/**
  * Test automatic de-index.
  *
  * @param Connection $connection
  *   The connection to perform tests on.
  *
  * @dataProvider connectionDataProvider
  */
 public function testAutoDeIndex(Connection $connection)
 {
     $indexer = new Indexer($connection);
     $connection->startTransaction();
     $operation1 = $indexer->index($connection->addMetadata('value', 'value1'), 'test1');
     $connection->startTransaction();
     $indexer->index($connection->addMetadata('value', 'value2'), 'test2');
     $connection->rollbackTransaction();
     $check = $indexer->lookup('test1');
     $this->assertSame([$operation1->idx($connection) => $operation1], $check, 'Operations not found during lookup.');
     $check = $indexer->lookup('test2');
     $this->assertSame([], $check, 'Operations found during lookup.');
     $connection->commitTransaction();
     $check = $indexer->lookup('test1');
     $this->assertSame([], $check, 'Operations found during lookup.');
 }
namespace Gielfeldt\TransactionalPHP\Example;

require 'vendor/autoload.php';
use Gielfeldt\TransactionalPHP\Connection;
use Gielfeldt\TransactionalPHP\Indexer;
$connection = new Connection();
$indexer = new Indexer($connection);
// Start outer transaction.
$connection->startTransaction();
print "Started outer transaction\n";
$indexer->index($connection->addMetadata('value', 'value1'), 'test1');
$indexer->index($connection->addMetadata('value', 'value2'), 'test1');
$indexer->index($connection->addMetadata('value', 'value1'), 'test2');
$indexer->index($connection->addMetadata('value', 'value2'), 'test2');
print "Added data to indexer\n";
foreach ($indexer->lookup('test1') as $operation) {
    print "Looked up test1 - found: " . $operation->getMetadata('value') . "\n";
}
foreach ($indexer->lookup('test2') as $operation) {
    print "Looked up test2 - found: " . $operation->getMetadata('value') . "\n";
}
// Start inner transaction.
$connection->startTransaction();
print "Started inner transaction\n";
$indexer->index($connection->addMetadata('value', 'value3'), 'test1');
$indexer->index($connection->addMetadata('value', 'value3'), 'test2');
print "Added data to indexer\n";
foreach ($indexer->lookup('test1') as $operation) {
    print "Looked up test1 - found: " . $operation->getMetadata('value') . "\n";
}
foreach ($indexer->lookup('test2') as $operation) {