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https://github.com/Lastorder-DC/rhymix.git
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Updated DB classes to support multiple database connection strings - for when replication is used.
git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@8808 201d5d3c-b55e-5fd7-737f-ddc643e51545
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ucorina
parent
ee1a615008
commit
bb95345fb2
12 changed files with 576 additions and 680 deletions
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@ -47,7 +47,8 @@
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'null' => 'is null',
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);
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var $fd = NULL; ///< connector resource or file description
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var $master_db = NULL; // master database connection string
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var $slave_db = NULL; // array of slave databases connection strings
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var $result = NULL; ///< result
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@ -202,8 +203,9 @@
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* @brief check if is connected
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* @return true: connected, false: not connected
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**/
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function isConnected() {
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return $this->is_connected ? true : false;
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function isConnected($type = 'master', $indx = 0) {
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if($type == 'master') return $this->master_db["is_connected"] ? true : false;
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else return $this->slave_db[$indx]["is_connected"] ? true : false;
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}
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/**
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@ -309,7 +311,7 @@
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* @return result of query
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* @remarks this function finds xml file or cache file of $query_id, compiles it and then execute it
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**/
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function executeQuery($query_id, $args = NULL, $arg_columns = NULL) {
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function executeQuery($query_id, $args = NULL, $arg_columns = NULL, $database_type = 'master') {
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if(!$query_id) return new Object(-1, 'msg_invalid_queryid');
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$this->query_id = $query_id;
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@ -333,7 +335,7 @@
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$cache_file = $this->checkQueryCacheFile($query_id, $xml_file);
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// execute query
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return $this->_executeQuery($cache_file, $args, $query_id, $arg_columns);
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return $this->_executeQuery($cache_file, $args, $query_id, $arg_columns, $database_type);
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}
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@ -369,7 +371,7 @@
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* @param[in] $query_id query id
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* @return result of query
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**/
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function _executeQuery($cache_file, $source_args, $query_id, $arg_columns) {
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function _executeQuery($cache_file, $source_args, $query_id, $arg_columns, $database_type) {
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global $lang;
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if(!file_exists($cache_file)) return new Object(-1, 'msg_invalid_queryid');
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@ -397,7 +399,8 @@
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case 'select' :
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$arg_columns = is_array($arg_columns)?$arg_columns:array();
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$output->setColumnList($arg_columns);
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$output = $this->_executeSelectAct($output);
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$connection = $this->_getConnection('slave');
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$output = $this->_executeSelectAct($output, $connection);
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break;
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}
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@ -580,192 +583,170 @@
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return new DBParser('"');
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}
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// TO BE REMOVED - Used for query compare
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/**
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* @brief returns type of column
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* @param[in] $column_type_list list of column type
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* @param[in] $name name of column type
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* @return column type of $name
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* @remarks columns are usually like a.b, so it needs another function
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**/
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function getColumnType($column_type_list, $name) {
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if(strpos($name, '.') === false) return $column_type_list[$name];
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list($prefix, $name) = explode('.', $name);
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return $column_type_list[$name];
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}
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/**
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* @brief returns the value of condition
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* @param[in] $name name of condition
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* @param[in] $value value of condition
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* @param[in] $operation operation this is used in condition
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* @param[in] $type type of condition
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* @param[in] $column_type type of column
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* @return well modified $value
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* @remarks if $operation is like or like_prefix, $value itself will be modified
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* @remarks if $type is not 'number', call addQuotes() and wrap with ' '
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**/
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function getConditionValue($name, $value, $operation, $type, $column_type) {
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if(!in_array($operation,array('in','notin','between')) && $type == 'number') {
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if(is_array($value)){
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$value = join(',',$value);
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}
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if(strpos($value, ',') === false && strpos($value, '(') === false) return (int)$value;
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return $value;
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}
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if(!is_array($value) && strpos($name, '.') !== false && strpos($value, '.') !== false) {
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list($table_name, $column_name) = explode('.', $value);
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if($column_type[$column_name]) return $value;
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}
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switch($operation) {
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case 'like_prefix' :
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if(!is_array($value)) $value = preg_replace('/(^\'|\'$){1}/', '', $value);
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$value = $value.'%';
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break;
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case 'like_tail' :
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if(!is_array($value)) $value = preg_replace('/(^\'|\'$){1}/', '', $value);
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$value = '%'.$value;
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break;
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case 'like' :
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if(!is_array($value)) $value = preg_replace('/(^\'|\'$){1}/', '', $value);
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$value = '%'.$value.'%';
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break;
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case 'notin' :
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if(is_array($value))
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{
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$value = $this->addQuotesArray($value);
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if($type=='number') return join(',',$value);
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else return "'". join("','",$value)."'";
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}
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else
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{
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return $value;
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}
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break;
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case 'in' :
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if(is_array($value))
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{
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$value = $this->addQuotesArray($value);
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if($type=='number') return join(',',$value);
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else return "'". join("','",$value)."'";
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}
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else
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{
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return $value;
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}
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break;
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case 'between' :
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if(!is_array($value)) $value = array($value);
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$value = $this->addQuotesArray($value);
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if($type!='number')
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{
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foreach($value as $k=>$v)
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{
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$value[$k] = "'".$v."'";
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}
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}
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return $value;
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break;
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default:
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if(!is_array($value)) $value = preg_replace('/(^\'|\'$){1}/', '', $value);
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}
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return "'".$this->addQuotes($value)."'";
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}
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/**
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* @brief returns part of condition
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* @param[in] $name name of condition
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* @param[in] $value value of condition
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* @param[in] $operation operation that is used in condition
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* @return detail condition
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**/
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function getConditionPart($name, $value, $operation) {
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switch($operation) {
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case 'equal' :
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case 'more' :
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case 'excess' :
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case 'less' :
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case 'below' :
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case 'like_tail' :
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case 'like_prefix' :
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case 'like' :
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case 'in' :
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case 'notin' :
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case 'notequal' :
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// if variable is not set or is not string or number, return
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if(!isset($value)) return;
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if($value === '') return;
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if(!in_array(gettype($value), array('string', 'integer'))) return;
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break;
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case 'between' :
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if(!is_array($value)) return;
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if(count($value)!=2) return;
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}
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switch($operation) {
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case 'equal' :
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return $name.' = '.$value;
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break;
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case 'more' :
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return $name.' >= '.$value;
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break;
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case 'excess' :
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return $name.' > '.$value;
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break;
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case 'less' :
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return $name.' <= '.$value;
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break;
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case 'below' :
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return $name.' < '.$value;
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break;
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case 'like_tail' :
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case 'like_prefix' :
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case 'like' :
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return $name.' like '.$value;
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break;
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case 'in' :
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return $name.' in ('.$value.')';
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break;
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case 'notin' :
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return $name.' not in ('.$value.')';
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break;
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case 'notequal' :
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return $name.' <> '.$value;
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break;
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case 'notnull' :
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return $name.' is not null';
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break;
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case 'null' :
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return $name.' is null';
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break;
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case 'between' :
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return $name.' between ' . $value[0] . ' and ' . $value[1];
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break;
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}
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function _getSlaveConnectionStringIndex() {
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$max = count($this->slave_db);
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$indx = rand(0, $max - 1);
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return $indx;
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}
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/**
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* @brief returns condition key
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* @param[in] $output result of query
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* @return array of conditions of $output
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**/
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function getConditionList($output) {
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$conditions = array();
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if(count($output->conditions)) {
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foreach($output->conditions as $key => $val) {
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if($val['condition']) {
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foreach($val['condition'] as $k => $v) {
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$conditions[] = $v['column'];
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}
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}
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}
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function _getConnection($type = 'master', $indx = NULL){
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if($type == master){
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if(!$this->master_db['is_connected'])
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$this->_connect($type);
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return $this->master_db["resource"];
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}
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return $conditions;
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if($indx === NULL)
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$indx = $this->_getSlaveConnectionStringIndex($type);
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if(!$this->slave_db[$indx]['is_connected'])
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$this->_connect($type, $indx);
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return $this->slave_db[$indx]["resource"];
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}
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function _dbInfoExists() {
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if (!$this->master_db)
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return false;
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if (count($this->slave_db) === 0)
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return false;
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return true;
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}
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function _close($connection){
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}
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/**
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* @brief DB disconnection
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* */
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function close($type = 'master', $indx = 0) {
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if (!$this->isConnected($type, $indx))
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return;
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if ($type == 'master')
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$connection = &$this->master_db;
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else
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$connection = &$this->slave_db[$indx];
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$this->_close($connection["resource"]);
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$connection["is_connected"] = false;
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}
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function _begin(){
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return true;
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}
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/**
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* @brief Begin transaction
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* */
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function begin() {
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if (!$this->isConnected() || $this->transaction_started)
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return;
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if($this->_begin())
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$this->transaction_started = true;
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}
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function _rollback(){
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return true;
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}
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/**
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* @brief Rollback
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* */
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function rollback() {
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if (!$this->isConnected() || !$this->transaction_started)
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return;
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if($this->_rollback())
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$this->transaction_started = false;
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}
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function _commit(){
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return true;
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}
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/**
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* @brief Commits
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* */
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function commit($force = false) {
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if (!$force && (!$this->isConnected() || !$this->transaction_started))
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return;
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if($this->_commit())
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$this->transaction_started = false;
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}
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function __query($query, $connection){
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}
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/**
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* @brief : Run a query and fetch the result
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*
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* query: run a query and return the result \n
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* fetch: NULL if no value is returned \n
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* array object if rows are returned \n
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* object if a row is returned \n
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* return\n
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* */
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function _query($query, $connection = null) {
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if($connection == null)
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$connection = $this->_getConnection('master');
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// Notify to start a query execution
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$this->actStart($query);
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// Run the query statement
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$result = $this->__query($query, $connection);
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// Notify to complete a query execution
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$this->actFinish();
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// Return result
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return $result;
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}
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/**
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* @brief DB settings and connect/close
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* */
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function _setDBInfo(){
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$db_info = Context::getDBInfo();
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$this->master_db = $db_info->master_db;
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$this->slave_db = $db_info->slave_db;
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$this->prefix = $db_info->master_db["db_table_prefix"];
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}
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function __connect(){
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}
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function _afterConnect($connection){
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}
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/**
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* @brief DB Connection
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* */
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function _connect($type = 'master', $indx = 0) {
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if ($this->isConnected($type, $indx))
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return;
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// Ignore if no DB information exists
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if (!$this->_dbInfoExists())
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return;
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if ($type == 'master')
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$connection = &$this->master_db;
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else
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$connection = &$this->slave_db[$indx];
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$result = $this->__connect($connection);
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if($result === NULL || $result === false) {
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$connection["is_connected"] = false;
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return;
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}
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// Check connections
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$connection["resource"] = $result;
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$connection["is_connected"] = true;
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$this->_afterConnect($result);
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}
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}
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?>
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