[DBAL-756] Add new method AbstractPlatform#getVendor().

UPGRADE.md

 # Upgrade to 2.5
 
+## New abstract method `getVendor` on `AbstractPlatform`
+
+Because we have been getting more and more version specific platforms
+it is necessary to detect platforms based on the vendor, not on their version names.
+For this a new method `abstract public function getVendor()` was introduced on
+the `AbstractPlatform`.
+
+If you have a custom platform that extends from `AbstractPlatform` you need to provide
+this method as of version 2.5 of DBAL.
+
 ## datetime Type uses date_create() as fallback
 
 Before 2.5 the DateTime type always required a specific format, defined in

lib/Doctrine/DBAL/Platforms/AbstractPlatform.php

@@ -337,6 +337,13 @@ abstract class AbstractPlatform
      */
     abstract public function getName();
 
+    /**
+     * Gets the name of the vendor, independent of version.
+     *
+     * @return string
+     */
+    abstract public function getVendor();
+
     /**
      * Registers a doctrine type to be used in conjunction with a column type of this platform.
      *

lib/Doctrine/DBAL/Platforms/DB2Platform.php

@@ -107,6 +107,14 @@ class DB2Platform extends AbstractPlatform
         return 'db2';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'db2';
+    }
+
     /**
      * {@inheritDoc}
      */

lib/Doctrine/DBAL/Platforms/DrizzlePlatform.php

@@ -40,6 +40,14 @@ class DrizzlePlatform extends AbstractPlatform
         return 'drizzle';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'drizzle';
+    }
+
     /**
      * {@inheritDoc}
      */

lib/Doctrine/DBAL/Platforms/MySqlPlatform.php

@@ -795,6 +795,14 @@ class MySqlPlatform extends AbstractPlatform
         return 'mysql';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'mysql';
+    }
+
     /**
      * {@inheritDoc}
      */

lib/Doctrine/DBAL/Platforms/OraclePlatform.php

@@ -810,6 +810,14 @@ LEFT JOIN user_cons_columns r_cols
         return 'oracle';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'oracle';
+    }
+
     /**
      * {@inheritDoc}
      */

lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php

@@ -874,6 +874,14 @@ class PostgreSqlPlatform extends AbstractPlatform
         return 'postgresql';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'postgresql';
+    }
+
     /**
      * {@inheritDoc}
      *

lib/Doctrine/DBAL/Platforms/SQLAnywherePlatform.php

@@ -1005,6 +1005,14 @@ class SQLAnywherePlatform extends AbstractPlatform
         return 'sqlanywhere';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'sqlanywhere';
+    }
+
     /**
      * Obtain DBMS specific SQL code portion needed to set a primary key
      * declaration to be used in statements like ALTER TABLE.

lib/Doctrine/DBAL/Platforms/SQLServerPlatform.php

@@ -1286,6 +1286,14 @@ class SQLServerPlatform extends AbstractPlatform
         return 'mssql';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'sqlserver';
+    }
+
     /**
      * {@inheritDoc}
      */

lib/Doctrine/DBAL/Platforms/SqlitePlatform.php

@@ -486,6 +486,14 @@ class SqlitePlatform extends AbstractPlatform
         return 'sqlite';
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getVendor()
+    {
+        return 'sqlite';
+    }
+
     /**
      * {@inheritDoc}
      */

tests/Doctrine/Tests/DBAL/Mocks/MockPlatform.php

@@ -56,6 +56,12 @@ class MockPlatform extends \Doctrine\DBAL\Platforms\AbstractPlatform
     {
         return 'mock';
     }
+
+    public function getVendor()
+    {
+        return 'mock';
+    }
+
     protected function initializeDoctrineTypeMappings() {
     }
     protected function getVarcharTypeDeclarationSQLSnippet($length, $fixed)

tests/Doctrine/Tests/Mocks/DatabasePlatformMock.php

@@ -72,6 +72,10 @@ class DatabasePlatformMock extends \Doctrine\DBAL\Platforms\AbstractPlatform
     {
         return 'mock';
     }
+    public function getVendor()
+    {
+        return 'mock';
+    }
     protected function initializeDoctrineTypeMappings() {
     }
     protected function getVarcharTypeDeclarationSQLSnippet($length, $fixed)