the whole shebang

2014-11-25 16:42:40 +01:00
parent 7f74c0613e
commit ab1334c0cf
3686 changed files with 496409 additions and 1 deletions
--- a/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/ShardManager.php
+++ b/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/ShardManager.php
@@ -0,0 +1,93 @@
+<?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;
+
+/**
+ * Sharding Manager gives access to APIs to implementing sharding on top of
+ * Doctrine\DBAL\Connection instances.
+ *
+ * For simplicity and developer ease-of-use (and understanding) the sharding
+ * API only covers single shard queries, no fan-out support. It is primarily
+ * suited for multi-tenant applications.
+ *
+ * The assumption about sharding here
+ * is that a distribution value can be found that gives access to all the
+ * necessary data for all use-cases. Switching between shards should be done with
+ * caution, especially if lazy loading is implemented. Any query is always
+ * executed against the last shard that was selected. If a query is created for
+ * a shard Y but then a shard X is selected when its actually executed you
+ * will hit the wrong shard.
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ */
+interface ShardManager
+{
+    /**
+     * Selects global database with global data.
+     *
+     * This is the default database that is connected when no shard is
+     * selected.
+     *
+     * @return void
+     */
+    function selectGlobal();
+
+    /**
+     * Selects the shard against which the queries after this statement will be issued.
+     *
+     * @param string $distributionValue
+     *
+     * @return void
+     *
+     * @throws \Doctrine\DBAL\Sharding\ShardingException If no value is passed as shard identifier.
+     */
+    function selectShard($distributionValue);
+
+    /**
+     * Gets the distribution value currently used for sharding.
+     *
+     * @return string
+     */
+    function getCurrentDistributionValue();
+
+    /**
+     * Gets information about the amount of shards and other details.
+     *
+     * Format is implementation specific, each shard is one element and has an
+     * 'id' attribute at least.
+     *
+     * @return array
+     */
+    function getShards();
+
+    /**
+     * Queries all shards in undefined order and return the results appended to
+     * each other. Restore the previous distribution value after execution.
+     *
+     * Using {@link \Doctrine\DBAL\Connection::fetchAll} to retrieve rows internally.
+     *
+     * @param string $sql
+     * @param array  $params
+     * @param array  $types
+     *
+     * @return array
+     */
+    function queryAll($sql, array $params, array $types);
+}