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使用可选的完整表结构缓存功能的yajra/pdo-via-oci8编写的Yii2 OCI8扩展。支持PHP7。

支持

Yii 2.x;
yajra/pdo-via-oci8 1.x;
>= PHP 5.4;
>= PHP 7.0.

安装

将以下内容添加到您的 composer.json 文件中

   "require": {
     "neconix/yii2-oci8": "1.*"
   }

然后运行 composer update。

Oracle数据库的Yii2配置示例

Yii2配置

$config = [
    ...
    'components' => [
        ...
        'db' => require(__DIR__ . '/db.php'),
        ...
    ]
];

db.php 中的数据库配置

return [
    'class' => 'neconix\yii2oci8\Oci8Connection',
    'dsn' => 'oci:dbname=//192.168.0.1:1521/db.local;charset=AL32UTF8;',
    'username' => 'user',
    'password' => 'pass',
    'attributes' => [ PDO::ATTR_PERSISTENT => true ],
    'enableSchemaCache' => true, //Oracle dictionaries is too slow :(, enable caching
    'schemaCacheDuration' => 60 * 60, //1 hour
    'on afterOpen' => function($event) {

    /* A session configuration example */
        $q = <<<SQL
begin
  execute immediate 'alter session set NLS_SORT=BINARY_CI';
  execute immediate 'alter session set NLS_TERRITORY=AMERICA';
end;
SQL;
        $event->sender->createCommand($q)->execute();
    }
];

示例

请随意使用Yii2 ActiveRecord 方法

$cars = Car::find()->where(['YEAR' => '1939'])->indexBy('ID')->all();

获取原始数据库处理程序并与它一起工作

$dbh = Yii::$app->db->getDbh();
$stmt = oci_parse($dbh, "select * from DEPARTMENTS where NAME = :name");
$name = 'NYPD';
oci_bind_by_name($stmt, ':name', $name);
oci_execute($stmt);
...
//fetching result

缓存功能

要在数据库连接配置 db.php 中启用对模式中所有表的缓存，请添加以下行

    ...
    //Disabling Yii2 schema cache
    'enableSchemaCache' => false
    
    //Defining a cache schema component
    'cachedSchema' => [
        'class' => 'neconix\yii2oci8\CachedSchema',
        // Optional, default is the current connection schema.
        'cachingSchemas' => ['HR', 'SCOTT'],
        // Optional. This callback must return `true` for a table name if it need to be cached.
        'tableNameFilter' => function ($tableName, $schemaName) {
            //Cache everything but the EMP table from HR and SCOTT schemas
            return $tableName != 'EMP';
        }
    ],
    ...

将表结构保存到默认的Yii2缓存组件。在连接打开后构建模式缓存

    'on afterOpen' => function($event) 
    {
        $event->sender->createCommand($q)->execute();

        /* @var $schema \neconix\yii2oci8\CachedSchema */
        $schema = $event->sender->getSchema();

        if (!$schema->isCached)
            //Rebuild schema cache
            $schema->buildSchemaCache();
    },

neconix / yii2-oci8

维护者

详细信息

README