summaryrefslogtreecommitdiff
path: root/framework/Data/ActiveRecord/TActiveRecordCriteria.php
blob: 533ff50a552b5238c8c61f1ce4a15c75179d7f42 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
<?php
/**
 * TActiveRecordCriteria class file.
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2007 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id$
 * @package System.Data.ActiveRecord
 */

/**
 * Search criteria for Active Record.
 *
 * Criteria object for active record finder methods. Usage:
 * <code>
 * $criteria = new TActiveRecordCriteria;
 * $criteria->Condition = 'username = :name AND password = :pass';
 * $criteria->Parameters[':name'] = 'admin';
 * $criteria->Parameters[':pass'] = 'prado';
 * $criteria->OrdersBy['level'] = 'desc';
 * $criteria->OrdersBy['name'] = 'asc';
 * $criteria->Limit = 10;
 * $criteria->Offset = 20;
 * </code>
 *
 * @author Wei Zhuo <weizho[at]gmail[dot]com>
 * @version $Id$
 * @package System.Data.ActiveRecord
 * @since 3.1
 */
class TActiveRecordCriteria extends TComponent
{
	private $_condition;
	private $_parameters;
	private $_ordersBy;
	private $_limit;
	private $_offset;

	/**
	 * Creates a new criteria with given condition;
	 * @param string sql string after the WHERE stanza
	 * @param mixed named or indexed parameters, accepts as multiple arguments.
	 */
	public function __construct($condition=null,$parameters=array())
	{
		if(!is_array($parameters) && func_num_args() > 2)
		{
			$parameters = func_get_args();
			array_shift($parameters);
		}
		$this->setCondition($condition);
		$this->_parameters=new TAttributeCollection((array)$parameters);
		$this->_ordersBy=new TAttributeCollection;
	}

	/**
	 * @return TAttributeCollection list of named parameters and values.
	 */
	public function getParameters()
	{
		return $this->_parameters;
	}

	/**
	 * @param ArrayAccess named parameters.
	 */
	public function setParameters($value)
	{
		if(!(is_array($value) || $value instanceof ArrayAccess))
			throw new TException('value must be array or ArrayAccess');
		$this->_parameters->copyFrom($value);
	}

	/**
	 * @return boolean true if the parameter index are string base, false otherwise.
	 */
	public function getIsNamedParameters()
	{
		foreach($this->getParameters() as $k=>$v)
			return is_string($k);
	}

	/**
	 * @return TAttributeCollection ordering clause.
	 */
	public function getOrdersBy()
	{
		return $this->_ordersBy;
	}

	/**
	 * @param ArrayAccess ordering clause.
	 */
	public function setOrdersBy($value)
	{
		if(!(is_array($value) || $value instanceof ArrayAccess))
			throw new TException('value must be array or ArrayAccess');
		$this->_ordersBy->copyFrom($value);
	}

	/**
	 * @return string search conditions.
	 */
	public function getCondition()
	{
		return $this->_condition;
	}

	/**
	 * Sets the search conditions to be placed after the WHERE clause in the SQL.
	 * @param string search conditions.
	 */
	public function setCondition($value)
	{
		$this->_condition=$value;
	}

	/**
	 * @return int maximum number of records to return.
	 */
	public function getLimit()
	{
		return $this->_limit;
	}

	/**
	 * @param int maximum number of records to return.
	 */
	public function setLimit($value)
	{
		$this->_limit=$value;
	}

	/**
	 * @return int record offset.
	 */
	public function getOffset()
	{
		return $this->_offset;
	}

	/**
	 * @param int record offset.
	 */
	public function setOffset($value)
	{
		$this->_offset=$value;
	}

	/**
	 * @return string string representation of the criteria. Useful for debugging.
	 */
	public function __toString()
	{
		$str = '';
		if(strlen((string)$this->getCondition()) > 0)
			$str .= '"'.(string)$this->getCondition().'"';
		$params = array();
		foreach($this->getParameters() as $k=>$v)
			$params[] = "{$k} => ${v}";
		if(count($params) > 0)
			$str .= ', "'.implode(', ',$params).'"';
		$orders = array();
		foreach($this->getOrdersBy() as $k=>$v)
			$orders[] = "{$k} => ${v}";
		if(count($orders) > 0)
			$str .= ', "'.implode(', ',$orders).'"';
		if($this->_limit !==null)
			$str .= ', '.$this->_limit;
		if($this->_offset !== null)
			$str .= ', '.$this->_offset;
		return $str;
	}
}

?>