Stepwise Migration of Cloned Product Variants to a Compositional Software Product Line

克隆产品变体逐步迁移到组合软件产品线

• 批准号: 280801480
• 负责人: Professor Dr.-Ing. Thomas Leich
• 金额: --
• 依托单位: Arbeitsgruppe Datenbanken und Software Engineering
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/280801480?language=en
• 关键词: Stepwise; Migration; Cloned; Product; Variants

Software product lines enable the strategic reuse of software and handle variability in a systematic way. In practice, however, reuse and variability are often implemented ad hoc, by copying and adapting artifacts (the clone-and-own approach). Due to a lack of automation, propagating changes (e. g. error corrections, performance improvements) to several cloned product variants and exchanging functionality between variants is time-consuming and error prone.To solve these problems, we propose the stepwise migration of cloned product variants to a compositional software product line (SPL). First, all of the variants are integrated unaltered into an initial SPL. Subsequently, this SPL is transformed into a well-structured, modular target SPL by means of small, semantics-preserving steps. Compared to existing approaches to migrate product variants to an SPL, this course of action provides the following advantages:1) The SPL can be used in production immediately. Up until now, production had to be halted for extended periods of time because migration could not be interrupted.2) The composition-based implementation approach supports maintainability. This avoids the problems associated with annotation-based SPL implementation techniques (e. g. lack of modularization, hard to read program code), which are widely used in practice.3) Semantics-preservation of the original variants is guaranteed.The core of our project is the research of variant-preserving refactoring. By this, we mean consistent transformations on the model as well as the implementation level, which are semantics-preserving with respect to all possible products of the SPL. These refactorings are combined with code clone detection in order to increase reuse and thereby decrease maintenance costs and future defect rates. Moreover, we will research feature location techniques in multiple product variants. Combined with variant-preserving refactoring, these techniques allow for the stepwise extraction of functionality from multiple product variants. Not only can we reconstruct the original variants by composing the extracted features, but we can even create new variants. Thereby, new requirements are addressed even more effectively.

软件产品线使软件的战略重用成为可能，并以系统的方式处理可变性。然而，在实践中，重用和可变性通常是通过复制和调整工件（克隆和拥有的方法）临时实现的。由于缺乏自动化，传播更改（e。G.为了解决这些问题，提出了将克隆产品变体逐步迁移到组合软件产品线（SPL）的方法。首先，所有的变体都被整合到初始SPL中。随后，这个SPL被转换成一个结构良好的，模块化的目标SPL通过小，语义保持步骤。与现有的将产品变体迁移到SPL的方法相比，该行动过程提供了以下优点：1）SPL可以立即用于生产。到目前为止，由于迁移不能中断，生产必须长时间停止。2）基于组合的实现方法支持可维护性。这避免了与基于注释的SPL实现技术（例如，G.缺乏模块化，程序代码难以阅读），这些问题在实践中得到了广泛的应用。3）保证了原始变量的语义保持。通过这一点，我们意味着在模型和实现级别上的一致转换，这对于SPL的所有可能产品都是语义保持的。这些重构与代码克隆检测相结合，以增加重用，从而降低维护成本和未来的缺陷率。此外，我们将研究多产品变体中的特征定位技术。结合变体保留重构，这些技术允许从多个产品变体中逐步提取功能。我们不仅可以通过组合提取的特征来重建原始变体，还可以创建新的变体。因此，新的要求得到更有效的解决。

项目成果

Effects of explicit feature traceability on program comprehension

• DOI: 10.1145/3338906.3338968
• 发表时间: 2019-08
• 期刊: Proceedings of the 2019 27th ACM Joint Meeting on European Software Engineering Conference and Symposium on the Foundations of Software Engineering
• 作者: J. Krüger;G. Çalikli;T. Berger;Thomas Leich;G. Saake

variED: an editor for collaborative, real-time feature modeling

variED：用于协作、实时特征建模的编辑器

• DOI: 10.1007/s10664-020-09892-x
• 发表时间: 2021
• 期刊: Empirical Software Engineering
• 影响因子: 4.1
• 作者: Elias Kuiter;Sebastian Krieter;Jacob Krüger;Gunter Saake;Thomas Leich
• 通讯作者: Thomas Leich

An empirical analysis of the costs of clone- and platform-oriented software reuse

• DOI: 10.1145/3368089.3409684
• 发表时间: 2020-11
• 期刊: Proceedings of the 28th ACM Joint Meeting on European Software Engineering Conference and Symposium on the Foundations of Software Engineering
• 作者: J. Krüger;T. Berger

Stability of Product-Line Samplingin Continuous Integration

• DOI: 10.1145/3442391.3442410
• 发表时间: 2021-02
• 期刊: Proceedings of the 15th International Working Conference on Variability Modelling of Software-Intensive Systems
• 作者: T. Pett;S. Krieter;Tobias Runge;Thomas Thüm;Malte Lochau;Ina Schaefer

Activities and costs of re-engineering cloned variants into an integrated platform

将克隆变体重新设计为集成平台的活动和成本

• DOI: 10.1145/3377024.3377044
• 发表时间: 2020
• 期刊: Proceedings of the 14th International Working Conference on Variability Modelling of Software-Intensive Systems
• 作者: Jacob Krüger;Thorsten Berger
• 通讯作者: Thorsten Berger