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<?php |
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/** |
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* Class DbSqlLiteral |
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*/ |
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class DbSqlLiteral extends DbSqlAware { |
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const SQL_LITERAL_ALIAS_NONE = null; |
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const SQL_LITERAL_ALIAS_AUTO = ''; |
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/** |
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* ALWAYS STRING! |
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* |
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* @var string $literal |
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*/ |
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public $literal = ''; |
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/** |
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* DbSqlLiteral constructor. |
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* |
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* @param db_mysql|null $db |
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* @param string $literal |
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*/ |
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public function __construct($db = null, $literal = '') { |
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parent::__construct($db); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return $this |
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*/ |
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public function literal($value) { |
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$this->literal = (string)$value; |
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return $this; |
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} |
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// |
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// public static function __callStatic($name, $arguments) { |
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// // method_exists(get_called_class(), $name) |
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// return call_user_func_array(array(static::build(), '_' .$name), $arguments); |
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// } |
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/** |
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* Renders single argument function |
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* - supports autobuild alias |
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* - supports direct alias |
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* - supports dotted field names like 'table.field' |
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* - supports all fields with '*' and 'table.*' |
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* |
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* @param string $functionName |
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* @param string $field |
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* - '*' - all fields |
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* - string - quoted as field name |
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* @param null|string $alias |
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* - DbSqlLiteral::SQL_LITERAL_ALIAS_NONE: no alias |
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* - DbSqlLiteral::SQL_LITERAL_ALIAS_AUTO: alias from $field |
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* - other value: using supplied alias |
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* |
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* @return $this |
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*/ |
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public function buildSingleArgument($functionName, $field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
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if ($alias === self::SQL_LITERAL_ALIAS_AUTO) { |
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$alias = $this->aliasFromField($functionName, $field); |
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} |
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$this->literal = strtoupper($functionName) . '(' . $this->quoteField($field) . ')'; |
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if (self::SQL_LITERAL_ALIAS_NONE !== $alias && !empty($alias)) { |
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$this->literal .= ' AS `' . $alias . '`'; |
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} |
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return $this; |
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} |
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/** |
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* @param string $field |
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* @param null|string $alias |
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* |
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* @return static |
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* |
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* @see buildSingleArgument |
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*/ |
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public function max($field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
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return $this->buildSingleArgument('max', $field, $alias); |
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} |
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/** |
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* @param string $field |
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* @param null|string $alias |
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* |
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* @return $this |
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* |
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* @see buildSingleArgument |
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*/ |
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public function count($field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
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return $this->buildSingleArgument('count', $field, $alias); |
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} |
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/** |
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* @param string $field |
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* @param null|string $alias |
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* |
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* @return $this |
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* |
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* @see buildSingleArgument |
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*/ |
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public function sum($field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
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return $this->buildSingleArgument('sum', $field, $alias); |
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} |
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/** |
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* @param string $field |
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* @param null|string $alias |
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* |
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* @return $this |
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* |
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* @see buildSingleArgument |
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*/ |
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public function isNull($field = '*', $alias = self::SQL_LITERAL_ALIAS_NONE) { |
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$functionName = 'isNull'; |
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if ($alias === self::SQL_LITERAL_ALIAS_AUTO) { |
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$alias = $this->aliasFromField($functionName, $field); |
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} |
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$this->literal = $this->quoteField($field) . ' IS NULL'; |
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if (!empty($alias)) { |
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$this->literal .= ' AS `' . $alias . '`'; |
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} |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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12 |
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public function __toString() { |
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return $this->literal; |
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} |
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} |
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supernova-ws /
SuperNova
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.