<?php
namespace FluentForm\Framework\Database\Query;
use InvalidArgumentException;
use FluentForm\Framework\Database\Query\Expression;
class JsonExpression extends Expression
{
/**
* The value of the expression.
*
* @var mixed
*/
protected $value;
/**
* Create a new raw query expression.
*
* @param mixed $value
* @return void
*/
public function __construct($value)
{
$this->value = $this->getJsonBindingParameter($value);
}
/**
* Translate the given value into the appropriate JSON binding parameter.
*
* @param mixed $value
* @return string
*/
protected function getJsonBindingParameter($value)
{
switch ($type = gettype($value)) {
case 'boolean':
return $value ? 'true' : 'false';
case 'integer':
case 'double':
return $value;
case 'string':
return '?';
case 'object':
case 'array':
return '?';
}
throw new InvalidArgumentException('JSON value is of illegal type: '.$type);
}
/**
* Get the value of the expression.
*
* @return mixed
*/
public function getValue()
{
return $this->value;
}
/**
* Get the value of the expression.
*
* @return string
*/
public function __toString()
{
return (string) $this->getValue();
}
}