org.apache.xbean.recipe
Class AsmParameterNameLoader

java.lang.Object
  org.apache.xbean.recipe.AsmParameterNameLoader

All Implemented Interfaces:

ParameterNameLoader

public class AsmParameterNameLoader
extends Object
implements ParameterNameLoader

Implementation of ParameterNameLoader that uses ASM to read the parameter names from the local variable table in the class byte code. This wonderful piece of code was taken from org.springframework.core.LocalVariableTableParameterNameDiscover

Constructor Summary

AsmParameterNameLoader()

Method Summary

List<String>	get(Constructor constructor) Gets the parameter names of the specified constructor or null if the class was compiled without debug symbols on.
List<String>	get(Method method) Gets the parameter names of the specified method or null if the class was compiled without debug symbols on.
Map<Constructor,List<String>>	getAllConstructorParameters(Class clazz) Gets the parameter names of all constructor or null if the class was compiled without debug symbols on.
Map<Method,List<String>>	getAllMethodParameters(Class clazz, String methodName) Gets the parameter names of all methods with the specified name or null if the class was compiled without debug symbols on.

Methods inherited from class java.lang.Object

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

Constructor Detail

AsmParameterNameLoader

public AsmParameterNameLoader()

Method Detail

get

public List<String> get(Method method)

Gets the parameter names of the specified method or null if the class was compiled without debug symbols on.

Specified by:

get in interface ParameterNameLoader

Parameters:

method - the method for which the parameter names should be retrieved

Returns:

the parameter names or null if the class was compilesd without debug symbols on

get

public List<String> get(Constructor constructor)

Gets the parameter names of the specified constructor or null if the class was compiled without debug symbols on.

Specified by:

get in interface ParameterNameLoader

Parameters:

constructor - the constructor for which the parameters should be retrieved

Returns:

the parameter names or null if the class was compiled without debug symbols on

getAllConstructorParameters

public Map<Constructor,List<String>> getAllConstructorParameters(Class clazz)

Gets the parameter names of all constructor or null if the class was compiled without debug symbols on.

Parameters:

clazz - the class for which the constructor parameter names should be retrieved

Returns:

a map from Constructor object to the parameter names or null if the class was compiled without debug symbols on

getAllMethodParameters

public Map<Method,List<String>> getAllMethodParameters(Class clazz,
                                                       String methodName)

Gets the parameter names of all methods with the specified name or null if the class was compiled without debug symbols on.

Parameters:

clazz - the class for which the method parameter names should be retrieved

methodName - the of the method for which the parameters should be retrieved

Returns:

a map from Method object to the parameter names or null if the class was compiled without debug symbols on