AnnotationLookup (Stanford JavaNLP API)

java.lang.Object
- edu.stanford.nlp.ling.AnnotationLookup

```
public class AnnotationLookup
extends Object
```
Provides a mapping between CoreAnnotation keys, which are classes, and a text String that names them, which is needed for things like text serializations and the Semgrex query language.

Author:

Anna Rafferty

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Class<?>`	`getValueType(Class<? extends CoreAnnotation<?>> key)`	Returns the runtime value type associated with the given key.
`static Class<? extends CoreAnnotation<?>>`	`toCoreKey(String stringKey)`	Returns a CoreAnnotation class key for the given string key if one exists; null otherwise.

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

- Method Detail
  - toCoreKey
```
public static Class<? extends CoreAnnotation<?>> toCoreKey(String stringKey)
```
    Returns a CoreAnnotation class key for the given string key if one exists; null otherwise.
    
    Parameters:
    
    stringKey - String form of the key
    
    Returns:
    
    A CoreLabel/CoreAnnotation key, or null if nothing matches
  - getValueType
```
public static Class<?> getValueType(Class<? extends CoreAnnotation<?>> key)
```
    Returns the runtime value type associated with the given key. Caches results in a private Map.
    
    Parameters:
    
    key - The annotation key (non-null)
    
    Returns:
    
    The type of the value of that key (non-null)