Pattern 24 (Environment to Workflow - Pull)

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

Description

The ability of a process environment to request global data elements from external applications.

Example

The Monitor Portfolios process is able to request new market position download from the Stock Exchange at any time.

Motivation

This pattern is motivated by the need for the process environment (or elements within it) to request data from external applications for subsequent use by some or all components of the process in all current and future cases.

Overview

N/A

Context

There are no specific context conditions associated with this pattern.

Implementation

None of the PAIS examined provide direct support for this pattern however it is included in this patterns taxonomy as it constitutes a useful generalization of the preceding pattern which operates in the reverse direction (i.e. the process requests data elements from the environment instead of emitting them to it).

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