BAEL-1524: Chain of Responsibility Design Pattern in Java (#3780)

* BAEL-1422: measure performance of Random and ThreadLocalRandom using JMH

* BAEL-1422: updated benchmarking examples of Random and ThreadLocalRandom to use newWorkStealingPool that leverages ForkJoinPool

* BAEL-1422: refactored benchmarking examples for comparing performance of ThreadLocalRandom and Random
- initialised the collection of Callable before running benchmarking
- removed for loop for submitting task and instead used executor.invokeAll(collection_of_callable)

* BAEL-1282: added TDD type junit tests for geospatial queries elasticsearch

* BAEL-1524: added example for chain of responsibility design pattern

* BAEL-1524: added BDD style jUnit test to test unknown handler in ChainOfResponsibility design pattern

* BAEL-1524: refactored ChainOfResponsibility design pattern example

* BAEL-1524: refactored ChainOfResponsibility design pattern example

* BAEL-1524: updated ChainOfResponsibility design pattern example

* BAEL-1524: updated ChainOfResponsibility design pattern example

* BAEL-1524: moved chain of responsibility example from core-java module to patterns module

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/AuthenticationProcessor.java

@@ -1,13 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public abstract class AuthenticationProcessor {
-
-    // next element in chain or responsibility
-    public AuthenticationProcessor nextProcessor;
-    
-    public AuthenticationProcessor(AuthenticationProcessor nextProcessor) {
-        this.nextProcessor = nextProcessor;
-    }
-
-    public abstract boolean isAuthorized(AuthenticationProvider authProvider);
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/AuthenticationProvider.java

@@ -1,5 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public interface AuthenticationProvider {
-
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/OAuthAuthenticationProcessor.java

@@ -1,21 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public class OAuthAuthenticationProcessor extends AuthenticationProcessor {
-
-    public OAuthAuthenticationProcessor(AuthenticationProcessor nextProcessor) {
-        super(nextProcessor);
-    }
-
-    @Override
-    public boolean isAuthorized(AuthenticationProvider authProvider) {
-
-        if (authProvider instanceof OAuthTokenProvider) {
-            return Boolean.TRUE;
-        } else if (nextProcessor != null) {
-            return nextProcessor.isAuthorized(authProvider);
-        } else {
-            return Boolean.FALSE;
-        }
-    }
-
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/OAuthTokenProvider.java

@@ -1,5 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public class OAuthTokenProvider implements AuthenticationProvider {
-
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/SamlAuthenticationProvider.java

@@ -1,5 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public class SamlAuthenticationProvider implements AuthenticationProvider {
-
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/UsernamePasswordAuthenticationProcessor.java

@@ -1,20 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public class UsernamePasswordAuthenticationProcessor extends AuthenticationProcessor {
-
-    public UsernamePasswordAuthenticationProcessor(AuthenticationProcessor nextProcessor) {
-        super(nextProcessor);
-    }
-
-    @Override
-    public boolean isAuthorized(AuthenticationProvider authProvider) {
-        if (authProvider instanceof UsernamePasswordProvider) {
-            return Boolean.TRUE;
-        } else if (nextProcessor != null) {
-            return nextProcessor.isAuthorized(authProvider);
-        } else {
-            return Boolean.FALSE;
-        }
-    }
-
-}

core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/UsernamePasswordProvider.java

@@ -1,5 +0,0 @@
-package com.baeldung.designpatterns.chainofresponsibility;
-
-public class UsernamePasswordProvider implements AuthenticationProvider {
-
-}