TransformerUtils (GTF 2.0.1 API)

java.lang.Object
- science.aist.gtf.transformation.TransformerUtils

```
public class TransformerUtils
extends Object
```
Well this class is necessary, because Java generics is the greatest nonsense which was ever developed ...

This class encapsulates all cast magic and then suppresses the unchecked cast message.

Since:

1.0

Author:

Andreas Pointner

Constructor Summary

Constructors
Constructor Description

TransformerUtils()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<T,S> Class<T>`	`getTypeArgument(Class<S> clazz, int idx)`	This method extracts the generic types from instantiated classes, which directly overwrite the generic parameters of its parent class.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TransformerUtils
```
public TransformerUtils()
```
- Method Detail
  - getTypeArgument
```
public <T,S> Class<T> getTypeArgument(Class<S> clazz,
                                            int idx)
```
    This method extracts the generic types from instantiated classes, which directly overwrite the generic parameters of its parent class. e.g. if there is a class ArrayList<T> and the class is then extended by e.g. MyArrayList extends ArrayList<String> then this method can extract the generic argument of this class, which would be in that specific case be string, and the method class would result in something like:
    getTypeArgument(MyArrayList.class, 0) = Class<String>
    Type Parameters:
    
    T - the type of the result class
    
    S - the type of tine input class
    
    Parameters:
    
    clazz - the class where the generic type should be extracted
    
    idx - the index of the generic type
    
    Returns:
    
    a class which represents the type argument of clazz at idx position. There is also a special case, if the GenericType is a ParameterizedType of the type Graph, then the generic argument from the graph is returned.
    
    Throws:
    
    RuntimeException - if the type argument cannot be extracted from the class