Pattern 22 (Case to Environment - Pull)

FLASH animation of Data Interaction - Case to Environment - Pull-Oriented pattern

Description

The ability of a case to respond to requests for data elements from a service or resource in the operating environment.

Example

Each case of the Handle Visa process must respond to data requests from the Immigration Department.

Motivation

The rationale for this pattern is similar to that for Pattern 21 in terms of supporting data passing from a case to a resource or service external to a process, however in this case the data passing is initiated by a request from the external environment.

Overview

N/A

Context

There are no specific context conditions associated with this pattern.

Implementation

For offerings supporting case level data, the most common approach to supporting this pattern is to provide the ability for external processes to interactively query case-level data elements. This pattern is not widely implemented amongst the PAIS examined. FLOWer provides direct support via the chp_dat_getval API call. iPlanet provides a variety of XML and HTTP-based API facilities that allow the value of process data elements to be requested.

Issues

None observed.

Solutions

N/A

Evaluation Criteria

An offering achieves full support if it has a construct that satisfies the description for the pattern.

Product Evaluation

To achieve a + rating (direct support) or a +/- rating (partial support) the product should satisfy the corresponding evaluation criterion of the pattern. Otherwise a - rating (no support) is assigned.

Summary of Evaluation