Play with Play!, JEEconf 05/19/2012

1. Play with Play!
Anton Naumov
email: anton.naumow@gmail.com
linkedin: http://ua.linkedin.com/in/antonnaumov
Monday, May 21, 12

2. Who am I?
Java Engineer
11+ years in Java
development
Photographer
Sci-Fi addicted
Monday, May 21, 12

3. RIA Frameworks
?
Monday, May 21, 12

4. RIA Frameworks
Ruby -> Rails
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5. RIA Frameworks
Python -> Django
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6. RIA Frameworks
Scala -> Play!
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7. RIA Frameworks
PHP -> PHP
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8. RIA Frameworks
Java ->
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9. RIA Frameworks
Java -> ?
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10. RIA Frameworks
Java -> JSF?
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11. RIA Frameworks
JSF?
Java -> GWT?
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12. RIA Frameworks
JSF? GWT?
Java -> Play!
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13. Play! Features
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14. Play! Features
NO compiling, NO redeployment
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15. Play! Features
NO compiling, NO redeployment
MVC out of the box
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16. Play! Features
NO compiling, NO redeployment
MVC out of the box
Unit & Functional test infrastructure
Monday, May 21, 12

17. Play! Features
NO compiling, NO redeployment
MVC out of the box
Unit & Functional test infrastructure
Dependency management
Monday, May 21, 12

18. Play! Features
NO compiling, NO redeployment
MVC out of the box
Unit & Functional test infrastructure
Dependency management
Simple text and YAML configuration
Monday, May 21, 12

19. Play! Features
NO compiling, NO redeployment
MVC out of the box
Unit & Functional test infrastructure
Dependency management
Simple text and YAML configuration
Modules
Monday, May 21, 12

20. Play! Features
NO compiling, NO redeployment
MVC out of the box
Unit & Functional test infrastructure
Dependency management
Simple text and YAML configuration
Modules
Cloud hosting support
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21. Play! Anatomy
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22. What You Save Is
What You Get
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23. What You Save Is
What You Get
Eclipse Java Compiler
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24. What You Save Is
What You Get
Eclipse Java Compiler
Custom ClassLoader
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25. What You Save Is
What You Get
Eclipse Java Compiler
Custom ClassLoader
Javassist
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26. What You Save Is
What You Get
Eclipse Java Compiler
Custom ClassLoader
Javassist
Netty
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27. Model
package
models;
import
play.db.jpa.Model;
import
javax.persistence.Entity;
@Entity
public
class
User
extends
Model
{
@Required
public
String
firstName;
}
Monday, May 21, 12

28. Model
package
models;
import
play.db.jpa.Model;
JPA 2.0 import
javax.persistence.Entity;
@Entity
public
class
User
extends
Model
{
@Required
public
String
firstName;
}
Monday, May 21, 12

29. Model
package
models;
import
play.db.jpa.Model;
JPA 2.0 import
javax.persistence.Entity;
play.db.jpa.Model @Entity
public
class
User
extends
Model
{
@Required
public
String
firstName;
}
Monday, May 21, 12

30. Model
package
models;
import
play.db.jpa.Model;
JPA 2.0 import
javax.persistence.Entity;
play.db.jpa.Model @Entity
public
class
User
extends
Public fields Model
{
@Required
public
String
firstName;
}
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31. Model
Simplified Queries
User.find("byEmailAndPassword",
"vpupkin@gmail.com",
"s3cr#t");
JPQL Queries
User.find("SELECT
u
FROM
User
u
WHERE
u.email
LIKE
?1",
"vpupkin%");
Monday, May 21, 12

32. Controller
package
controllers;
import
play.*;
import
play.mvc.*;
import
java.util.*;
import
models.*;
public
class
Application
extends
Controller
{
public
static
void
index()
{
render();
}
}
Monday, May 21, 12

33. Controller
package
controllers;
import
play.*;
import
play.mvc.*;
import
java.util.*;
public static import
models.*;
methods
public
class
Application
extends
Controller
{
public
static
void
index()
{
render();
}
}
Monday, May 21, 12

34. Controller
package
controllers;
import
play.*;
import
play.mvc.*;
import
java.util.*;
public static import
models.*;
methods
public
class
Application
extends
Controller
{
play.mvc.Controller
public
static
void
index()
{
render();
}
}
Monday, May 21, 12

35. Controller
package
controllers;
import
play.*;
import
play.mvc.*;
import
java.util.*;
public static import
models.*;
methods
public
class
Application
extends
Controller
{
play.mvc.Controller
public
static
void
index()
render method {
render();
}
}
Monday, May 21, 12

36. Controller
Binding
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37. Controller
Binding
public
static
void
show(Long[]
id)
{
...
}
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38. Controller
Binding
public
static
void
show(Long[]
id)
{
...
}
public
static
void
show(List<Long>
id)
{
...
}
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39. Controller
Binding
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40. Controller
Binding
public
static
void
update(@As("dd/MM/yyyy")
Date
updatedAt)
{
...
}
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41. Controller
Binding
public
static
void
update(@As("dd/MM/yyyy")
Date
updatedAt)
{
...
}
public
static
void
update(@As(",")
List<String>
items)
{
...
}
Monday, May 21, 12

42. Controller
Binding
public
static
void
update(@As("dd/MM/yyyy")
Date
updatedAt)
{
...
}
public
static
void
update(@As(",")
List<String>
items)
{
...
}
public
static
void
anyAction(@As(binder=Binder.class)
String
name)
{
...
}
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43. Controller
Workflow
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44. Controller
Workflow
@Before(only={"login","logout"})
static
void
doSomething()
{
...
}
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45. Controller
Workflow
@Before(only={"login","logout"})
static
void
doSomething()
{
...
}
@After
static
void
log()
{
Logger.info("Action
executed
...");
}
Monday, May 21, 12

46. Controller
Workflow
@Before(only={"login","logout"})
static
void
doSomething()
{
...
}
@After
static
void
log()
{
Logger.info("Action
executed
...");
}
@Finally
static
void
log()
{
Logger.info("Response
contains
:
"
+
response.out);
}
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47. Controller
Workflow
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48. Controller
Workflow
@Catch(value
=
Throwable.class,
priority
=
1)
public
static
void
logThrowable(Throwable
t)
{
...
}
Monday, May 21, 12

49. Controller
Workflow
@Catch(value
=
Throwable.class,
priority
=
1)
public
static
void
logThrowable(Throwable
t)
{
...
}
@With(Secure.class)
public
class
Admin
extends
Controller
{
...
}
Monday, May 21, 12

50. View
...
<title>#{get
'title'
/}</
title>
...
#{get
'moreStyles'
/}
...
<script
src="@{'/public/
javascripts/jquery-­‐1.6.4.min.js'}"
Groovy type="text/javascript"
charset="$
{_response_encoding}"></script>
#{get
'moreScripts'
/}
</head>
<body>
#{doLayout
/}
</body>
...
Monday, May 21, 12

51. Testing
Unit Tests
import
play.test.*;
import
org.junit.*;
public
class
UsersTest
extends
UnitTest
{
@Test
public
void
aTest()
{
...
}
@Test
public
void
testUsers()
{
...
}
}
Monday, May 21, 12

52. Testing
Functional Tests
import
play.test.*;
import
play.mvc.*;
import
play.mvc.Http.*;
import
org.junit.*;
public
class
ApplicationTest
extends
FunctionalTest
{
@Test
public
void
testTheHomePage()
{
Response
response
=
GET("/");
assertStatus(200,
response);
}
}
Monday, May 21, 12

53. Testing
Selenium
#{selenium
'Test
security'}
clearSession()
open('/admin')
assertTextPresent('Login')
type('login',
'admin')
type('password',
'secret')
clickAndWait('signin')
assertText('success',
'Welcom
admin!')
#{/selenium}
Monday, May 21, 12

54. Dependency
Management
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55. Dependency
Management
#
Application
dependencies
require:
YAML
-­‐
play
1.2.4
-­‐
play
-­‐>
crud
-­‐
play
-­‐>
secure
repositories:
-­‐
jboss:
type:
iBiblio
artifact:
"http://
repository.jboss.org/nexus/
content/groups/public-­‐jboss/"
contains:
-­‐
org.drools
-­‐>
*
Monday, May 21, 12

56. Dependency
Management
#
Application
dependencies
require:
YAML
-­‐
play
1.2.4
-­‐
play
-­‐>
crud
-­‐
play
-­‐>
secure
Ant Ivy
repositories:
-­‐
jboss:
type:
iBiblio
artifact:
"http://
repository.jboss.org/nexus/
content/groups/public-­‐jboss/"
contains:
-­‐
org.drools
-­‐>
*
Monday, May 21, 12

57. Dependency
Management
#
Application
dependencies
require:
YAML
-­‐
play
1.2.4
-­‐
play
-­‐>
crud
-­‐
play
-­‐>
secure
Ant Ivy
repositories:
Repositories
-­‐
jboss:
type:
iBiblio
artifact:
"http://
repository.jboss.org/nexus/
content/groups/public-­‐jboss/"
contains:
-­‐
org.drools
-­‐>
*
Monday, May 21, 12

58. Dependency
Management
#
Application
dependencies
require:
YAML
-­‐
play
1.2.4
-­‐
play
-­‐>
crud
-­‐
play
-­‐>
secure
Ant Ivy
repositories:
Repositories
-­‐
jboss:
type:
iBiblio
artifact:
"http://
Deps & Sync repository.jboss.org/nexus/
content/groups/public-­‐jboss/"
contains:
-­‐
org.drools
-­‐>
*
Monday, May 21, 12

59. Configuration
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60. Configuration
application.mode=dev
%prod.application.mode=prod
Application jpda.port=8000
java.source=1.6
db=mem
%prod.db=postgres://user:pwd@host/
database
%test.db.url=jdbc:h2:mem:play;MODE=MYSQL
;LOCK_MODE=0
Monday, May 21, 12

61. Configuration
GET
/
Application.index
GET
/favicon.ico
404
Application GET
/public/
staticDir:public
*
/admin
module:crud
*
/
module:secure
Routing *
/{controller}/{action}
{controller}.
{action}
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62. Modules
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63. Modules
CRUD
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64. Modules
CRUD
required:
-­‐
play
-­‐>
crud
Monday, May 21, 12

65. Modules
CRUD
required:
-­‐
play
-­‐>
crud *
/admin
module:crud
Monday, May 21, 12

66. Modules
CRUD
required:
-­‐
play
-­‐>
crud *
/admin
module:crud
package
controllers;
public
class
Users
extends
CURD
{
}
Monday, May 21, 12

67. Modules
Secure
Monday, May 21, 12

68. Modules
Secure
required:
-­‐
play
-­‐>
secure
Monday, May 21, 12

69. Modules
Secure
required:
-­‐
play
-­‐>
secure *
/
module:secure
Monday, May 21, 12

70. Modules
Secure
required:
-­‐
play
-­‐>
secure *
/
module:secure
package
controllers;
import
play.mvc.With;
@With(Secure.class)
public
class
Users
extends
CURD
{
}
Monday, May 21, 12

71. Modules
Custom Module
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72. Modules
Custom Module
Routing
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73. Modules
Custom Module
Routing
MVC classes
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74. Modules
Custom Module
Routing
MVC classes
Dependencies
Monday, May 21, 12

75. Modules
Custom Module
Routing
MVC classes
Dependencies
ZIP packaging
Monday, May 21, 12

76. Modules
Custom Module
Routing
MVC classes
Dependencies
ZIP packaging
Monday, May 21, 12

77. Modules
Custom Module
Routing NO configuration
MVC classes
Dependencies
ZIP packaging
Monday, May 21, 12

78. Modules
Custom Module
Routing NO configuration
MVC classes NO tests
Dependencies
ZIP packaging
Monday, May 21, 12

79. Modules
Custom Module
Routing NO configuration
MVC classes NO tests
Dependencies NO dependencies
ZIP packaging
Monday, May 21, 12

80. Let it Play!
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81. Clouds
Heroku
CloudBees
PlayApp
Google AppEngine
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82. Disadvantages
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83. Disadvantages
Custom Modules
management
Monday, May 21, 12

84. Disadvantages
Custom Modules
management
Precompiling
requirements
Monday, May 21, 12

85. Disadvantages
Custom Modules
management
Precompiling
requirements
Cloud deployment
limitations
Monday, May 21, 12

86. Disadvantages
Custom Modules Configuration
management management
limitations
Precompiling
requirements
Cloud deployment
limitations
Monday, May 21, 12

87. Disadvantages
Custom Modules Configuration
management management
limitations
Precompiling
requirements Technology stack
limitations
Cloud deployment
limitations
Monday, May 21, 12

88. Disadvantages
Custom Modules Configuration
management management
limitations
Precompiling
requirements Technology stack
limitations
Cloud deployment
limitations Lack of
documentation
Monday, May 21, 12

89. Alternatives
Monday, May 21, 12

90. Alternatives
Pure JPA 2.0
Monday, May 21, 12

91. Alternatives
Pure JPA 2.0
NamedQueries
Monday, May 21, 12

92. Alternatives
Pure JPA 2.0
NamedQueries
Spring 3.1
Monday, May 21, 12

93. Alternatives
Pure JPA 2.0
NamedQueries
Spring 3.1
Spring Security
Monday, May 21, 12

94. Alternatives
Pure JPA 2.0 Maven
NamedQueries
Spring 3.1
Spring Security
Monday, May 21, 12

95. Alternatives
Pure JPA 2.0 Maven
NamedQueries TestNG
Spring 3.1
Spring Security
Monday, May 21, 12

96. Alternatives
Pure JPA 2.0 Maven
NamedQueries TestNG
Spring 3.1 DBUnit
Spring Security
Monday, May 21, 12

97. Take Away
Monday, May 21, 12

98. Thanks!
Anton Naumov
email: anton.naumow@gmail.com
linkedin: http://ua.linkedin.com/in/antonnaumov
Monday, May 21, 12