| 1 |
<? |
| 2 |
|
| 3 |
// ============================================================== |
| 4 |
class DSAbstractObject { |
| 5 |
|
| 6 |
// the type of this object |
| 7 |
var $type; |
| 8 |
|
| 9 |
// the name of the object-key |
| 10 |
var $objectkey_name; |
| 11 |
|
| 12 |
// the (virtual) attributes |
| 13 |
var $attributes; |
| 14 |
|
| 15 |
// references to other/new objects |
| 16 |
// a reference to a "DSSession"-object which will be passed in "from outside" by the "DSEngine" |
| 17 |
var $ref_session; |
| 18 |
// a "DataQuery"-object instantiated in the constructor later |
| 19 |
var $ref_dataquery; |
| 20 |
// a reference to a "PDLModelObject"-object, which will be initialized in the constructor from "$ref_session" |
| 21 |
var $ref_pdlModelObject; |
| 22 |
// a reference to a list (array) of "PDLModelObject"-attributes ("PDLModelObjectAttribute"s) |
| 23 |
var $ref_pdlModelObjectAttributes; |
| 24 |
|
| 25 |
// miscellanious other variables |
| 26 |
|
| 27 |
// some state-information |
| 28 |
var $bool_unbound; // no binding to database yet |
| 29 |
var $bool_created; // created for being a new object |
| 30 |
|
| 31 |
var $pdlEventName; |
| 32 |
var $pdlEventName_CurrentObjectOperation; |
| 33 |
var $dsType; |
| 34 |
|
| 35 |
// metainfo about this object |
| 36 |
//var $metainfo; |
| 37 |
|
| 38 |
// --------------------------------------------------------------------------------------- |
| 39 |
function DSAbstractObject($type, $eventIdentifier, &$ref_session) { |
| 40 |
|
| 41 |
// initialize most important information for an object :-) |
| 42 |
$this->type = $type; |
| 43 |
$this->ref_session =& $ref_session; |
| 44 |
$this->ref_pdlModelObject =& $this->ref_session->pdlengine->getPDLObject($type); |
| 45 |
$this->ref_pdlModelObjectAttributes =& $this->ref_pdlModelObject->attributes; |
| 46 |
$this->objectkey_name = $this->ref_pdlModelObject->objectkey; |
| 47 |
|
| 48 |
$this->_initAttributes(); |
| 49 |
|
| 50 |
// initialize object-state (-> "this is a new object") |
| 51 |
$this->bool_unbound = 1; |
| 52 |
$this->bool_created = 1; |
| 53 |
|
| 54 |
$this->pdlEventName = 'retrieve ' . $eventIdentifier; |
| 55 |
$this->pdlEventName_CurrentObjectOperation = ''; |
| 56 |
if ($eventIdentifier == 'all') { |
| 57 |
$this->dsType = 'DSDataCollection'; |
| 58 |
} else { |
| 59 |
$this->dsType = 'DSDataObject'; |
| 60 |
} |
| 61 |
|
| 62 |
// create a new "DataQuery"-object and store reference |
| 63 |
$this->ref_dataquery =& new DataQuery(); |
| 64 |
|
| 65 |
} |
| 66 |
|
| 67 |
|
| 68 |
|
| 69 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 70 |
// PROTOTYPES? |
| 71 |
// TODO: silly idea with the prototypes in here, in fact most of these are |
| 72 |
// very specialized methods of "DSDataObject" which have nothing lost in "DSDataCollection" |
| 73 |
|
| 74 |
// attribute-operations |
| 75 |
//function get() { } |
| 76 |
//function set() { } |
| 77 |
|
| 78 |
// object-key-operations |
| 79 |
function getObjectKeyName() { return $this->_getObjectKeyName(); } |
| 80 |
function getObjectKey() { return $this->_getObjectKey(); } |
| 81 |
function setObjectKey($value) { return $this->_setObjectKey($value); } |
| 82 |
function hasObjectKey() { return $this->_hasObjectKey(); } |
| 83 |
|
| 84 |
// object-operations |
| 85 |
//function load() { } |
| 86 |
//function save() { } |
| 87 |
//function delete() { } |
| 88 |
function fill($attributes_new) { $this->_fill($attributes_new); } |
| 89 |
function reset() { $this->_reset(); } |
| 90 |
function unbind() { $this->_unbind(); } |
| 91 |
|
| 92 |
|
| 93 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 94 |
// ATTRIBUTE-OPERATIONS (get/set) |
| 95 |
|
| 96 |
// --------------------------------------------------------------------------------------- |
| 97 |
function _getAttribute($attribute_name) { |
| 98 |
if (isset($this->attributes[$attribute_name])) { |
| 99 |
$value = $this->attributes[$attribute_name]; |
| 100 |
|
| 101 |
if (isset($this->ref_pdlModelObjectAttributes)) { |
| 102 |
switch ($this->ref_pdlModelObjectAttributes[$attribute_name]->type) { |
| 103 |
case 'Date': |
| 104 |
// modify date from english/american format to german one |
| 105 |
//$value = join('-', array_reverse( split('.', $value) )); |
| 106 |
$value = convertDate($value, 'german'); |
| 107 |
break; |
| 108 |
} |
| 109 |
} |
| 110 |
|
| 111 |
return $value; |
| 112 |
} |
| 113 |
} |
| 114 |
|
| 115 |
function _setAttribute($attribute_name, $value) { |
| 116 |
|
| 117 |
if (isset($this->ref_pdlModelObjectAttributes)) { |
| 118 |
switch ($this->ref_pdlModelObjectAttributes[$attribute_name]->type) { |
| 119 |
case 'Date': |
| 120 |
// modify date from english/american format to german one |
| 121 |
//$value = join('-', array_reverse( split('.', $value) )); |
| 122 |
$value = convertDate($value, 'english'); |
| 123 |
break; |
| 124 |
} |
| 125 |
} |
| 126 |
|
| 127 |
$this->attributes[$attribute_name] = $value; |
| 128 |
} |
| 129 |
|
| 130 |
function _existsAttribute($attribute_name) { |
| 131 |
return isset($this->attributes[$attribute_name]); |
| 132 |
} |
| 133 |
|
| 134 |
// --------------------------------------------------------------------------------------- |
| 135 |
function _initAttributes() { |
| 136 |
$attribute_names = array_keys($this->ref_pdlModelObjectAttributes); |
| 137 |
$this->attributes = createHash($attribute_names); |
| 138 |
} |
| 139 |
|
| 140 |
// --------------------------------------------------------------------------------------- |
| 141 |
function _checkAttributeAccess($attribute_name, $access_mode) { |
| 142 |
|
| 143 |
/* |
| 144 |
remarks for attribute-access-checking: is the following mechanism okay? |
| 145 |
- always (maybe first): check for attribute-existance |
| 146 |
- read-mode: |
| 147 |
- if the object is new (objectkey == '<new>'), return no value |
| 148 |
- write-mode: |
| 149 |
- if the object has no object-key: continue work |
| 150 |
- if the object has got one or more object-key(s): |
| 151 |
- if the object is bound: continue work |
| 152 |
- if the object is not bound: check if all object-keys are set first before accessing other attributes |
| 153 |
*/ |
| 154 |
|
| 155 |
if (!$this->_existsAttribute($attribute_name)) { |
| 156 |
print "<font color=\"red\">Could not access attribute \"$attribute_name\" (operation: \"$access_mode\") in object \"{$this->type}\". Attribute does not exist.</font><br>"; |
| 157 |
return 0; |
| 158 |
} |
| 159 |
|
| 160 |
|
| 161 |
switch ($access_mode) { |
| 162 |
|
| 163 |
// - - - - - - - - - - - - |
| 164 |
case 'read': |
| 165 |
// is this a new object? |
| 166 |
if ( $this->getObjectKey() == '<new>' ) { |
| 167 |
//return $this->_getAttribute($attribute_name); |
| 168 |
return 0; |
| 169 |
} |
| 170 |
break; |
| 171 |
|
| 172 |
// - - - - - - - - - - - - |
| 173 |
case 'write': |
| 174 |
// if this object is unbound, just allow access to the object-key(s) |
| 175 |
// this is needed to load a single object in order to set the object-id for loading |
| 176 |
|
| 177 |
// check for object-key |
| 178 |
if ($this->objectkey_name) { |
| 179 |
if ($this->bool_unbound) { |
| 180 |
if ($attribute_name != $this->objectkey_name) { |
| 181 |
print "<font color=\"red\">Could not access attribute \"$attribute_name\" for setting in object-type \"{$this->type}\", because the object is unbound, not new, "; |
| 182 |
print "and \"$attribute_name\" is not the object-key.</font><br>"; |
| 183 |
return 0; |
| 184 |
} |
| 185 |
} |
| 186 |
} else { |
| 187 |
// object has got no object-key: continue work |
| 188 |
} |
| 189 |
|
| 190 |
break; |
| 191 |
} |
| 192 |
|
| 193 |
return 1; |
| 194 |
} |
| 195 |
|
| 196 |
|
| 197 |
|
| 198 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 199 |
// OBJECT-KEY-OPERATIONS |
| 200 |
|
| 201 |
// --------------------------------------------------------------------------------------- |
| 202 |
// returns the attribute-name of the object-key |
| 203 |
function _getObjectKeyName() { |
| 204 |
// get name of key |
| 205 |
return $this->objectkey_name; |
| 206 |
} |
| 207 |
|
| 208 |
// --------------------------------------------------------------------------------------- |
| 209 |
// returns the attribute-value of the object-key |
| 210 |
function _getObjectKey() { |
| 211 |
|
| 212 |
// get value of key |
| 213 |
$objectkey = $this->_getAttribute($this->objectkey_name); |
| 214 |
|
| 215 |
if ($objectkey) { |
| 216 |
return $objectkey; |
| 217 |
} else { |
| 218 |
// HACK: !? |
| 219 |
//return "<new>"; |
| 220 |
return "<undefined>"; |
| 221 |
} |
| 222 |
} |
| 223 |
|
| 224 |
// --------------------------------------------------------------------------------------- |
| 225 |
// sets the attribute-value of the object-key |
| 226 |
function _setObjectKey($value) { |
| 227 |
// set value of key |
| 228 |
$this->_setAttribute($this->objectkey_name, $value); |
| 229 |
} |
| 230 |
|
| 231 |
// --------------------------------------------------------------------------------------- |
| 232 |
// has this object an object-key? |
| 233 |
function _hasObjectKey() { |
| 234 |
if ($this->objectkey_name) { return 1; } |
| 235 |
} |
| 236 |
|
| 237 |
|
| 238 |
|
| 239 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 240 |
// OBJECT-OPERATIONS (load/save/delete/reset/fill) |
| 241 |
|
| 242 |
// --------------------------------------------------------------------------------------- |
| 243 |
function _setupDataQuery($eventname) { |
| 244 |
|
| 245 |
if (!$eventname) { |
| 246 |
print "<font color=\"red\">Could not initiate any action on object \"{$this->type}\", because the eventname specified was empty. This is needed for getting the proper metadata to execute the object-operation.</font><br>"; |
| 247 |
return; |
| 248 |
} |
| 249 |
|
| 250 |
// set class-variables |
| 251 |
$this->pdlEventName_CurrentObjectOperation = $eventname; |
| 252 |
|
| 253 |
// get pdl for current event from "PDLModelObject" |
| 254 |
if (!isset($this->ref_pdlModelObject->events[$eventname])) { |
| 255 |
trigger_error("DSDataObject->_validateOperation_Object(): Could not find PDLModelEvent \"$eventname\" for object-type \"$this->type\"", E_USER_ERROR); |
| 256 |
} |
| 257 |
$unreadySql = $this->ref_pdlModelObject->events[$eventname]->get_unreadySql(); |
| 258 |
|
| 259 |
// initialize "DataQuery"s map-part with mapping-informations |
| 260 |
$this->ref_dataquery->setMap($this->ref_pdlModelObjectAttributes); |
| 261 |
|
| 262 |
// initialize "DataQuery"s sql-part with the "unready" sql-statement |
| 263 |
$this->ref_dataquery->setQuery($unreadySql); |
| 264 |
|
| 265 |
return 1; |
| 266 |
|
| 267 |
} |
| 268 |
|
| 269 |
// --------------------------------------------------------------------------------------- |
| 270 |
function _validateOperation_Object($operation_mode) { |
| 271 |
|
| 272 |
// first, distinguish between "DSDataObject" and "DSDataCollection" |
| 273 |
switch($this->dsType) { |
| 274 |
case 'DSDataObject': |
| 275 |
if (!$this->hasObjectKey()) { |
| 276 |
// TODO: CHECK THIS!!! |
| 277 |
//print "<font color=\"red\">Could not initiate object-operation \"$operation_mode\" on object \"{$this->type}\", because \"{$this->type}\" seems to have no object-key.</font><br>"; |
| 278 |
//return; |
| 279 |
} |
| 280 |
break; |
| 281 |
case 'DSDataCollection': |
| 282 |
break; |
| 283 |
} |
| 284 |
|
| 285 |
return 1; |
| 286 |
|
| 287 |
} |
| 288 |
|
| 289 |
// --------------------------------------------------------------------------------------- |
| 290 |
function _validateOperation_Attributes($operation_mode) { |
| 291 |
|
| 292 |
/* |
| 293 |
object-key-juggling, we must handle a few things: |
| 294 |
- does this object has got object-keys or not? |
| 295 |
- and if it has - are they valid and stuff? |
| 296 |
*/ |
| 297 |
|
| 298 |
switch($operation_mode) { |
| 299 |
|
| 300 |
// - - - - - - - - - - - - |
| 301 |
case 'load': |
| 302 |
if ($this->hasObjectKey()) { |
| 303 |
$objectkey = $this->getObjectKey(); |
| 304 |
// define here what shall happen if an object with key "<undefined>" gets a load-request |
| 305 |
if ($objectkey == '<undefined>') { |
| 306 |
print "<font color=\"red\">Could not load object with object-type \"{$this->type}\", because the object-key \"{$this->objectkey_name}\" was \"undefined\".</font><br>"; |
| 307 |
return; |
| 308 |
} |
| 309 |
// define here what shall happen if an object with key "<new>" gets a load-request |
| 310 |
if ($objectkey == '<new>') { |
| 311 |
print "<font color=\"red\">Could not load object with object-type \"{$this->type}\", because the object-key \"{$this->objectkey_name}\" was \"new\".</font><br>"; |
| 312 |
return; |
| 313 |
} |
| 314 |
} |
| 315 |
break; |
| 316 |
|
| 317 |
// - - - - - - - - - - - - |
| 318 |
case 'save': |
| 319 |
|
| 320 |
if ($this->hasObjectKey()) { |
| 321 |
$objectkey = $this->getObjectKey(); |
| 322 |
// define here what shall happen if an object with key "<undefined>" gets a save-request |
| 323 |
if ($objectkey == '<undefined>') { |
| 324 |
print "<font color=\"red\">Could not save object with object-type \"{$this->type}\", because the object-key \"{$this->objectkey_name}\" was \"undefined\".</font><br>"; |
| 325 |
return; |
| 326 |
} |
| 327 |
// define here what shall happen if an object with key "<new>" gets a save-request |
| 328 |
if ($objectkey == '<new>') { |
| 329 |
//print "<font color=\"red\">Could not save object with object-type \"{$this->type}\", because the object-key \"{$this->objectkey_name}\" was \"new\".</font><br>"; |
| 330 |
//return; |
| 331 |
// overwrite the value of the objectkey-attribute |
| 332 |
$this->setObjectKey('null'); |
| 333 |
} |
| 334 |
} |
| 335 |
|
| 336 |
break; |
| 337 |
|
| 338 |
} |
| 339 |
|
| 340 |
return 1; |
| 341 |
|
| 342 |
} |
| 343 |
|
| 344 |
|
| 345 |
// --------------------------------------------------------------------------------------- |
| 346 |
function _load_startup() { |
| 347 |
|
| 348 |
// if this object is already bound, we will skip loading it again |
| 349 |
// TODO: if not "bool_dirty" |
| 350 |
if (!$this->bool_unbound) { return; } |
| 351 |
|
| 352 |
// set object-state |
| 353 |
$this->bool_unbound = 0; |
| 354 |
$this->bool_created = 0; |
| 355 |
|
| 356 |
$bool_operation_ok = ( ($this->_validateOperation_Object('load')) && ($this->_setupDataQuery($this->pdlEventName)) ); |
| 357 |
return $bool_operation_ok; |
| 358 |
|
| 359 |
} |
| 360 |
|
| 361 |
// --------------------------------------------------------------------------------------- |
| 362 |
function _save_startup() { |
| 363 |
|
| 364 |
//print "save: " . "bu: " . $this->bool_unbound . "; " . "bc: " . $this->bool_created . "\n"; |
| 365 |
|
| 366 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 367 |
// determine pdl-event |
| 368 |
$eventname = ''; |
| 369 |
// actual insert |
| 370 |
if ($this->bool_unbound && $this->bool_created) { |
| 371 |
$eventname = 'add'; |
| 372 |
} |
| 373 |
// actual update |
| 374 |
if (!$this->bool_unbound && !$this->bool_created) { |
| 375 |
$eventname = 'update'; |
| 376 |
} |
| 377 |
|
| 378 |
// if this object is already bound, we will skip loading it again |
| 379 |
// TODO: if not "bool_dirty" |
| 380 |
//if (!$this->bool_unbound) { return; } |
| 381 |
|
| 382 |
// set object-state |
| 383 |
//$this->bool_unbound = 0; |
| 384 |
//$this->bool_created = 0; |
| 385 |
|
| 386 |
$bool_operation_ok = ( ($this->_validateOperation_Object('save')) && ($this->_setupDataQuery($eventname)) ); |
| 387 |
return $bool_operation_ok; |
| 388 |
|
| 389 |
} |
| 390 |
|
| 391 |
// --------------------------------------------------------------------------------------- |
| 392 |
function _delete_startup() { |
| 393 |
$eventname = 'remove'; |
| 394 |
$bool_operation_ok = ( ($this->_validateOperation_Object('delete')) && ($this->_setupDataQuery($eventname)) ); |
| 395 |
return $bool_operation_ok; |
| 396 |
} |
| 397 |
|
| 398 |
// --------------------------------------------------------------------------------------- |
| 399 |
function _fill($attributes_new) { |
| 400 |
|
| 401 |
// save all attribute-names in case the new ones are incomplete |
| 402 |
$attribute_names = array_keys($this->attributes); |
| 403 |
|
| 404 |
// overwrite original attributes with new ones |
| 405 |
$this->attributes = array_merge(createHash($attribute_names), $attributes_new); |
| 406 |
|
| 407 |
// set object-state |
| 408 |
if ($this->hasObjectKey()) { |
| 409 |
switch($this->getObjectKey()) { |
| 410 |
case '<undefined>': |
| 411 |
break; |
| 412 |
case '<new>': |
| 413 |
break; |
| 414 |
case '': |
| 415 |
break; |
| 416 |
// yeah, the object-key is set to a valid value, so we declare this object as "bound" |
| 417 |
default: |
| 418 |
$this->bool_unbound = 0; |
| 419 |
//print "-------------fill<br>"; |
| 420 |
//$this->_load_startup(); |
| 421 |
//$this->_setupDataQuery($this->pdlEventName); |
| 422 |
//print ".-...............pdl: " . $this->pdlEventName; |
| 423 |
//$this->filters = array(); |
| 424 |
//$this->ref_dataquery->clearCriterias(); |
| 425 |
//$this->reset(); |
| 426 |
break; |
| 427 |
} |
| 428 |
} |
| 429 |
|
| 430 |
} |
| 431 |
|
| 432 |
// --------------------------------------------------------------------------------------- |
| 433 |
// declares this object as "unbound" (not loaded) |
| 434 |
function _unbind() { |
| 435 |
$this->bool_unbound = 1; |
| 436 |
} |
| 437 |
|
| 438 |
// --------------------------------------------------------------------------------------- |
| 439 |
// declares this object as "unbound" (not loaded) |
| 440 |
function _reset() { |
| 441 |
$this->_unbind(); |
| 442 |
} |
| 443 |
|
| 444 |
} |
| 445 |
|
| 446 |
|
| 447 |
|
| 448 |
|
| 449 |
|
| 450 |
// ============================================================== |
| 451 |
class DSDataObject extends DSAbstractObject { |
| 452 |
|
| 453 |
|
| 454 |
// --------------------------------------------------------------------------------------- |
| 455 |
function DSDataObject($type, &$ref_session) { |
| 456 |
// debugging |
| 457 |
slog("DSDataObject: new DSDataObject($type)"); |
| 458 |
parent::DSAbstractObject($type, 'single', &$ref_session); |
| 459 |
} |
| 460 |
|
| 461 |
|
| 462 |
|
| 463 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 464 |
// ATTRIBUTE-OPERATIONS (get/set) |
| 465 |
|
| 466 |
|
| 467 |
// --------------------------------------------------------------------------------------- |
| 468 |
function get($attribute_name) { |
| 469 |
|
| 470 |
// debugging |
| 471 |
slog("DSDataObject: get($attribute_name)"); |
| 472 |
|
| 473 |
// attribute-access!? |
| 474 |
if (!$this->_checkAttributeAccess($attribute_name, 'read')) { return; } |
| 475 |
|
| 476 |
// is this object unbound? if yes, try an implicit load! |
| 477 |
if ( ($this->bool_unbound) && ($this->hasObjectKey()) ) { |
| 478 |
// we have to pre-check here if the object we want to load implicitely has got an object key - else this wouldn't make sense ... |
| 479 |
// ... the reason for this case is maybe because "DSDataCollection" did a "fill" on a "DSDataObject" so this object is "unbound", too |
| 480 |
// the normal case is that a "DSDataObject" is "unbound", so it will get an implicit "load"-request when it recieved an attribute-"get"-request here |
| 481 |
// the "forbidden" load of an object without object-key is also checked later in "->_validateOperation_Object()", |
| 482 |
// but there the operation is cancelled with an error, here we can prevent this :-) |
| 483 |
$this->load(); |
| 484 |
} |
| 485 |
|
| 486 |
// TODO: other DataCollections ( for "Associations"-functionality :-) ) |
| 487 |
|
| 488 |
// TODO/HACK: this comparison doesn't ensure completely if an attribute-value is set or not ( imagine "0" (zero)!!! ) |
| 489 |
if ( $retval = $this->_getAttribute($attribute_name) ) { |
| 490 |
return $retval; |
| 491 |
} |
| 492 |
|
| 493 |
} |
| 494 |
|
| 495 |
|
| 496 |
// --------------------------------------------------------------------------------------- |
| 497 |
function set($attribute_name, $value) { |
| 498 |
|
| 499 |
// attribute-access!? |
| 500 |
if (!$this->_checkAttributeAccess($attribute_name, 'write')) { return; } |
| 501 |
|
| 502 |
slog("DSDataObject: set($attribute_name, $value)"); |
| 503 |
// TODO (MUST): other DataCollections |
| 504 |
|
| 505 |
$this->_setAttribute($attribute_name, $value); |
| 506 |
} |
| 507 |
|
| 508 |
// --------------------------------------------------------------------------------------- |
| 509 |
function getAll_old() { |
| 510 |
slog("DSDataObject: getAll()"); |
| 511 |
return $this->attributes; |
| 512 |
} |
| 513 |
|
| 514 |
function setAll_old($attributes) { |
| 515 |
slog("DSDataObject: setAll($attributes)"); |
| 516 |
$this->attributes = $attributes; |
| 517 |
} |
| 518 |
|
| 519 |
|
| 520 |
|
| 521 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 522 |
// OBJECT-OPERATIONS (load/save/delete/reset/fill) |
| 523 |
|
| 524 |
|
| 525 |
// --------------------------------------------------------------------------------------- |
| 526 |
function load() { |
| 527 |
|
| 528 |
if (!$this->_load_startup()) { return; } |
| 529 |
|
| 530 |
// validate attributes to assure a good object-operation |
| 531 |
if (!$this->_validateOperation_Attributes('load')) { |
| 532 |
print "<font color=\"red\">DSDataObject->_validateOperation_Attributes('load') for \"{$this->type}\" failed.</font><br>"; |
| 533 |
} |
| 534 |
|
| 535 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 536 |
// add criteria-information to the "DataQuery" to limit the result to this single object/entry |
| 537 |
// HACK!!! move this functionality (':') to "...->addCriteria?) |
| 538 |
$this->ref_dataquery->addCriteria(':' . $this->objectkey_name . ' = ' . $this->getObjectKey()); |
| 539 |
|
| 540 |
|
| 541 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 542 |
// retrieve data |
| 543 |
|
| 544 |
// execute the "DataQuery" |
| 545 |
$this->ref_dataquery->query(); |
| 546 |
|
| 547 |
// get next (first) item of result(s) |
| 548 |
if ($this->ref_dataquery->next()) { |
| 549 |
|
| 550 |
// initialize attributes with loaded values |
| 551 |
$attributes_loaded =& $this->ref_dataquery->getResult(); |
| 552 |
|
| 553 |
// fill ourself with attributes |
| 554 |
$this->fill($attributes_loaded); |
| 555 |
|
| 556 |
return 1; |
| 557 |
} |
| 558 |
|
| 559 |
} |
| 560 |
|
| 561 |
|
| 562 |
// --------------------------------------------------------------------------------------- |
| 563 |
function save() { |
| 564 |
|
| 565 |
if (!$this->_save_startup()) { return; } |
| 566 |
|
| 567 |
// catch all vars to save this object |
| 568 |
$this->save_catchAllVars(); |
| 569 |
|
| 570 |
// validate attributes to assure a good object-operation |
| 571 |
if (!$this->_validateOperation_Attributes('save')) { |
| 572 |
print "<font color=\"red\">DSDataObject->_validateOperation_Attributes('save') for \"{$this->type}\" failed.</font><br>"; |
| 573 |
} |
| 574 |
|
| 575 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 576 |
// add criteria-information to the "DataQuery" to limit the result to this single object/entry |
| 577 |
// HACK!!! move this functionality (':') to "...->addCriteria?) |
| 578 |
//$this->ref_dataquery->addCriteria(':' . $this->objectkey_name . ' = ' . $objectkey); |
| 579 |
|
| 580 |
//print $this->ref_dataquery->getSql() . "<br>"; |
| 581 |
//print "save<br>"; |
| 582 |
//exit; |
| 583 |
|
| 584 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 585 |
// save data |
| 586 |
|
| 587 |
// execute the "DataQuery" |
| 588 |
$this->ref_dataquery->setData($this->attributes); |
| 589 |
$this->ref_dataquery->query(); |
| 590 |
|
| 591 |
// TODO: review this mechanism! |
| 592 |
// patch object-key if this was a create-operation, because new object-keys are provided by the underlying rdbms here |
| 593 |
if ($this->pdlEventName_CurrentObjectOperation == 'add') { |
| 594 |
$this->setObjectKey($this->ref_dataquery->lastInsertId); |
| 595 |
} |
| 596 |
|
| 597 |
} |
| 598 |
|
| 599 |
|
| 600 |
// --------------------------------------------------------------------------------------- |
| 601 |
function delete() { |
| 602 |
|
| 603 |
if (!$this->_delete_startup()) { return; } |
| 604 |
$this->ref_dataquery->query(); |
| 605 |
|
| 606 |
/* |
| 607 |
$eventname = 'remove'; |
| 608 |
|
| 609 |
if (!isset($this->pdlModelObject->events[$eventname])) { |
| 610 |
trigger_error("could not find PDLModelObjectEvent \"$eventname\"", E_USER_ERROR); |
| 611 |
} |
| 612 |
$almost_sql = $this->pdlModelObject->events[$eventname]->getEventPdl(); |
| 613 |
$almost_sql .= ';'; |
| 614 |
|
| 615 |
$almost_sql = str_replace(':' . $this->getID_name(), "'" . $this->getID() . "'", $almost_sql); |
| 616 |
|
| 617 |
$sql = $almost_sql; |
| 618 |
|
| 619 |
if ($sql) { |
| 620 |
$this->dataquery->setSQL($sql); |
| 621 |
$this->dataquery->query(); |
| 622 |
} |
| 623 |
*/ |
| 624 |
|
| 625 |
} |
| 626 |
|
| 627 |
/* |
| 628 |
function setMetaInfo($metainfo) { |
| 629 |
$this->metainfo = $metainfo; |
| 630 |
} |
| 631 |
*/ |
| 632 |
|
| 633 |
function reset() { |
| 634 |
parent::_reset(); |
| 635 |
} |
| 636 |
|
| 637 |
|
| 638 |
// --------------------------------------------------------------------------------------- |
| 639 |
function save_catchAllVars() { |
| 640 |
global $HTTP_GET_VARS; |
| 641 |
while(list($key, $value) = each($this->attributes)) { |
| 642 |
if (isset($HTTP_GET_VARS[$key])) { |
| 643 |
//$this->attributes[$key] = $HTTP_GET_VARS[$key]; |
| 644 |
$this->_setAttribute($key, $HTTP_GET_VARS[$key]); |
| 645 |
} |
| 646 |
} |
| 647 |
} |
| 648 |
|
| 649 |
|
| 650 |
} |
| 651 |
|
| 652 |
|
| 653 |
|
| 654 |
|
| 655 |
|
| 656 |
// ============================================================== |
| 657 |
// implements a collection of "DSDataObject"s interacting with a DataQuery |
| 658 |
class DSDataCollection extends DSAbstractObject { |
| 659 |
|
| 660 |
// - - - - - - - - - - - - - - - - - - - - - - |
| 661 |
// data which influences the result of this "DSDataCollection" |
| 662 |
|
| 663 |
// filters we applied to this DataCollection (a hash of "DSFilter"-objects) |
| 664 |
var $filters; |
| 665 |
// the default concatenator for appending the "filters" to a query with already existing criteria-information |
| 666 |
var $filterConcatenator; |
| 667 |
|
| 668 |
// sortorders we applied to this DataCollection (a hash of "DSSortOrder"-objects) |
| 669 |
var $sortorders; |
| 670 |
|
| 671 |
// - - - - - - - - - - - - - - - - - - - - - - |
| 672 |
// miscellanious data |
| 673 |
|
| 674 |
// paging? |
| 675 |
var $page; |
| 676 |
|
| 677 |
// the number of results |
| 678 |
var $resultcount; |
| 679 |
|
| 680 |
// var $data; |
| 681 |
//var $metainfo; |
| 682 |
|
| 683 |
|
| 684 |
// --------------------------------------------------------------------------------------- |
| 685 |
function DSDataCollection($type, &$ref_session) { |
| 686 |
|
| 687 |
// call parent-constructor |
| 688 |
parent::DSAbstractObject($type, 'all', &$ref_session); |
| 689 |
|
| 690 |
// initialize class-variables |
| 691 |
$this->filters = array(); |
| 692 |
$this->filterConcatenator = 'AND'; |
| 693 |
$this->sortorders = array(); |
| 694 |
} |
| 695 |
|
| 696 |
|
| 697 |
// --------------------------------------------------------------------------------------- |
| 698 |
// creates a new "DSFilter"-object and adds reference to local "filters"-hash |
| 699 |
function &addFilter($filterstring, $logicalOperator = 'AND') { |
| 700 |
slog("DSDataCollection: &addFilter($filterstring)"); |
| 701 |
$r_filter = &new DSFilter($filterstring, $logicalOperator); |
| 702 |
$this->filters[] =& $r_filter; |
| 703 |
return $r_filter; |
| 704 |
} |
| 705 |
|
| 706 |
// --------------------------------------------------------------------------------------- |
| 707 |
// clears all filters from local "filters"-hash |
| 708 |
function clearFilters() { |
| 709 |
slog("DSDataCollection: clearFilters()"); |
| 710 |
$this->filters = array(); |
| 711 |
} |
| 712 |
|
| 713 |
|
| 714 |
// --------------------------------------------------------------------------------------- |
| 715 |
// creates a new "DSSortOrder"-object and adds reference to local "sortorders"-hash |
| 716 |
function &addSortOrder($column, $mode) { |
| 717 |
slog("DSDataCollection: &addSortOrder($column, $mode)"); |
| 718 |
$r_order =& new DSSortOrder($column, $mode); |
| 719 |
array_push($this->sortorders, &$r_order); |
| 720 |
return $r_order; |
| 721 |
} |
| 722 |
|
| 723 |
|
| 724 |
// --------------------------------------------------------------------------------------- |
| 725 |
// limits DataCollection to a certain "page" (for paging of results) |
| 726 |
function &setPage($pagenumber, $pagesize) { |
| 727 |
// debugging |
| 728 |
slog("DSDataCollection: &setPage($pagenumber, $pagesize)"); |
| 729 |
$this->page['number'] = $pagenumber; |
| 730 |
$this->page['size'] = $pagesize; |
| 731 |
} |
| 732 |
|
| 733 |
|
| 734 |
// --------------------------------------------------------------------------------------- |
| 735 |
// loads data into this "DSDataCollection" |
| 736 |
function load() { |
| 737 |
|
| 738 |
//$this->_load_startup(); |
| 739 |
if (!$this->_load_startup()) { return; } |
| 740 |
|
| 741 |
|
| 742 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 743 |
// 1. process filters |
| 744 |
// $this->filterConcatenator |
| 745 |
if (isset($this->filters) && count($this->filters)) { |
| 746 |
reset($this->filters); |
| 747 |
while($r_filter =& current($this->filters)) { |
| 748 |
if ($strFilter = $r_filter->getParsed()) { |
| 749 |
//$almost_sql_FilterPart .= $strParsed . $sql_concat; |
| 750 |
//$this->ref_dataquery->addCriteria(':' . $this->objectkey_name . ' = ' . $this->getObjectKey()); |
| 751 |
$this->ref_dataquery->addCriteria($strFilter, $r_filter->logicalOperator); |
| 752 |
} |
| 753 |
next($this->filters); |
| 754 |
} |
| 755 |
// clear all filters |
| 756 |
$this->filters = array(); |
| 757 |
} |
| 758 |
|
| 759 |
|
| 760 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 761 |
// 2. process orders |
| 762 |
if (isset($this->sortorders) && count($this->sortorders)) { |
| 763 |
reset($this->sortorders); |
| 764 |
while($r_order =& current($this->sortorders)) { |
| 765 |
$this->ref_dataquery->addOrder($r_order->getAttribute(), $r_order->getOrderAscDesc()); |
| 766 |
next($this->sortorders); |
| 767 |
} |
| 768 |
} |
| 769 |
|
| 770 |
|
| 771 |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 772 |
// 3. limit? |
| 773 |
if ( isset($this->page['number']) && isset($this->page['size']) ) { |
| 774 |
$nr = $this->page['number']; |
| 775 |
$size = $this->page['size']; |
| 776 |
$offset = $nr * $size; |
| 777 |
//$almost_sql .= " LIMIT $offset, $size"; |
| 778 |
$strLimit = "$offset, $size"; |
| 779 |
$this->ref_dataquery->addLimit($strLimit); |
| 780 |
} |
| 781 |
|
| 782 |
|
| 783 |
// fetch data |
| 784 |
$this->ref_dataquery->query(); |
| 785 |
$this->resultcount = $this->ref_dataquery->getRowCount(); |
| 786 |
$this->ref_dataquery->retrieveMetaInfo(); |
| 787 |
//$this->metainfo = $this->dataquery->metainfo; |
| 788 |
|
| 789 |
} |
| 790 |
|
| 791 |
|
| 792 |
// --------------------------------------------------------------------------------------- |
| 793 |
// iterates to the next "DSDataObject" in the "DSDataCollection"-result and returns it |
| 794 |
function &next() { |
| 795 |
|
| 796 |
// debugging |
| 797 |
slog("DSDataCollection: &next()"); |
| 798 |
|
| 799 |
// do an implicit load if we are "unbound" |
| 800 |
if ($this->bool_unbound) { |
| 801 |
$this->load(); |
| 802 |
} |
| 803 |
|
| 804 |
// get next item from a "DataQuery"-result |
| 805 |
if ($this->ref_dataquery->next()) { |
| 806 |
$result = $this->ref_dataquery->getResult(); |
| 807 |
//$obj =& $this->session->Map2Obj($row, $this->pdlModelObject->getObjectType() ); |
| 808 |
//$obj =& $this->session->Map2Obj($row, $this->objecttype_full, $this->pdlEventName, $this->metainfo ); |
| 809 |
//$obj->setMetaInfo($this->metainfo); |
| 810 |
$obj =& $this->ref_session->getDataObject($this->type); |
| 811 |
$obj->fill($result); |
| 812 |
//$obj->attributes =& $result; |
| 813 |
//$obj->bool_unbound = 0; |
| 814 |
return $obj; |
| 815 |
} |
| 816 |
} |
| 817 |
|
| 818 |
|
| 819 |
// --------------------------------------------------------------------------------------- |
| 820 |
// returns the number of results |
| 821 |
function getResultCount() { |
| 822 |
return $this->resultcount; |
| 823 |
} |
| 824 |
|
| 825 |
function reset() { |
| 826 |
parent::_reset(); |
| 827 |
$this->filters = array(); |
| 828 |
$this->sortorders = array(); |
| 829 |
//$this->ref_dataquery->clearCriterias(); |
| 830 |
} |
| 831 |
|
| 832 |
} |
| 833 |
|
| 834 |
?> |
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