暂存

vendor/illuminate/database/SqlServerConnection.php

@@ -0,0 +1,164 @@
+<?php
+
+namespace Illuminate\Database;
+
+use Closure;
+use Exception;
+use Illuminate\Database\Query\Grammars\SqlServerGrammar as QueryGrammar;
+use Illuminate\Database\Query\Processors\SqlServerProcessor;
+use Illuminate\Database\Schema\Grammars\SqlServerGrammar as SchemaGrammar;
+use Illuminate\Database\Schema\SqlServerBuilder;
+use Illuminate\Filesystem\Filesystem;
+use RuntimeException;
+use Throwable;
+
+class SqlServerConnection extends Connection
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getDriverTitle()
+    {
+        return 'SQL Server';
+    }
+
+    /**
+     * Execute a Closure within a transaction.
+     *
+     * @param  \Closure  $callback
+     * @param  int  $attempts
+     * @return mixed
+     *
+     * @throws \Throwable
+     */
+    public function transaction(Closure $callback, $attempts = 1)
+    {
+        for ($a = 1; $a <= $attempts; $a++) {
+            if ($this->getDriverName() === 'sqlsrv') {
+                return parent::transaction($callback, $attempts);
+            }
+
+            $this->getPdo()->exec('BEGIN TRAN');
+
+            // We'll simply execute the given callback within a try / catch block
+            // and if we catch any exception we can rollback the transaction
+            // so that none of the changes are persisted to the database.
+            try {
+                $result = $callback($this);
+
+                $this->getPdo()->exec('COMMIT TRAN');
+            }
+
+            // If we catch an exception, we will rollback so nothing gets messed
+            // up in the database. Then we'll re-throw the exception so it can
+            // be handled how the developer sees fit for their applications.
+            catch (Throwable $e) {
+                $this->getPdo()->exec('ROLLBACK TRAN');
+
+                throw $e;
+            }
+
+            return $result;
+        }
+    }
+
+    /**
+     * Escape a binary value for safe SQL embedding.
+     *
+     * @param  string  $value
+     * @return string
+     */
+    protected function escapeBinary($value)
+    {
+        $hex = bin2hex($value);
+
+        return "0x{$hex}";
+    }
+
+    /**
+     * Determine if the given database exception was caused by a unique constraint violation.
+     *
+     * @param  \Exception  $exception
+     * @return bool
+     */
+    protected function isUniqueConstraintError(Exception $exception)
+    {
+        return (bool) preg_match('#Cannot insert duplicate key row in object#i', $exception->getMessage());
+    }
+
+    /**
+     * Extract the index that caused a unique constraint violation.
+     *
+     * @param  Exception  $exception
+     * @return array{index: string|null, columns: list<string>}
+     */
+    protected function parseUniqueConstraintViolation(Exception $exception): array
+    {
+        $index = null;
+
+        if (preg_match('#with unique index \'([^\']+)\'#i', $message = $exception->getMessage(), $matches)) {
+            $index = $matches[1];
+        } elseif (preg_match('#Violation of [A-Z ]+ constraint \'([^\']+)\'#i', $message, $matches)) {
+            $index = $matches[1];
+        }
+
+        return ['columns' => [], 'index' => $index];
+    }
+
+    /**
+     * Get the default query grammar instance.
+     *
+     * @return \Illuminate\Database\Query\Grammars\SqlServerGrammar
+     */
+    protected function getDefaultQueryGrammar()
+    {
+        return new QueryGrammar($this);
+    }
+
+    /**
+     * Get a schema builder instance for the connection.
+     *
+     * @return \Illuminate\Database\Schema\SqlServerBuilder
+     */
+    public function getSchemaBuilder()
+    {
+        if (is_null($this->schemaGrammar)) {
+            $this->useDefaultSchemaGrammar();
+        }
+
+        return new SqlServerBuilder($this);
+    }
+
+    /**
+     * Get the default schema grammar instance.
+     *
+     * @return \Illuminate\Database\Schema\Grammars\SqlServerGrammar
+     */
+    protected function getDefaultSchemaGrammar()
+    {
+        return new SchemaGrammar($this);
+    }
+
+    /**
+     * Get the schema state for the connection.
+     *
+     * @param  \Illuminate\Filesystem\Filesystem|null  $files
+     * @param  callable|null  $processFactory
+     *
+     * @throws \RuntimeException
+     */
+    public function getSchemaState(?Filesystem $files = null, ?callable $processFactory = null)
+    {
+        throw new RuntimeException('Schema dumping is not supported when using SQL Server.');
+    }
+
+    /**
+     * Get the default post processor instance.
+     *
+     * @return \Illuminate\Database\Query\Processors\SqlServerProcessor
+     */
+    protected function getDefaultPostProcessor()
+    {
+        return new SqlServerProcessor;
+    }
+}