PHP code example of gielfeldt / transactionalphp

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

gielfeldt / transactionalphp example snippets

namespace Gielfeldt\TransactionalPHP\Example;

connection = new Connection();

// Start outer transaction.
$connection->startTransaction();

$connection->onCommit(function () {
    print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE COMMITTED\n";
});

// Start inner transaction.
$connection->startTransaction();

$connection->onCommit(function () {
    print "THIS WILL NOT BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK\n";
});

// Rollback inner transaction.
$connection->rollbackTransaction();

// Commit inner transaction.
$connection->commitTransaction();

namespace Gielfeldt\TransactionalPHP\Example;

e Gielfeldt\TransactionalPHP\Operation;

$connection = new Connection();

$operation = new Operation();
$operation->onCommit(function () {
    print "THIS WILL BE PRINTED IMMEDIATELY, BECAUSE NO TRANSACTION HAS BEGUN\n";
})
->onRollback(function () {
    print "THIS WILL NEVER BE PRINTED, BECAUSE NO TRANSACTION HAS BEGUN\n";
});
$connection->addOperation($operation);

// Start outer transaction.
$connection->startTransaction();

$operation = new Operation();
$operation->onCommit(function () {
    print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE COMMITTED\n";
})
->onRollback(function () {
    print "THIS WILL NEVER BE PRINTED, BECAUSE THIS WILL BE COMMITTED\n";
});
$connection->addOperation($operation);

// Start inner transaction.
$connection->startTransaction();

$operation = new Operation();
$operation->onCommit(function () {
    print "THIS WILL NOT BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK\n";
})
->onRollback(function () {
    print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK\n";
});
$connection->addOperation($operation);

// Rollback inner transaction.
$connection->rollbackTransaction();

// Commit inner transaction.
$connection->commitTransaction();

namespace Gielfeldt\TransactionalPHP\Example;

e Gielfeldt\TransactionalPHP\Indexer;
use Gielfeldt\TransactionalPHP\Operation;

$connection = new Connection();
$indexer = new Indexer($connection);

$operation = (new Operation())
    ->onCommit(function () {
        print "THIS WILL BE PRINTED IMMEDIATELY, BECAUSE NO TRANSACTION HAS BEGUN\n";
    })
    ->onRollback(function () {
        print "THIS WILL NEVER BE PRINTED, BECAUSE NO TRANSACTION HAS BEGUN\n";
    })
    ->onBuffer(function ($operation) use ($indexer) {
        print "INDEXING test1\n";
        $indexer->index($operation, 'test1');
    })
    ->setMetadata('value', 'test1');
$connection->addOperation($operation);

// Start outer transaction.
$connection->startTransaction();

$operation = (new Operation())
    ->onCommit(function () {
        print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE COMMITTED\n";
    })
    ->onRollback(function () {
        print "THIS WILL NEVER BE PRINTED, BECAUSE THIS WILL BE COMMITTED\n";
    })
    ->onBuffer(function ($operation) use ($indexer) {
        print "INDEXING test2\n";
        $indexer->index($operation, 'test2');
    })
    ->setMetadata('value', 'test2');
$connection->addOperation($operation);

// Start inner transaction.
$connection->startTransaction();

$operation = (new Operation())
    ->onCommit(function () {
        print "THIS WILL NOT BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK\n";
    })
    ->onRollback(function () {
        print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK\n";
    })
    ->onBuffer(function ($operation) use ($indexer) {
        print "INDEXING test3\n";
        $indexer->index($operation, 'test3');
    })
    ->setMetadata('value', 'test3');
$connection->addOperation($operation);

$operation = (new Operation())
    ->onCommit(function () {
        print "THIS WILL NOT BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK - second\n";
    })
    ->onRollback(function () {
        print "THIS WILL BE PRINTED, BECAUSE THIS WILL BE ROLLED BACK - second\n";
    })
    ->onBuffer(function ($operation) use ($indexer) {
        print "INDEXING test3 - second\n";
        $indexer->index($operation, 'test3');
    })
    ->setMetadata('value', 'test3 - second');
$connection->addOperation($operation);

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: " . $operation->getMetadata('value') . "\n";
}
foreach ($indexer->lookup('test3') as $operation) {
    print "Looked up test3 - found: " . $operation->getMetadata('value') . "\n";
}

// Rollback inner transaction.
$connection->rollbackTransaction();

// Commit inner transaction.
$connection->commitTransaction();

namespace Gielfeldt\TransactionalPHP\Example;

e 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) {
    print "Looked up test2 - found: " . $operation->getMetadata('value'). "\n";
}

// Rollback inner transaction.
$connection->rollbackTransaction();
print "Rolled back inner transaction\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";
}

// Easy values lookup.
var_dump($indexer->lookupMetadata('test1', 'value'));
var_dump($indexer->lookupMetadata('test2', 'value'));

// Commit inner transaction.
$connection->commitTransaction();
print "Committed outer transaction\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";
}