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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The software is based on the Axon Framework project which is |
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* licensed under the Apache 2.0 license. For more information on the Axon Framework |
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* see <http://www.axonframework.org/>. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. For more information, see |
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* <http://www.governor-framework.org/>. |
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*/ |
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namespace Governor\Framework\CommandHandling; |
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use Governor\Framework\UnitOfWork\UnitOfWorkInterface; |
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/** |
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* Mechanism that takes care of interceptor and event handler execution. |
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* |
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* @author "David Kalosi" <[email protected]> |
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* @license <a href="http://www.opensource.org/licenses/mit-license.php">MIT License</a> |
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*/ |
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class DefaultInterceptorChain implements InterceptorChainInterface |
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{ |
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/** |
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* @var CommandMessageInterface |
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*/ |
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private $command; |
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/** |
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* @var CommandHandlerInterface |
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*/ |
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private $handler; |
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/** |
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* @var \ArrayIterator |
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*/ |
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private $chain; |
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/** |
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* @var UnitOfWorkInterface |
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*/ |
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private $unitOfWork; |
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/** |
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* Initialize the default interceptor chain to dispatch the given <code>command</code>, through the |
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* <code>chain</code>, to the <code>handler</code>. |
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* |
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* @param CommandMessageInterface $command The command to dispatch through the interceptor chain |
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* @param UnitOfWorkInterface $unitOfWork The UnitOfWork the command is executed in |
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* @param CommandHandlerInterface $handler The handler for the command |
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* @param array $chain The interceptor composing the chain |
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*/ |
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public function __construct(CommandMessageInterface $command, |
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UnitOfWorkInterface $unitOfWork, CommandHandlerInterface $handler, |
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array $chain) |
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{ |
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$this->command = $command; |
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$this->handler = $handler; |
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$this->chain = new \ArrayIterator($chain); |
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$this->unitOfWork = $unitOfWork; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function proceed(CommandMessageInterface $commandProceedWith = null) |
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{ |
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if (null !== $commandProceedWith) { |
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$this->command = $commandProceedWith; |
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} |
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if ($this->chain->valid()) { |
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$next = $this->chain->current(); |
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$this->chain->next(); |
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return $next->handle($this->command, $this->unitOfWork, $this); |
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} else { |
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return $this->handler->handle($this->command, $this->unitOfWork); |
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} |
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} |
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} |
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SmartGecko /
GovernorFramework
