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<?php |
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namespace JClaveau\LogicalFilter\Rule; |
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/** |
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* a <= x |
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*/ |
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class BelowOrEqualRule extends OrRule |
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{ |
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use Trait_RuleWithField; |
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/** @var string operator */ |
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const operator = '<='; |
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/** @var mixed maximum */ |
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protected $maximum; |
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/** |
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* @param string $field The field to apply the rule on. |
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* @param array $value The value the field can below to. |
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*/ |
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public function __construct($field, $maximum, array $options=[]) |
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{ |
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if (!empty($options)) { |
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$this->setOptions($options); |
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} |
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$this->field = $field; |
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$this->maximum = $maximum; |
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} |
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/** |
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* @return mixed The maximum for the field of this rule |
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*/ |
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public function getMaximum() |
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{ |
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return $this->maximum; |
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} |
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/** |
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* Defines the maximum of the current rule |
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* |
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* @param mixed $maximum |
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* @return BelowOrEqualRule $this |
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*/ |
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public function setMaximum($maximum) |
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{ |
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if ($maximum === null) { |
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throw new \InvalidArgumentException( |
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"The maximum of a below or equal rule cannot be null" |
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); |
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} |
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if ($this->maximum == $maximum) |
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return $this; |
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$this->maximum = $maximum; |
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$this->flushCache(); |
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return $this; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isNormalizationAllowed(array $contextual_options=[]) |
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{ |
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return $this->getOption('below_or_equal.normalization', $contextual_options); |
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} |
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/** |
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* @return array $operands |
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*/ |
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public function getOperands() |
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{ |
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if (! empty($this->cache['operands'])) { |
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return $this->cache['operands']; |
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} |
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$operands = [ |
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new BelowRule($this->field, $this->maximum), |
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new EqualRule($this->field, $this->maximum), |
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]; |
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return $this->cache['operands'] = $operands; |
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} |
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/** |
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* Set the maximum and the field of the current instance by giving |
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* an array of opereands as parameter. |
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* |
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* @param array $operands |
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* @return BelowOrEqualRule $this |
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*/ |
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public function setOperands(array $operands) |
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{ |
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foreach ($operands as $operand) { |
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if ($operand instanceof EqualRule) { |
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$equalRuleField = $operand->getField(); |
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$equalRuleValue = $operand->getValue(); |
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} |
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elseif ($operand instanceof BelowRule) { |
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$belowRuleField = $operand->getField(); |
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$belowRuleValue = $operand->getUpperLimit(); |
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} |
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} |
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if ( count($operands) != 2 |
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|| !isset($equalRuleValue) |
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|| !isset($belowRuleValue) |
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|| $belowRuleValue != $equalRuleValue |
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|| $belowRuleField != $equalRuleField |
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) { |
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throw new \InvalidArgumentException( |
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"Operands must be an array of two rules like (field < maximum || field = maximum) instead of:\n" |
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.var_export($operands, true) |
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); |
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} |
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$this->maximum = $belowRuleValue; |
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$this->field = $belowRuleField; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getValues() |
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{ |
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return $this->getMaximum(); |
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} |
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/** |
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* @param array $options + show_instance=false Display the operator of the rule or its instance id |
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* |
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* @return array |
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*/ |
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public function toArray(array $options=[]) |
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{ |
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$default_options = [ |
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'show_instance' => false, |
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]; |
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foreach ($default_options as $default_option => &$default_value) { |
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if (!isset($options[ $default_option ])) |
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$options[ $default_option ] = $default_value; |
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} |
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try { |
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// TODO replace this rule by a simple OrRule? |
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return [ |
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$this->getField(), |
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$options['show_instance'] ? $this->getInstanceId() : self::operator, |
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$this->getValues(), |
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]; |
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} |
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catch (\RuntimeException $e) { |
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return parent::toArray(); |
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} |
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} |
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/** |
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*/ |
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public function toString(array $options=[]) |
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{ |
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if (isset($this->cache['string'])) |
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return $this->cache['string']; |
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$operator = self::operator; |
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return $this->cache['string'] = "['{$this->getField()}', '$operator', " . var_export($this->getValues(), true). "]"; |
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} |
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/**/ |
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} |
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jclaveau /
php-logical-filter
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