Merge branch 'master' into converter

balking/README.md

@@ -0,0 +1,27 @@
+---
+layout: pattern
+title: Balking
+folder: balking
+permalink: /patterns/balking/
+categories: Concurrency
+tags:
+ - Java
+ - Difficulty-Beginner
+---
+
+## Intent
+Balking Pattern is used to prevent an object from executing certain code if it is an
+incomplete or inappropriate state
+
+![alt text](./etc/balking.png "Balking")
+
+## Applicability
+Use the Balking pattern when
+
+*you want to invoke an action on an object only when it is in a particular state
+*objects are generally only in a state that is prone to balking temporarily
+but for an unknown amount of time
+
+## Related patterns
+* Guarded Suspendion Pattern
+* Double Checked Locking Pattern

balking/etc/balking.ucls

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<class-diagram version="1.1.13" icons="true" automaticImage="PNG" always-add-relationships="false" 
+  generalizations="true" realizations="true" associations="true" dependencies="false" nesting-relationships="true" 
+  router="FAN">  
+  <class id="1" language="java" name="com.iluwatar.balking.App" project="balking" 
+    file="/balking/src/main/java/com/iluwatar/balking/App.java" binary="false" corner="BOTTOM_RIGHT">    
+    <position height="113" width="114" x="135" y="103"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <class id="2" language="java" name="com.iluwatar.balking.WashingMachine" project="balking" 
+    file="/balking/src/main/java/com/iluwatar/balking/WashingMachine.java" binary="false" corner="BOTTOM_RIGHT">    
+    <position height="149" width="268" x="289" y="103"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </class>  
+  <enumeration id="3" language="java" name="com.iluwatar.balking.WashingMachineState" project="balking" 
+    file="/balking/src/main/java/com/iluwatar/balking/WashingMachineState.java" binary="false" corner="BOTTOM_RIGHT">    
+    <position height="113" width="192" x="289" y="292"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+      sort-features="false" accessors="true" visibility="true">      
+      <attributes public="true" package="true" protected="true" private="true" static="true"/>      
+      <operations public="true" package="true" protected="true" private="true" static="true"/>    
+    </display>  
+  </enumeration>  
+  <association id="4">    
+    <end type="SOURCE" refId="2" navigable="false">      
+      <attribute id="5" name="washingMachineState"/>      
+      <multiplicity id="6" minimum="0" maximum="1"/>    
+    </end>    
+    <end type="TARGET" refId="3" navigable="true"/>    
+    <display labels="true" multiplicity="true"/>  
+  </association>  
+  <classifier-display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+    sort-features="false" accessors="true" visibility="true">    
+    <attributes public="true" package="true" protected="true" private="true" static="true"/>    
+    <operations public="true" package="true" protected="true" private="true" static="true"/>  
+  </classifier-display>  
+  <association-display labels="true" multiplicity="true"/>
+</class-diagram>

balking/etc/balking.urm.puml

@@ -0,0 +1,24 @@
+@startuml
+package com.iluwatar.balking {
+  class App {
+    - LOGGER : Logger {static}
+    + App()
+    + main(args : String[]) {static}
+  }
+  class WashingMachine {
+    - LOGGER : Logger {static}
+    - washingMachineState : WashingMachineState
+    + WashingMachine()
+    + endOfWashing()
+    + getWashingMachineState() : WashingMachineState
+    + wash()
+  }
+  enum WashingMachineState {
+    + ENABLED {static}
+    + WASHING {static}
+    + valueOf(name : String) : WashingMachineState {static}
+    + values() : WashingMachineState[] {static}
+  }
+}
+WashingMachine -->  "-washingMachineState" WashingMachineState
+@enduml

balking/pom.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    The MIT License
+    Copyright (c) 2014 Ilkka Seppälä
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
+    <artifactId>java-design-patterns</artifactId>
+    <groupId>com.iluwatar</groupId>
+    <version>1.15.0-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>balking</artifactId>
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+
+</project>

balking/src/main/java/com/iluwatar/balking/App.java

@@ -0,0 +1,65 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 Ilkka Seppälä
+ * <p>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * <p>
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * <p>
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.balking;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * In Balking Design Pattern if an object’s method is invoked when it is in an inappropriate state,
+ * then the method will return without doing anything. Objects that use this pattern are generally only in a
+ * state that is prone to balking temporarily but for an unknown amount of time
+ *
+ * In this example implementation WashingMachine is an object that has two states
+ * in which it can be: ENABLED and WASHING. If the machine is ENABLED
+ * the state is changed into WASHING that any other thread can't invoke this action on this and then do the job.
+ * On the other hand if it have been already washing and any other thread execute wash()
+ * it can't do that once again and returns doing nothing.
+ */
+
+public class App {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
+
+  /**
+   * @param args the command line arguments - not used
+   */
+  public static void main(String... args) {
+    final WashingMachine washingMachine = new WashingMachine();
+    ExecutorService executorService = Executors.newFixedThreadPool(3);
+    for (int i = 0; i < 3; i++) {
+      executorService.execute(washingMachine::wash);
+    }
+    executorService.shutdown();
+    try {
+      executorService.awaitTermination(10, TimeUnit.SECONDS);
+    } catch (InterruptedException ie) {
+      LOGGER.error("ERROR: Waiting on executor service shutdown!");
+    }
+  }
+
+}

balking/src/main/java/com/iluwatar/balking/WashingMachine.java

@@ -0,0 +1,73 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 Ilkka Seppälä
+ * <p>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * <p>
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * <p>
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.balking;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class WashingMachine {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(WashingMachine.class);
+
+  private WashingMachineState washingMachineState;
+
+  public WashingMachine() {
+    washingMachineState = WashingMachineState.ENABLED;
+  }
+
+  public WashingMachineState getWashingMachineState() {
+    return washingMachineState;
+  }
+
+  /**
+   * Method responsible for washing
+   * if the object is in appropriate state
+   */
+  public void wash() {
+    synchronized (this) {
+      LOGGER.info("{}: Actual machine state: {}", Thread.currentThread().getName(), getWashingMachineState());
+      if (washingMachineState == WashingMachineState.WASHING) {
+        LOGGER.error("ERROR: Cannot wash if the machine has been already washing!");
+        return;
+      }
+      washingMachineState = WashingMachineState.WASHING;
+    }
+    LOGGER.info("{}: Doing the washing", Thread.currentThread().getName());
+    try {
+      Thread.sleep(50);
+    } catch (InterruptedException ie) {
+      ie.printStackTrace();
+    }
+    endOfWashing();
+  }
+
+  /**
+   * Method responsible of ending the washing
+   * by changing machine state
+   */
+  public synchronized void endOfWashing() {
+    washingMachineState = WashingMachineState.ENABLED;
+    LOGGER.info("{}: Washing completed.", Thread.currentThread().getId());
+  }
+
+}

balking/src/main/java/com/iluwatar/balking/WashingMachineState.java

@@ -0,0 +1,32 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 Ilkka Seppälä
+ * <p>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * <p>
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * <p>
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.balking;
+
+/**
+ * WashingMachineState enum describes in which state machine is,
+ * it can be enabled and ready to work as well as during washing
+ */
+
+public enum WashingMachineState {
+  ENABLED, WASHING
+}

balking/src/test/java/com/iluwatar/balking/AppTest.java

@@ -0,0 +1,39 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 Ilkka Seppälä
+ * <p>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * <p>
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * <p>
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.iluwatar.balking;
+
+import org.junit.Test;
+
+/**
+ * Application test
+ */
+public class AppTest {
+
+  @Test
+  public void main() throws Exception {
+    String[] args = {};
+    App.main(args);
+  }
+
+}

balking/src/test/java/com/iluwatar/balking/WashingMachineTest.java

@@ -0,0 +1,62 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 Ilkka Seppälä
+ * <p>
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * <p>
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * <p>
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.balking;
+
+import org.junit.Test;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.Assert.*;
+
+public class WashingMachineTest {
+
+  private volatile WashingMachineState machineStateGlobal;
+
+  @Test
+  public void wash() throws Exception {
+    WashingMachine washingMachine = new WashingMachine();
+    ExecutorService executorService = Executors.newFixedThreadPool(2);
+    executorService.execute(washingMachine::wash);
+    executorService.execute(() -> {
+      washingMachine.wash();
+      machineStateGlobal = washingMachine.getWashingMachineState();
+    });
+    executorService.shutdown();
+    try {
+      executorService.awaitTermination(10, TimeUnit.SECONDS);
+    } catch (InterruptedException ie) {
+      ie.printStackTrace();
+    }
+    assertEquals(WashingMachineState.WASHING, machineStateGlobal);
+  }
+
+  @Test
+  public void endOfWashing() throws Exception {
+    WashingMachine washingMachine = new WashingMachine();
+    washingMachine.wash();
+    assertEquals(WashingMachineState.ENABLED, washingMachine.getWashingMachineState());
+  }
+
+}

event-asynchronous/README.md

@@ -12,11 +12,12 @@ tags:
 
 ## Intent
 The Event-based Asynchronous Pattern makes available the advantages of multithreaded applications while hiding many
-of the complex issues inherent in multithreaded design. Using a class that supports this pattern can allow you to:-
-(1) Perform time-consuming tasks, such as downloads and database operations, "in the background," without interrupting your application. 
-(2) Execute multiple operations simultaneously, receiving notifications when each completes. 
-(3) Wait for resources to become available without stopping ("hanging") your application. 
-(4) Communicate with pending asynchronous operations using the familiar events-and-delegates model.
+of the complex issues inherent in multithreaded design. Using a class that supports this pattern can allow you to:
+
+1. Perform time-consuming tasks, such as downloads and database operations, "in the background," without interrupting your application.
+2. Execute multiple operations simultaneously, receiving notifications when each completes.
+3. Wait for resources to become available without stopping ("hanging") your application.
+4. Communicate with pending asynchronous operations using the familiar events-and-delegates model.
 
 ![alt text](./etc/event-asynchronous.png "Event-based Asynchronous")
 

guarded-suspension/README.md

@@ -3,6 +3,7 @@ layout: pattern
 title: Guarded Suspension
 folder: guarded-suspension
 permalink: /patterns/guarded-suspension/
+pumlid: ROux3W8n30LxJW47IDnJxLLCOcMD4YVoXxq-eQTwev56UeSvgiVejmTBwL4fjDzFzsLF0CKhD_OpNc6aPOgJU2vp0FUuSAVmnW-cIiPDqa9tKZ4OQ1kW1MgbcYniaHXF0VBoH-VGaTVlnK5Iztu1
 categories: Concurrency
 tags:
  - Java

guarded-suspension/etc/guarded-suspension.urm.puml

@@ -1,5 +1,9 @@
 @startuml
 package com.iluwatar.guarded.suspension {
+  class App {
+    + App()
+    + main(args : String[]) {static}
+  }
   class GuardedQueue {
     - LOGGER : Logger {static}
     - sourceList : Queue<Integer>

hexagonal/README.md

@@ -4,6 +4,7 @@ title: Hexagonal Architecture
 folder: hexagonal
 permalink: /patterns/hexagonal/
 pumlid: HSTB4W8X30N0g-W1XkozpPD90LO8L3wEnzUTk-xxq2fvSfhSUiJs1v7XAcr4psSwMrqQh57gcZGaBmICNdZZEDb7qsCZWasT9lm7wln1MmeXZlfVIPjbvvGl
+pumlformat: svg
 categories: Architectural
 tags:
  - Java

intercepting-filter/etc/intercepting-filter.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.intercepting.filter {
   abstract class AbstractFilter {
     - next : Filter

interpreter/etc/interpreter.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.interpreter {
   class App {
     - LOGGER : Logger {static}

layers/README.md

@@ -4,6 +4,7 @@ title: Layers
 folder: layers
 permalink: /patterns/layers/
 pumlid: BSR13OCm30NGLSe0n7UsCS62L8w9x6yGszD3t-bDpQhc9kdwEO0H2v7pNVQ68zSCyNeQn53gsQbftWns-lB5yoRHTfi70-8Mr3b-8UL7F4XG_otflOpi-W80
+pumlformat: svg
 categories: Architectural
 tags:
  - Java

message-channel/README.md

@@ -3,7 +3,6 @@ layout: pattern
 title: Message Channel
 folder: message-channel
 permalink: /patterns/message-channel/
-pumlid: NSZB3SCm203GLTe1RExTXX1akm9YyMdMRy-zFRtdCf8wkLmUCtF72y3nxcFbhAE2dIvBjknqAIof6nCTtlZ1TdAiOMrZ9hi5ACOFe1o1WnjDD6C1Jlg_NgvzbyeN
 categories: Integration
 tags:
  - Java

naked-objects/README.md

@@ -3,7 +3,6 @@ layout: pattern
 title: Naked Objects
 folder: naked-objects
 permalink: /patterns/naked-objects/
-pumlid: LSX15i8W30N0g-W187jlaq9igH1uoO_r-BfrDs_kJKkFAc7zTW3B7qJ6LzuRZjZ2nSfKY2ANEQZrk1XiTFARKnLlkwR5W9Ww3VOVIFabDStjb08dGVcVz6mVX4aE6td5w5y0
 categories: Architectural
 tags:
  - Java

object-mother/README.md

@@ -3,7 +3,7 @@ layout: pattern
 title: Object Mother
 folder: object-mother
 permalink: /patterns/object-mother/
-pumlid: 
+pumlid: LOr13iCW30JlVKNx0E3UKxxYW9KGWK7sklb-wR6dtLbfj9k15DxRurKbDo_isfudCEsTaj8TZuhJTpVMF0GiY7dqL9lVjDHqqOT2OQk7X4a0grZgPAkaiL-S4Vh0kOYH_vVeskFyVMyiPUKN
 categories: Creational
 tags:
  - Java

observer/etc/observer.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.observer {
   class App {
     - LOGGER : Logger {static}

page-object/README.md

@@ -3,7 +3,6 @@ layout: pattern
 title: Page Object
 folder: page-object
 permalink: /patterns/page-object/
-pumlid: JSV14OGW30NGLjO28FVj9iOCua1Wme-sxnxtzjvMJLeS6ju-9p3NbyZvoQNYZ3sMkWo36hACJhN5ms2dYszEXwvQB4q6r6rHv_K3JIwQndwfW1Jo_npUyupUNW00
 categories: Testing
 tags:
 - Java
@@ -29,4 +28,3 @@ Use the Page Object pattern when
 
 * [Martin Fowler - PageObject](http://martinfowler.com/bliki/PageObject.html)
 * [Selenium - Page Objects](https://github.com/SeleniumHQ/selenium/wiki/PageObjects)
-

pom.xml

@@ -136,6 +136,7 @@
         <module>object-mother</module>
         <module>converter</module>
         <module>guarded-suspension</module>
+        <module>balking</module>
     </modules>
 
     <dependencyManagement>

promise/README.md

@@ -3,6 +3,7 @@ layout: pattern
 title: Promise
 folder: promise
 permalink: /patterns/promise/
+pumlid: DOqv4i8m301xNW4FYDLJvIl2rYHYBDcZWtmVKr3jDZkxUw15IhyzM6lFHcdzVaPCVm8ONkNWEFELJbQ71ccKEWIuvuKhXJT-S6laVEWsCO9C7GHz2KmRmav0KVzUqgJCtsydROjV
 categories: Concurrency
 tags:
  - Java

promise/etc/promise.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.promise {
   class App {
     - DEFAULT_URL : String {static}
@@ -70,8 +71,8 @@ package com.iluwatar.promise {
     + lowestFrequencyChar(charFrequency : Map<Character, Integer>) : Character {static}
   }
 }
-TransformAction -->  "-src" Promise
 TransformAction --+ Promise
+TransformAction -->  "-src" Promise
 ConsumeAction --+ Promise
 ConsumeAction -->  "-src" Promise
 Promise --|> PromiseSupport 

publish-subscribe/README.md

@@ -3,7 +3,6 @@ layout: pattern
 title: Publish Subscribe
 folder: publish-subscribe
 permalink: /patterns/publish-subscribe/
-pumlid: PSZB3SCm203GLTe1RExT1XCKKs5YyMdMR--zFRsd66aTNAwFcRdZ1U1uzrDorgXWfykIBJjT2qJhnaI7Dtwm7HnoMjkOoMu12-C7s3LKOhQe4UGo63ZfVtlvwhkMVW40
 categories: Integration
 tags:
  - Java

queue-load-leveling/README.md

@@ -3,7 +3,7 @@ layout: pattern
 title: Queue based load leveling
 folder: queue-load-leveling
 permalink: /patterns/queue-load-leveling/
-pumlid: 
+pumlid: ROux3W8n30LxJW47IDnJxLLCOcM376VnP_VwX9xgZKOQwMtcg1w3RuykXQDIADztzyEU08fNRjttU8MHbYbEuhdC0PtZmfN26qzCbQmtIGUwauh1G5i0dw2Wn1DhOZg9kpGWB_zy3Xtv-FtOIEhQBm00
 categories: Other
 tags:
  - Java

reactor/README.md

@@ -4,6 +4,7 @@ title: Reactor
 folder: reactor
 permalink: /patterns/reactor/
 pumlid: DSR14OGm20NGLjO23FVj1f7Hx2Ga0nzjVxtuJc-f9YrtJM-V4vZn9NA-or5nvfQXBiEWXYAZKsrvCzZfnnUlkqOzR9qCg5jGvtX2hYmOJWfvNz9xcTdR7m00
+pumlformat: svg
 categories: Concurrency
 tags:
  - Java

reactor/etc/reactor.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.reactor.framework {
   abstract class AbstractNioChannel {
     - channel : SelectableChannel

service-layer/etc/service-layer.urm.puml

@@ -1,4 +1,5 @@
 @startuml
+left to right direction
 package com.iluwatar.servicelayer.hibernate {
   class HibernateUtil {
     - LOGGER : Logger {static}