| 1 |
<? |
| 2 |
// ------------------------------------------------------------------------- |
| 3 |
// $Id: Lift.php,v 1.2 2003/02/27 16:30:17 joko Exp $ |
| 4 |
// ------------------------------------------------------------------------- |
| 5 |
// $Log: Lift.php,v $ |
| 6 |
// Revision 1.2 2003/02/27 16:30:17 joko |
| 7 |
// + enhanced '_autodetect' |
| 8 |
// + added '_check' |
| 9 |
// + now throughout returning lifted values by reference |
| 10 |
// |
| 11 |
// Revision 1.1 2003/02/22 16:20:04 joko |
| 12 |
// + initial commit |
| 13 |
// |
| 14 |
// ------------------------------------------------------------------------- |
| 15 |
|
| 16 |
|
| 17 |
// Data::Lift - Pass data around between various "actors". |
| 18 |
// |
| 19 |
// These "actors" are kinda plugin-modules |
| 20 |
// lying at "locations" and actually mungle the data. |
| 21 |
// |
| 22 |
// "Locations" are by now: |
| 23 |
// x local filesystem |
| 24 |
// o remote anything |
| 25 |
// |
| 26 |
// The "actors" require (by now) to be native php classes |
| 27 |
// having a method "perform". Please have a look at others |
| 28 |
// lying in the Data::Lift namespace at org.netfrag.glib to |
| 29 |
// get a picture of how to implement own "actors". |
| 30 |
// |
| 31 |
// @url: http://cvs.netfrag.org/php/libs/org.netfrag.glib |
| 32 |
// |
| 33 |
// TODO: |
| 34 |
// o refactor Data::Deep to a plugin module |
| 35 |
// o refactor Data::Encode to a plugin module |
| 36 |
// o combine Data::Lift and Data::Container somehow |
| 37 |
// o integrate with Data::Driver somehow -- proposal: |
| 38 |
// $lift = new Data::Lift($locator); |
| 39 |
// $lift->perform(); // talks to a Data::Driver |
| 40 |
// |
| 41 |
|
| 42 |
|
| 43 |
class Data_Lift { |
| 44 |
|
| 45 |
var $dblocations; |
| 46 |
var $actor; |
| 47 |
|
| 48 |
var $payload; |
| 49 |
var $vartype; |
| 50 |
var $metatype; |
| 51 |
|
| 52 |
function Data_Lift(&$payload, $options = array()) { |
| 53 |
$this->_init_locations(); |
| 54 |
//print Dumper($options); |
| 55 |
//exit; |
| 56 |
if ($options[metatype]) { $this->metatype = $options[metatype]; } |
| 57 |
$this->set(&$payload); |
| 58 |
} |
| 59 |
|
| 60 |
function _init_locations() { |
| 61 |
$this->actor = array(); |
| 62 |
$this->dblocations = array( |
| 63 |
'bla' => 'blub', |
| 64 |
); |
| 65 |
} |
| 66 |
|
| 67 |
function set(&$payload, $metatype = '') { |
| 68 |
$this->payload = &$payload; |
| 69 |
|
| 70 |
if ($metatype) { $this->metatype = $metatype; } |
| 71 |
$this->_autodetect(); |
| 72 |
$this->_check(); |
| 73 |
} |
| 74 |
|
| 75 |
function _autodetect() { |
| 76 |
|
| 77 |
// FIXME: distinguish between is_array and is_hash here! |
| 78 |
if (is_object($this->payload)) { |
| 79 |
$this->vartype = 'object'; |
| 80 |
$this->metatype = get_class($this->payload); |
| 81 |
if ($parent_class = get_parent_class($this->payload)) { |
| 82 |
$this->metatype = $parent_class; |
| 83 |
} |
| 84 |
|
| 85 |
} elseif (is_array($this->payload)) { |
| 86 |
$this->vartype = 'hash'; |
| 87 |
|
| 88 |
} else { |
| 89 |
$this->vartype = 'scalar'; |
| 90 |
|
| 91 |
} |
| 92 |
} |
| 93 |
|
| 94 |
function _check() { |
| 95 |
|
| 96 |
$good = $this->vartype && $this->metatype; |
| 97 |
|
| 98 |
//print "metatype: " . $this->metatype . "<br>"; |
| 99 |
|
| 100 |
if (!$good) { |
| 101 |
print "Data::Lift cannot handle this payload: "; |
| 102 |
print "(vartype=" . $this->vartype . ", metatype=" . $this->metatype . ")<br/>"; |
| 103 |
print Dumper($this->payload); |
| 104 |
} |
| 105 |
|
| 106 |
} |
| 107 |
|
| 108 |
function &to($level) { |
| 109 |
$this->_resolve_location($level); |
| 110 |
//print Dumper($this->actor); |
| 111 |
//exit; |
| 112 |
//$result = array( name => 'abc', description => 'def' ); |
| 113 |
$result = &$this->_perform_actor(); |
| 114 |
return $result; |
| 115 |
} |
| 116 |
|
| 117 |
function _resolve_location($level) { |
| 118 |
|
| 119 |
// location can be resolved by location-table |
| 120 |
if ($location = $this->dblocations[$level]) { |
| 121 |
$this->actor = split('/', $location); |
| 122 |
} |
| 123 |
|
| 124 |
// try to automagically resolve location |
| 125 |
$part = array(); |
| 126 |
array_push($part, $this->vartype); |
| 127 |
array_push($part, $this->metatype); |
| 128 |
array_push($part, $level); |
| 129 |
$this->actor = $part; |
| 130 |
|
| 131 |
} |
| 132 |
|
| 133 |
function &_perform_actor() { |
| 134 |
//$actor_file = join('/', $this->actor) . '.php'; |
| 135 |
//include($actor_file); |
| 136 |
$actor_name = 'Data/Lift/' . join('/', $this->actor); |
| 137 |
$actor_object = mkObject($actor_name); |
| 138 |
return $actor_object->perform($this->payload); |
| 139 |
} |
| 140 |
|
| 141 |
function get() { |
| 142 |
return $this->payload; |
| 143 |
} |
| 144 |
|
| 145 |
function add($data = array()) { |
| 146 |
$this->payload = array_merge($this->payload, $data); |
| 147 |
} |
| 148 |
|
| 149 |
} |
| 150 |
|
| 151 |
?> |
Parent Directory
| 
Revision Log
