The JOLAP specification defines two compliance levels that differentiate on the basis of core and core-with-optional functionality.

JOLAP 规范定义了两种遵从性级别，它们的差别在于一个具有最基础的核心功能，另一个是具有可选功能的核心功能。

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Is the reference implementation for JSR-170. It is part of the Apache foundation and provides level 1, 2 and optional functionality.

它是JSR - 170的参考实现，Apache基金的一部分，提供级别1,2和可选功能。

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In order to provide this functionality, you need an Access Integration pattern (this is optional).

为了实现这种功能，您需要访问集成模式(这是可选的)。

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The Android 4.1.2 handset features a 5-inch HD (1, 280 x 720) IPS display, 1GB RAM and offers enhanced functionality with an optional capacitive stylus and specialized apps such as a notebook and movie editor -- this in addition to packing that previously announced 1.2GHz quad-core MT6589 SoC from MediaTek.

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The other main attraction of this phone is that it comes with an optional laptop dock, which can be connected to Atrix 4G smartphone to give users laptop like experience and functionality.

FORBES: Is Atrix 4G Salvation For Motorola Mobility?