play.classloading.enhancers

Class Enhancer

java.lang.Object

play.classloading.enhancers.Enhancer

Direct Known Subclasses:

ContinuationEnhancer, ControllersEnhancer, JPAEnhancer, LocalvariablesNamesEnhancer, MailerEnhancer, PropertiesEnhancer, SigEnhancer

public abstract class Enhancer
extends java.lang.Object

Enhancer support

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Enhancer.ApplicationClassesClasspath Dumb classpath implementation for javassist hacking

Field Summary

Fields

Modifier and Type	Field and Description
protected javassist.ClassPool	classPool

Constructor Summary

Constructors

Constructor and Description
Enhancer()

Method Summary

Modifier and Type	Method and Description
protected static void	createAnnotation(javassist.bytecode.AnnotationsAttribute attribute, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType) Create a new annotation to be dynamically inserted in the byte code.
protected static void	createAnnotation(javassist.bytecode.AnnotationsAttribute attribute, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType, java.util.Map<java.lang.String,javassist.bytecode.annotation.MemberValue> members) Create a new annotation to be dynamically inserted in the byte code.
abstract void	enhanceThisClass(ApplicationClasses.ApplicationClass applicationClass) The magic happen here...
protected static javassist.bytecode.AnnotationsAttribute	getAnnotations(javassist.CtClass ctClass) Retrieve all class annotations.
protected static javassist.bytecode.AnnotationsAttribute	getAnnotations(javassist.CtField ctField) Retrieve all field annotations.
protected static javassist.bytecode.AnnotationsAttribute	getAnnotations(javassist.CtMethod ctMethod) Retrieve all method annotations.
protected boolean	hasAnnotation(javassist.CtClass ctClass, java.lang.String annotation) Test if a class has the provided annotation
protected boolean	hasAnnotation(javassist.CtField ctField, java.lang.String annotation) Test if a field has the provided annotation
protected boolean	hasAnnotation(javassist.CtMethod ctMethod, java.lang.String annotation) Test if a method has the provided annotation
javassist.CtClass	makeClass(ApplicationClasses.ApplicationClass applicationClass) Construct a javassist CtClass from an application class.
static javassist.ClassPool	newClassPool()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

classPool

protected javassist.ClassPool classPool

Constructor Detail

Enhancer

public Enhancer()

Method Detail

newClassPool

public static javassist.ClassPool newClassPool()

makeClass

public javassist.CtClass makeClass(ApplicationClasses.ApplicationClass applicationClass)
                            throws java.io.IOException

Construct a javassist CtClass from an application class.

Parameters:

applicationClass - The application class to construct

Returns:

The javassist CtClass construct from the application class

Throws:

java.io.IOException - if problem occurred during construction

enhanceThisClass

public abstract void enhanceThisClass(ApplicationClasses.ApplicationClass applicationClass)
                               throws java.lang.Exception

The magic happen here...

Parameters:

applicationClass - The application class to construct

Throws:

java.lang.Exception - if problem occurred during construction

hasAnnotation

protected boolean hasAnnotation(javassist.CtClass ctClass,
                                java.lang.String annotation)
                         throws java.lang.ClassNotFoundException

Test if a class has the provided annotation

Parameters:

ctClass - the javassist class representation

annotation - fully qualified name of the annotation class eg."javax.persistence.Entity"

Returns:

true if class has the annotation

Throws:

java.lang.ClassNotFoundException - if class not found

hasAnnotation

protected boolean hasAnnotation(javassist.CtField ctField,
                                java.lang.String annotation)
                         throws java.lang.ClassNotFoundException

Test if a field has the provided annotation

Parameters:

ctField - the javassist field representation

annotation - fully qualified name of the annotation class eg."javax.persistence.Entity"

Returns:

true if field has the annotation

Throws:

java.lang.ClassNotFoundException - if class not found

hasAnnotation

protected boolean hasAnnotation(javassist.CtMethod ctMethod,
                                java.lang.String annotation)
                         throws java.lang.ClassNotFoundException

Test if a method has the provided annotation

Parameters:

ctMethod - the javassist method representation

annotation - fully qualified name of the annotation class eg."javax.persistence.Entity"

Returns:

true if field has the annotation

Throws:

java.lang.ClassNotFoundException - if class not found

createAnnotation

protected static void createAnnotation(javassist.bytecode.AnnotationsAttribute attribute,
                                       java.lang.Class<? extends java.lang.annotation.Annotation> annotationType,
                                       java.util.Map<java.lang.String,javassist.bytecode.annotation.MemberValue> members)

Create a new annotation to be dynamically inserted in the byte code.

Parameters:

attribute - annotation attribute

annotationType - Annotation

members - Member of the annotation

createAnnotation

protected static void createAnnotation(javassist.bytecode.AnnotationsAttribute attribute,
                                       java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)

Create a new annotation to be dynamically inserted in the byte code.

Parameters:

attribute - annotation attribute

annotationType - Annotation

getAnnotations

protected static javassist.bytecode.AnnotationsAttribute getAnnotations(javassist.CtClass ctClass)

Retrieve all class annotations.

Parameters:

ctClass - The given class

Returns:

All class annotations

getAnnotations

protected static javassist.bytecode.AnnotationsAttribute getAnnotations(javassist.CtField ctField)

Retrieve all field annotations.

Parameters:

ctField - The given field

Returns:

All field annotations.

getAnnotations

protected static javassist.bytecode.AnnotationsAttribute getAnnotations(javassist.CtMethod ctMethod)

Retrieve all method annotations.

Parameters:

ctMethod - The given methods

Returns:

all method annotations.