115 lines
3.4 KiB
PHP
115 lines
3.4 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2015 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*/
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namespace oat\taoTests\models\pack;
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use \core_kernel_classes_Resource;
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use \taoTests_models_classes_TestsService;
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use \common_exception_NoImplementation;
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use \ReflectionClass;
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use \common_Exception;
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use \Exception;
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/**
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* The Test Packer calls the packable class for the given test
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*
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* @package taoTests
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* @author Bertrand Chevrier <bertrand@taotesting.com>
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*/
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class Packer
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{
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/**
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* The test to pack
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* @var core_kernel_classes_Resource
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*/
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private $test;
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/**
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* The test service
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* @var \taoTests_models_classes_TestsService
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*/
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private $testService;
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/**
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* Create a packer for a test
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* @param core_kernel_classes_Resource $test
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*/
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public function __construct(core_kernel_classes_Resource $test)
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{
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$this->test = $test;
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$this->testService = taoTests_models_classes_TestsService::singleton();
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}
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/**
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* Get the packer for the test regarding it's implementation.
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*
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* @return Packable the test packer implementation
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* @throws common_exception_NoImplementation
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*/
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private function getTestPacker()
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{
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//look at the item model
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$testModel = $this->testService->getTestModel($this->test);
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if (is_null($testModel)) {
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throw new common_exception_NoImplementation('No test model for test ' . $this->test->getUri());
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}
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//get the testModel implementation for this model
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$impl = $this->testService->getTestModelImplementation($testModel);
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if (is_null($impl)) {
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throw new common_exception_NoImplementation('No implementation for model ' . $testModel->getUri());
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}
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//then retrieve the packer class and instantiate it
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$packerClass = new ReflectionClass($impl->getPackerClass());
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if (is_null($packerClass) || !$packerClass->implementsInterface('oat\taoTests\models\pack\Packable')) {
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throw new common_exception_NoImplementation('The packer class seems to be not implemented');
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}
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return $packerClass->newInstance();
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}
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/**
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* Pack a test.
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*
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* @return TestPack of the test. It can be serialized directly.
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* @throws common_Exception
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*/
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public function pack()
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{
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try {
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//call the factory to get the itemPacker implementation
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$testPacker = $this->getTestPacker();
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//then create the pack
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$testPack = $testPacker->packTest($this->test);
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} catch (Exception $e) {
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throw new common_Exception('The test ' . $this->test->getUri() . ' cannot be packed : ' . $e->getMessage());
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}
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return $testPack;
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}
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}
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