/[cvs]/nfo/php/libs/org.netfrag.glib/DesignPattern/Bridge.php
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revision 1.2 by joko, Mon Feb 3 05:01:27 2003 UTC revision 1.5 by joko, Thu Feb 27 18:09:56 2003 UTC
# Line 3  Line 3 
3  //  $Id$  //  $Id$
4  // ---------------------------------------------------------------------------  // ---------------------------------------------------------------------------
5  //  $Log$  //  $Log$
6    //  Revision 1.5  2003/02/27 18:09:56  joko
7    //  mungled mechanism to shift in and pass on arguments
8    //
9    //  Revision 1.4  2003/02/09 17:07:53  joko
10    //  + minor update related to new log level constants
11    //  + generic argument merger to show full constructor args
12    //
13    //  Revision 1.3  2003/02/03 14:46:57  joko
14    //  + wrapped calls to available initializers (constructors, declared startup methods)
15    //  - moved logger-code to DesignPattern::Logger
16    //
17  //  Revision 1.2  2003/02/03 05:01:27  joko  //  Revision 1.2  2003/02/03 05:01:27  joko
18  //  + now attributes can get passed in to the constructors  //  + now attributes can get passed in to the constructors
19  //  //
# Line 14  Line 25 
25    
26  class DesignPattern_Bridge extends DesignPattern_Logger {  class DesignPattern_Bridge extends DesignPattern_Logger {
27    
28    function DesignPattern_Bridge($classname, $attributes = null) {    function DesignPattern_Bridge() {
29    
30        $arg_list = func_get_args();
31        $classname = array_shift($arg_list);
32        
33        // expand single argument
34        if (count($arg_list) == 1) {
35          $arg_list = $arg_list[0];
36        }
37        $attributes = &$arg_list;
38    
39        //print Dumper($attributes);
40    
41        //print "init_bridge!<br>";
42      //return $this->_mkInstance($classname, $attributes);      //return $this->_mkInstance($classname, $attributes);
43        //$this->_init_logger("../core/var/log/logfile.txt", 1);
44        //parent::constructor();
45      $this = $this->_mkInstance($classname, $attributes);      $this = $this->_mkInstance($classname, $attributes);
46        //parent::constructor();
47    //    $this->_init_logger("../core/var/log/logfile.txt", 1);
48        //print Dumper($this);
49        //parent::DesignPattern_Logger();
50      //return $this;      //return $this;
51    }    }
52    
53    function &_mkInstance($classname, $attributes = null) {    function &_mkInstance($classname, $attributes = null) {
54      $this->log( get_class($this) . "->_mkInstance( classname $classname )", LOG_DEBUG );      parent::constructor();
55        $this->log( get_class($this) . "->_mkInstance( classname $classname )" );
56      if (isset($attributes)) {      if (isset($attributes)) {
57        $instance = new $classname($attributes);  //print Dumper($attributes);
58    
59    /*
60          // pass single argument 1:1
61          if (count($attributes) == 1) {
62            $attributes_merged = $attributes[0];
63    
64          
65          
66          // pass hash 1:1
67          } elseif (is_hash($attributes)) {
68            $attributes_merged = $attributes;
69    
70          } else {
71            $attributes_merged = $attributes;
72          }
73    */
74    
75        $args_pass = array();
76        for ($i=0; $i<=count($attributes); $i++) {
77          array_push($args_pass, '$attributes[' . $i . ']');
78        }
79    
80        $arg_string = join(', ', $args_pass);
81    
82    /*
83          // merge entries of numerical indexed arrays together into one hash
84          } else {
85            $attributes_merged = array();
86            foreach ($attributes as $entry) {
87              $attributes_merged = array_merge($attributes_merged, $entry);
88            }
89          }
90    */
91    
92    //print Dumper($attributes_merged);
93    //print Dumper($attributes);
94          //$instance = new $classname($attributes_merged);
95          //$instance = new $classname($attributes[0]);
96          $evalstr = 'return new $classname(' . $arg_string . ');';
97          $instance = eval($evalstr);
98          //print $evalstr . "<br>";
99      } else {      } else {
100        $instance = new $classname;        $instance = new $classname;
101      }      }
102        //$this->log("ok");
103      return $instance;      return $instance;
104    }    }
105    
106    function _mkEmbeddedObjects($args) {    function _mkEmbeddedObjects($args) {
107    
108      $this->log( get_class($this) . "->_mkEmbeddedObjects()", LOG_DEBUG );      $this->log( get_parent_class($this) . "->_mkEmbeddedObjects( parent='" . $args[parent_name] . "' )", PEAR_LOG_INFO );
109        //$this->log( get_parent_class($this) . "->_init_helpers: instantiating helper objects below '" . get_class($this) . "::'" );
110    
111    //print Dumper($args);
112    
113      foreach ($args[class_names] as $classname) {      foreach ($args[class_names] as $classname) {
114                
# Line 60  class DesignPattern_Bridge extends Desig Line 136  class DesignPattern_Bridge extends Desig
136        // helper gets reference to ourselves as a parent        // helper gets reference to ourselves as a parent
137        $this->$objectname->$args[parent_name] = &$this;        $this->$objectname->$args[parent_name] = &$this;
138        
139          $this->_call_initializer($objectname, 'constructor');
140        if ( $method = $args[run] ) {        if ( $method = $args[run] ) {
141          if (method_exists($this->$objectname, $method)) {          $this->_call_initializer($objectname, $method);
           $this->log( get_class($this) . "->_mkEmbeddedObjects: calling method \$this->" . $objectname . "->$method()", LOG_DEBUG );  
           $this->$objectname->$method();  
         }  
142        }        }
143            
144      }      }
145        
146    }    }
147    
148    function _init_logger() {    function _call_initializer($objectname, $method) {
149      // Log      if (method_exists($this->$objectname, $method)) {
150        // valid logging-levels are:        $this->log( get_class($this) . "->_call_initializer: autocalling \$this->" . $objectname . "->$method()" );
151        // LOG_EMERG, LOG_ALERT, LOG_CRIT,        $this->$objectname->$method();
152        // LOG_ERR, LOG_WARNING, LOG_NOTICE, LOG_INFO, and LOG_DEBUG.      }
       // The default is LOG_INFO.  
       $logfile = 'log.txt';  
       $logfile = $this->config[path][base] . "core/var/log/logfile.txt";  
   
       // TODO: maybe include userid here?  
       //$log_ident = substr(session_id(), 10, 6);  
       $log_ident = session_id();  
       if ($this->config[mode][LOG]) {  
         $this->logger = &Log::singleton('file', $logfile, $log_ident);  
         //$site->logger = new Log_file($logfile, $log_ident);  
       } else {  
         $this->logger = &Log::singleton('dummy', $logfile, $log_ident);  
       }  
       $this->log( get_class($this) . "->_init_logger: ready\t\t--------------------", LOG_DEBUG );  
153    }    }
154    
155        
156  }  }
157  ?>  ?>
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