This information is for a release that is no longer supported by the Globus Toolkit. The currently supported versions of the Globus Toolkit are 4.2 (recommended) and 4.0.

WS Information Services : Developer's Guide

>Overview
API: Aggregator | Service Data Providers
WS Service Data Providers
Web Service Data Browser
Querying Service Data (Xpath)
Querying Service Data (ogsi-find-service-data)
Querying Examples
GLUE schema
Migrating from Pre-WS to WS: Porting Guide

Overview

In the Open Grid Service Architecture (OGSA) on which the Globus® Toolkit Version 3.2 (GT3) is based, everything is represented as a Grid service.

These Grid services can be a static set of persistent services as well as transient services such as a query against a database, a data mining operation, a network bandwidth allocation, a running data transfer, and an advance reservation for processing capability.

There may be one or more instances of a particular Grid service. Each Grid service instance has a set of service data associated with it, and this data is represented in a standardized way as Service Data Elements (SDEs).

Index Services provides the functionality within which Service Data Elements can be collected, aggregated, and queried; data feeds can be monitored; and Service Data Elements can be created dynamically on demand.

Specifically, WS Index Services is a modular Java component framework for OGSA that service developers can use to implement various information management solutions for GT3.2-compatible OGSA services. This framework allows for the creation of a set of classes and class-like components for "everyday" information management tasks.

Service Data Provider components implement a standard mechanism for dynamic generation of Service Data Elements. GT3.2 includes a set of core Service Data Providers as well as the capability for you to create your own Service Data Providers.

Prerequisite Documents

The following GT3.2 documents should be read as prerequisites to creating your own Service Data Providers: