Anforderungen an die plattformneutrale Entwicklung. geeigneter Entwicklungswerkzeuge

Transcription

1 Stefan Frena

2 Stefan Frena Masterstudent Wirtschaftsinformatik HM München Masterarbeit bei Oracle zum Thema: Anforderungen an die plattformneutrale Entwicklung mobiler Anwendungen unter Berücksichtigung geeigneter Entwicklungswerkzeuge

3 Einführung Mobile Browser Mobile Client Mobile Databases

4 Einführung

5 Einführung Anbieter müssen sich auf mehrere Systeme konzentrieren!

6 Problemstellung

7 Visual Declarative Rapid Reuse Familiar Develop once, and deliver mobile optimized content to all devices. Mobile Browser Mobile Client

8 ADF Mobile Browser ADF Mobile Client Richness of User Interaction Delivers a rich mobile web experiences through AJAX and Web 2.0 technologies. UI rendering degrades gracefully to deliver HTML content to a wide set of consumer devices with basic HTML browsers. HTML (HTML Mobile Browser) AJAX (Smartphone Mobile Browsers) Native (Full Java Clients) Make business data available regardless of network connectivity. Deep integration with device services Device Service Access & Offline Support

9 Einführung Mobile Browser Mobile Client Mobile Databases

10 ADF Mobile Browser angepasstes Look&Feel der Web-Applikation im Browser des mobilen Geräts nutzt die Fähgigkeiten des Browsers auf dem Gerät praktisch auf jedem mobilen Gerät lauffähig erfordert Online-Verbindung zum Application Server

11 ADF Mobile Browser

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13 Skins: Browserweiche WebContent > WEB-INF > Trinidad-config.xml Trinidad-skins.xml

14 Problemstellung

15 ADF Mobile Browser

16 Desktop Browser und mobile Geräte ADF Swing Office JSP mobile JSF ADF Faces View Metadata Services (MDS) ADF Bindings (JSR 227) Java EJB TopLink BAM BPEL Struts Web Services ADFbc JSF/ADF Task Flow BI Essbase Portlets Controller Model Business Services Relational Data XML Data Legacy Data Packaged Apps Data Services

17 Einführung Mobile Browser Mobile Client Mobile Databases

18 Ausdehnung von Unternehmens- Applikationen auf mobile Clients Entwickelte Applikationen sind auf verschiedenen Plattformen lauffähig Tiefere Integration mit Funktionen des Gerätes wie z.b. Kontakten, Kalender, Barcode Scanner, GPS, etc. Connectivity Optionen: Online, Offline und Store-and- Forward Java-basierte Ablaufumgebung Komplette MVC-Implementierung auf dem Gerät UI-Metadaten werden als native Komponenten auf dem Gerät gerendert Java Client View Controller Model Local DB

19 ADF Mobile Client

20 ADF Mobile Client Architektur App Mobile Server deploy Java WMrt SQLite/BDB sync

21 On-Device Clients Web-based Clients ADF Mobile Client ADF Browser Clients Local Data Access Web Services & Transaction Replay Service Application Server SQLite or Berkeley DB msync Client Sync Automatically or on Demand (Complete, Delta, or Programmatic) Oracle Lite Mobile Server Database

22 Einführung Mobile Browser Mobile Client Mobile Database

23 ADF Mobile Client Architektur App Mobile Server deploy Java WMrt SQLite/BDB sync

24 Client Mobile Server Oracle Database Server Database Lite product Device / Sync Client Users Application ODBC / JDBC SQLite BDB OC4J or WLS Mobile Server Oracle Database Server Database Lite product MGP = Message Generator Process

25 Bi-directional Synchronization Oracle Database Lite supports upload and download of data during Synchronization. Synchronization can be customized to allow only upload. Synchronization can be customized to allow only download. Publish-Subscribe Model Developers can publish data subsets independent of their subscription by users Multi-platform Support Synchronization can be supported from multiple client platforms. Synchronization can be supported with Mobile Server running on multiple platforms. Selective Synchronization Full base table synchronization or subset of base tables

26 Conflict/Error Detection and Resolution Database Lite provides built-in conflict resolution capabilities via the Server Wins/Client Wins rules. Conflict resolution can be further customized by customizing synchronization. Mobile Server administrator can further manage conflicts. Synchronization Styles Automatic Synchronization allows Database Lite to invoke synchronization in the background. Manual Synchronization allows user or application to control synchronization timing. Software Management and Distribution Database Lite synchronization supports software distribution and updates.

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28 EmpID Fname Lname Salary Title Joe Brown Analyst Jane Katz Engineer Jake Rivers Manager Data-subsetting parameter a.k.a. Bind variable a.k.a. Snapshot template variable Base Table Emp on DB Server Select EmpID, Fname, Lname, Title from Emp where EmpID > :ID; Snapshot Query/Publication Item Query EmpID Fname Lname Title Jane Katz Engineer Jake Rivers Manager Publication Item on Client (ID > 80000)

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31 Device Mgmt Remote Diagnostics Inspection of client hardware, operating system settings Inspection and modification of application configuration Command Execution Client database information retrieval and synchronization statistics Client database removal, application removal, application data removal

32 Client Apply/Compose Network transfer/latency Mobile Server Processing MGP MGP Apply MGP Compose Total Response Time Usually the performance of the client database is not an issue The speed of the network is always a large element of the total response time, application design should ensure that client subscriptions are fast refreshed when possible to minimize network requirements. Mobile Server Processing is a affected by the total number of concurrent users, (MAX_Concurrent parameter in webtogo.ora parameter file) and memory tuning of JVM. MGP is usually the most resource intense process and the Compose Phase of MGP will constitute the larger part of total MGP time. This is affected by the Oracle Database instance and classic SQL tuning and instance tuning can make tremendous differences in the performance of MGP. Especially difficult issues involving elongated MGP time can best be diagnosed using the Consperf tool.

33 Browser vs. Client

34 Oracle Application Development Framework (ADF) Oracle ADF mobile Oracle Lite Mobile Server

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