FunctionMetadataSource (Teiid 15.0.0 API)

All Known Implementing Classes:

SystemSource, UDFSource
```
public interface FunctionMetadataSource
```
A FunctionMetadataSource represents a source of function metadata for the function library. A FunctionMetadataSource needs to know how to return a collection of all the function signatures it knows about.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ClassLoader`	`getClassLoader()`	Classloader used for functions
`Collection<FunctionMethod>`	`getFunctionMethods()`	This method requests that the source return all `FunctionMethod`s the source knows about.
`Class<?>`	`getInvocationClass(String className)`	This method determines where the invocation classes specified in the function metadata are actually retrieved from.

- Method Detail
  - getFunctionMethods
```
Collection<FunctionMethod> getFunctionMethods()
```
    This method requests that the source return all FunctionMethods the source knows about. This can occur in several situations - on initial registration with the FunctionLibraryManager, on a general reload, etc. This may be called multiple times and should always return the newest information available.
    
    Returns:
    
    Collection of FunctionMethod objects
  - getInvocationClass
```
Class<?> getInvocationClass(String className)
                     throws ClassNotFoundException
```
    This method determines where the invocation classes specified in the function metadata are actually retrieved from.
    
    Parameters:
    
    className - Name of class
    
    Returns:
    
    Class reference
    
    Throws:
    
    ClassNotFoundException - If class could not be found
  - getClassLoader
```
ClassLoader getClassLoader()
```
    Classloader used for functions
    
    Returns: