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
<?php
/*
* $Id: From.php 1080 2007-02-10 18:17:08Z romanb $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
/**
* Doctrine_Query_Check
*
* @package Doctrine
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision: 1080 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Query_Check
{
/**
* @var Doctrine_Table $table Doctrine_Table object
*/
protected $table;
/**
* @var string $sql database specific sql CHECK constraint definition
* parsed from the given dql CHECK definition
*/
protected $sql;
/**
* @param Doctrine_Table|string $table Doctrine_Table object
*/
public function __construct($table)
{
if ( ! ($table instanceof Doctrine_Table)) {
$table = Doctrine_Manager::getInstance()
->getCurrentConnection()
->getTable($table);
}
$this->table = $table;
}
/**
* getTable
* returns the table object associated with this object
*
* @return Doctrine_Connection
*/
public function getTable()
{
return $this->table;
}
/**
* parse
*
* @param string $dql DQL CHECK constraint definition
* @return string
*/
public function parse($dql)
{
$this->sql = $this->parseClause($dql);
}
/**
* parseClause
*
* @param string $alias component alias
* @param string $field the field name
* @param mixed $value the value of the field
* @return void
*/
public function parseClause($dql)
{
$parts = Doctrine_Tokenizer::sqlExplode($dql, ' AND ');
if (count($parts) > 1) {
$ret = array();
foreach ($parts as $part) {
$ret[] = $this->parseSingle($part);
}
$r = implode(' AND ', $ret);
} else {
$parts = Doctrine_Tokenizer::quoteExplode($dql, ' OR ');
if (count($parts) > 1) {
$ret = array();
foreach ($parts as $part) {
$ret[] = $this->parseClause($part);
}
$r = implode(' OR ', $ret);
} else {
$ret = $this->parseSingle($dql);
return $ret;
}
}
return '(' . $r . ')';
}
public function parseSingle($part)
{
$e = explode(' ', $part);
$e[0] = $this->parseFunction($e[0]);
switch ($e[1]) {
case '>':
case '<':
case '=':
case '!=':
case '<>':
break;
default:
throw new Doctrine_Query_Exception('Unknown operator ' . $e[1]);
}
return implode(' ', $e);
}
public function parseFunction($dql)
{
if (($pos = strpos($dql, '(')) !== false) {
$func = substr($dql, 0, $pos);
$value = substr($dql, ($pos + 1), -1);
$expr = $this->table->getConnection()->expression;
if ( ! method_exists($expr, $func)) {
throw new Doctrine_Query_Exception('Unknown function ' . $func);
}
$func = $expr->$func($value);
}
return $func;
}
/**
* getSql
*
* returns database specific sql CHECK constraint definition
* parsed from the given dql CHECK definition
*
* @return string
*/
public function getSql()
{
return $this->sql;
}
}