Javassist 3.30.2-GA · javassist.tools.reflect.ClassMetaobject

Modifier and Type	Field and Description
private Constructor<?>[]	constructors
private Class<?>	javaClass
pack-priv static final String	methodPrefix The base-level methods controlled by a metaobject are renamed so that they begin with `methodPrefix "_m_"`.
pack-priv static final int	methodPrefixLen
private Method[]	methods
private static final long	serialVersionUID default serialVersionUID
public static boolean	useContextClassLoader Specifies how a `java.lang.Class` object is loaded.

Access	Constructor and Description
public	ClassMetaobject(String[] `params[0]` is the name of the class of the reflective objects. params) Constructs a `ClassMetaobject`.

Method Summary

Modifier and Type	Method and Description
private Class<?>	getClassObject(String name)
public final Class<?>	getJavaClass() Obtains the `java.lang.Class` representing this class.
public final Method	getMethod(int the identifier index given to `trapMethodcall()` etc. identifier) Returns the `java.lang.reflect.Method` object representing the method specified by `identifier`.
public final int	Returns: the identifier index of the original method getMethodIndex(String The original name of the reflected method originalName, Class<?>[] array of Class specifying the method signature argTypes) Returns the identifier index of the method, as identified by its original name.
public final String	getMethodName(int identifier) Returns the name of the method specified by `identifier`.
public final String	getName() Obtains the name of this class.
public final Class<?>[]	getParameterTypes(int identifier) Returns an array of `Class` objects representing the formal parameter types of the method specified by `identifier`.
public final Method[]	getReflectiveMethods() Returns an array of the methods defined on the given reflective object.
public final Class<?>	getReturnType(int identifier) Returns a `Class` objects representing the return type of the method specified by `identifier`.
public static Object	invoke(Object target, int identifier, Object[] args) Invokes a method whose name begins with `methodPrefix "_m_"` and the identifier.
public final boolean	isInstance(Object obj) Returns true if `obj` is an instance of this class.
public final Object	newInstance(Object[] the arguments passed to the constructor. args) Creates a new instance of the class.
private void	readObject(ObjectInputStream in)
public Object	trapFieldRead(String name) Is invoked when `static` fields of the base-level class are read and the runtime system intercepts it.
public void	trapFieldWrite(String name, Object value) Is invoked when `static` fields of the base-level class are modified and the runtime system intercepts it.
public Object	trapMethodcall(int identifier, Object[] args) Is invoked when `static` methods of the base-level class are called and the runtime system intercepts it.
private void	writeObject(ObjectOutputStream out)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

constructors	back to summary
private Constructor<?>[] constructors

javaClass	back to summary
private Class<?> javaClass

methodPrefix	back to summary
pack-priv static final String methodPrefix The base-level methods controlled by a metaobject are renamed so that they begin with `methodPrefix "_m_"`.

methodPrefixLen	back to summary
pack-priv static final int methodPrefixLen

methods	back to summary
private Method[] methods

serialVersionUID	back to summary
private static final long serialVersionUID default serialVersionUID

useContextClassLoader back to summary

useContextClassLoader	back to summary
public static boolean useContextClassLoader Specifies how a `java.lang.Class` object is loaded. If true, it is loaded by: Thread.currentThread().getContextClassLoader().loadClass() If false, it is loaded by `Class.forName()`. The default value is false.

public static boolean useContextClassLoader

Specifies how a java.lang.Class object is loaded.

If true, it is loaded by:

Thread.currentThread().getContextClassLoader().loadClass()

If false, it is loaded by Class.forName(). The default value is false.

Constructor Detail

ClassMetaobject back to summary

ClassMetaobject	back to summary
public ClassMetaobject(String[] params) Constructs a `ClassMetaobject`. Parameters params:String[] `params[0]` is the name of the class of the reflective objects.

public ClassMetaobject(String[] params)

Constructs a ClassMetaobject.

Parameters

params:String[]: params[0] is the name of the class of the reflective objects.

Method Detail

getClassObject	back to summary
private Class<?> getClassObject(String name) throws ClassNotFoundException

getJavaClass	back to summary
public final Class<?> getJavaClass() Obtains the `java.lang.Class` representing this class.

getMethod back to summary

getMethod	back to summary
public final Method getMethod(int identifier) Returns the `java.lang.reflect.Method` object representing the method specified by `identifier`. Note that the actual method returned will be have an altered, reflective name i.e. `_m_2_..`. Parameters identifier:int the identifier index given to `trapMethodcall()` etc. See Also `Metaobject#trapMethodcall(int, Object[])`, `trapMethodcall(int, Object[])`

public final Method getMethod(int identifier)

Returns the java.lang.reflect.Method object representing the method specified by identifier.

Note that the actual method returned will be have an altered, reflective name i.e. _m_2_...

Parameters

identifier:int: the identifier index given to trapMethodcall() etc.

getMethodIndex back to summary

getMethodIndex	back to summary
public final int getMethodIndex(String originalName, Class<?>[] argTypes) throws NoSuchMethodException Returns the identifier index of the method, as identified by its original name. This method is useful, in conjuction with `ClassMetaobject#getMethod(int)`, to obtain a quick reference to the original method in the reflected class (i.e. not the proxy method), using the original name of the method. Written by Brett Randall and Shigeru Chiba. Parameters originalName:String The original name of the reflected method argTypes:Class<?>[] array of Class specifying the method signature Returns:int the identifier index of the original method Exceptions NoSuchMethodException: if the method does not exist See Also `ClassMetaobject#getMethod(int)`

public final int getMethodIndex(String originalName, Class<?>[] argTypes) throws NoSuchMethodException

Returns the identifier index of the method, as identified by its original name.

This method is useful, in conjuction with ClassMetaobject#getMethod(int), to obtain a quick reference to the original method in the reflected class (i.e. not the proxy method), using the original name of the method.

Written by Brett Randall and Shigeru Chiba.

Parameters

originalName:String: The original name of the reflected method
argTypes:Class<?>[]: array of Class specifying the method signature

Returns:int

the identifier index of the original method

Exceptions

NoSuchMethodException:: if the method does not exist

See Also

ClassMetaobject#getMethod(int)

getMethodName	back to summary
public final String getMethodName(int identifier) Returns the name of the method specified by `identifier`.

getName	back to summary
public final String getName() Obtains the name of this class.

getParameterTypes	back to summary
public final Class<?>[] getParameterTypes(int identifier) Returns an array of `Class` objects representing the formal parameter types of the method specified by `identifier`.

getReflectiveMethods	back to summary
public final Method[] getReflectiveMethods() Returns an array of the methods defined on the given reflective object. This method is for the internal use only.

getReturnType	back to summary
public final Class<?> getReturnType(int identifier) Returns a `Class` objects representing the return type of the method specified by `identifier`.

invoke back to summary

invoke	back to summary
public static Object invoke(Object target, int identifier, Object[] args) throws Throwable Invokes a method whose name begins with `methodPrefix "_m_"` and the identifier. Exceptions CannotInvokeException: if the invocation fails.

public static Object invoke(Object target, int identifier, Object[] args) throws Throwable

Invokes a method whose name begins with methodPrefix "_m_" and the identifier.

Exceptions

CannotInvokeException:: if the invocation fails.

isInstance	back to summary
public final boolean isInstance(Object obj) Returns true if `obj` is an instance of this class.

newInstance	back to summary
public final Object newInstance(Object[] args) throws CannotCreateException Creates a new instance of the class. Parameters args:Object[] the arguments passed to the constructor.

newInstance

back to summary

public final Object newInstance(Object[] args) throws CannotCreateException

Creates a new instance of the class.

Parameters

args:Object[]: the arguments passed to the constructor.

readObject	back to summary
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException

trapFieldRead back to summary

trapFieldRead	back to summary
public Object trapFieldRead(String name) Is invoked when `static` fields of the base-level class are read and the runtime system intercepts it. This method simply returns the value of the field. Every subclass of this class should redefine this method.

public Object trapFieldRead(String name)

Is invoked when static fields of the base-level class are read and the runtime system intercepts it. This method simply returns the value of the field.

Every subclass of this class should redefine this method.

trapFieldWrite back to summary

trapFieldWrite	back to summary
public void trapFieldWrite(String name, Object value) Is invoked when `static` fields of the base-level class are modified and the runtime system intercepts it. This method simply sets the field to the given value. Every subclass of this class should redefine this method.

public void trapFieldWrite(String name, Object value)

Is invoked when static fields of the base-level class are modified and the runtime system intercepts it. This method simply sets the field to the given value.

Every subclass of this class should redefine this method.

trapMethodcall back to summary

trapMethodcall	back to summary
public Object trapMethodcall(int identifier, Object[] args) throws Throwable Is invoked when `static` methods of the base-level class are called and the runtime system intercepts it. This method simply executes the intercepted method invocation with the original parameters and returns the resulting value. Every subclass of this class should redefine this method.

public Object trapMethodcall(int identifier, Object[] args) throws Throwable

Is invoked when static methods of the base-level class are called and the runtime system intercepts it. This method simply executes the intercepted method invocation with the original parameters and returns the resulting value.

Every subclass of this class should redefine this method.

writeObject	back to summary
private void writeObject(ObjectOutputStream out) throws IOException

public Class ClassMetaobject

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail