README.md

Decision Table

This is a flogo activity based Decision Table implementation used inside a rules application. It can be invoked as rule action service. Decision Table provide a tabular way to build complex business rules. Each column can be created based on predefined properties. These properties are defined in the tuple descriptor used inside a rule application. Each row can be thought of as one rule in a table made up of many rules. The individual rules are often straightforward, as in the following example.

Rule conditions:

person.age > 30
person.gender == "male"

Rule actions:

application.status = "ACCEPTED"
application.credit = 4000

A decision table can consist of hundreds, even thousands of rules each of which is executed only when its specific conditions are satisfied.

Usage

The available activity settings are as follows:

Name	Type	Description
dTableFile	string	Decision table file path (xlsx & csv extensions are supported)

A sample decision table definition is:

    {
        "name": "ApplicantSimple",
        "description": "Simple Applicants approval dt",
        "type": "activity",
        "ref": "github.com/project-flogo/rules/activity/dtable",
        "settings": {
            "dTableFile":"creditcard-file.xlsx"
        }
    }

An example rule action service that invokes the above ApplicantSimple decision table is:

    "actionService": {
        "service": "ApplicantSimple",
        "input": {
            "message": "test ApplicantSimple"
        }
    }