1: <?php
2:
3: 4: 5: 6: 7: 8: 9: 10: 11:
12:
13:
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21: class NPgSqlDriver extends NObject implements ISupplementalDriver
22: {
23:
24: private $connection;
25:
26:
27:
28: public function __construct(NConnection $connection, array $options)
29: {
30: $this->connection = $connection;
31: }
32:
33:
34:
35:
36:
37:
38:
39: 40: 41:
42: public function delimite($name)
43: {
44:
45: return '"' . str_replace('"', '""', $name) . '"';
46: }
47:
48:
49:
50: 51: 52:
53: public function formatBool($value)
54: {
55: return $value ? 'TRUE' : 'FALSE';
56: }
57:
58:
59:
60: 61: 62:
63: public function formatDateTime(DateTime $value)
64: {
65: return $value->format("'Y-m-d H:i:s'");
66: }
67:
68:
69:
70: 71: 72:
73: public function formatLike($value, $pos)
74: {
75: $value = strtr($value, array("'" => "''", '\\' => '\\\\', '%' => '\\\\%', '_' => '\\\\_'));
76: return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
77: }
78:
79:
80:
81: 82: 83:
84: public function applyLimit(&$sql, $limit, $offset)
85: {
86: if ($limit >= 0) {
87: $sql .= ' LIMIT ' . (int) $limit;
88: }
89: if ($offset > 0) {
90: $sql .= ' OFFSET ' . (int) $offset;
91: }
92: }
93:
94:
95:
96: 97: 98:
99: public function normalizeRow($row, $statement)
100: {
101: return $row;
102: }
103:
104:
105:
106:
107:
108:
109:
110: 111: 112:
113: public function getTables()
114: {
115: $tables = array();
116: foreach ($this->connection->query("
117: SELECT
118: c.relname::varchar AS name,
119: c.relkind = 'v' AS view
120: FROM
121: pg_catalog.pg_class AS c
122: JOIN pg_catalog.pg_namespace AS n ON n.oid = c.relnamespace
123: WHERE
124: c.relkind IN ('r', 'v')
125: AND n.nspname = current_schema()
126: ORDER BY
127: c.relname
128: ") as $row) {
129: $tables[] = (array) $row;
130: }
131:
132: return $tables;
133: }
134:
135:
136:
137: 138: 139:
140: public function getColumns($table)
141: {
142: $columns = array();
143: foreach ($this->connection->query("
144: SELECT
145: a.attname::varchar AS name,
146: c.relname::varchar AS table,
147: upper(t.typname) AS nativetype,
148: NULL AS size,
149: FALSE AS unsigned,
150: NOT (a.attnotnull OR t.typtype = 'd' AND t.typnotnull) AS nullable,
151: ad.adsrc::varchar AS default,
152: coalesce(co.contype = 'p' AND strpos(ad.adsrc, 'nextval') = 1, FALSE) AS autoincrement,
153: coalesce(co.contype = 'p', FALSE) AS primary,
154: substring(ad.adsrc from 'nextval[(]''\"?([^''\"]+)') AS sequence
155: FROM
156: pg_catalog.pg_attribute AS a
157: JOIN pg_catalog.pg_class AS c ON a.attrelid = c.oid
158: JOIN pg_catalog.pg_namespace AS n ON n.oid = c.relnamespace
159: JOIN pg_catalog.pg_type AS t ON a.atttypid = t.oid
160: LEFT JOIN pg_catalog.pg_attrdef AS ad ON ad.adrelid = c.oid AND ad.adnum = a.attnum
161: LEFT JOIN pg_catalog.pg_constraint AS co ON co.connamespace = n.oid AND contype = 'p' AND co.conrelid = c.oid AND a.attnum = ANY(co.conkey)
162: WHERE
163: c.relkind IN ('r', 'v')
164: AND c.relname::varchar = {$this->connection->quote($table)}
165: AND n.nspname = current_schema()
166: AND a.attnum > 0
167: AND NOT a.attisdropped
168: ORDER BY
169: a.attnum
170: ") as $row) {
171: $column = (array) $row;
172: $column['vendor'] = $column;
173: unset($column['sequence']);
174:
175: $columns[] = $column;
176: }
177:
178: return $columns;
179: }
180:
181:
182:
183: 184: 185:
186: public function getIndexes($table)
187: {
188: $indexes = array();
189: foreach ($this->connection->query("
190: SELECT
191: c2.relname::varchar AS name,
192: i.indisunique AS unique,
193: i.indisprimary AS primary,
194: a.attname::varchar AS column
195: FROM
196: pg_catalog.pg_class AS c1
197: JOIN pg_catalog.pg_namespace AS n ON c1.relnamespace = n.oid
198: JOIN pg_catalog.pg_index AS i ON c1.oid = i.indrelid
199: JOIN pg_catalog.pg_class AS c2 ON i.indexrelid = c2.oid
200: LEFT JOIN pg_catalog.pg_attribute AS a ON c1.oid = a.attrelid AND a.attnum = ANY(i.indkey)
201: WHERE
202: n.nspname = current_schema()
203: AND c1.relkind = 'r'
204: AND c1.relname = {$this->connection->quote($table)}
205: ") as $row) {
206: $indexes[$row['name']]['name'] = $row['name'];
207: $indexes[$row['name']]['unique'] = $row['unique'];
208: $indexes[$row['name']]['primary'] = $row['primary'];
209: $indexes[$row['name']]['columns'][] = $row['column'];
210: }
211:
212: return array_values($indexes);
213: }
214:
215:
216:
217: 218: 219:
220: public function getForeignKeys($table)
221: {
222:
223: return $this->connection->query("
224: SELECT
225: co.conname::varchar AS name,
226: al.attname::varchar AS local,
227: cf.relname::varchar AS table,
228: af.attname::varchar AS foreign
229: FROM
230: pg_catalog.pg_constraint AS co
231: JOIN pg_catalog.pg_namespace AS n ON co.connamespace = n.oid
232: JOIN pg_catalog.pg_class AS cl ON co.conrelid = cl.oid
233: JOIN pg_catalog.pg_class AS cf ON co.confrelid = cf.oid
234: JOIN pg_catalog.pg_attribute AS al ON al.attrelid = cl.oid AND al.attnum = co.conkey[1]
235: JOIN pg_catalog.pg_attribute AS af ON af.attrelid = cf.oid AND af.attnum = co.confkey[1]
236: WHERE
237: n.nspname = current_schema()
238: AND co.contype = 'f'
239: AND cl.relname = {$this->connection->quote($table)}
240: ")->fetchAll();
241: }
242:
243:
244:
245: 246: 247:
248: public function isSupported($item)
249: {
250: return $item === self::SUPPORT_COLUMNS_META || $item === self::SUPPORT_SEQUENCE;
251: }
252:
253: }
254: