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<?php |
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namespace SteffenBrand\DmnDecisionTables\Validator; |
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use SteffenBrand\DmnDecisionTables\Constant\CollectOperator; |
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use SteffenBrand\DmnDecisionTables\Constant\ExpressionLanguage; |
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use SteffenBrand\DmnDecisionTables\Constant\HitPolicy; |
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use SteffenBrand\DmnDecisionTables\Constant\VariableType; |
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use SteffenBrand\DmnDecisionTables\DecisionTableBuilderInterface; |
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use SteffenBrand\DmnDecisionTables\Model\Rule; |
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/** |
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* Class DecisionTableValidator |
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* @package SteffenBrand\DmnDecisionTables\Validator |
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*/ |
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class DecisionTableValidator implements DecisionTableValidatorInterface |
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{ |
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/** |
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* @var bool |
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*/ |
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private $valid; |
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/** |
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* @var array |
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*/ |
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private $errors; |
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/** |
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* @var DecisionTableBuilderInterface |
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*/ |
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private $builder; |
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/** |
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* DmnTableValidator constructor. |
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* @param DecisionTableBuilderInterface $builder |
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*/ |
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public function __construct($builder) |
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{ |
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$this->valid = false; |
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$this->errors = []; |
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$this->builder = $builder; |
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} |
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/** |
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* Validates a DecisionTableBuilder instance. |
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* |
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* @return DecisionTableValidator |
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*/ |
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public function validate() |
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{ |
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$this->validateName(); |
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$this->validateDefinitionKey(); |
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$this->validateHitPolicy(); |
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$this->validateInputs(); |
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$this->validateOutputs(); |
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$this->validateRules(); |
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if (empty($this->errors) === true) { |
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$this->valid = true; |
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} |
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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 isValid() |
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{ |
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return $this->valid; |
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} |
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/** |
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* @return array |
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*/ |
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public function getErrors() |
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{ |
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return $this->errors; |
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} |
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/** |
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* @return void |
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*/ |
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private function validateName() |
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{ |
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if (empty($this->builder->getName()) === true) { |
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$this->errors[] = 'name of decision table is required'; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function validateDefinitionKey() |
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{ |
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if (empty($this->builder->getDefinitionKey()) === true) { |
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$this->errors[] = 'definition key of decision table is required'; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function validateHitPolicy() |
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{ |
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if (empty($this->builder->getHitPolicy()) === true) { |
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$this->errors[] = 'hit policy of decision table is required'; |
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} else if (in_array($this->builder->getHitPolicy(), HitPolicy::ALLOWED_HIT_POLICIES) === false) { |
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$this->errors[] = sprintf( |
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'hit policy of decision table must be one of: %s', |
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implode(', ', HitPolicy::ALLOWED_HIT_POLICIES) |
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); |
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} |
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if (HitPolicy::COLLECT_POLICY === $this->builder->getHitPolicy() && |
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empty($this->builder->getCollectOperator()) === true) |
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{ |
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$this->errors[] = 'hit policy COLLECT requires a collect operator.'; |
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} else if (HitPolicy::COLLECT_POLICY === $this->builder->getHitPolicy() && |
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in_array($this->builder->getCollectOperator(), CollectOperator::ALLOWED_COLLECT_OPERATORS) === false) |
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{ |
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$this->errors[] = sprintf( |
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'collect operator must be one of: %s', |
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implode(', ', CollectOperator::ALLOWED_COLLECT_OPERATORS) |
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); |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function validateInputs() |
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{ |
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if (empty($this->builder->getInputs()) === true) { |
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$this->errors[] = 'at least one input is required'; |
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return; |
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} |
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$i = 1; |
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foreach ($this->builder->getInputs() as $input) { |
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if (empty($input->getLabel()) === true) { |
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$this->errors[] = sprintf('input no. %s: label is required', (string) $i); |
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} |
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if (empty($input->getName()) === true) { |
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$this->errors[] = sprintf('input no. %s: name is required', (string) $i); |
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} |
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if (empty($input->getType()) === true) { |
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$this->errors[] = sprintf('input no. %s: type is required', (string) $i); |
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} else if (in_array($input->getType(), VariableType::ALLOWED_VARIABLE_TYPES) === false) { |
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$this->errors[] = sprintf( |
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'input no. %s: type must be one of: %s', |
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(string) $i, |
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implode(', ', VariableType::ALLOWED_VARIABLE_TYPES) |
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); |
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} |
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$i++; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function validateOutputs() |
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{ |
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if (empty($this->builder->getOutputs()) === true) { |
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$this->errors[] = 'at least one output is required'; |
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return; |
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} |
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$i = 1; |
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foreach ($this->builder->getOutputs() as $output) { |
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if (empty($output->getLabel()) === true) { |
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$this->errors[] = sprintf('output no. %s: label is required', (string) $i); |
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} |
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if (empty($output->getName()) === true) { |
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$this->errors[] = sprintf('output no. %s: name is required', (string) $i); |
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} |
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if (empty($output->getType()) === true) { |
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$this->errors[] = sprintf('output no. %s: type is required', (string) $i); |
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} else if (in_array($output->getType(), VariableType::ALLOWED_VARIABLE_TYPES) === false) { |
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$this->errors[] = sprintf( |
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'output no. %s: type must be one of: %s', |
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(string) $i, |
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implode(', ', VariableType::ALLOWED_VARIABLE_TYPES) |
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); |
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} |
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$i++; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function validateRules() |
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{ |
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if (empty($this->builder->getRules()) === true) { |
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return; |
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} |
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$i = 1; |
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foreach ($this->builder->getRules() as $rule) { |
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$this->validateInputEntries($rule, $i); |
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$i++; |
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} |
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$i = 1; |
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foreach ($this->builder->getRules() as $rule) { |
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$this->validateOutputEntries($rule, $i); |
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$i++; |
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} |
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} |
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/** |
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* @param Rule $rule |
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* @param $i |
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* @return void |
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*/ |
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private function validateInputEntries($rule, $i) |
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{ |
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if (empty($rule->getInputEntries()) === true) { |
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$this->errors[] = sprintf('rule no. %s: at least one input entry is required', (string) $i); |
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return; |
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} |
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$k = 1; |
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foreach ($rule->getInputEntries() as $inputEntry) { |
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if (empty($inputEntry->getExpressionLanguage()) === true) { |
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$this->errors[] = sprintf( |
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'rule no. %s, input entry no. %s: expression language is required', |
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(string) $i, |
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(string) $k |
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); |
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} else if (in_array($inputEntry->getExpressionLanguage(), ExpressionLanguage::ALLOWED_EXPRESSION_LANGUAGES) === false) { |
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$this->errors[] = sprintf( |
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'rule no. %s, input entry no. %s: expression language must be one of: %s', |
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(string) $i, |
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(string) $k, |
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implode(', ', ExpressionLanguage::ALLOWED_EXPRESSION_LANGUAGES) |
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); |
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} |
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$k++; |
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} |
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} |
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/** |
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* @param Rule $rule |
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* @param $i |
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* @return void |
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*/ |
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private function validateOutputEntries($rule, $i) |
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{ |
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if (empty($rule->getOutputEntries()) === true) { |
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$this->errors[] = sprintf('rule no. %s: at least one output entry is required', (string) $i); |
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return; |
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} |
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$k = 1; |
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foreach ($rule->getOutputEntries() as $outputEntry) { |
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if (empty($outputEntry->getExpressionLanguage()) === true) { |
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$this->errors[] = sprintf( |
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'rule no. %s, output entry no. %s: expression language is required', |
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(string) $i, |
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(string) $k |
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); |
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} else if (in_array($outputEntry->getExpressionLanguage(), ExpressionLanguage::ALLOWED_EXPRESSION_LANGUAGES) === false) { |
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$this->errors[] = sprintf( |
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'rule no. %s, output entry no. %s: expression language must be one of: %s', |
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(string) $i, |
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(string) $k, |
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implode(', ', ExpressionLanguage::ALLOWED_EXPRESSION_LANGUAGES) |
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); |
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} |
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$k++; |
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} |
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} |
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} |