Source Code Cross Referenced for Reusable.java in  » Development » Javolution » javolution » lang » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Development » Javolution » javolution.lang 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
03:         * Copyright (C) 2006 - Javolution (http://javolution.org/)
04:         * All rights reserved.
05:         * 
06:         * Permission to use, copy, modify, and distribute this software is
07:         * freely granted, provided that this notice is preserved.
08:         */
09:        package javolution.lang;
10:
11:        /**
12:         * <p> This interfaces identifies mutable objects capable of being used again
13:         *     or repeatedly; once {@link #reset reset}, reusable objects behave as if
14:         *     they were brand-new.</p>
15:         *      
16:         * <p> Reusable instances should not allocate new internal objects after  
17:         *     creation except for the purpose of increasing their internal capacities. 
18:         *     In such case the new allocations have to be performed in the same memory
19:         *     areas as the reusable objects themselves (necessary to avoid memory leaks
20:         *     or memory clashes when running on 
21:         *     <a href="https://rtsj.dev.java.net/">RTSJ</a> VMs). For example:[code]
22:         *     import javax.realtime.MemoryArea;
23:         *     public class Targets implements Reusable {
24:         *         private Target[] _targets = new Target[32];
25:         *         private int _count;
26:         *         public void add(Target target) {
27:         *             if (_count >= _targets.length) capacityOverflow(); 
28:         *             _targets[_count++] = target;
29:         *         }
30:         *         private void capacityOverflow() {
31:         *              MemoryArea.getMemoryArea(this).executeInArea(new Runnable() {
32:         *                  public void run() {
33:         *                       Target[] tmp = new Target[_targets.length * 2];
34:         *                       System.arraycopy(_targets, 0, tmp, 0, _count);
35:         *                       _targets = tmp;
36:         *                  }
37:         *              });
38:         *         }
39:         *         ...
40:         *     }[/code]</p>
41:         *     
42:         * <p> Instances of this class can safely reside in permanent memory 
43:         *     (e.g. <code>static</code> members) or be an integral part of a
44:         *     higher level component. For example:[code]
45:         *     public class XMLFormat {
46:         *          // RTSJ Unsafe! Memory leaks (when entries removed) or IllegalAssignmentError (when new entries while in ScopedArea).   
47:         *          static HashMap<Class, XMLFormat> ClassToFormat = HashMap<Class, XMLFormat>();
48:         *             
49:         *          // RTSJ safe! FastMap is Reusable. Removed entries are internally recycled, new entries are in ImmortalMemory.
50:         *          static FastMap<Class, XMLFormat> ClassToFormat = FastMap<Class, XMLFormat>();
51:         *     }[/code]</p>
52:         *     
53:         * <p> Reusable objects can also be allocated on the stack providing that
54:         *     their {@link javolution.context.ObjectFactory factory} cleanup 
55:         *     method calls the {@link #reset reset} method. For example:[code]
56:         *     public class Foo implements Reusable {
57:         *         private static final ObjectFactory<Foo> FACTORY = new ObjectFactory<Foo>() {
58:         *             protected Foo create() {
59:         *                 return new Foo();
60:         *             }
61:         *             protected void cleanup(Foo obj) {
62:         *                 obj.reset();
63:         *             }
64:         *         };
65:         *         public static Foo newInstance() {
66:         *             return FACTORY.object(); // On the "stack" when executing in a StackContext.
67:         *         } 
68:         *         ...
69:         *     }[/code]</p>
70:         *        
71:         * @author  <a href="mailto:jean-marie@dautelle.com">Jean-Marie Dautelle</a>
72:         * @version 3.7, January 1, 2006
73:         */
74:        public interface Reusable {
75:
76:            /**
77:             * Resets the internal state of this object to its default values.
78:             */
79:            void reset();
80:
81:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.