Updated DB classes for supporting prepared statements - SQL string can now be returned with '?' instead of argument values.

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0-DB@8458 201d5d3c-b55e-5fd7-737f-ddc643e51545

classes/db/DB.class.php

@@ -457,16 +457,16 @@
             $this->_query($query);
         }
         
-    	function getSelectSql($query){	
-			$select = $query->getSelectString();
+    	function getSelectSql($query, $with_values = true){	
+			$select = $query->getSelectString($with_values);
 			if($select == '') return new Object(-1, "Invalid query");
 			$select = 'SELECT ' .$select;
 			
-			$from = $query->getFromString();
+			$from = $query->getFromString($with_values);
 			if($from == '') return new Object(-1, "Invalid query");
 			$from = ' FROM '.$from;
 			
-			$where = $query->getWhereString();
+			$where = $query->getWhereString($with_values);
 			if($where != '') $where = ' WHERE ' . $where;
 							
 			$groupBy = $query->getGroupByString();
@@ -481,7 +481,7 @@
 		 	return $select . ' ' . $from . ' ' . $where . ' ' . $groupBy . ' ' . $orderBy . ' ' . $limit;
 		}  
 
-   		function getDeleteSql($query){
+   		function getDeleteSql($query, $with_values = true){
 			$sql = 'DELETE ';
 
 			// TODO Add support for deleting based on alias, for both simple FROM and multi table join FROM clause
@@ -489,32 +489,32 @@
 			
 			$sql .= $tables[0]->getAlias();
 			
-			$from = $query->getFromString();
+			$from = $query->getFromString($with_values);
 			if($from == '') return new Object(-1, "Invalid query");
 			$sql .= ' FROM '.$from;			
 			
-			$where = $query->getWhereString();
+			$where = $query->getWhereString($with_values);
 			if($where != '') $sql .= ' WHERE ' . $where;			
 			
 			return $sql;
 		}	
 
-    	function getUpdateSql($query){
+    	function getUpdateSql($query, $with_values = true){
 			$columnsList = $query->getSelectString();
 			if($columnsList == '') return new Object(-1, "Invalid query");
 			
 			$tableName = $query->getFirstTableName();
 			if($tableName == '') return new Object(-1, "Invalid query");
 			
-			$where = $query->getWhereString();
+			$where = $query->getWhereString($with_values);
 			if($where != '') $where = ' WHERE ' . $where;
 									
 			return "UPDATE $tableName SET $columnsList ".$where;
 		}		
 		
-    	function getInsertSql($query){
+    	function getInsertSql($query, $with_values = true){
 			$tableName = $query->getFirstTableName();
-			$values = $query->getInsertString();
+			$values = $query->getInsertString($with_values);
 			
 			return "INSERT INTO $tableName \n $values";
 		}		

classes/db/DBMssql.class.php

@@ -434,6 +434,42 @@
             return $this->_query($query);
         }
 
+        function getSelectSql($query){
+       		$with_value = false;
+        	
+       		//$limitOffset = $query->getLimit()->getOffset();
+       		//if($limitOffset)
+       			// TODO Implement Limit with offset with subquery
+		 	$limit = '';$limitCount = '';
+		 	if($query->getLimit())
+       			$limitCount = $query->getLimit()->getLimit();
+		 	if($limitCount != '') $limit = 'SELECT TOP ' . $limitCount;       		
+       		
+			$select = $query->getSelectString($with_values);
+			if($select == '') return new Object(-1, "Invalid query");
+			if($limit != '')
+				$select = $limit.' '.$select;
+			else
+				$select = 'SELECT ' .$select;
+			
+			$from = $query->getFromString($with_values);
+			if($from == '') return new Object(-1, "Invalid query");
+			$from = ' FROM '.$from;
+			
+			$where = $query->getWhereString($with_values);
+			if($where != '') $where = ' WHERE ' . $where;
+							
+			$groupBy = $query->getGroupByString();
+			if($groupBy != '') $groupBy = ' GROUP BY ' . $groupBy;
+			
+			$orderBy = $query->getOrderByString();
+			if($orderBy != '') $orderBy = ' ORDER BY ' . $orderBy;
+			
+
+
+		 	return $select . ' ' . $from . ' ' . $where . ' ' . $groupBy . ' ' . $orderBy;
+        }
+        
         /**
          * @brief Handle selectAct
          *
@@ -451,6 +487,9 @@
             return $buff;
         }
 
+        function getParser(){
+        	return new DBParser("[", "]");
+        }
   
     }
 

classes/db/queryparts/Query.class.php

@@ -11,6 +11,11 @@
 		var $orderby;
 		var $limit;
 		
+		var $arguments = array();
+		
+		function addArgument($argument){
+			$this->arguments[] = $argument;
+		}
 		
 		function setQueryId($queryID){
 			$this->queryID = $queryID;
@@ -106,28 +111,28 @@
 			return $this->action;
 		}
 		
-		function getSelectString(){		
+		function getSelectString($with_values = true){		
 			$select = '';
 			foreach($this->columns as $column){
 				if($column->show())
-					$select .= $column->getExpression() . ', ';
+					$select .= $column->getExpression($with_values) . ', ';
 			}
 			if(trim($select) == '') return '';
 			$select = substr($select, 0, -2);
 			return $select;
 		}
 		
-		function getUpdateString(){		
-			return $this->getSelectString();
+		function getUpdateString($with_values = true){		
+			return $this->getSelectString($with_values);
 		}		
 		
-		function getInsertString(){		
+		function getInsertString($with_values = true){		
 			$columnsList = '';
 			$valuesList = '';
 			foreach($this->columns as $column){
 				if($column->show()){
 					$columnsList .= $column->getColumnName() . ', ';
-					$valuesList .= $column->getValue() . ', ';
+					$valuesList .= $column->getValue($with_values) . ', ';
 				}
 			}
 			$columnsList = substr($columnsList, 0, -2);
@@ -140,23 +145,23 @@
 			return $this->tables;
 		}
 		
-		function getFromString(){
+		function getFromString($with_values = true){
 			$from = '';
 			$simple_table_count = 0;
 			foreach($this->tables as $table){
-				if($table->isJoinTable() || !$simple_table_count) $from .= $table->toString() . ' ';
-				else $from .= ', '.$table->toString() . ' ';
+				if($table->isJoinTable() || !$simple_table_count) $from .= $table->toString($with_values) . ' ';
+				else $from .= ', '.$table->toString($with_values) . ' ';
 				$simple_table_count++;
 			}
 			if(trim($from) == '') return '';
 			return $from;
 		}
 		
-		function getWhereString(){
+		function getWhereString($with_values = true){
 			$where = '';
 			if(count($this->conditions) > 0){
 				foreach($this->conditions as $conditionGroup){
-					$where .= $conditionGroup->toString();
+					$where .= $conditionGroup->toString($with_values);
 				}
 				if(trim($where) == '') return '';
 				

classes/db/queryparts/condition/Condition.class.php

@@ -23,8 +23,10 @@
 			return is_a($this->argument, 'Argument');
 		}
 		
-		function toString(){
-			return $this->toStringWithValue();
+		function toString($withValue = true){
+			if($withValue)
+				return $this->toStringWithValue();
+			return $this->toStringWithoutValue();
 		}
 		
 		function toStringWithoutValue(){

classes/db/queryparts/condition/ConditionGroup.class.php

@@ -4,12 +4,12 @@
 		var $conditions;
 		var $pipe;
 		
-		function ConditionGroup($conditions, $pipe = ""){
+		function ConditionGroup($conditions, $pipe = "") {
 			$this->conditions = $conditions;
 			$this->pipe = $pipe;
 		}
 		
-		function toString(){
+		function toString($with_value = true){
 			if($this->pipe !== "")
 				$group = $this->pipe .' (';
 			else $group = '';
@@ -19,7 +19,7 @@
 			foreach($this->conditions as $condition){
 				if($condition->show()){
 					if($cond_indx === 0) $condition->setPipe("");
-					$group .= $condition->toString() . ' ';
+					$group .= $condition->toString($with_value) . ' ';
 					$cond_indx++;
 				}
 			}

classes/db/queryparts/expression/InsertExpression.class.php

@@ -15,8 +15,10 @@
 			$this->argument = $argument;
 		}
 		
-		function getValue(){
-			return $this->argument->getValue();
+		function getValue($with_values = true){
+			if($with_values)
+				return $this->argument->getValue();
+			return '?';
 		}
 		
 		function show(){

classes/db/queryparts/expression/UpdateExpression.class.php

@@ -14,8 +14,10 @@
 			$this->argument = $argument;
 		}
 		
-		function getExpression(){
-			return $this->getExpressionWithValue();
+		function getExpression($with_value = true){
+			if($with_value)
+				return $this->getExpressionWithValue();
+			return $this->getExpressionWithoutValue();
 		}
 		
 		function getExpressionWithValue(){

classes/db/queryparts/table/JoinTable.class.php

@@ -20,12 +20,12 @@
 			$this->conditions = $conditions;
 		}
 		
-		function toString(){
+		function toString($with_value = true){
 			$part = $this->join_type . ' ' . $this->name ;
 			$part .= $this->alias ? ' as ' . $this->alias : '';
 			$part .= ' on ';
 			foreach($this->conditions as $conditionGroup)
-				$part .= $conditionGroup->toString();
+				$part .= $conditionGroup->toString($with_value);
 			return $part;
 		}
 		

classes/xml/XmlQueryParser.class.php

@@ -14,8 +14,14 @@
 
     class XmlQueryParser extends XmlParser {
 		var $dbParser;
+    	var $db_type;
+    	
+    	function XmlQueryParser($db_type = NULL){
+    		$this->db_type = $db_type;
+    	}
     	
         function parse($query_id, $xml_file, $cache_file) {
+        	
         	// Read xml file
         	$xml_obj = $this->getXmlFileContent($xml_file); 
             
@@ -29,15 +35,17 @@
         }
         
         // singleton
-       /* function &getDBParser(){
+       function &getDBParser(){
         	static $dbParser;
         	if(!$dbParser){
-        		//$oDB = &DB::getInstance();
-				//$dbParser = $oDB->getParser();
-				return new DBParser('"');
+        		if(isset($this->db_type))
+        			$oDB = &DB::getInstance($this->db_type);
+        		else 
+        			$oDB = &DB::getInstance();
+				$dbParser = $oDB->getParser();
         	}
         	return $dbParser;
-        }*/
+        }
         
         function getXmlFileContent($xml_file){
             $buff = FileHandler::readFile($xml_file);
@@ -46,11 +54,5 @@
             unset($buff);
             return $xml_obj;        	
         }
-        
-    	function &getDBParser(){
-        	if(!$this->dbParser)
-				$this->dbParser = new DBParser('"');
-        	return $this->dbParser;
-        }
     }
 ?>

classes/xml/xmlquery/QueryParser.class.php

@@ -119,9 +119,10 @@ class QueryParser {
 		foreach($arguments as $argument){
 			if(isset($argument) && $argument->getArgumentName()){
 			$prebuff .= $argument->toString();
-			$prebuff .= sprintf("$%s_argument->escapeValue('%s');\n"
+			$prebuff .= sprintf("$%s_argument->setColumnType('%s');\n"
 				, $argument->getArgumentName()
 				, $this->column_type[$this->getQueryId()][$argument->getColumnName()] );
+			$prebuff .= sprintf('$query->addArgument($%s_argument);', $argument->getArgumentName());
 			}
 		}
 		$prebuff .= "\n";

classes/xml/xmlquery/argument/Argument.class.php

@@ -36,7 +36,7 @@
 				$this->value = $default_value;
 		}
 		
-		function escapeValue($column_type){
+		function setColumnType($column_type){
 			if(!isset($this->value)) return;
 			if($column_type === '') return;