11:37 a.m.
Hi
I am using Drools 4.0 version with .xml file.
Here is my java program.
<-------------------------------------------------------------------------------->
package com.wipro.rfq.report.bean;
import java.io.InputStreamReader;
import java.io.Reader;
import org.drools.RuleBase;
import org.drools.StatefulSession;
import org.drools.RuleBaseFactory;
import org.drools.compiler.PackageBuilder;
import org.drools.rule.Package;
public class Validator {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
//load up the rulebase
final RuleBase ruleBase = readRule();
StatefulSession workingMemory = ruleBase.newStatefulSession();
RFQBean bean=new RFQBean();
bean.setM_country("India");
bean.setM_deadLine("two days");
bean.setM_dueDate("24/10/2007");
bean.setM_fsUMC("4");
bean.setM_lotSize("5");
bean.setM_mtrlType("6");
bean.setM_partId("1100");
bean.setM_product("lux");
bean.setM_rfqId("1234");
workingMemory.insert( bean );
workingMemory.fireAllRules();
}catch(Exception e){
System.out.println("The description of error is "+e);
}
}
private static RuleBase readRule() throws Exception {
final Reader source = new InputStreamReader( Validator.class.getResourceAsStream(
"/rules/Check.xml" ) );
final PackageBuilder builder = new PackageBuilder();
builder.addPackageFromXml( source );
final Package pkg = builder.getPackage();
final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( pkg );
return ruleBase;
}
public static class RFQBean {
private String m_rfqId;
private String m_partId;
private String m_product;
private String m_country;
private String m_lotSize;
private String m_mtrlType;
private String m_fsUMC;
private String m_deadLine;
private String m_dueDate;
public String getM_country() {
return m_country;
}
public void setM_country(String m_country) {
this.m_country = m_country;
}
public String getM_deadLine() {
return m_deadLine;
}
public void setM_deadLine(String line) {
m_deadLine = line;
}
public String getM_dueDate() {
return m_dueDate;
}
public void setM_dueDate(String date) {
m_dueDate = date;
}
public String getM_fsUMC() {
return m_fsUMC;
}
public void setM_fsUMC(String m_fsumc) {
m_fsUMC = m_fsumc;
}
public String getM_lotSize() {
return m_lotSize;
}
public void setM_lotSize(String size) {
m_lotSize = size;
}
public String getM_mtrlType() {
return m_mtrlType;
}
public void setM_mtrlType(String type) {
m_mtrlType = type;
}
public String getM_partId() {
return m_partId;
}
public void setM_partId(String id) {
m_partId = id;
}
public String getM_product() {
return m_product;
}
public void setM_product(String m_product) {
this.m_product = m_product;
}
public String getM_rfqId() {
return m_rfqId;
}
public void setM_rfqId(String id) {
m_rfqId = id;
}
}
}
<----------------------------------------------------------------------------------------------------->
And my .xml file is the following:
<------------------------------------------------------------------------------------------------------>
<?xml version="1.0" encoding="UTF-8"?>
<package name="rules"
xmlns="http://drools.org/drools-4.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
xs:schemaLocation="http://drools.org/drools-4.0 drools-4.0.xsd">
<import name="com.wipro.rfq.report.bean.Validator.RFQBean" />
<import name="java.util.regex.Pattern" />
<global identifier="bean"
type="com.wipro.rfq.report.bean.Validator.RFQBean" />
<rule name="Check_NotNullof_rfqId"> <!--start of rule 1-->
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_rfqId">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_rfqId is null");
</rhs>
</rule> <!--end of rule 1-->
<rule name="Check_NotNullof_partId">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_partId">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_partId is null");
</rhs>
</rule>
<rule name="Check_NotNullof_product">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_product">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_product is null");
</rhs>
</rule>
<rule name="Check_NotNullof_country">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_country">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_country is null");
</rhs>
</rule>
<rule name="Check_NotNullof_lotSize">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_lotSize">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_lotSize is null");
</rhs>
</rule>
<rule name="Check_NotNullof_mtrlType">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_mtrlType">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_mtrlType is null");
</rhs>
</rule>
<rule name="Check_NotNullof_fsUMC">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_fsUMC">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_fsUMC is null");
</rhs>
</rule>
<rule name="Check_NotNullof_deadLine">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_deadLine">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_deadLine is null");
</rhs>
</rule>
<rule name="Check_NotNullof_Date">
<lhs>
<pattern identifier="bean" object-type="RFQBean" >
<field-constraint field-name="m_dueDate">
<literal-restriction evaluator="==" value="null" />
</field-constraint>
</pattern>
</lhs>
<rhs>
System.out.println("The value of m_dueDate is null");
</rhs>
</rule>
<rule name="temp">
<lhs>
<eval>bean.getM_dueDate().trim().equals("24/10/2007")</eval>
</lhs>
<rhs>
System.out.println("The entered date is "+bean.getM_dueDate());
</rhs>
</rule>
</package>
<---------------------------------------------------------------------------------------------------------------------------------------------------->
Now i want to know that how can i use a method of "RFQBean" class inside the
<lhs></lhs> and <rhs></rhs>tag
And please mail me the description of all the tags that i can use in a rule based .xml
file.
Also how can i know that whether a particular rule has been fired or not.
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