add tutorial about engine scheduler

easyrules-samples/pom.xml

@@ -59,6 +59,11 @@
             <artifactId>easyrules-jmx</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>org.easyrules</groupId>
+            <artifactId>easyrules-quartz</artifactId>
+        </dependency>
+
     </dependencies>
 
     <profiles>
@@ -128,6 +133,28 @@
                 </plugins>
             </build>
         </profile>
+        <profile>
+            <id>runSchedulerTutorial</id>
+            <build>
+                <defaultGoal>exec:java</defaultGoal>
+                <plugins>
+                    <plugin>
+                        <groupId>org.codehaus.mojo</groupId>
+                        <artifactId>exec-maven-plugin</artifactId>
+                        <version>1.3</version>
+                        <configuration>
+                            <mainClass>org.easyrules.samples.scheduling.Launcher</mainClass>
+                            <systemProperties>
+                                <systemProperty>
+                                    <key>java.util.logging.SimpleFormatter.format</key>
+                                    <value>[%1$tc] %4$s: %5$s%n</value>
+                                </systemProperty>
+                            </systemProperties>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 
 </project>

easyrules-samples/src/main/java/org/easyrules/samples/scheduling/Launcher.java

@@ -0,0 +1,27 @@
+package org.easyrules.samples.scheduling;
+
+import org.easyrules.api.RulesEngine;
+import org.easyrules.core.RulesEngineBuilder;
+import org.easyrules.quartz.RulesEngineScheduler;
+
+import java.util.Date;
+
+/**
+ * Main class to run the scheduler tutorial.
+ *
+ * @author Mahmoud Ben Hassine (mahmoud@benhassine.fr)
+ */
+public class Launcher {
+
+    public static void main(String[] args) throws Exception {
+
+        RulesEngine rulesEngine = RulesEngineBuilder.aNewRulesEngine().build();
+
+        rulesEngine.registerRule(new TimeRule());
+
+        RulesEngineScheduler scheduler = new RulesEngineScheduler(rulesEngine);
+        scheduler.scheduleAtWithInterval(new Date(), 1);
+        scheduler.start();
+
+    }
+}

easyrules-samples/src/main/java/org/easyrules/samples/scheduling/TimeRule.java

@@ -0,0 +1,25 @@
+package org.easyrules.samples.scheduling;
+
+import org.easyrules.annotation.Action;
+import org.easyrules.annotation.Condition;
+import org.easyrules.annotation.Rule;
+
+import java.util.Date;
+
+@Rule(name = "time rule", description = "Print the current time only if when minutes are even")
+public class TimeRule {
+
+    private Date now;
+
+    @Condition
+    public boolean checkTime() {
+        now = new Date();
+        return now.getMinutes() % 2 == 0;
+    }
+
+    @Action
+    public void printTime() {
+        System.out.println(now);
+    }
+
+}

pom.xml

@@ -90,6 +90,12 @@
                 <version>${project.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>org.easyrules</groupId>
+                <artifactId>easyrules-quartz</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+
             <dependency>
                 <groupId>junit</groupId>
                 <artifactId>junit</artifactId>