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<?php |
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namespace mindplay\sql\model; |
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use mindplay\sql\framework\Executable; |
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use mindplay\sql\framework\Statement; |
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use mindplay\sql\framework\TypeProvider; |
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/** |
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* Abstract base-class for all types of SQL query models. |
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*/ |
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abstract class Query implements Executable |
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{ |
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/** |
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* @var TypeProvider |
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*/ |
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protected $types; |
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/** |
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* @var array map where placeholder name => mixed value types |
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*/ |
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private $params = []; |
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/** |
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* @var Type[] map where placeholder name => Type instance |
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*/ |
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private $param_types = []; |
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/** |
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* @param TypeProvider $types |
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*/ |
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public function __construct(TypeProvider $types) |
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{ |
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$this->types = $types; |
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} |
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/** |
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* Bind an individual placeholder name to a given value. |
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* |
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* The `$type` argument is optional for scalar types (string, int, float, bool, null) and arrays of scalar values. |
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* |
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* @param string $name placeholder name |
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* @param mixed $value |
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* @param Type|string|null $type Type instance, or Type class-name (or NULL for scalar types) |
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* |
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* @return $this |
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*/ |
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public function bind($name, $value, $type = null) |
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{ |
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$this->params[$name] = $value; |
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$this->param_types[$name] = is_string($type) |
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? $this->types->getType($type) |
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: $type; // assumes Type instance (or NULL) |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getParams() |
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{ |
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$params = []; |
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foreach ($this->params as $name => $value) { |
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$params[$name] = isset($this->param_types[$name]) |
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? $this->param_types[$name]->convertToSQL($value) |
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: $value; // assume scalar value (or array of scalar values) |
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} |
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return $params; |
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} |
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/** |
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* Internally creates a full Type-map for all Columns in a given Table |
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* |
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* @param Table $table |
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* |
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* @return Type[] map where Column Alias maps to Type |
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*/ |
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protected function createTypeMap(Table $table) |
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{ |
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$type_map = []; |
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foreach ($table->listColumns() as $column) { |
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$type_map[$column->getAlias() ?: $column->getName()] = $column->getType(); |
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} |
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return $type_map; |
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} |
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} |
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mindplay-dk /
sql
