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|
class HMongodb {
private $mongo ; //Mongodb连接
private $curr_db_name ;
private $curr_table_name ;
private $error ;
public function getInstance( $mongo_server , $flag = array ())
{
static $mongodb_arr ;
if ( empty ( $flag [ 'tag' ]))
{
$flag [ 'tag' ] = 'default' ; }
if (isset( $flag [ 'force' ]) && $flag [ 'force' ] == true)
{
$mongo = new HMongodb( $mongo_server );
if ( empty ( $mongodb_arr [ $flag [ 'tag' ]]))
{
$mongodb_arr [ $flag [ 'tag' ]] = $mongo ;
}
return $mongo ;
}
else if (isset( $mongodb_arr [ $flag [ 'tag' ]]) && is_resource ( $mongodb_arr [ $flag [ 'tag' ]]))
{
return $mongodb_arr [ $flag [ 'tag' ]];
}
else
{
$mongo = new HMongodb( $mongo_server );
$mongodb_arr [ $flag [ 'tag' ]] = $mongo ;
return $mongo ;
}
}
/**
* 构造函数
* 支持传入多个mongo_server(1.一个出问题时连接其它的server 2.自动将查询均匀分发到不同server)
*
* 参数:
* $mongo_server:数组或字符串-array("127.0.0.1:1111", "127.0.0.1:2222")-"127.0.0.1:1111"
* $connect:初始化mongo对象时是否连接,默认连接
* $auto_balance:是否自动做负载均衡,默认是
*
* 返回值:
* 成功:mongo object
* 失败:false
*/
private function __construct( $mongo_server , $connect =true, $auto_balance =true)
{
if ( is_array ( $mongo_server ))
{
$mongo_server_num = count ( $mongo_server );
if ( $mongo_server_num > 1 && $auto_balance )
{
$prior_server_num = rand(1, $mongo_server_num );
$rand_keys = array_rand ( $mongo_server , $mongo_server_num );
$mongo_server_str = $mongo_server [ $prior_server_num -1];
foreach ( $rand_keys as $key )
{
if ( $key != $prior_server_num - 1)
{
$mongo_server_str .= ',' . $mongo_server [ $key ];
}
}
}
else
{
$mongo_server_str = implode( ',' , $mongo_server );
} }
else
{
$mongo_server_str = $mongo_server ;
}
try {
$this ->mongo = new Mongo( $mongo_server , array ( 'connect' => $connect ));
}
catch (MongoConnectionException $e )
{
$this ->error = $e ->getMessage();
return false;
}
}
/**
* 连接mongodb server
*
* 参数:无
*
* 返回值:
* 成功:true
* 失败:false
*/
public function connect()
{
try {
$this ->mongo->connect();
return true;
}
catch (MongoConnectionException $e )
{
$this ->error = $e ->getMessage();
return false;
}
}
/**
* select db
*
* 参数:$dbname
*
* 返回值:无
*/
public function selectDb( $dbname )
{
$this ->curr_db_name = $dbname ;
}
/**
* 创建索引:如索引已存在,则返回。
*
* 参数:
* $table_name:表名
* $index:索引-array("id"=>1)-在id字段建立升序索引
* $index_param:其它条件-是否唯一索引等
*
* 返回值:
* 成功:true
* 失败:false
*/
public function ensureIndex( $table_name , $index , $index_param = array ())
{
$dbname = $this ->curr_db_name;
$index_param [ 'safe' ] = 1;
try {
$this ->mongo-> $dbname -> $table_name ->ensureIndex( $index , $index_param );
return true;
}
catch (MongoCursorException $e )
{
$this ->error = $e ->getMessage();
return false;
}
}
/**
* 插入记录
*
* 参数:
* $table_name:表名
* $record:记录
*
* 返回值:
* 成功:true
* 失败:false
*/
public function insert( $table_name , $record )
{
$dbname = $this ->curr_db_name;
try {
$this ->mongo-> $dbname -> $table_name ->insert( $record , array ( 'safe' =>true));
return true;
}
catch (MongoCursorException $e )
{
$this ->error = $e ->getMessage();
return false;
}
}
/**
* 查询表的记录数
*
* 参数:
* $table_name:表名
*
* 返回值:表的记录数
*/
public function count ( $table_name )
{
$dbname = $this ->curr_db_name;
return $this ->mongo-> $dbname -> $table_name -> count ();
}
/**
* 更新记录
*
* 参数:
* $table_name:表名
* $condition:更新条件
* $newdata:新的数据记录
* $options:更新选择-upsert/multiple
*
* 返回值:
* 成功:true
* 失败:false
*/
public function update( $table_name , $condition , $newdata , $options = array ())
{
$dbname = $this ->curr_db_name;
$options [ 'safe' ] = 1;
if (!isset( $options [ 'multiple' ]))
{
$options [ 'multiple' ] = 0; }
try {
$this ->mongo-> $dbname -> $table_name ->update( $condition , $newdata , $options );
return true;
}
catch (MongoCursorException $e )
{
$this ->error = $e ->getMessage();
return false;
}
}
/**
* 删除记录
*
* 参数:
* $table_name:表名
* $condition:删除条件
* $options:删除选择-justOne
*
* 返回值:
* 成功:true
* 失败:false
*/
public function remove( $table_name , $condition , $options = array ())
{
$dbname = $this ->curr_db_name;
$options [ 'safe' ] = 1;
try {
$this ->mongo-> $dbname -> $table_name ->remove( $condition , $options );
return true;
}
catch (MongoCursorException $e )
{
$this ->error = $e ->getMessage();
return false;
} }
/**
* 查找记录
*
* 参数:
* $table_name:表名
* $query_condition:字段查找条件
* $result_condition:查询结果限制条件-limit/sort等
* $fields:获取字段
*
* 返回值:
* 成功:记录集
* 失败:false
*/
public function find( $table_name , $query_condition , $result_condition = array (), $fields = array ())
{
$dbname = $this ->curr_db_name;
$cursor = $this ->mongo-> $dbname -> $table_name ->find( $query_condition , $fields );
if (! empty ( $result_condition [ 'start' ]))
{
$cursor ->skip( $result_condition [ 'start' ]);
}
if (! empty ( $result_condition [ 'limit' ]))
{
$cursor ->limit( $result_condition [ 'limit' ]);
}
if (! empty ( $result_condition [ 'sort' ]))
{
$cursor ->sort( $result_condition [ 'sort' ]);
}
$result = array ();
try {
while ( $cursor ->hasNext())
{
$result [] = $cursor ->getNext();
}
}
catch (MongoConnectionException $e )
{
$this ->error = $e ->getMessage();
return false;
}
catch (MongoCursorTimeoutException $e )
{
$this ->error = $e ->getMessage();
return false;
}
return $result ;
}
/**
* 查找一条记录
*
* 参数:
* $table_name:表名
* $condition:查找条件
* $fields:获取字段
*
* 返回值:
* 成功:一条记录
* 失败:false
*/
public function findOne( $table_name , $condition , $fields = array ())
{
$dbname = $this ->curr_db_name;
return $this ->mongo-> $dbname -> $table_name ->findOne( $condition , $fields );
}
/**
* 获取当前错误信息
*
* 参数:无
*
* 返回值:当前错误信息
*/
public function getError()
{
return $this ->error;
}
/*** Mongodb类** examples:
* $mongo = new HMongodb("127.0.0.1:11223");
* $mongo->selectDb("test_db");
* 创建索引
* $mongo->ensureIndex("test_table", array("id"=>1), array('unique'=>true));
* 获取表的记录
* $mongo->count("test_table");
* 插入记录
* $mongo->insert("test_table", array("id"=>2, "title"=>"asdqw"));
* 更新记录
* $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb"));
* 更新记录-存在时更新,不存在时添加-相当于set
* $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb"),array("upsert"=>1));
* 查找记录
* $mongo->find("c", array("title"=>"asdqw"), array("start"=>2,"limit"=>2,"sort"=>array("id"=>1)))
* 查找一条记录
* $mongo->findOne("$mongo->findOne("ttt", array("id"=>1))", array("id"=>1));
* 删除记录
* $mongo->remove("ttt", array("title"=>"bbb"));
* 仅删除一条记录
* $mongo->remove("ttt", array("title"=>"bbb"), array("justOne"=>1));
* 获取Mongo操作的错误信息
* $mongo->getError();
*/
}
|