org.apache.xml.utils.synthetic.reflection
Class Method

java.lang.Object
  org.apache.xml.utils.synthetic.reflection.EntryPoint
      org.apache.xml.utils.synthetic.reflection.Method

All Implemented Interfaces:

Member

public class Method

extends EntryPoint

implements Member

A Method provides information about, and access to, a single method on a class or interface. The reflected method may be a class method or an instance method (including an abstract method).

A Method permits widening conversions to occur when matching the actual parameters to invokewith the underlying method's formal parameters, but it throws an IllegalArgumentException if a narrowing conversion would occur.

Need to add method body, a la Matt's codebuffer. That may or may not imply retaining the final return value separately and passing in a how-to-use-it mechanism...?

Field Summary

Fields inherited from class org.apache.xml.utils.synthetic.reflection.EntryPoint

name, realE, realep, realP, returntype

Constructor Summary

Method(Method realmethod)
Insert the method's description here.

Method(Method ctor, Class declaringclass)
Insert the method's description here.

Method(String name, Class declaringclass)
Insert the method's description here.

Method Summary

int	hashCode() Returns a hashcode for this Constructor.
Object	invoke(Object obj, Object[] args) Invokes the underlying method represented by this Method object, on the specified object with the specified parameters.
void	setReturnType(Class returntype) Method setReturnType

Methods inherited from class org.apache.xml.utils.synthetic.reflection.EntryPoint

addExceptionType, addParameter, equals, getBody, getDeclaringClass, getExceptionTypes, getLanguage, getModifiers, getName, getParameterNames, getParameterTypes, getReturnType, setBody, setDeclaringClass, setModifiers, setName, toSource, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.xml.utils.synthetic.reflection.Member

getDeclaringClass, getModifiers, setDeclaringClass, setModifiers

Constructor Detail

Method

public Method(String name,
              Class declaringclass)

Insert the method's description here.

Creation date: (12-27-99 2:31:39 PM)

Parameters:

name -

declaringclass -

Method

public Method(Method ctor,
              Class declaringclass)

Insert the method's description here.

Creation date: (12-27-99 2:31:39 PM)

Parameters:

ctor -

declaringclass -

Method

public Method(Method realmethod)

Insert the method's description here.

Creation date: (12-27-99 2:31:39 PM)

Parameters:

realmethod -

Method Detail

hashCode

public int hashCode()

Returns a hashcode for this Constructor. The hashcode for a Method is the hashcode for the underlying constructor's declaring class name, XORed with the name of this method.

Specified by:

hashCode in class EntryPoint

invoke

public Object invoke(Object obj,
                     Object[] args)
              throws IllegalAccessException,
                     IllegalArgumentException,
                     InvocationTargetException

Invokes the underlying method represented by this Method object, on the specified object with the specified parameters. Individual parameters are automatically unwrapped to match primitive formal parameters, and both primitive and reference parameters are subject to widening conversions as necessary. The value returned by the underlying method is automatically wrapped in an object if it has a primitive type. Method invocation proceeds with the following steps, in order: If the underlying method is static, then the specified object argument is ignored. It may be null. Otherwise, the method is an instance method. If the specified object argument is null, the invocation throws a NullPointerException. Otherwise, if the specified object argument is not an instance of the class or interface declaring the underlying method, the invocation throws an IllegalArgumentException. If this Method object enforces Java language access control and the underlying method is inaccessible, the invocation throws an IllegalAccessException. If the number of actual parameters supplied via args is different from the number of formal parameters required by the underlying method, the invocation throws an IllegalArgumentException. For each actual parameter in the supplied args array: If the corresponding formal parameter has a primitive type, an unwrapping conversion is attempted to convert the object value to a value of a primitive type. If this attempt fails, the invocation throws an IllegalArgumentException. If, after possible unwrapping, the parameter value cannot be converted to the corresponding formal parameter type by an identity or widening conversion, the invocation throws an IllegalArgumentException. If the underlying method is an instance method, it is invoked using dynamic method lookup as documented in The Java Language Specification, section 15.11.4.4; in particular, overriding based on the runtime type of the target object will occur. If the underlying method is static, it is invoked as exactly the method on the declaring class. Control transfers to the underlying method. If the method completes abruptly by throwing an exception, the exception is placed in an InvocationTargetException and thrown in turn to the caller of invoke. If the method completes normally, the value it returns is returned to the caller of invoke; if the value has a primitive type, it is first appropriately wrapped in an object. If the underlying method return type is void, the invocation returns null. Throws: IllegalAccessException if the underlying method is inaccessible. Throws: IllegalArgumentException if the number of actual and formal parameters differ, or if an unwrapping conversion fails. Throws: InvocationTargetException if the underlying method throws an exception. Throws: NullPointerException if the specified object is null.

Parameters:

obj -

args -

Throws:

IllegalAccessException

IllegalArgumentException

InvocationTargetException

setReturnType

public void setReturnType(Class returntype)
                   throws SynthesisException

Method setReturnType

Parameters:

returntype -

Throws:

SynthesisException