gielfeldt/transactionalphp

事务性PHP。

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github.com/gielfeldt/transactionalphp

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关注者: 2

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0.8.0 2016-08-18 11:07 UTC

Requires

  • php: >=5.4.0

MIT d1d944d4c074c1d2a3e90a8fe277e2cc83a2ba54

  • Thomas Gielfeldt <thomas.woop@gielfeldt.dk>

databasephptransactionaltransactions

This package is not auto-updated.

Last update: 2024-09-20 22:38:53 UTC

README

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安装

要在您的项目中使用Composer安装Transactional PHP库，首先将以下内容添加到您的composer.json配置文件中。

{
    "require": {
        "gielfeldt/transactionalphp": "^0.8"
    }
}

然后运行Composer的安装或更新命令以完成安装。有关如何使用Composer的更多信息，请访问Composer主页。

事务性PHP

此类允许在模拟事务中缓冲PHP代码，从而将代码的执行推迟到提交发生时。

动机

  1. 保持外部缓存与数据库同步的问题，请参阅Drupal模块Cache Consistent。

使用Transactional PHP库

示例1 - 简单
namespace Gielfeldt\TransactionalPHP\Example;

require 'vendor/autoload.php';

use Gielfeldt\TransactionalPHP\Connection;

$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();
示例2 - 提交和回滚
namespace Gielfeldt\TransactionalPHP\Example;

require 'vendor/autoload.php';

use Gielfeldt\TransactionalPHP\Connection;
use 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();
示例3 - 使用索引器
namespace Gielfeldt\TransactionalPHP\Example;

require 'vendor/autoload.php';

use Gielfeldt\TransactionalPHP\Connection;
use 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();
示例4 - 使用索引器进行查找的值存储
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) {
    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";
}

有关更多示例，请参阅examples/文件夹。

特性

  • 事务化PHP代码。
  • 索引操作用于查找。

注意事项

  1. 可能很多。