# Coverage for Doctrine_Query_Where

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1 | <?php
2 | /*
3 | * $Id: Where.php 3212 2007-11-24 18:58:33Z romanb $
4 | *
5 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
6 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
7 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
8 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
9 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
10 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
11 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
12 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
13 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
14 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
15 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
16 | *
17 | * This software consists of voluntary contributions made by many individuals
18 | * and is licensed under the LGPL. For more information, see
19 | * <http://www.phpdoctrine.org>.
20 | */
21 | Doctrine::autoload('Doctrine_Query_Condition');
22 | /**
23 | * Doctrine_Query_Where
24 | *
25 | * @package Doctrine
26 | * @subpackage Query
27 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL
28 | * @link www.phpdoctrine.org
29 | * @since 1.0
30 | * @version $Revision: 3212 $
31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi>
32 | */
33 | class Doctrine_Query_Where extends Doctrine_Query_Condition
34 | {
35 | public function load($where)
36 | {
37 | $where = $this->_tokenizer->bracketTrim(trim($where));
38 | $conn = $this->query->getConnection();
39 | $terms = $this->_tokenizer->sqlExplode($where);
40 |
41 | if (count($terms) > 1) {
42 | if (substr($where, 0, 6) == 'EXISTS') {
43 | return $this->parseExists($where, true);
44 | } elseif (substr($where, 0, 10) == 'NOT EXISTS') {
45 | return $this->parseExists($where, false);
46 | }
47 | }
48 |
49 | if (count($terms) < 3) {
50 | $terms = $this->_tokenizer->sqlExplode($where, array('=', '<', '<>', '>', '!='));
51 | }
52 |
53 | if (count($terms) > 1) {
54 | $first = array_shift($terms);
55 | $value = array_pop($terms);
56 | $operator = trim(substr($where, strlen($first), -strlen($value)));
57 | $table = null;
58 | $field = null;
59 |
60 | if (strpos($first, "'") === false && strpos($first, '(') === false) {
61 | // normal field reference found
62 | $a = explode('.', $first);
63 |
64 | $field = array_pop($a);
65 | $reference = implode('.', $a);
66 |
67 | if (empty($reference)) {
68 | $map = $this->query->getRootDeclaration();
69 |
70 | $alias = $this->query->getTableAlias($this->query->getRootAlias());
71 | $table = $map['table'];
72 | } else {
73 | $map = $this->query->load($reference, false);
74 |
75 | $alias = $this->query->getTableAlias($reference);
76 | $table = $map['table'];
77 | }
78 | }
79 | $first = $this->query->parseClause($first);
80 |
81 | $sql = $first . ' ' . $operator . ' ' . $this->parseValue($value, $table, $field);
82 |
83 | return $sql;
84 | } else {
85 |
86 | }
87 | }
88 |
89 | public function parseValue($value, Doctrine_Table $table = null, $field = null)
90 | {
91 | if (substr($value, 0, 1) == '(') {
92 | // trim brackets
93 | $trimmed = $this->_tokenizer->bracketTrim($value);
94 |
95 | if (substr($trimmed, 0, 4) == 'FROM' ||
96 | substr($trimmed, 0, 6) == 'SELECT') {
97 |
98 | // subquery found
99 | $q = new Doctrine_Query();
100 | $value = '(' . $this->query->createSubquery()->parseQuery($trimmed, false)->getQuery() . ')';
101 |
102 | } elseif (substr($trimmed, 0, 4) == 'SQL:') {
103 | $value = '(' . substr($trimmed, 4) . ')';
104 | } else {
105 | // simple in expression found
106 | $e = $this->_tokenizer->sqlExplode($trimmed, ',');
107 |
108 | $value = array();
109 |
110 | $index = false;
111 |
112 | foreach ($e as $part) {
113 | if (isset($table) && isset($field)) {
114 | $index = $table->enumIndex($field, trim($part, "'"));
115 | }
116 |
117 | if ($index !== false) {
118 | $value[] = $index;
119 | } else {
120 | $value[] = $this->parseLiteralValue($part);
121 | }
122 | }
123 |
124 | $value = '(' . implode(', ', $value) . ')';
125 | }
126 | } else if (substr($value, 0, 1) == ':' || $value === '?') {
127 | // placeholder found
128 | if (isset($table) && isset($field) && $table->getTypeOf($field) == 'enum') {
129 | $this->query->addEnumParam($value, $table, $field);
130 | } else {
131 | $this->query->addEnumParam($value, null, null);
132 | }
133 | } else {
134 | $enumIndex = false;
135 | if (isset($table) && isset($field)) {
136 | // check if value is enumerated value
137 | $enumIndex = $table->enumIndex($field, trim($value, "'"));
138 | }
139 |
140 | if ($enumIndex !== false) {
141 | $value = $enumIndex;
142 | } else {
143 | $value = $this->parseLiteralValue($value);
144 | }
145 | }
146 | return $value;
147 | }
148 |
149 | /**
150 | * parses an EXISTS expression
151 | *
152 | * @param string $where query where part to be parsed
153 | * @param boolean $negation whether or not to use the NOT keyword
154 | * @return string
155 | */
156 | public function parseExists($where, $negation)
157 | {
158 | $operator = ($negation) ? 'EXISTS' : 'NOT EXISTS';
159 |
160 | $pos = strpos($where, '(');
161 |
162 | if ($pos == false) {
163 | throw new Doctrine_Query_Exception('Unknown expression, expected a subquery with () -marks');
164 | }
165 |
166 | $sub = $this->_tokenizer->bracketTrim(substr($where, $pos));
167 |
168 | return $operator . ' (' . $this->query->createSubquery()->parseQuery($sub, false)->getQuery() . ')';
169 | }
170 | }