add methods to set rules engine parameters with a Fluent API

easy-rules-core/src/main/java/org/jeasy/rules/core/RulesEngineParameters.java

@@ -130,6 +130,11 @@ public class RulesEngineParameters {
         this.priorityThreshold = priorityThreshold;
     }
 
+    public RulesEngineParameters priorityThreshold(final int priorityThreshold) {
+        setPriorityThreshold(priorityThreshold);
+        return this;
+    }
+
     public boolean isSkipOnFirstAppliedRule() {
         return skipOnFirstAppliedRule;
     }
@@ -138,6 +143,11 @@ public class RulesEngineParameters {
         this.skipOnFirstAppliedRule = skipOnFirstAppliedRule;
     }
 
+    public RulesEngineParameters skipOnFirstAppliedRule(final boolean skipOnFirstAppliedRule) {
+        setSkipOnFirstAppliedRule(skipOnFirstAppliedRule);
+        return this;
+    }
+
     public boolean isSkipOnFirstNonTriggeredRule() {
         return skipOnFirstNonTriggeredRule;
     }
@@ -146,6 +156,11 @@ public class RulesEngineParameters {
         this.skipOnFirstNonTriggeredRule = skipOnFirstNonTriggeredRule;
     }
 
+    public RulesEngineParameters skipOnFirstNonTriggeredRule(final boolean skipOnFirstNonTriggeredRule) {
+        setSkipOnFirstNonTriggeredRule(skipOnFirstNonTriggeredRule);
+        return this;
+    }
+
     public boolean isSkipOnFirstFailedRule() {
         return skipOnFirstFailedRule;
     }
@@ -154,6 +169,11 @@ public class RulesEngineParameters {
         this.skipOnFirstFailedRule = skipOnFirstFailedRule;
     }
 
+    public RulesEngineParameters skipOnFirstFailedRule(final boolean skipOnFirstFailedRule) {
+        setSkipOnFirstFailedRule(skipOnFirstFailedRule);
+        return this;
+    }
+
     @Override
     public String toString() {
         return "Engine parameters { " +

easy-rules-core/src/test/java/org/jeasy/rules/core/RulePriorityThresholdTest.java

@@ -39,8 +39,7 @@ public class RulePriorityThresholdTest extends AbstractTest {
         when(rule1.getPriority()).thenReturn(1);
         when(rule1.evaluate(facts)).thenReturn(true);
 
-        RulesEngineParameters parameters = new RulesEngineParameters();
-        parameters.setPriorityThreshold(1);
+        RulesEngineParameters parameters = new RulesEngineParameters().priorityThreshold(1);
         rulesEngine = new DefaultRulesEngine(parameters);
     }
 

easy-rules-core/src/test/java/org/jeasy/rules/core/SkipOnFirstAppliedRuleTest.java

@@ -33,8 +33,7 @@ public class SkipOnFirstAppliedRuleTest extends AbstractTest {
     @Before
     public void setup() throws Exception {
         super.setup();
-        RulesEngineParameters parameters = new RulesEngineParameters();
-        parameters.setSkipOnFirstAppliedRule(true);
+        RulesEngineParameters parameters = new RulesEngineParameters().skipOnFirstAppliedRule(true);
         rulesEngine = new DefaultRulesEngine(parameters);
     }
 

easy-rules-core/src/test/java/org/jeasy/rules/core/SkipOnFirstFailedRuleTest.java

@@ -33,8 +33,7 @@ public class SkipOnFirstFailedRuleTest extends AbstractTest {
     @Before
     public void setup() throws Exception {
         super.setup();
-        RulesEngineParameters parameters = new RulesEngineParameters();
-        parameters.setSkipOnFirstFailedRule(true);
+        RulesEngineParameters parameters = new RulesEngineParameters().skipOnFirstFailedRule(true);
         rulesEngine = new DefaultRulesEngine(parameters);
     }
 

easy-rules-core/src/test/java/org/jeasy/rules/core/SkipOnFirstNonTriggeredRuleTest.java

@@ -33,8 +33,7 @@ public class SkipOnFirstNonTriggeredRuleTest extends AbstractTest {
     @Before
     public void setup() throws Exception {
         super.setup();
-        RulesEngineParameters parameters = new RulesEngineParameters();
-        parameters.setSkipOnFirstNonTriggeredRule(true);
+        RulesEngineParameters parameters = new RulesEngineParameters().skipOnFirstNonTriggeredRule(true);
         rulesEngine = new DefaultRulesEngine(parameters);
     }
 

easy-rules-tutorials/src/main/java/org/jeasy/rules/tutorials/fizzbuzz/FizzBuzzWithEasyRules.java

@@ -32,8 +32,7 @@ import org.jeasy.rules.core.RulesEngineParameters;
 public class FizzBuzzWithEasyRules {
     public static void main(String[] args) {
         // create rules engine
-        RulesEngineParameters parameters = new RulesEngineParameters();
-        parameters.setSkipOnFirstAppliedRule(true);
+        RulesEngineParameters parameters = new RulesEngineParameters().skipOnFirstAppliedRule(true);
         RulesEngine fizzBuzzEngine = new DefaultRulesEngine(parameters);
 
         // create rules