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cvsjoko |
1.1 |
<? |
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// =========================================================== |
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class AbstractQueryStatement { |
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var $sql_in_base; |
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var $sql_out_build; |
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var $sql_out_ready; |
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var $bool_built; |
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var $bool_ready_good; |
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var $bool_hasToBeMapped; |
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var $criterias; |
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var $orders; |
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var $limits; |
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var $map; |
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var $data; |
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var $crud; |
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// ---------------------------------------------------- |
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function AbstractQueryStatement($map = array()) { |
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$this->sql_in_base = ''; |
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$this->sql_out_build = ''; |
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$this->sql_out_ready = ''; |
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$this->bool_built = 0; |
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$this->bool_ready_good = 0; |
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$this->bool_hasToBeMapped = 0; |
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$this->criterias = array(); |
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$this->orders = array(); |
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$this->limits = array(); |
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$this->map = array(); |
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$this->data = array(); |
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$this->crud = ''; |
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/* |
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if (count($map)) { |
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$this->setMap($map); |
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} |
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*/ |
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} |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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// getter- and setter-methods |
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function setQuery($sql) { |
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// strip bounding whitespaces |
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$sql = trim($sql); |
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// strip trailing semicolon, if present |
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if (substr($sql, -1) == ';') { |
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$sql = substr($sql, 0, -1); |
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} |
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// set sql-string locally |
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$this->sql_in_base = $sql; |
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} |
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function setMap($map = array()) { |
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if (count($map)) { |
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$this->bool_hasToBeMapped = 1; |
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// determine type of map, TODO: don't pass PDLAttributes in here any more!!! |
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reset($map); |
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if (strtolower(get_class(current($map))) == 'pdlmodelattribute') { |
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while($attribute =& current($map)) { |
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$attributename = $attribute->name; |
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$mapname = $attribute->map_name; |
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print $attributename . "," . $mapname . "<br>"; |
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$map_new[$attributename] = $mapname; |
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next($map); |
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} |
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$map = $map_new; |
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} |
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$this->map = $map; |
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} else { |
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$this->bool_hasToBeMapped = 0; |
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} |
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} |
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function setData($data = array()) { |
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if (count($data)) { |
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$this->bool_data_set = 1; |
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$this->data = $data; |
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} else { |
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$this->bool_data_set = 0; |
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} |
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} |
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function setSql_createFromMap($map) { |
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$this->sql_in_base = $sql; |
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$this->setMap($map); |
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} |
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function getSql() { |
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if (!$this->bool_built) { $this->_build(); } |
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if ($this->bool_ready_good) { |
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return $this->sql_out_ready; |
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} |
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} |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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// processor-methods |
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function addCriteria($argument, $logicalOperator = 'AND') { |
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$criteria = array('argument' => $argument, 'logicalOperator' => $logicalOperator); |
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array_push($this->criterias, $criteria); |
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} |
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function addOrder($argument, $modifier = 'ASC') { |
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$order = array('argument' => $argument, 'modifier' => $modifier); |
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array_push($this->orders, $order); |
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} |
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function addLimit($argument) { |
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$limit = array('argument' => $argument); |
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array_push($this->limits, $limit); |
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} |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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// builder-methods |
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function _build() { |
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$this->sql_out_build = $this->sql_in_base; |
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$bool_whereAppended = 0; |
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// . . . . . . . . . . . . . . . . . . . |
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// 1. determine type of query (CRUD) |
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// determine "CRUD" (create, retrieve, update, delete) |
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$this->crud = ""; |
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if (stristr($this->sql_out_build, 'INSERT INTO')) { $this->crud = "C"; } |
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if (stristr($this->sql_out_build, 'SELECT')) { $this->crud = "R"; } |
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if (stristr($this->sql_out_build, 'UPDATE')) { $this->crud = "U"; } |
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if (stristr($this->sql_out_build, 'DELETE')) { $this->crud = "D"; } |
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// . . . . . . . . . . . . . . . . . . . |
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// 2. decoration |
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// --- |
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// criterias |
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if (count($this->criterias)) { |
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// do we need a "WHERE"? |
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// HACK: do more sophisticated, for now, no "where" can appear in data regularly!!! :-( |
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if (!stristr($this->sql_out_build, 'where')) { |
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$bool_whereAppended = 1; |
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$this->sql_out_build .= ' WHERE '; |
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} |
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$criteriastring = ''; |
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$bool_first = 1; |
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reset($this->criterias); |
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while($criteria = current($this->criterias)) { |
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if (!$bool_first || !$bool_whereAppended) { |
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$criteriastring .= ' ' . $criteria['logicalOperator'] . ' '; |
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} |
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$criteriastring .= $criteria['argument']; |
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next($this->criterias); |
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$bool_first = 0; |
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} |
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$this->sql_out_build .= $criteriastring; |
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} |
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// --- |
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// orders |
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if (count($this->orders)) { |
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$orderstring = ' order BY '; |
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$orderlist = array(); |
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reset($this->orders); |
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while($order = current($this->orders)) { |
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array_push($orderlist, $order['argument'] . ' ' . $order['modifier']); |
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next($this->orders); |
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} |
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$orderstring .= join($orderlist, ', '); |
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$this->sql_out_build .= $orderstring; |
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} |
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// --- |
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// limits |
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if (count($this->limits)) { |
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$limitstring = ' LIMIT '; |
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$limitlist = array(); |
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reset($this->limits); |
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while($limit = current($this->limits)) { |
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array_push($limitlist, $limit['argument']); |
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next($this->limits); |
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} |
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$limitstring .= join($limitlist, ', '); |
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$this->sql_out_build .= $limitstring; |
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} |
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// . . . . . . . . . . . . . . . . . . . |
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// 3. mapping |
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// if we have ... |
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if ($this->bool_hasToBeMapped) { |
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// ... we should check for having a map ... |
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if ($this->map) { |
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// ... if we do, start mapping! |
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$this->_doMapping(); |
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} else { |
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// ... trigger an error! |
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print "<font color=\"red\">In \"SqlStatement->_build()\" there is an \"bool_hasToBeMapped\", but no \"map\".</font><br>"; |
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} |
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} |
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// finish sql-statement with semicolon |
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$this->sql_out_build .= ';'; |
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// set "ready"-statement |
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$this->sql_out_ready = $this->sql_out_build; |
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// analyze, what we've built |
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$this->_analyzeOutputQuery(); |
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} |
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function _doMapping() { |
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// HACK/TODO: |
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// right now we use here "PDLModelAttribute"-objects for building our map, we should definitely not! |
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// (logically yes, but not physically, since this is "lib_database_sql.php.inc", |
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// which has got absolutely nothing to do with "DataStore" or "PDL" - stuff!!!) |
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$list_attributes = array(); |
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$list_columns = array(); |
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$map = array(); |
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$map_values = array(); |
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// - - - - - - - - - - - - - - - - - - - - - |
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// 1. build attribute-list, column-list and mapping-table |
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while(list($attributename, $mapname) = each($this->map)) { |
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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($list_attributes, $attributename); |
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// column |
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//$meta_sql = $attribute['meta_sql']; |
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array_push($list_columns, $mapname); |
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// map |
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// was: |
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// $map[$map_key] = $mapname; |
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// is: |
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// now we have two different kinds of maps here: |
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// a) the "normal" map, which maps attribute-names to map-names (for "SELECT"s) |
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$map[$attributename] = $mapname; |
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// b) the "value" map, which maps attribute-names to attribute-values (for "INSERT"s or "UPDATE"s) |
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if ( ($this->crud == 'C') || ($this->crud == 'U') ) { |
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if (!$this->bool_data_set) { |
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print "<font color=\"red\">_doMapping: \"INSERT\"- or \"UPDATE\"-query requested, but no data was set. Further object-operations will be aborted.</font><br>"; |
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exit; |
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} |
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$map_values[$attributename] = $this->data[$attributename]; |
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} |
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} |
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//next($this->map); |
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} |
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//print "out_build: " . $this->sql_out_build . "<br>"; |
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// - - - - - - - - - - - - - - - - - - - - - |
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// 2. build attribute- and column-list |
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$wrkString = $this->sql_out_build; |
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while( list($attribute_name, $map_name) = each($map) ) { |
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$this->sql_out_build = str_replace(':' . $attribute_name, $map_name, $this->sql_out_build); |
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} |
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if ( ($this->crud == 'C') || ($this->crud == 'U') ) { |
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if (count($map_values)) { |
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$use_list_attributes = array_keys($map_values); |
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$use_list_values = array_values($map_values); |
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modifyArray($use_list_attributes, array('prefix' => '/(!', 'postfix' => ')(\W)/')); |
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modifyArray($use_list_values, array('prefix' => "'", 'postfix' => "'\\2")); |
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/* |
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while( list($attribute_name, $attribute_value) = each($map_values) ) { |
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$map_values_use['!' . $attribute_name] = $attribute_value; |
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//$this->sql_out_build = str_replace('!' . $attribute_name, "'" . $attribute_value . "'", $this->sql_out_build); |
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} |
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*/ |
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$this->sql_out_build = preg_replace($use_list_attributes, $use_list_values, $this->sql_out_build); |
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} |
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} |
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//print "out_build: " . $this->sql_out_build . "<br>"; |
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// out now: |
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//$wrkString = ereg_replace("[[:<:]]" . $key . "[[:>:]]", $value, $wrkString); |
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} |
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// ---------------------------------------------------- |
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function _analyzeOutputQuery() { |
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// we assume a "good" query |
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$bool_good = 1; |
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// get ready query |
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$oq = $this->sql_out_build; |
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// replace all value-stuff |
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//$oq = str_replace('', '', $oq); |
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// check for unmapped items |
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if (preg_match('/(:\w+)/', $oq, $regs)) { |
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print "<font color=\"red\">_analyzeOutputQuery: Detected unmapped item(s) in query \"$oq\", query will be set invalid.</font><br>"; |
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print "Item(s) was/were: \"{$regs[1]}\".</font><br>"; |
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$bool_good = 0; |
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} |
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// check for deletes without criteria ("where") |
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if ( (stristr($oq, 'DELETE FROM')) && (!stristr($oq, 'WHERE')) ) { |
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print "<font color=\"red\">_analyzeOutputQuery: Detected \"DELETE\" without \"WHERE\" in query \"$oq\", query will be set invalid.</font><br>"; |
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$bool_good = 0; |
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} |
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// set "bool_ready_good" if the query is valid |
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$this->bool_ready_good = $bool_good; |
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} |
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} |
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?> |
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