play.utils

Class Java

java.lang.Object

play.utils.Java

public class Java
extends java.lang.Object

Java utils

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Java.FieldWrapper Field accessor set and get value for a property, using the getter/setter when it exists or direct access otherwise. final, native or static properties are safely ignored

Field Summary

Fields

Modifier and Type	Field and Description
protected static play.utils.JavaWithCaching	_javaWithCaching
protected static ApplicationClassloaderState	_lastKnownApplicationClassloaderState

Constructor Summary

Constructors

Constructor and Description
Java()

Method Summary

Modifier and Type	Method and Description
static java.lang.Object	deserialize(byte[] b)
static java.lang.String[]	extractInfosFromByteCode(byte[] code)
static java.lang.Object	extractUnderlyingCallable(java.util.concurrent.FutureTask<?> futureTask) Try to discover what is hidden under a FutureTask (hack) Field sync first, if not present will try field callable
static java.util.List<java.lang.reflect.Method>	findAllAnnotatedMethods(java.lang.Class<?> clazz, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType) Find all annotated method from a class
static java.util.List<java.lang.reflect.Method>	findAllAnnotatedMethods(java.util.List<java.lang.Class> classes, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType) Find all annotated method from a class
static void	findAllFields(java.lang.Class clazz, java.util.Set<java.lang.reflect.Field> found)
static Java.FieldWrapper	getFieldWrapper(java.lang.reflect.Field field)
protected static play.utils.JavaWithCaching	getJavaWithCaching()
static java.lang.Object	invokeChildOrStatic(java.lang.Class<?> clazz, java.lang.String method, java.lang.Object... args)
static java.lang.Object	invokeStatic(java.lang.Class<?> clazz, java.lang.String method) Invoke a static method
static java.lang.Object	invokeStatic(java.lang.Class<?> clazz, java.lang.String method, java.lang.Object... args) Invoke a static method with args
static java.lang.Object	invokeStatic(java.lang.reflect.Method method, java.util.Map<java.lang.String,java.lang.String[]> args)
static java.lang.Object	invokeStatic(java.lang.reflect.Method method, java.lang.Object[] args)
static java.lang.Object	invokeStatic(java.lang.String clazz, java.lang.String method)
static java.lang.Object	invokeStaticOrParent(java.lang.Class<?> clazz, java.lang.String method, java.lang.Object... args)
static java.lang.String[]	parameterNames(java.lang.reflect.Method method) Retrieve parameter names of a method
static java.lang.String	rawJavaType(java.lang.Class clazz)
static java.lang.String	rawMethodSignature(java.lang.reflect.Method method)
static byte[]	serialize(java.lang.Object o)

Methods inherited from class java.lang.Object

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

Field Detail

_javaWithCaching

protected static play.utils.JavaWithCaching _javaWithCaching

_lastKnownApplicationClassloaderState

protected static ApplicationClassloaderState _lastKnownApplicationClassloaderState

Constructor Detail

Java

public Java()

Method Detail

getJavaWithCaching

protected static play.utils.JavaWithCaching getJavaWithCaching()

extractInfosFromByteCode

public static java.lang.String[] extractInfosFromByteCode(byte[] code)

extractUnderlyingCallable

public static java.lang.Object extractUnderlyingCallable(java.util.concurrent.FutureTask<?> futureTask)

Try to discover what is hidden under a FutureTask (hack)

Field sync first, if not present will try field callable

Parameters:

futureTask - The given tack

Returns:

Field sync first, if not present will try field callable

invokeStatic

public static java.lang.Object invokeStatic(java.lang.Class<?> clazz,
                                            java.lang.String method)
                                     throws java.lang.Exception

Invoke a static method

Parameters:

clazz - The class

method - The method name

Returns:

The result

Throws:

java.lang.Exception - if problem occurred during invoking

invokeStatic

public static java.lang.Object invokeStatic(java.lang.String clazz,
                                            java.lang.String method)
                                     throws java.lang.Exception

Throws:

java.lang.Exception

invokeStatic

public static java.lang.Object invokeStatic(java.lang.Class<?> clazz,
                                            java.lang.String method,
                                            java.lang.Object... args)
                                     throws java.lang.Exception

Invoke a static method with args

Parameters:

clazz - The class

method - The method name

args - Arguments

Returns:

The result

Throws:

java.lang.Exception - if problem occurred during invoking

invokeStaticOrParent

public static java.lang.Object invokeStaticOrParent(java.lang.Class<?> clazz,
                                                    java.lang.String method,
                                                    java.lang.Object... args)
                                             throws java.lang.Exception

Throws:

java.lang.Exception

invokeChildOrStatic

public static java.lang.Object invokeChildOrStatic(java.lang.Class<?> clazz,
                                                   java.lang.String method,
                                                   java.lang.Object... args)
                                            throws java.lang.Exception

Throws:

java.lang.Exception

invokeStatic

public static java.lang.Object invokeStatic(java.lang.reflect.Method method,
                                            java.util.Map<java.lang.String,java.lang.String[]> args)
                                     throws java.lang.Exception

Throws:

java.lang.Exception

invokeStatic

public static java.lang.Object invokeStatic(java.lang.reflect.Method method,
                                            java.lang.Object[] args)
                                     throws java.lang.Exception

Throws:

java.lang.Exception

parameterNames

public static java.lang.String[] parameterNames(java.lang.reflect.Method method)
                                         throws java.lang.Exception

Retrieve parameter names of a method

Parameters:

method - The given method

Returns:

Array of parameter names

Throws:

java.lang.Exception - if problem occurred during invoking

rawMethodSignature

public static java.lang.String rawMethodSignature(java.lang.reflect.Method method)

rawJavaType

public static java.lang.String rawJavaType(java.lang.Class clazz)

findAllAnnotatedMethods

public static java.util.List<java.lang.reflect.Method> findAllAnnotatedMethods(java.lang.Class<?> clazz,
                                                                               java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)

Find all annotated method from a class

Parameters:

clazz - The class

annotationType - The annotation class

Returns:

A list of method object

findAllAnnotatedMethods

public static java.util.List<java.lang.reflect.Method> findAllAnnotatedMethods(java.util.List<java.lang.Class> classes,
                                                                               java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)

Find all annotated method from a class

Parameters:

classes - The classes

annotationType - The annotation class

Returns:

A list of method object

findAllFields

public static void findAllFields(java.lang.Class clazz,
                                 java.util.Set<java.lang.reflect.Field> found)

getFieldWrapper

public static Java.FieldWrapper getFieldWrapper(java.lang.reflect.Field field)

serialize

public static byte[] serialize(java.lang.Object o)
                        throws java.io.IOException

Throws:

java.io.IOException

deserialize

public static java.lang.Object deserialize(byte[] b)
                                    throws java.lang.Exception

Throws:

java.lang.Exception