Workflow Entry: caDSR metadata query in caGrid

This workflow shows the coordinated use of two services in CaGrid, i.e., the caDSR (Cancer Data Standards Repository) and EVS (Enterprise Vocabulary Services) services. caDSR is to define a comprehensive set of standardized metadata descriptors for cancer research terminology used in information collection and analysis. EVS provides resources and services to meet NCI needs for controlled terminology, and to facilitate the standardization of terminology and information systems across the Institute and the larger biomedical community. This sample workflow is to find all the concepts related to a given context, for example, caCore. It is made up of four processors, several XML splitters between them, and a beanshell processor to do some XML transformation which can not be done by XML splitters (XML splitter cannot handle XML attributes). To accelerate the demo, we use two local java widgets, extract elements from a list, to filter out some intermediate results so that the workflow will complete quickly. This reduction does not influence the effect of the demo.

1. Use context information to invoke findProjects in caDSR, and get the project(s) information. 2. Use project information to invoke findClassesInProject in caDSR, to get the classes’ metadata. 3. Use project and classes metadata to invoke findSemanticMetadataForClass in caDSR, to get the semantic data for classes, including conceptName. 4. Use conceptName to invoke searchDescLogicConcept in EVS, to get detailed concept information.