| Project/Area Number |
11480059
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
計算機科学
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| Research Institution | University of Tsukuba |
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Principal Investigator |
ITANO Kozo University of Tsukuba, Institute of Information Sciences & Electronics, Professor, 電子・情報工学系, 教授 (20114035)
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| Co-Investigator(Kenkyū-buntansha) |
SHINJO Yasushi University of Tsukuba, Institute of Information Sciences & Electronics, Assistant Professor, 電子・情報工学系, 講師 (00253948)
CHIBA Shigeru Tokyo Institue of Technology, Dept. of Mathematical and computing sciences, Assistant Professor, 情報理工学研究科, 講師 (80282713)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥7,800,000 (Direct Cost: ¥7,800,000)
Fiscal Year 2001: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2000: ¥3,900,000 (Direct Cost: ¥3,900,000)
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| Keywords | Reflection / Mobile agents / Java bytecode / E-mail / Language processing system / Parallelizing Comilers / Security / 小型情報端末 / 利用者認証 / オブジェクト指向 / 分散処理 / Java |
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| Research Abstract |
In this research, we have proposed an effective development method of mobile agents based on the reflection technology. By using the proposed method, we have also implemented a mobile agent system called Flyingware, which makes use of e-mail as the communication media.
The first advantage of the mobile agent system is easiness for programmers to use the system. Conventional mobile agent systems require that ether programmers have to specify all the necessary programs in advance by hand, or necessary programs have to be transferred on demand. In our system, the programmers specify only the object and the method that should be invoked after migration. This easiness is accomplished by use of the reflection technology. Necessary programs are collected by using the reflection technology and transferred automatically. The second advantage of the mobile agent system is use of e-mail as the communication m'edia. This means that no special server or place is needed while the conventional system required such facility. The third advantage is the use of the Java programming language. This enlarges the application field of the implemented mobile agent system.
In this research, we have also built two language processing systems, called OpenJava and Javassist based on the reflection technology. Furthermore, we applied the reflection technology to implement parallelizing compilers. We also worked on the safe execution environments for mobile agents.
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