Rajout de doctrine/orm

[zf2.biz/application_blanche.git] / vendor / doctrine / dbal / lib / Doctrine / DBAL / Sharding / PoolingShardManager.php

diff --git a/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/PoolingShardManager.php b/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/PoolingShardManager.php
new file mode 100644 (file)
index 0000000..6f6c5d2
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+++ b/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/PoolingShardManager.php
@@ -0,0 +1,98 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Sharding;
+
+use Doctrine\DBAL\Sharding\ShardChoser\ShardChoser;
+
+/**
+ * Shard Manager for the Connection Pooling Shard Strategy
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ */
+class PoolingShardManager implements ShardManager
+{
+    private $conn;
+    private $choser;
+    private $currentDistributionValue;
+
+    public function __construct(PoolingShardConnection $conn)
+    {
+        $params       = $conn->getParams();
+        $this->conn   = $conn;
+        $this->choser = $params['shardChoser'];
+    }
+
+    public function selectGlobal()
+    {
+        $this->conn->connect(0);
+        $this->currentDistributionValue = null;
+    }
+
+    public function selectShard($distributionValue)
+    {
+        $shardId = $this->choser->pickShard($distributionValue, $this->conn);
+        $this->conn->connect($shardId);
+        $this->currentDistributionValue = $distributionValue;
+    }
+
+    public function getCurrentDistributionValue()
+    {
+        return $this->currentDistributionValue;
+    }
+
+    public function getShards()
+    {
+        $params = $this->conn->getParams();
+        $shards = array();
+
+        foreach ($params['shards'] as $shard) {
+            $shards[] = array('id' => $shard['id']);
+        }
+
+        return $shards;
+    }
+
+    public function queryAll($sql, array $params, array $types)
+    {
+        $shards = $this->getShards();
+        if (!$shards) {
+            throw new \RuntimeException("No shards found.");
+        }
+
+        $result = array();
+        $oldDistribution = $this->getCurrentDistributionValue();
+
+        foreach ($shards as $shard) {
+            $this->selectShard($shard['id']);
+            foreach ($this->conn->fetchAll($sql, $params, $types) as $row) {
+                $result[] = $row;
+            }
+        }
+
+        if ($oldDistribution === null) {
+            $this->selectGlobal();
+        } else {
+            $this->selectShard($oldDistribution);
+        }
+
+        return $result;
+    }
+}
+