Abstract
Abstract. Tank Information System is a web application which provides comprehensive information about minor irrigation tanks of Telangana State. As part of the program, a web mapping application using Flex and ArcGIS server was developed to make the data available to the public. In course of time as Flex be-came outdated, a migration of the client interface to the latest JavaScript based technologies was carried out. Initially, the Flex based application was migrated to ArcGIS JavaScript API using Dojo Toolkit. Both the client applications used published services from ArcGIS server. To check the migration pattern from proprietary to open source, the JavaScript based ArcGIS application was later migrated to OpenLayers and Dojo Toolkit which used published service from GeoServer. The migration pattern noticed in the study especially emphasizes upon the use of Dojo Toolkit and PostgreSQL database for ArcGIS server so that migration to open source could be performed effortlessly. The current ap-plication provides a case in study which could assist organizations in migrating their proprietary based ArcGIS web applications to open source. Furthermore, the study reveals cost benefits of adopting open source against commercial software's.
Highlights
Irrigation & CAD department of Telangana state is responsible for planning, Designing, Construction and maintenance of major, medium and minor dams across the state
The geoservices i.e. the REST services published using ArcGIS server are utilised across different API's such as Flex, JavaScript and Silverlight for developing web mapping applications
This is true for applications which are built using Flex for gaming, but when Flex is used for web application development, the User Interface (UI) components of Dojo Toolkit are matured compared to UI components of Flex
Summary
Irrigation & CAD department of Telangana state is responsible for planning, Designing, Construction and maintenance of major, medium and minor dams across the state. Erstwhile panchayat raj tanks i.e. tanks catering to cultivable command area less than 40 ha come under the category of Minor Irrigation. Minor irrigation plays an important role in the development of agricultural production and ensures food security in drought prone areas and those outside the command area of major and medium projects. To monitor minor irrigation tanks, a comprehensive list of tanks database along with delineation of minor irrigation tanks was undertaken by the erstwhile Andhra Pradesh State Remote Sensing Applications Centre (APSRAC) in collaboration with I & CAD department as part of Memorandum Of Understanding (MOU) signed between both the organizations. A website i.e., “Tank Information System” has been developed to display, query and analyze the collected information
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