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| 1 | <?php |
| 2 | |
| 3 | namespace BO\Zmsbackend\Query\Builder; |
| 4 | |
| 5 | use BO\Zmsbackend\Query\Builder\Dialect\ANSI; |
| 6 | |
| 7 | /** |
| 8 | * Query |
| 9 | * |
| 10 | * Base Query class that all other query types should inherit from. |
| 11 | * |
| 12 | * Fluent APIs live on Select/Insert/Update/Delete (and their traits). |
| 13 | * Psalm sees Query\Base::$query as this abstract type; referencedMethod |
| 14 | * suppresses in psalm.xml cover those subclass methods (no circular @mixin). |
| 15 | * |
| 16 | * @package BO\Zmsbackend\Query\Builder |
| 17 | * @author Alex Gisby<alex@solution10.com> |
| 18 | * @license MIT |
| 19 | */ |
| 20 | abstract class Query |
| 21 | { |
| 22 | /** |
| 23 | * @var DialectInterface |
| 24 | */ |
| 25 | protected $dialect; |
| 26 | |
| 27 | /** |
| 28 | * @var string The base part of the query (SELECT, INSERT etc) |
| 29 | */ |
| 30 | protected $queryBase = null; |
| 31 | |
| 32 | /** |
| 33 | * @var array Flags for this query |
| 34 | */ |
| 35 | protected $flags = []; |
| 36 | |
| 37 | /** |
| 38 | * Pass in a dialect, otherwise it'll assume ANSI SQL. |
| 39 | * |
| 40 | * @param DialectInterface|null $dialect |
| 41 | */ |
| 42 | public function __construct(DialectInterface $dialect = null) |
| 43 | { |
| 44 | $this->dialect = ($dialect === null) ? new ANSI() : $dialect; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Gets/sets the query base for this query. |
| 49 | * Note: This will NOT be escaped in any way! Be super careful what you pass. |
| 50 | * |
| 51 | * @param null|string $base Null to get, string to set |
| 52 | * @return string|$this String on get, $this on set |
| 53 | */ |
| 54 | public function queryBaseStatement($base = null) |
| 55 | { |
| 56 | if ($base === null) { |
| 57 | return $this->queryBase; |
| 58 | } |
| 59 | $this->queryBase = $base; |
| 60 | return $this; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Get/set the dialect in use for this query. |
| 65 | * |
| 66 | * @param null|DialectInterface $dialect Null to get, DialectInterface to set |
| 67 | * @return DialectInterface|$this DialectInterface on get, $this on set. |
| 68 | */ |
| 69 | public function dialect(DialectInterface $dialect = null) |
| 70 | { |
| 71 | if ($dialect === null) { |
| 72 | return $this->dialect; |
| 73 | } |
| 74 | $this->dialect = $dialect; |
| 75 | return $this; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Get/Set a flag for the query. Flags are any metadata that you want passed around with |
| 80 | * the query, but not necessarily used within the generation of the SQL. For example you |
| 81 | * might put a cache TTL in there, or some engine specific flag for your database adapter |
| 82 | * to later read and use. |
| 83 | * |
| 84 | * Any type can be used as the flag value. |
| 85 | * |
| 86 | * @param string $flag Name of the flag |
| 87 | * @param null|mixed $value Null to get the flag, mixed to set it |
| 88 | * @return mixed|$this Flag value on read (null for not set), or $this on set. |
| 89 | */ |
| 90 | public function flag($flag, $value = null) |
| 91 | { |
| 92 | if ($value === null) { |
| 93 | return (array_key_exists($flag, $this->flags)) ? $this->flags[$flag] : null; |
| 94 | } |
| 95 | $this->flags[$flag] = $value; |
| 96 | return $this; |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Gets/Sets multiple flags for the query. Get returns all flags as a key => value array. |
| 101 | * Set accepts a key => value array. |
| 102 | * |
| 103 | * @param null|array $flags Null for get, array for set |
| 104 | * @return array|$this array on get, $this on set |
| 105 | * @see Query::flag() for more info on flags. |
| 106 | */ |
| 107 | public function flags(array $flags = null) |
| 108 | { |
| 109 | if (!is_array($flags)) { |
| 110 | return $this->flags; |
| 111 | } |
| 112 | foreach ($flags as $f => $v) { |
| 113 | $this->flags[$f] = $v; |
| 114 | } |
| 115 | return $this; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Deletes a flag from the query. |
| 120 | * |
| 121 | * @param string $flag Name of the flag |
| 122 | * @return $this |
| 123 | */ |
| 124 | public function deleteFlag($flag) |
| 125 | { |
| 126 | unset($this->flags[$flag]); |
| 127 | return $this; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Generates the full SQL statement for this query with all the composite parts. |
| 132 | * |
| 133 | * @return string |
| 134 | */ |
| 135 | abstract public function sql(); |
| 136 | |
| 137 | /** |
| 138 | * Serves as a shortcut for sql() |
| 139 | * |
| 140 | * @return string |
| 141 | */ |
| 142 | public function __toString() |
| 143 | { |
| 144 | return $this->sql(); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Returns all the parameters, in the correct order, to pass into PDO. |
| 149 | * |
| 150 | * @return array |
| 151 | */ |
| 152 | abstract public function params(); |
| 153 | |
| 154 | /** |
| 155 | * Resets the entire query. |
| 156 | * |
| 157 | * @return $this |
| 158 | */ |
| 159 | abstract public function reset(); |
| 160 | |
| 161 | /** |
| 162 | * Returns all the tables that this query makes mention of, in FROMs and JOINs |
| 163 | * |
| 164 | * @return array |
| 165 | */ |
| 166 | abstract public function allTablesReferenced(); |
| 167 | } |