Cassandra的PHP客户端的另一个选择---SimpleCassie_cassie7simple

接上例：http://blog.csdn.net/kunshan_shenbin/article/details/7193289

官方主页：http://code.google.com/p/simpletools-php/

API介绍：http://code.google.com/p/simpletools-php/wiki/SimpleCassie

和上例一样，依然尝试将SimpleCassie继承到CodeIgniter中运行。

1. 下载源码：http://code.google.com/p/simpletools-php/downloads/list，解压后把SimpleCassie.php拷贝至application/libraries下。

2. 修改autoload.php如下：

$autoload['libraries'] = array('SimpleCassie', 'smarty');

注意，如果和上例是同一个工程，则不用让SimpleCassie和上例中的db同时自动加载，因为他们都是cassandra的client类库，很多的class同名的。

3. 为了能够被加载进codeigniter，SimpleCassie的构造函数需要修改一下：

		public function __construct() {}
		
// 		public function __construct($host,$port=9160,$timeout=null)
// 		{
// 			$this->__nodes[$host] = array($port,$timeout);
// 		}

由于对CodeIgniter不是很熟，这一步是不是必须目前不敢确定。

4. 在controller里可以直接使用SimpleCassie类库了：

$cassie = $this->simplecassie;
		$cassie->addNode("192.168.11.124", 9160);
		$cassie->addNode("192.168.11.185", 9160);
		if(!$cassie->isConnected())
			throw new Exception('Couldn\'t connect to server');
		
		$activeNode = $cassie->getActiveNode();
		
		$cassie->keyspace('LiftDNA_DB');
		
		$cassie->keyspace('MyApp')->cf('LiftDNA_Table')->key('shenyi')->column('age')->set('27');
		$cassie->cf('LiftDNA_Table')->key('yangye')->column('age')->set('28');
		
		//$cassie->cf('LiftDNA_Table')->key('yangye')->column('name')->batch('28');
		//$cassie->cf('LiftDNA_Table')->key('yangye')->column('age')->batch('29');
		//$cassie->batchCommit();
		
		$age = $cassie->cf('LiftDNA_Table')->key('shenyi')->column('age')->value();	
		$this->load->view('cassandra', $age);

更多代码参考：

<?php
 
  require_once('SimpleCassie.php');
 
  $cassie = new SimpleCassie(HOST, PORT, TIMEOUT_MS);
 
 
  //failover support added since SimpleCassie 0.7.1.2 by:
  $cassie->addNode(HOST2, PORT2, TIMEOUT_MS);
  $cassie->addNode(HOST3, PORT3, TIMEOUT_MS);
 
  if(!$cassie->isConnected())
    throw new Exception('Couldn\'t connect to server');
 
  //checking active node - since SimpleCassie 0.7.1.2
  $activeNode = $cassie->getActiveNode();
 
  /*
  * setting working keyspace
  * @return - (false) on failure true on success
  * working keyspace can be change at any point by running ->keyspace() method
  */
   $cassie->keyspace('Keyspace1');
 
 
  /*
  * setting new column (and key if not exist)
  * @return - (false) on failure
  */
   $cassie->keyspace('MyApp')->cf('Users')->key('user1')->column('name')->set('Marcin');
   $cassie->cf('Users')->key('user1')->column('surname')->set('Rosinski');
   
  /*
  * setting in batches
  * @return - number of batches or false on failure
  */
   $cassie->cf('Users')->key('user1')->column('name')->batch('Marcin');
   $cassie->cf('Users')->key('user1')->column('surname')->batch('Rosinski');
 
   //batching deletion
   $cassie->cf('Users')->key('user1')->column('columntodrop')->batch();
 
   //commiting all above batches
   $cassie->batchCommit();
 
  /*
  * delete column or row/key
  * @return - (false) on failure
  */
 
  //deleting column
  $cassie->cf('Users')->key('user1')->column('name')->remove();
 
  //deleting row
  $cassie->cf('Users')->key('user1')->remove();
 
   /*
  * count number of columns in row/key
  * @return - (int) on succes, false on failure
  */
  $count = $cassie->cf('Users')->key('user2')->count();
 
  /*
  * count number of columns with predicate: from column to column
  * @return - (int) on succes, false on failure
  */
  $count = $cassie->cf('Users')->key('user2')->column('fromColumn','toColumn')->count();
 
/*
  * count number of columns with predicate: from column to column for multiple keys
  * @return - (int) on succes, false on failure
  */
  $count = $cassie->cf('Users')->key('user2','user3')->column('fromColumn','toColumn')->count();
 
  /*
  * getting single column
  * @return - object on succes,  null on failure
  */
  $name = $cassie->keyspace('Keyspace1')->cf('Standard1')->key('user1')->column('name')->get();
 
  /*
  * getting multiple columns
  * @return - array of objects on success, null on failure
  */
  $user = $cassie->cf('Standard1')->key('user1')->column('name','surname')->get();
 
/*
  * getting multiple column values
  * @return - array of objects on success, null on failure
  */
  $user = $cassie->cf('Standard1')->key('user1')->column('name','surname')->value();
 
  /*
  * getting single column from multiple rows/keys
  * @return - array of objects on succes,  null on failure
  */
  $users = $cassie->cf('Standard1')->key('user1','user2')->column('name')->get();
 
  /*
  * getting multiple columns from multiple rows/keys
  * @return - array of objects on succes,  null on failure
  */
  $users = $cassie->cf('Standard1')->key('user1','user2')->column('name','username')->get();
 
  /*
  * getting slice of columns from single row/key
  * @return - array of objects on succes,  null on failure
  */
  $limit = 10;
  $reversed = false;
  $from_name = 'Puma';
  $to_name = 'Tiger';
  $friends = $cassie->cf('Standard1')->key('user1friends')->column($from_name,$to_name)->slice($limit,$reversed);
 
  /*
  * getting slice of columns from single supercolumn row
  * @return - array of objects on succes,  null on failure
  */
  $limit = 10;
  $reversed = false;
  $friends = $cassie->cf('Standard1')->key('user1')->supercolumn('friends')->column($from_name,$to_name)->slice($limit,$reversed);
 
  //resetting supercolumn for future use - deprecated since SimpleCassie 0.7.1.3 - this process has been automated
  $cassie->key('user1')->supercolumn(null);
 
  /*
  * getting slice of columns from multiple rows/keys
  * @return - array of objects on succes,  null on failure
  */
  $limit = 10;
  $reversed = true;
  $friends = $cassie->cf('Standard1')->key('user1friends','user2friends')->column($from_name,$to_name)->slice($limit,$reversed);
 
  /*
  * increment column value
  * @return - (int) new value on succes, false on failure
  */
  $new_value = $cassie->cf('Standard1')->key('user1')->column('friends')->increment();
 
  /*
  * decrement column value
  * @return - (int) new value on succes, false on failure
  */
  $new_value = $cassie->cf('Standard1')->key('user1')->column('friends')->decrement();
 
 
  /*
  * Getting active keyspace
  */
  echo $cassie->keyspace();
 
  /*
   * Range support - since SimpleCassie 0.7.1.2
   */
  $range = $cassie->cf('MyColumnFamily')->key('fromKey','toKey')->column('fromColumn','toColumn')->range($keyCount,$columnCount);
 
  ?>

UUID Usage Examples：

<?php 
 
  //setting new uuid column
  $cassie->keyspace('MyApp')->cf('BlogPosts')->key('post')->column($cassie->uuid())->set('I like raw food.');
 
  //getting latest added post (assuming TimeUUIDType)
  $post = $cassie->cf('BlogPosts')->key('post')->slice(1);
 
  //getting post column uuid name in canonical form
  $uuid = $cassie->uuid($post->column->name);
 
  $string_form = (string) $uuid; //canonical form
  $binary_form = $uuid->uuid;
 
  ?>