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102 lines
3.4 KiB
PHP
102 lines
3.4 KiB
PHP
<?php
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/**
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* CSqliteCommandBuilder class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CSqliteCommandBuilder provides basic methods to create query commands for SQLite tables.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.db.schema.sqlite
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* @since 1.0
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*/
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class CSqliteCommandBuilder extends CDbCommandBuilder
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{
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/**
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* Generates the expression for selecting rows with specified composite key values.
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* This method is overridden because SQLite does not support the default
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* IN expression with composite columns.
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* @param CDbTableSchema $table the table schema
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* @param array $values list of primary key values to be selected within
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* @param string $prefix column prefix (ended with dot)
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* @return string the expression for selection
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*/
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protected function createCompositeInCondition($table,$values,$prefix)
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{
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$keyNames=array();
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foreach(array_keys($values[0]) as $name)
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$keyNames[]=$prefix.$table->columns[$name]->rawName;
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$vs=array();
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foreach($values as $value)
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$vs[]=implode("||','||",$value);
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return implode("||','||",$keyNames).' IN ('.implode(', ',$vs).')';
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}
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/**
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* Creates a multiple INSERT command.
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* This method could be used to achieve better performance during insertion of the large
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* amount of data into the database tables.
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* @param mixed $table the table schema ({@link CDbTableSchema}) or the table name (string).
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* @param array[] $data list data to be inserted, each value should be an array in format (column name=>column value).
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* If a key is not a valid column name, the corresponding value will be ignored.
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* @return CDbCommand multiple insert command
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*/
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public function createMultipleInsertCommand($table,array $data)
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{
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$this->ensureTable($table);
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$params=array();
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$columnInsertNames=array();
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$rowInsertValues=array();
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$columns=array();
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foreach($data as $rowData)
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{
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foreach($rowData as $columnName=>$columnValue)
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{
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if(array_search($columnName,$columns,true)===false)
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if($table->getColumn($columnName)!==null)
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$columns[]=$columnName;
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}
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}
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foreach($columns as $name)
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$columnInsertNames[]=$this->getDbConnection()->quoteColumnName($name);
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foreach($data as $rowKey=>$rowData)
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{
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$columnInsertValues=array();
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foreach($columns as $columnName)
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{
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$column=$table->getColumn($columnName);
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$columnValue=array_key_exists($columnName,$rowData) ? $rowData[$columnName] : new CDbExpression('NULL');
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if($columnValue instanceof CDbExpression)
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{
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$columnInsertValue=$columnValue->expression;
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foreach($columnValue->params as $columnValueParamName=>$columnValueParam)
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$params[$columnValueParamName]=$columnValueParam;
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}
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else
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{
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$columnInsertValue=':'.$columnName.'_'.$rowKey;
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$params[':'.$columnName.'_'.$rowKey]=$column->typecast($columnValue);
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}
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$columnInsertValues[]=$columnInsertValue.' AS '.$columnName;
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}
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$rowInsertValues[]='SELECT '.implode(', ', $columnInsertValues);
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}
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$sql='INSERT INTO '.$this->getDbConnection()->quoteTableName($table->name)
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.' ('.implode(', ',$columnInsertNames).') '.implode(' UNION ',$rowInsertValues);
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$command=$this->getDbConnection()->createCommand($sql);
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foreach($params as $name=>$value)
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$command->bindValue($name,$value);
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return $command;
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}
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}
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