Canonicalizer (Apache Parquet Common 1.12.2 API)

java.lang.Object
- org.apache.parquet.hadoop.metadata.Canonicalizer<T>

Type Parameters:

T - the type of values canonicalized by subclasses
```
public class Canonicalizer<T>
extends Object
```
returns canonical representation of objects (similar to String.intern()) to save memory if a.equals(b) then canonicalize(a) == canonicalize(b) this class is thread safe

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Canonicalizer()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  T canonicalize(T value)
  
  protected T toCanonical(T value)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Canonicalizer
```
public Canonicalizer()
```
- Method Detail
  - canonicalize
```
public final T canonicalize(T value)
```
    Parameters:
    
    value - the value to canonicalize
    
    Returns:
    
    the corresponding canonical value
  - toCanonical
```
protected T toCanonical(T value)
```
    Parameters:
    
    value - the value to canonicalize if needed
    
    Returns:
    
    the canonicalized value