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Components of a Rule

What are the Components?

A rule is divided into four components:

•	The rules declaration, including optional arguments and local variables

•	Conditions, including a quadrant of Y/N (yes/no) values

•	Actions, including columns of action sequence numbers

•	Exception handlers

Illustration of the Component Parts of a Rule

Using the following sample rule, this chapter explains the components of a TIBCO Object Service Broker rule.

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RULE EDITOR ===> SCROLL: P

EMPLOYEES_RAISE(JOBTITLE, REGION); Declaration

_ LOCAL RAISE, RATE;

_ ------------------------------------------------------------------------

_ JOBTITLE = 'SENIOR ANALYST'; Conditions | Y N N

_ JOBTITLE = 'ANALYST'; | Y N

_ ------------------------------------------------------------+-----------

_ RATE = 0.1; | 1

_ RATE = 0.05; Actions | 1

_ RATE = 0.02; | 1

_ GET EMPLOYEES(REGION) WHERE POSITION = JOBTITLE; | 2

_ FORALL EMPLOYEES.SALARY * RATE; | 2 2 3

_ EMPLOYEES.SALARY = EMPLOYEES.SALARY + RAISE; |

_ CALL REPLACE_SALARY(REGION); |

_ CALL MSGLOG(EMPLOYEES.LNAME || ‘ NOW EARNS ‘ || |

_ EMPLOYEES.SALARY); |

_ END; |

_ -------------------------------------------------------------------------

ON GETFAIL: Exception Handlers

CALL ENDMSG('POSITION IS INVALID');

 

 

PFKEYS: 1=HELP 3=END 12=CANCEL 13=PRINT 14=EXPAND 2=DOCUMENT 22=DELETE

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Information about Syntax

For an explanation of the syntax of these components, refer to Chapter 8, Using Expressions and Operators and Syntax of Rules.

Copyright © Cloud Software Group, Inc. All Rights Reserved