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<? |
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// --------------------------------------------------------------------------- |
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// $Id: Bridge.php,v 1.5 2003/02/27 18:09:56 joko Exp $ |
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// --------------------------------------------------------------------------- |
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// $Log: Bridge.php,v $ |
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// Revision 1.5 2003/02/27 18:09:56 joko |
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// mungled mechanism to shift in and pass on arguments |
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// |
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// Revision 1.4 2003/02/09 17:07:53 joko |
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// + minor update related to new log level constants |
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// + generic argument merger to show full constructor args |
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// |
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// Revision 1.3 2003/02/03 14:46:57 joko |
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// + wrapped calls to available initializers (constructors, declared startup methods) |
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// - moved logger-code to DesignPattern::Logger |
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// |
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// Revision 1.2 2003/02/03 05:01:27 joko |
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// + now attributes can get passed in to the constructors |
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// |
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// Revision 1.1 2003/02/03 03:33:48 joko |
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// + initial commit |
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// |
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// --------------------------------------------------------------------------- |
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|
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|
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class DesignPattern_Bridge extends DesignPattern_Logger { |
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|
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function DesignPattern_Bridge() { |
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|
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$arg_list = func_get_args(); |
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$classname = array_shift($arg_list); |
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|
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// expand single argument |
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if (count($arg_list) == 1) { |
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$arg_list = $arg_list[0]; |
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} |
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$attributes = &$arg_list; |
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|
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//print Dumper($attributes); |
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|
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//print "init_bridge!<br>"; |
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//return $this->_mkInstance($classname, $attributes); |
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//$this->_init_logger("../core/var/log/logfile.txt", 1); |
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//parent::constructor(); |
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$this = $this->_mkInstance($classname, $attributes); |
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//parent::constructor(); |
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// $this->_init_logger("../core/var/log/logfile.txt", 1); |
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//print Dumper($this); |
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//parent::DesignPattern_Logger(); |
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//return $this; |
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} |
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|
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function &_mkInstance($classname, $attributes = null) { |
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parent::constructor(); |
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$this->log( get_class($this) . "->_mkInstance( classname $classname )" ); |
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if (isset($attributes)) { |
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//print Dumper($attributes); |
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|
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/* |
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// pass single argument 1:1 |
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if (count($attributes) == 1) { |
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$attributes_merged = $attributes[0]; |
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|
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|
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|
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// pass hash 1:1 |
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} elseif (is_hash($attributes)) { |
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$attributes_merged = $attributes; |
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|
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} else { |
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$attributes_merged = $attributes; |
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} |
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*/ |
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|
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$args_pass = array(); |
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for ($i=0; $i<=count($attributes); $i++) { |
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array_push($args_pass, '$attributes[' . $i . ']'); |
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} |
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|
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$arg_string = join(', ', $args_pass); |
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|
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/* |
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// merge entries of numerical indexed arrays together into one hash |
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} else { |
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$attributes_merged = array(); |
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foreach ($attributes as $entry) { |
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$attributes_merged = array_merge($attributes_merged, $entry); |
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} |
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} |
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*/ |
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|
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//print Dumper($attributes_merged); |
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//print Dumper($attributes); |
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//$instance = new $classname($attributes_merged); |
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//$instance = new $classname($attributes[0]); |
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$evalstr = 'return new $classname(' . $arg_string . ');'; |
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$instance = eval($evalstr); |
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//print $evalstr . "<br>"; |
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} else { |
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$instance = new $classname; |
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} |
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//$this->log("ok"); |
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return $instance; |
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} |
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|
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function _mkEmbeddedObjects($args) { |
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|
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$this->log( get_parent_class($this) . "->_mkEmbeddedObjects( parent='" . $args[parent_name] . "' )", PEAR_LOG_INFO ); |
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//$this->log( get_parent_class($this) . "->_init_helpers: instantiating helper objects below '" . get_class($this) . "::'" ); |
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|
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//print Dumper($args); |
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|
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foreach ($args[class_names] as $classname) { |
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|
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// build objectname from classname |
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// - make lowercase |
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// - strip leading "Xyz_" ('Site_' here) |
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$objectname = $classname; |
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$objectname = str_replace('Site_', '', $objectname); |
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$objectname = strtolower($objectname); |
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|
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// create new instance of helper object by classname |
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$this->$objectname = &$this->_mkInstance($classname); |
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|
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// create additional references to helper object with other names if requested |
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// the intention is (e.g.) to migrate objects over to new reference-names when development progresses and ... |
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// ... refactoring the object hierarchy is needed, but ... |
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// ... you wanna provide the old reference names as "fallbacks" for old code using the libs |
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if (is_array($args[ref_names])) { |
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foreach ($args[ref_names] as $ref_name) { |
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//print "mkRef: $ref_name<br>"; |
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$this->$ref_name = &$this->$objectname; |
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} |
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} |
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|
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// helper gets reference to ourselves as a parent |
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$this->$objectname->$args[parent_name] = &$this; |
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|
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$this->_call_initializer($objectname, 'constructor'); |
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if ( $method = $args[run] ) { |
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$this->_call_initializer($objectname, $method); |
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} |
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|
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} |
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|
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} |
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|
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function _call_initializer($objectname, $method) { |
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if (method_exists($this->$objectname, $method)) { |
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$this->log( get_class($this) . "->_call_initializer: autocalling \$this->" . $objectname . "->$method()" ); |
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$this->$objectname->$method(); |
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} |
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} |
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|
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|
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} |
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?> |
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