IBM BPM, V8.0.1, All platforms > Programming IBM BPM > Business rule management programming > Examples

Example 1: Retrieve and print all business rule groups

This example will retrieve all business rule groups and print out the attributes, the properties, and the operations for each business rule group.

package com.ibm.websphere.sample.brules.mgmt;

import java.util.Iterator;
import java.util.List;

For the business rules management classes, be sure to use those classes in the com.ibm.wbiserver.brules.mgmt package and not the com.ibm.wbiserver.brules package or other package. These other packages are for IBM internal classes.

import com.ibm.wbiserver.brules.mgmt.BusinessRuleGroup;
import
com.ibm.wbiserver.brules.mgmt.BusinessRuleManagementException;
import com.ibm.wbiserver.brules.mgmt.BusinessRuleManager;
import com.ibm.wbiserver.brules.mgmt.Operation;
import com.ibm.wbiserver.brules.mgmt.Property;
import com.ibm.wbiserver.brules.mgmt.PropertyList;

public class Example1 {
static Formatter out = new Formatter();
static public String executeExample1()
{
try
{
out.clear();

The BusinessRuleManager class is the main class to retrieve business rule groups and to publish changes to business rule groups. This includes working with and changing any rule artifacts such as rule sets and decision tables. There are a number of methods on the BusinessRuleManager class that simplify the retrieval of specific business rule groups by name and namespace and properties.

// Retrieve all business rule groups List<BusinessRuleGroup> brgList = BusinessRuleManager
		.getBusinessRuleGroups(0, 0);

Iterator<BusinessRuleGroup> iterator = brgList.iterator();

BusinessRuleGroup brg = null;
// Iterate through the list of business rule groups while (iterator.hasNext())
{
		brg = iterator.next();
		// Output attributes for each business rule group 		out.printlnBold("Business Rule Group");

The basic attributes of the business rule group can be retrieved and displayed.

out.println("Name: " + brg.getName());
out.println("Namespace: " +
brg.getTargetNameSpace());
out.println("Display Name: " +
brg.getDisplayName());
out.println("Description: " + brg.getDescription());
out.println("Presentation Time zone: "
					+ brg.getPresentationTimezone());
out.println("Save Date: " + brg.getSaveDate());

The properties for the business rule group can also be retrieved and modified.

PropertyList propList = brg.getProperties();

Iterator<Property> propIterator =
propList.iterator();
Property prop = null;
// Output property names and values while (propIterator.hasNext())
{
prop = propIterator.next();
out.println("Property Name: " +
prop.getName());
out.println("Property Value: " +
prop.getValue());}

The operations for the business rule group are also available and are the way to retrieve the business rule artifacts such as rule sets and decision tables.

List<Operation> opList = brg.getOperations();

Iteration<Operation> opIterator = opList.iterator();
Operation op = null;
// Output operations for the business rule group while (opIterator.hasNext())
{
op = opIterator.next();
out.println("Operation: " + op.getName());} out.println("");} } catch (BusinessRuleManagementException e)
{
e.printStackTrace();
out.println(e.getMessage());} return out.toString();} }

Web browser output for example 1.

Executing example1

Business Rule Group
Name: ApprovalValues
Namespace: http://BRSamples/com/ibm/websphere/sample/brules
Display Name: ApprovalValues
Description: null
Presentation Time zone: LOCAL
Save Date: Sun Jan 06 17:56:51 CST 2008
Property Name: IBMSystemVersion
Property Value: 6.2.0
Property Name: Department
Property Value: Accounting
Property Name: RuleType
Property Value: regulatory
Property Name: IBMSystemTargetNameSpace
Property Value: http://BRSamples/com/ibm/websphere/sample/brules
Property Name: IBMSystemName
Property Value: ApprovalValues
Property Name: IBMSystemDisplayName
Property Value: ApprovalValues
Operation: getApprover

Business Rule Group
Name: ConfigurationValues
Namespace: http://BRSamples/com/ibm/websphere/sample/brules
Display Name: ConfigurationValues
Description: null
Presentation Time zone: LOCAL
Save Date: Sun Jan 06 17:56:51 CST 2008
Property Name: IBMSystemVersion
Property Value: 6.2.0
Property Name: Department
Property Value: General
Property Name: RuleType
Property Value: messages Property Name: IBMSystemTargetNameSpace
Property Value: http://BRSamples/com/ibm/websphere/sample/brules
Property Name: IBMSystemName
Property Value: ConfigurationValues
Property Name: IBMSystemDisplayName
Property Value: ConfigurationValues
Operation: getMessages

Business Rule Group
Name: DiscountRules
Namespace: http://BRSamples/com/ibm/websphere/sample/brules
Display Name: DiscountRules
Description: null
Presentation Time zone: LOCAL
Save Date: Sun Jan 06 17:56:51 CST 2008
Property Name: Department
Property Value: Accounting
Property Name: IBMSystemVersion
Property Value: 6.2.0
Property Name: RuleType
Property Value: monetary
Property Name: IBMSystemTargetNameSpace
Property Value: http://BRSamples/com/ibm/websphere/sample/brules
Property Name: IBMSystemName
Property Value: DiscountRules
Property Name: IBMSystemDisplayName
Property Value: DiscountRules
Operation: calculateOrderDiscount
Operation: calculateShippingDiscount

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