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joko |
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<? |
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// ------------------------------------------------------------------------- |
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joko |
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// $Id: Lift.php,v 1.2 2003/02/27 16:30:17 joko Exp $ |
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joko |
1.1 |
// ------------------------------------------------------------------------- |
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joko |
1.2 |
// $Log: Lift.php,v $ |
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joko |
1.3 |
// 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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joko |
1.2 |
// Revision 1.1 2003/02/22 16:20:04 joko |
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// + initial commit |
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// |
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joko |
1.1 |
// ------------------------------------------------------------------------- |
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joko |
1.3 |
// 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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// |
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// @url: http://cvs.netfrag.org/php/libs/org.netfrag.glib |
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// |
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// TODO: |
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// o refactor Data::Deep to a plugin module |
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// o refactor Data::Encode to a plugin module |
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// o combine Data::Lift and Data::Container somehow |
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// o integrate with Data::Driver somehow -- proposal: |
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// $lift = new Data::Lift($locator); |
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// $lift->perform(); // talks to a Data::Driver |
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// |
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joko |
1.1 |
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class Data_Lift { |
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var $dblocations; |
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var $actor; |
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var $payload; |
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var $vartype; |
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var $metatype; |
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function Data_Lift(&$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 = $options[metatype]; } |
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$this->set(&$payload); |
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} |
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function _init_locations() { |
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$this->actor = array(); |
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$this->dblocations = array( |
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'bla' => 'blub', |
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); |
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} |
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function set(&$payload, $metatype = '') { |
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$this->payload = &$payload; |
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joko |
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if ($metatype) { $this->metatype = $metatype; } |
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$this->_autodetect(); |
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$this->_check(); |
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} |
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function _autodetect() { |
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// FIXME: distinguish between is_array and is_hash here! |
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if (is_object($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 = $parent_class; |
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} |
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} elseif (is_array($this->payload)) { |
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$this->vartype = 'hash'; |
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} else { |
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$this->vartype = 'scalar'; |
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} |
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} |
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function _check() { |
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$good = $this->vartype && $this->metatype; |
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//print "metatype: " . $this->metatype . "<br>"; |
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if (!$good) { |
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print "Data::Lift cannot handle this payload: "; |
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print "(vartype=" . $this->vartype . ", metatype=" . $this->metatype . ")<br/>"; |
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print Dumper($this->payload); |
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joko |
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} |
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joko |
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joko |
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} |
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joko |
1.2 |
function &to($level) { |
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joko |
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$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 $result; |
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} |
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function _resolve_location($level) { |
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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('/', $location); |
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} |
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// try to automagically resolve location |
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$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 = $part; |
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} |
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joko |
1.2 |
function &_perform_actor() { |
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joko |
1.1 |
//$actor_file = join('/', $this->actor) . '.php'; |
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//include($actor_file); |
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$actor_name = 'Data/Lift/' . join('/', $this->actor); |
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$actor_object = mkObject($actor_name); |
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return $actor_object->perform($this->payload); |
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} |
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function get() { |
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return $this->payload; |
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} |
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function add($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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