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<? |
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/** |
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* This file contains the Data::Lift component. |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @package org.netfrag.glib |
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* @name Data::Lift |
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* |
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*/ |
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|
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// ------------------------------------------------------------------------- |
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// $Id: Lift.php,v 1.7 2003/04/18 15:48:00 joko Exp $ |
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// ------------------------------------------------------------------------- |
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// $Log: Lift.php,v $ |
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// Revision 1.7 2003/04/18 15:48:00 joko |
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// better error handling: a) croak messages, b) just perform lift module if instance could be created |
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// |
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// Revision 1.6 2003/03/09 15:49:20 joko |
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// fix towards optimizing autodocumentation: |
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// enriched with metadata to tell autodia how to build object-relationships by discarding the fancy namespacing stuff there |
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// |
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// Revision 1.5 2003/03/08 20:04:59 root |
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// + optimized comments for Autodia |
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// |
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// Revision 1.4 2003/03/08 18:22:23 joko |
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// updated comments: now in phpDocumentor style |
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// |
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// Revision 1.3 2003/03/03 21:28:11 joko |
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// updated comments |
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// |
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// Revision 1.2 2003/02/27 16:30:17 joko |
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// + enhanced '_autodetect' |
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// + added '_check' |
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// + now throughout returning lifted values by reference |
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// |
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// Revision 1.1 2003/02/22 16:20:04 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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* --- Data::Lift |
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* |
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* <pre> |
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* Data::Lift - Pass data around between various "actors". |
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* |
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* These "actors" are kinda plugin-modules |
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* lying at "locations" and actually mungle the data. |
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* |
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* "Locations" are by now: |
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* x local filesystem |
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* o remote anything |
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* |
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* The "actors" require (by now) to be native php classes |
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* having a method "perform". Please have a look at others |
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* lying in the Data::Lift namespace at org.netfrag.glib to |
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* get a picture of how to implement own "actors". |
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* </pre> |
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* |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @copyright (c) 2003 - All Rights reserved. |
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* @license GNU LGPL (GNU Lesser General Public License) |
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* |
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* @link http://www.netfrag.org/~joko/ |
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* @link http://www.gnu.org/licenses/lgpl.txt |
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* |
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* @package org.netfrag.glib |
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* @subpackage DataLift |
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* @name Data::Lift |
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* |
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* @link http://cvs.netfrag.org/php/libs/org.netfrag.glib |
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* |
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* |
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* @todo refactor Data::Deep to a plugin module |
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* @todo refactor Data::Encode to a plugin module |
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* @todo combine Data::Lift and Data::Container somehow |
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* @todo integrate with Data::Driver somehow -- proposal: |
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* // $lift = ne w Data::Lift($locator); |
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* // $lift->perform(); // talks to a Data::Driver |
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* |
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* |
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*/ |
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class Data_Lift { |
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|
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/** |
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* this is to trick Autodia let understanding "namespaces" in php |
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* unless the pattern can be tweaked by mode (namespace=0|1) |
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* // $this = ne w Data::Lift(&$payload, $options = array()); |
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*/ |
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|
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var $dblocations; |
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var $actor; |
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var $actor_instance; |
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|
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var $payload; |
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var $vartype; |
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var $metatype; |
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var $_link_args = NULL; |
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|
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function Data_Lift(&$payload, $options = array()) { |
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$this->_init_locations(); |
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//print Dumper($options); |
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//exit; |
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if ($options[metatype]) { $this->metatype = $options[metatype]; } |
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if ($options[link_args]) { $this->_link_args = $options[link_args]; } |
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$this->set(&$payload); |
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} |
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|
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function _init_locations() { |
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$this->actor = array(); |
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$this->dblocations = array( |
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'bla' => 'blub', |
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); |
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} |
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|
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function set(&$payload, $metatype = '') { |
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$this->payload = &$payload; |
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|
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if ($metatype) { $this->metatype = $metatype; } |
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$this->_autodetect(); |
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$this->_check(); |
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} |
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|
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function _autodetect() { |
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|
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// FIXME: distinguish between is_array and is_hash here! |
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if (is_object($this->payload)) { |
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$this->vartype = 'object'; |
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$this->metatype = get_class($this->payload); |
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if ($parent_class = get_parent_class($this->payload)) { |
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$this->metatype = $parent_class; |
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} |
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|
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} elseif (is_array($this->payload)) { |
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$this->vartype = 'hash'; |
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|
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} else { |
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$this->vartype = 'scalar'; |
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|
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} |
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} |
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|
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function _check() { |
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|
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$good = $this->vartype && $this->metatype; |
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|
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//print "metatype: " . $this->metatype . "<br>"; |
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|
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if (!$good) { |
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$msg = "Data::Lift cannot handle this payload: "; |
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$msg .= "[vartype=" . $this->vartype . ", metatype=" . $this->metatype . "]<br/>"; |
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$msg .= "payload: '" . Dumper($this->payload) . "'"; |
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user_error($msg); |
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} |
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|
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} |
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|
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function &to($level) { |
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$this->_resolve_location($level); |
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//print Dumper($this->actor); |
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//exit; |
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//$result = array( name => 'abc', description => 'def' ); |
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$result = &$this->_perform_actor(); |
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return $result; |
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} |
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|
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function _resolve_location($level) { |
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|
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// location can be resolved by location-table |
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if ($location = $this->dblocations[$level]) { |
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$this->actor = split('/', $location); |
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} |
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|
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// try to automagically resolve location |
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$part = array(); |
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array_push($part, $this->vartype); |
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array_push($part, $this->metatype); |
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array_push($part, $level); |
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$this->actor = $part; |
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|
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} |
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|
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function &_perform_actor() { |
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//$actor_file = join('/', $this->actor) . '.php'; |
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//include($actor_file); |
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|
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/** |
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* <!-- Autodia --> |
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* can do: (this is metadata supplied for Autodia, don't delete!) |
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* $this->_actor_instance = new Data_Lift_hash_job_html() |
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* $this->_actor_instance = new Data_Lift_hash_tree_PEAR_Tree() |
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* $this->_actor_instance = new Data_Lift_object_tree_common_PEAR_HTML_TreeMenu() |
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* $this->_actor_instance = new Data_Lift_object_tree_common_PEAR_HTML_TreeMenu_DHTML() |
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* $this->_actor_instance = new Data_Lift_object_tree_common_PEAR_HTML_TreeMenu_Listbox() |
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* |
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*/ |
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|
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$actor_name = 'Data/Lift/' . join('/', $this->actor); |
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//$actor_name = 'Data::Lift::' . join('::', $this->actor); |
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|
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//$actor_object = mkObject($actor_name); |
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//return $actor_object->perform($this->payload); |
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|
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// fix [2003-04-13]: just perform if instance good |
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//if ($actor_object = php::mkComponent($actor_name)) { |
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$actor_object = mkObject($actor_name); |
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if (is_object($actor_object) && method_exists($actor_object, 'perform')) { |
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if($actor_name == "Data/Lift/hash/topic/ExplorerTree") { |
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return $actor_object->perform($this->payload, $this->_link_args); |
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} else { |
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return $actor_object->perform($this->payload); |
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} |
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} else { |
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user_error("Data::Lift could not call method 'perform' on actor object. [actor_name='$actor_name']"); |
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//return array(); |
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} |
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|
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} |
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|
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function get() { |
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return $this->payload; |
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} |
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|
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function add($data = array()) { |
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$this->payload = array_merge($this->payload, $data); |
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} |
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|
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} |
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|
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?> |
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