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Refactoring Legacy Software for Layer Separation.

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Názov: Refactoring Legacy Software for Layer Separation.
Autori: Khalilipour, Alireza, Challenger, Moharram, Onat, Mehmet, Gezgen, Hale, Kardas, Geylani
Zdroj: International Journal of Software Engineering & Knowledge Engineering; Feb2021, Vol. 31 Issue 2, p217-247, 31p
Predmety: SOFTWARE refactoring, SOFTWARE architecture, SOFTWARE maintenance, LEGACY systems, OPTICAL scanners, INFORMATION storage & retrieval systems
Abstrakt: One of the main aims in the layered software architecture is to divide the code into different layers so that each layer contains related modules and serves its upper layers. Although layered software architecture is matured now; many legacy information systems do not benefit from the advantages of this architecture and their code for the process/business and data access are mostly in a single layer. In many legacy systems, due to the integration of the code in one layer, changes to the software and its maintenance are mostly difficult. In addition, the big size of a single layer causes the load concentration and turns the server into a bottleneck where all requests must be executed on it. In order to eliminate these deficiencies, this paper presents a refactoring mechanism for the automatic separation of the business and data access layers by detecting the data access code based on a series of patterns in the input code and transferring it to a new layer. For this purpose, we introduce a code scanner which detects the target points based on these patterns and hence automatically makes the changes required for the layered architecture. According to the experimental evaluation results, the performance of the system is increased for the layer separated software using the proposed approach. Furthermore, it is examined that the application of the proposed approach provides additional benefits considering the qualitative criteria such as loosely coupling and tightly coherency. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Software Engineering & Knowledge Engineering is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Refactoring Legacy Software for Layer Separation.
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  Data: <searchLink fieldCode="AR" term="%22Khalilipour%2C+Alireza%22">Khalilipour, Alireza</searchLink><br /><searchLink fieldCode="AR" term="%22Challenger%2C+Moharram%22">Challenger, Moharram</searchLink><br /><searchLink fieldCode="AR" term="%22Onat%2C+Mehmet%22">Onat, Mehmet</searchLink><br /><searchLink fieldCode="AR" term="%22Gezgen%2C+Hale%22">Gezgen, Hale</searchLink><br /><searchLink fieldCode="AR" term="%22Kardas%2C+Geylani%22">Kardas, Geylani</searchLink>
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  Data: International Journal of Software Engineering & Knowledge Engineering; Feb2021, Vol. 31 Issue 2, p217-247, 31p
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  Data: <searchLink fieldCode="DE" term="%22SOFTWARE+refactoring%22">SOFTWARE refactoring</searchLink><br /><searchLink fieldCode="DE" term="%22SOFTWARE+architecture%22">SOFTWARE architecture</searchLink><br /><searchLink fieldCode="DE" term="%22SOFTWARE+maintenance%22">SOFTWARE maintenance</searchLink><br /><searchLink fieldCode="DE" term="%22LEGACY+systems%22">LEGACY systems</searchLink><br /><searchLink fieldCode="DE" term="%22OPTICAL+scanners%22">OPTICAL scanners</searchLink><br /><searchLink fieldCode="DE" term="%22INFORMATION+storage+%26+retrieval+systems%22">INFORMATION storage & retrieval systems</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: One of the main aims in the layered software architecture is to divide the code into different layers so that each layer contains related modules and serves its upper layers. Although layered software architecture is matured now; many legacy information systems do not benefit from the advantages of this architecture and their code for the process/business and data access are mostly in a single layer. In many legacy systems, due to the integration of the code in one layer, changes to the software and its maintenance are mostly difficult. In addition, the big size of a single layer causes the load concentration and turns the server into a bottleneck where all requests must be executed on it. In order to eliminate these deficiencies, this paper presents a refactoring mechanism for the automatic separation of the business and data access layers by detecting the data access code based on a series of patterns in the input code and transferring it to a new layer. For this purpose, we introduce a code scanner which detects the target points based on these patterns and hence automatically makes the changes required for the layered architecture. According to the experimental evaluation results, the performance of the system is increased for the layer separated software using the proposed approach. Furthermore, it is examined that the application of the proposed approach provides additional benefits considering the qualitative criteria such as loosely coupling and tightly coherency. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Software Engineering & Knowledge Engineering is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1142/S0218194021500066
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 31
        StartPage: 217
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      – SubjectFull: SOFTWARE refactoring
        Type: general
      – SubjectFull: SOFTWARE architecture
        Type: general
      – SubjectFull: SOFTWARE maintenance
        Type: general
      – SubjectFull: LEGACY systems
        Type: general
      – SubjectFull: OPTICAL scanners
        Type: general
      – SubjectFull: INFORMATION storage & retrieval systems
        Type: general
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      – TitleFull: Refactoring Legacy Software for Layer Separation.
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            NameFull: Khalilipour, Alireza
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            NameFull: Challenger, Moharram
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            NameFull: Onat, Mehmet
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            NameFull: Gezgen, Hale
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            NameFull: Kardas, Geylani
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              M: 02
              Text: Feb2021
              Type: published
              Y: 2021
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              Value: 31
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