added JSON support [Closes #269]

src/Dibi/Helpers.php

@@ -189,6 +189,7 @@ class Helpers
 			'TIME' => Type::DATETIME, // DATETIME, TIMESTAMP
 			'DATE' => Type::DATE,
 			'BOOL' => Type::BOOL,
+			'JSON' => Type::JSON,
 		];
 
 		foreach ($patterns as $s => $val) {

src/Dibi/Result.php

@@ -495,6 +495,9 @@ class Result implements IDataSource
 
 			} elseif ($type === Type::BINARY) {
 				$row[$key] = $this->getResultDriver()->unescapeBinary($value);
+
+			} elseif ($type === Type::JSON) {
+				$row[$key] = json_decode($value);
 			}
 		}
 	}

src/Dibi/Type.php

@@ -18,6 +18,7 @@ class Type
 	public const
 		TEXT = 's', // as 'string'
 		BINARY = 'bin',
+		JSON = 'json',
 		BOOL = 'b',
 		INTEGER = 'i',
 		FLOAT = 'f',