Work on #226, moved POSA reference and some J2EE design pattern references

README.md

@@ -38,7 +38,6 @@ If you are willing to contribute to the project you will find the relevant infor
 
 # Credits
 
-* [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)
 * [Effective Java (2nd Edition)](http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp/0321356683)
 * [Java Generics and Collections](http://www.amazon.com/Java-Generics-Collections-Maurice-Naftalin/dp/0596527756/)
 * [Let's Modify the Objects-First Approach into Design-Patterns-First](http://edu.pecinovsky.cz/papers/2006_ITiCSE_Design_Patterns_First.pdf)
@@ -48,7 +47,6 @@ If you are willing to contribute to the project you will find the relevant infor
 * [Patterns of Enterprise Application Architecture](http://www.amazon.com/Patterns-Enterprise-Application-Architecture-Martin/dp/0321127420)
 * [Spring Data](http://www.amazon.com/Spring-Data-Mark-Pollack/dp/1449323952/ref=sr_1_1)
 * [J2EE Design Patterns](http://www.amazon.com/J2EE-Design-Patterns-William-Crawford/dp/0596004273/ref=sr_1_2)
-* [Pattern Oriented Software Architecture Vol I-V](http://www.amazon.com/Pattern-Oriented-Software-Architecture-Volume-Patterns/dp/0471958697)
 
 # License
 

dao/index.md

@@ -4,7 +4,9 @@ title: Data Access Object
 folder: dao
 permalink: /patterns/dao/
 categories: Architectural
-tags: Java
+tags:
+ - Java
+ - Difficulty-Beginner
 ---
 
 **Intent:** Object provides an abstract interface to some type of database or
@@ -16,3 +18,7 @@ other persistence mechanism.
 
 * when you want to consolidate how the data layer is accessed
 * when you want to avoid writing multiple data retrieval/persistence layers
+
+**Credits:**
+
+* [J2EE Design Patterns](http://www.amazon.com/J2EE-Design-Patterns-William-Crawford/dp/0596004273/ref=sr_1_2)

front-controller/index.md

@@ -22,3 +22,9 @@ internationalization, routing and logging in a single place.
 **Real world examples:** 
 
 * [Apache Struts](https://struts.apache.org/)
+
+**Credits:**
+
+* [J2EE Design Patterns](http://www.amazon.com/J2EE-Design-Patterns-William-Crawford/dp/0596004273/ref=sr_1_2)
+* [Presentation Tier Patterns](http://www.javagyan.com/tutorials/corej2eepatterns/presentation-tier-patterns)
+* [Patterns of Enterprise Application Architecture](http://www.amazon.com/Patterns-Enterprise-Application-Architecture-Martin/dp/0321127420)

half-sync-half-async/index.md

@@ -30,3 +30,4 @@ degrading execution efficiency.
 **Credits:**
 
 * [Douglas C. Schmidt and Charles D. Cranor - Half Sync/Half Async](http://www.cs.wustl.edu/~schmidt/PDF/PLoP-95.pdf)
+* [Pattern Oriented Software Architecture Vol I-V](http://www.amazon.com/Pattern-Oriented-Software-Architecture-Volume-Patterns/dp/0471958697)

intercepting-filter/index.md

@@ -18,6 +18,11 @@ post-processing to requests from a client to a target
 * a system should do the authentication/ authorization/ logging or tracking of request and then pass the requests to corresponding handlers 
 * you want a modular approach to configuring pre-processing and post-processing schemes
 
+**Real world examples:**
+
+* [Struts 2 - Interceptors](https://struts.apache.org/docs/interceptors.html)
+
 **Credits:**
 
 * [TutorialsPoint - Intercepting Filter](http://www.tutorialspoint.com/design_pattern/intercepting_filter_pattern.htm)
+* [Presentation Tier Patterns](http://www.javagyan.com/tutorials/corej2eepatterns/presentation-tier-patterns)

layers/index.md

@@ -17,3 +17,8 @@ tags: Java
 * you want clearly divide software responsibilities into differents parts of the program
 * you want to prevent a change from propagating throughout the application
 * you want to make your application more maintainable and testable
+
+**Credits:**
+
+* [Pattern Oriented Software Architecture Vol I-V](http://www.amazon.com/Pattern-Oriented-Software-Architecture-Volume-Patterns/dp/0471958697)
+

model-view-controller/index.md

@@ -21,3 +21,5 @@ display.
 **Credits:**
 
 * [Trygve Reenskaug - Model-view-controller](http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller)
+* [J2EE Design Patterns](http://www.amazon.com/J2EE-Design-Patterns-William-Crawford/dp/0596004273/ref=sr_1_2)
+* [Patterns of Enterprise Application Architecture](http://www.amazon.com/Patterns-Enterprise-Application-Architecture-Martin/dp/0321127420)

model-view-presenter/index.md

@@ -17,3 +17,7 @@ situations
 
 * when you want to improve the "Separation of Concerns" principle in presentation logic
 * when a user interface development and testing is necessary.
+
+**Real world examples:**
+
+* [MVP4J](https://github.com/amineoualialami/mvp4j)

reactor/index.md

@@ -26,5 +26,6 @@ tags:
 **Credits**
 
 * [Douglas C. Schmidt - Reactor](https://www.dre.vanderbilt.edu/~schmidt/PDF/Reactor.pdf)
+* [Pattern Oriented Software Architecture Vol I-V](http://www.amazon.com/Pattern-Oriented-Software-Architecture-Volume-Patterns/dp/0471958697)
 * [Doug Lea - Scalable IO in Java](http://gee.cs.oswego.edu/dl/cpjslides/nio.pdf)
 * [Netty](http://netty.io/)

service-layer/index.md

@@ -24,3 +24,4 @@ its business logic. The Service Layer fulfills this role.
 **Credits:**
 
 * [Martin Fowler - Service Layer](http://martinfowler.com/eaaCatalog/serviceLayer.html)
+* [Patterns of Enterprise Application Architecture](http://www.amazon.com/Patterns-Enterprise-Application-Architecture-Martin/dp/0321127420)

service-locator/index.md

@@ -10,7 +10,7 @@ tags: Java
 **Intent:** Encapsulate the processes involved in obtaining a service with a
 strong abstraction layer.
 
-![alt text](./etc/service-locator.png "Proxy")
+![alt text](./etc/service-locator.png "Service Locator")
 
 **Applicability:** The service locator pattern is applicable whenever we want
 to locate/fetch various services using JNDI which, typically, is a redundant
@@ -26,3 +26,7 @@ improves the performance of application to great extent.
 * when network hits are expensive and time consuming
 * lookups of services are done quite frequently
 * large number of services are being used
+
+**Credits:**
+
+* [J2EE Design Patterns](http://www.amazon.com/J2EE-Design-Patterns-William-Crawford/dp/0596004273/ref=sr_1_2)