ConjunctionValidator.php

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<?php
namespace TYPO3\CMS\Extbase\Validation\Validator;

class ConjunctionValidator extends AbstractCompositeValidator {

    public function validate($value) {
        $validators = $this->getValidators();
        if ($validators->count() > 0) {
            $result = NULL;
            foreach ($validators as $validator) {
                if ($result === NULL) {
                    $result = $validator->validate($value);
                } else {
                    $result->merge($validator->validate($value));
                }
            }
        } else {
            $result = new \TYPO3\CMS\Extbase\Error\Result;
        }

        return $result;
    }

    public function isValid($value) {
        $result = TRUE;
        foreach ($this->validators as $validator) {
            if ($validator->isValid($value) === FALSE) {
                $this->errors = array_merge($this->errors, $validator->getErrors());
                $result = FALSE;
            }
        }
        return $result;
    }
}