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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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* 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.doctrine-project.org>. |
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*/ |
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namespace Baleen\Migrations\Delta\Collection\Resolver; |
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use Baleen\Migrations\Delta\Collection\Collection; |
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use Baleen\Migrations\Delta\DeltaInterface; |
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/** |
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* Class FirstLastResolver |
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* @author Gabriel Somoza <[email protected]> |
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*/ |
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final class FirstLastResolver extends AbstractResolver |
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{ |
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const FIRST = 'first'; |
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const EARLIEST = 'earliest'; |
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const LAST = 'last'; |
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const LATEST = 'latest'; |
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/** |
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* Resolves an alias into a Delta. |
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* |
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* @param string $alias |
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* |
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* @param Collection $collection |
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* @return DeltaInterface|null |
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*/ |
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protected function doResolve($alias, Collection $collection) |
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{ |
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$result = null; |
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switch (strtolower($alias)) { |
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case self::LAST: |
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case self::LATEST: |
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$result = $collection->last(); |
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break; |
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case self::FIRST: |
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case self::EARLIEST: |
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$result = $collection->first(); |
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break; |
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default: |
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} |
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return $result; |
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} |
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} |
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baleen /
migrations
