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<? |
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|
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// ================================================================== |
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// main "PDLModel"-object |
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// represents a pdl-model which consists of pdl-objects and/or pdl-associations and some other metadata |
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class PDLModel { |
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|
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// the name of this model |
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var $name; |
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|
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// hash with references to PDLModelObject-objects |
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var $pdlModelObjects; |
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|
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// hash with references to PDLModelDataOperation-objects |
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var $pdlModelDataOperations; |
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|
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// hash with references to PDLModelAssociation-objects |
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var $pdlModelAssociations; |
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|
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// some metadata |
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var $meta_VariableTypes; |
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|
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|
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// ------------------------------------------------------- |
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function PDLModel($modelname, $filename) { |
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|
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slog("PDLModel: PDLModel($modelname, $filename)"); |
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|
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// set the model-name |
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$this->name = $modelname; |
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|
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// clear pdl-objects and pdl-associations |
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$this->pdlModelObjects = array(); |
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$this->pdlModelDataOperations = array(); |
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$this->pdlModelAssociations = array(); |
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|
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// initialize metadata |
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$tmp_vartypes = "BigInteger,BigDecimal,Boolean,Byte,Character,Date,Double,Float,Integer,Long,Short,String,Blob"; |
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$this->meta_VariableTypes = split(',', $tmp_vartypes); |
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|
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// create new "PDLReader"-object ... |
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$pdlreader =& new PDLReader(); |
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// ... and parse PDL-file |
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$pdlreader->parsePdlFile($filename, &$this); |
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|
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} |
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|
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|
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// ------------------------------------------------------- |
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// adds the reference to a given PDLModelObject to local "pdlModelObjects"-hash (with its object-type as key) |
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function addObject($objecttype, &$pdlModelObject) { |
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// check for having defined any events |
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if (count($pdlModelObject->events)) { |
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$pdlModelObject->bool_autoevent = 0; |
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} else { |
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// TODO: what shall happen to "bool_autoevent"? it isn't used for now |
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// either flag "PDLModelObject" to "auto-event" ... |
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// $pdlModelObject->bool_autoevent = 1; |
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// ... or create all needed events right now |
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$pdlModelObject->createEventsFromAttributeMaps(); |
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} |
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$this->pdlModelObjects[$objecttype] =& $pdlModelObject; |
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} |
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|
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// ------------------------------------------------------- |
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// returns the reference to a PDLModelObject by a given ObjectType |
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function &getObject($objecttype) { |
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return $this->pdlModelObjects[$objecttype]; |
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} |
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|
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// ------------------------------------------------------- |
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// |
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function existsObject($objecttype) { |
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return isset($this->pdlModelObjects[$objecttype]); |
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} |
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|
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|
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// ------------------------------------------------------- |
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// adds the reference to a given PDLModelObject to local "pdlModelObjects"-hash (with its object-type as key) |
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function addDataOperation($operationname, &$pdlModelDataOperation) { |
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$this->pdlModelDataOperations[$operationname] =& $pdlModelDataOperation; |
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} |
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|
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// ------------------------------------------------------- |
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// returns the reference to a PDLModelDataOperation by a given operationname |
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function &getDataOperation($operationname) { |
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return $this->pdlModelDataOperations[$operationname]; |
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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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// main "PDLModelObject"-object |
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// represents a pdl-ModelObject which is used to keep track of "PDLModelEvent"-objects (register and query) |
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class PDLModelObject { |
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// ------------------------------------------------------- |
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|
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// the ObjectType of this PDLModelObject |
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var $type; |
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var $objectkey; |
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|
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// is this object an auto-event-object? |
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var $bool_autoevent; |
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|
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// a hash of references to "PDLModelAttribute"-objects |
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var $attributes; |
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|
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// a hash of references to "PDLModelEvent"-objects |
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var $events; |
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|
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// ------ |
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// constructor |
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function PDLModelObject($objecttype) { |
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slog("PDLModelObject: PDLModelObject($objecttype)"); |
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|
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// set ObjectType |
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$this->type = $objecttype; |
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|
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// clear ObjectKey |
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$this->objectkey = ''; |
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|
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$this->bool_autoevent = 0; |
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|
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// clear attributes |
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$this->attributes = array(); |
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// clear events |
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$this->events = array(); |
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} |
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|
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// ------ |
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// creates an object-attribute ("PDLModelAttribute") and adds reference to local "attributes"-hash |
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function &addAttribute($args) { |
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//slog("PDLModelObject: addAttribute($attributename, !content!)"); |
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list($name, $type, $map_name, $map_type_specific) = $args; |
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$r_attr =& new PDLModelAttribute($name, $type, $map_name, $map_type_specific); |
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$this->attributes[$name] =& $r_attr; |
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return $r_attr; |
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} |
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|
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|
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// ------------------------------------------------------------ |
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// creates an event ("PDLModelEvent") and adds reference to local "events"-hash |
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function &_addEvent($args) { |
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list($name, $unreadySql) = $args; |
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$r_ev =& new PDLModelEvent($name, $unreadySql); |
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$this->events[$name] =& $r_ev; |
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return $r_ev; |
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} |
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|
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|
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// ------------------------------------------------------------ |
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// creates an event and maps its metadata |
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function &addEventAndOrMap($args) { |
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list($name, $unreadySql, $map) = $args; |
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$this->_setMap_AllAttributes($map); |
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$r_ev =& $this->_addEvent(array($name, $unreadySql)); |
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return $r_ev; |
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} |
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|
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|
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// ------------------------------------------------------------ |
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function createEventsFromAttributeMaps() { |
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|
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|
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$attributes_ForNameReplacement = array(); |
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$attributes_ForValueReplacement = array(); |
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$columns = array(); |
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$map_attribute2column_ForNameReplacement = array(); |
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|
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$eventpart_tablename = ''; |
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$eventpart_attributes_ForNameReplacement = ''; |
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$eventpart_attributes_ForValueReplacement = ''; |
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$eventpart_attributes_ForValueReplacement_ForInsert = ''; |
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$eventpart_columns = ''; |
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|
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// (insert) |
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$map_column2attribute_ForValueReplacement = array(); |
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$eventpart_columns2attributes_ForValueReplacement = ''; |
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|
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|
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|
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// - - - - - - - - - - - - - - - - - - - - - |
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// 1. build attribute-, column-list and mapping-table |
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reset($this->attributes); |
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while($attribute =& current($this->attributes)) { |
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$attributename = $attribute->name; |
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$attributename_ForNameReplacement = ':' . $attribute->name; |
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$attributename_ForValueReplacement = '!' . $attribute->name; |
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$mapname = $attribute->map_name; |
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// bugfix: before we continue, we should check if "$map_value" is valid, else: skip this |
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if ($mapname) { |
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// attribute |
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array_push($attributes_ForNameReplacement, $attributename_ForNameReplacement); |
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array_push($attributes_ForValueReplacement, $attributename_ForValueReplacement); |
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// column |
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$meta_sql = $attribute['meta_sql']; |
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array_push($columns, $mapname); |
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// map |
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$map_attribute2column_ForNameReplacement[$attributename_ForNameReplacement] = $mapname; |
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$map_column2attribute_ForValueReplacement[$mapname] = $attributename_ForValueReplacement; |
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} |
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next($this->attributes); |
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} |
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$eventpart_attributes_ForNameReplacement = join($attributes_ForNameReplacement, ', '); |
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$eventpart_attributes_ForValueReplacement = join($attributes_ForValueReplacement, ', '); |
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$eventpart_columns = join($columns, ', '); |
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$eventpart_columns2attributes_ForValueReplacement = getAttribStringFromHash($map_column2attribute_ForValueReplacement, ', ', '=', ''); |
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|
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|
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// HACK: |
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$eventpart_tablename = substr($columns[0], 0, strpos($columns[0], '.')); |
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|
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|
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// - - - - - - - - - - - - - - - - - - - - - |
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// 2. create auto-events and store their references |
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|
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// HACKs!? |
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|
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// "retrieve single" |
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$unreadySql = "SELECT $eventpart_columns FROM $eventpart_tablename"; |
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$this->_addEvent(array('retrieve single', $unreadySql)); |
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|
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// "retrieve all" |
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$unreadySql = "SELECT $eventpart_columns FROM $eventpart_tablename"; |
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$this->_addEvent(array('retrieve all', $unreadySql)); |
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|
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// "update" |
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$unreadySql = "UPDATE $eventpart_tablename SET $eventpart_columns2attributes_ForValueReplacement"; |
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$this->_addEvent(array('update', $unreadySql)); |
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|
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// "add" |
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$unreadySql = "INSERT INTO $eventpart_tablename ($eventpart_columns) VALUES ($eventpart_attributes_ForValueReplacement)"; |
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$this->_addEvent(array('add', $unreadySql)); |
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|
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// "remove" |
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$unreadySql = "DELETE FROM $eventpart_tablename"; |
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$this->_addEvent(array('remove', $unreadySql)); |
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|
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|
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} |
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|
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|
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// ------------------------------------------------------------ |
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function setObjectKey($objectkey = '') { |
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if ($objectkey) { |
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$this->objectkey = $objectkey; |
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array_push($this->attributes[$objectkey]->meta_sql['attribs'], "PRIMARY KEY"); |
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} |
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} |
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|
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// ------ |
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// sets the mapping of a single object-attribute |
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function _setMap_SingleAttribute($attributename, $mapname) { |
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slog("PDLModelObject: setMap(!map!)"); |
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$this->attributes[$attributename]->set_Mapping($mapname); |
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} |
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|
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// ------ |
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// sets the mapping of all object-attributes |
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function _setMap_AllAttributes($map) { |
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slog("PDLModelObject: setMap(!map!)"); |
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while(list($attributename, $mapname) = each($map)) { |
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if (isset($this->attributes[$attributename])) { |
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$this->_setMap_SingleAttribute($attributename, $mapname); |
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} |
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} |
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} |
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|
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// ------ |
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// returns all "PDLModelAttribute"-objects |
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function getAttributes() { |
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return $this->attributes; |
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} |
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|
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// ------ |
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// returns an event by given eventname |
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function &getEvent($eventname) { |
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slog("PDLModelObject: &getEvent($eventname)"); |
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return $this->events[$eventname]; |
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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 getEventContent($eventname) { |
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print "PDLModelObject_getEventContent: \"$eventname\"<br>"; |
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return $this->events[$eventname]->getContent(); |
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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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// -------------------------------------------------------------------------------------------------------------- |
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// main "PDLModelAttribute"-object |
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// represents a pdl-model-attribute which is used to hold metadata about "object-attributes" |
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class PDLModelAttribute { |
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|
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// the attributes of this attribute |
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var $name; |
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var $type; |
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var $map_name; |
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var $map_name_full; |
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var $map_type_specific; |
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|
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// sql-meta-information |
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var $meta_sql; |
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|
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// constructor |
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function PDLModelAttribute($name = '', $type = '', $map_name = '', $map_type_specific = '') { |
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|
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slog("PDLModelAttribute: PDLModelAttribute($name, !content_raw!)"); |
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|
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// setting event-name ... |
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$this->name = $name; |
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$this->type = $type; |
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$this->map_name = $map_name; |
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$this->map_type_specific = $map_type_specific; |
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|
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// initialize the "meta_sql"-array with used keys |
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$this->meta_sql = array('table' => '', 'column' => '', 'type' => '', 'length' => '', 'attribs' => array()); |
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|
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// do some work |
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$this->_create_meta_sql(); |
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|
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} |
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|
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function set_Mapping($map_name) { |
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$this->map_name = $map_name; |
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$this->_create_meta_sql(); |
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} |
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|
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function _create_meta_sql() { |
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|
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// set table / columnname |
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if (stristr($this->map_name, '.')) { |
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$tmp_arr = split('\.', $this->map_name); |
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$this->meta_sql['table'] = $tmp_arr[0]; |
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$this->meta_sql['column'] = $tmp_arr[1]; |
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} else { |
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// set columnname only |
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$this->meta_sql['column'] = $this->map_name; |
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} |
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|
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/* |
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The PDL Attribute Types are the allowed Java types for attributes defined in PDL. |
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Therefore, every type seen here is the Java type returned by the Persistence System. |
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|
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BigInteger |
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BigDecimal |
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Boolean |
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Byte |
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Character |
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Date |
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Double |
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Float |
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Integer |
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Long |
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Short |
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String (this should be used for both Strings and Clobs) |
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Blob (actually returns a Byte[] and will be depricated once |
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the PDL compiler supports arrays) |
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*/ |
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|
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if ($this->map_type_specific) { |
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$this->meta_sql['type'] = $this->map_type_specific; |
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} else { |
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switch ($this->type) { |
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case 'BigDecimal': |
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$this->meta_sql['type'] = 'bigint'; |
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$this->meta_sql['length'] = 20; |
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break; |
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case 'String': |
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$this->meta_sql['type'] = 'varchar'; |
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$this->meta_sql['length'] = 255; |
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break; |
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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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|
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} |
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|
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|
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|
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// ------------------------------------------------------- |
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// main "PDLModelEvent"-object |
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// represents a pdl-model-event which is used to hold metadata about "object-attributes" <-> "rdbms-columns" - mappings |
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class PDLModelAbstractDataOperation { |
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// ------------------------------------------------------- |
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|
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// the name of this event |
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var $name; |
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var $unreadySql; |
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|
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// ------ |
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// constructor |
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function PDLModelAbstractDataOperation($name, $unreadySql) { |
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slog("PDLModelEvent: PDLModelEvent($name, !content_raw!)"); |
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// setting event-name ... |
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$this->name = $name; |
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// ... and the raw content |
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$this->unreadySql = $unreadySql; |
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} |
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|
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function get_unreadySql() { |
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return $this->unreadySql; |
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} |
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|
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} |
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|
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class PDLModelDataOperation extends PDLModelAbstractDataOperation { } |
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class PDLModelEvent extends PDLModelAbstractDataOperation { } |
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|
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?> |
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