ClassLookupCache (Emissary 8.26.0 API)

java.lang.Object
- emissary.util.ClassLookupCache

```
public final class ClassLookupCache
extends Object
```
This implements a simple caching mechanism for Class.forName(String). For example if the same class name is looked up repeatedly, using this cache may be able to avoid a lot of JVM reflection overhead.
To use this, just call lookup(String) where you would normally use Class.forName(String). There are also methods for directly manipulating the cache but most uses can avoid those.
Note that the cache implementation may have a small capacity and/or be thread-specific, so storing something in the cache does not guarantee that it will be indefinitely cached or that the cached value will be visible to other threads.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Class<?>`	`get(String className)`	Look up a class in the cache.
`static Class<?>`	`lookup(String className)`	Look up a class by name.
`static void`	`put(String className, Class<?> clazz)`	Store a class lookup in the cache.
`static void`	`unload()`	Destroy the ThreadLocal cache object

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

- Method Detail
  - get
```
@Nullable
public static Class<?> get(String className)
```
    Look up a class in the cache.
    
    Parameters:
    
    className - The class name to find.
    
    Returns:
    
    If the class name is currently known to the cache, the corresponding Class object is returned. Otherwise null.
  - put
```
public static void put(String className,
                       Class<?> clazz)
```
    Store a class lookup in the cache.
    
    Parameters:
    
    className - The class name.
    
    clazz - The class. Assumed to match className.
  - lookup
```
public static Class<?> lookup(String className)
                       throws ClassNotFoundException
```
    Look up a class by name. This is basically a utility method that can be called instead of Class.forName(String), and will try to use the cache to speed up the lookups.
    
    Parameters:
    
    className - The class name to get.
    
    Returns:
    
    The Class object corresponding to className.
    
    Throws:
    
    ClassNotFoundException - If the class name could not be resolved.
  - unload
```
public static void unload()
```
    Destroy the ThreadLocal cache object