26    ##    Revision 1.2  2002/12/05 21:44:09  joko
27    ##    + debugging
28    ##
29  ##    Revision 1.1  2002/12/01 17:23:58  joko  ##    Revision 1.1  2002/12/01 17:23:58  joko
30  ##    + initial check-in  ##    + initial check-in
31  ##  ##
# Line 59  class ProxyObject { Line 82  class ProxyObject {
82    var $attributes;    var $attributes;
83    var $backend;    var $backend;
84    
85    function ProxyObject($objectId = "") {    function ProxyObject($objectId = "", $options = array() ) {
86      session_register_safe("proxy");      session_register_safe("proxy");
87      $this->backend = new Remote;      $this->backend = new Remote;
88      $this->_init($objectId);      $this->_init($objectId, $options);
89    }    }
90    
91    function _init($objectId="") {    function _init($objectId="", $options = array() ) {
92      if ($objectId) {      if ($objectId) {
93        $this->objectId = $objectId;        $this->objectId = $objectId;
94          $this->meta = $options;
95          
96          // set default load mechanismn
97          if( $this->meta[remote] && ((!$this->meta[oid] && !$this->meta[guid]) || ($this->meta[oid] && $this->meta[guid])) ) {
98            $this->meta[oid] = 1;
99          }
100    
101        $this->load();        $this->load();
102        //$this->_saveCache();        //$this->_saveProxy();
103      }      }
104    }    }
105    
106    function load() {    function load() {
107      if (!$this->_loadState()) {      if (!$this->_loadState()) {
108        if (!$this->_loadCache()) {        if (!$this->_loadProxy()) {
109          $this->_loadBackend();  
110            // just load object from remote side if its flagged to be a remote one ...
111            if ($this->meta[remote]) {
112              $this->_loadRemote();
113            }
114    
115        }        }
116      }      }
117    }      }  
# Line 94  class ProxyObject { Line 129  class ProxyObject {
129    
130    function flush() {    function flush() {
131      $this->flushState();      $this->flushState();
132      $this->flushCache();      $this->flushProxy();
133    }          }      
134    
135    function _commit() {    function _commit() {
136      $this->_saveBackend($this->attributes);      $this->_saveBackend($this->attributes);
137      $this->flushState();      $this->flushState();
138      $this->flushCache();      $this->flushProxy();
139    }      }  
140    
141    
# Line 109  class ProxyObject { Line 144  class ProxyObject {
144    function _create() {    function _create() {
145      $this->_createBackend($this->attributes);      $this->_createBackend($this->attributes);
146      $this->flushState();      $this->flushState();
147      $this->flushCache();      $this->flushProxy();
148    }      }  
149    */    */
150    
# Line 125  class ProxyObject { Line 160  class ProxyObject {
160      $this->attributes = $data;      $this->attributes = $data;
161    }    }
162    
163    function flushCache() {    function flushProxy() {
164          connectdb();          connectdb();
165      $sql = "DELETE FROM f_proxy WHERE oid='$this->objectId'";      $sql = "DELETE FROM f_proxy WHERE oid='$this->objectId'";
166      send_sql($sql);      send_sql($sql);
# Line 134  class ProxyObject { Line 169  class ProxyObject {
169    function flushState() {    function flushState() {
170      global $proxy;      global $proxy;
171      unset($proxy[$this->objectId]);      unset($proxy[$this->objectId]);
172        $this->meta[decoded] = 0;
173    }    }
174    
175    function _loadState() {    function _loadState() {
# Line 155  class ProxyObject { Line 191  class ProxyObject {
191      // TODO: throw exception-message back to user if operation fails      // TODO: throw exception-message back to user if operation fails
192    }    }
193    
194    function _loadCache() {    function _loadProxy() {
195      logp(get_class($this) . "->_loadCache()", LOG_DEBUG);      logp(get_class($this) . "->_loadProxy()", LOG_DEBUG);
196      connectdb();      connectdb();
197      $sql = "SELECT payload FROM f_proxy WHERE oid='$this->objectId'";      $sql = "SELECT payload FROM f_proxy WHERE oid='$this->objectId'";
198      if ($res = send_sql($sql)) {      if ($res = send_sql($sql)) {
# Line 169  class ProxyObject { Line 205  class ProxyObject {
205      }      }
206    }    }
207        
208    function _saveCache() {    // TODO: use PEAR here
209      logp(get_class($this) . "->_saveCache()", LOG_DEBUG);    function _saveProxy() {
210        logp(get_class($this) . "->_saveProxy()", LOG_DEBUG);
211          connectdb();          connectdb();
212          if ($this->payload) {          if ($this->payload) {
213        //$sql = "INSERT INTO f_proxy SET payload='$this->payload' WHERE oid='$this->objectId'";        //$sql = "INSERT INTO f_proxy SET payload='$this->payload' WHERE oid='$this->objectId'";
# Line 182  class ProxyObject { Line 219  class ProxyObject {
219      }      }
220    }    }
221        
222    function _loadBackend() {    function _loadRemote() {
223      logp(get_class($this) . "->_loadBackend()", LOG_DEBUG);      logp(get_class($this) . "->_loadRemote()", LOG_DEBUG);
224        
225      // TODO: test backend for reachability first (eventually cache this information and "reset" it by another party)      // TODO: test backend for reachability first (eventually cache this information and "reset" it by another party)
226      if ($result = $this->backend->call('getObject', $this->objectId)) {      
227        //print dumpVar($result);      // check for guid or oid
228        if($this->meta[guid]) {
229          $args = array( guid => $this->objectId, classname => $this->meta[classname] );
230          $result = $this->backend->send('getObjectByGuid', $args );
231        }
232        if($this->meta[oid]) {
233          $result = $this->backend->send('getObject', $this->objectId);
234        }
235        
236        if ($result) {
237          //print "result: " . dumpVar($result) . "<br>";
238        if (count($result) == 0) { return; }        if (count($result) == 0) { return; }
239          
240          // ----- move this to _encode some times:  $this->_encode()
241        $encoder = new TextEncode($result);        $encoder = new TextEncode($result);
242        $encoder->toISO();        $encoder->toISO();
243        if ($_GET[debug]) {        if ($_GET[debug]) {
244          print dumpVar($result);          print dumpVar($result);
245        }        }
246        $this->payload = serialize($result);        $this->payload = serialize($result);
247        $this->_saveCache();        // ----- move this to _encode some times
248          
249          $this->_saveProxy();
250          //print "oid: $this->objectId<br>";
251          $this->flushState();
252        } else {
253          print "Error in _loadRemote!!!<br>";
254      }      }
255        
256    }    }
257        
258    function _saveBackend($result) {    function _saveBackend($result) {
259      logp(get_class($this) . "->_saveBackend()", LOG_DEBUG);      logp(get_class($this) . "->_saveBackend()", LOG_DEBUG);
260      $encoder = new TextEncode($result);  
261      $encoder->toUTF8();      //$encoder = new TextEncode($result);
262      $response = $this->backend->send('saveObject', array('oid' => $this->objectId, 'data' => $result) );      //$encoder->toUTF8();
263    
264        // check for guid or oid
265        if($this->meta[guid]) {
266          $args = array( 'guid' => $this->objectId, 'classname' => $this->meta[classname], 'data' => $result );
267          $response = $this->backend->send('saveObjectByGuid', $args, array( utf8 => 1) );
268        }
269        if($this->meta[oid]) {
270          $response = $this->backend->send('saveObject', array('oid' => $this->objectId, 'data' => $result), array( utf8 => 1)  );
271        }
272    }    }
273    
274    function _decode() {    function _decode() {
# Line 213  class ProxyObject { Line 279  class ProxyObject {
279        $this->meta[decoded] = 1;        $this->meta[decoded] = 1;
280      }      }
281    }    }
282      
283      function store($struct) {
284        $this->payload = serialize($struct);
285        $this->_saveProxy();
286      }
287    
288  }  }
289    
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