DuplicateHandler

```
public interface DuplicateHandler<T>
```
DuplicateHandler

Version:

$Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/util/DuplicateHandler.java#2 $

Field Summary

Fields
Modifier and Type	Field	Description
`static DuplicateHandler<?>`	`DUPLICATES_AS_ARRAY`	Converts duplicats to an `Object` array.
`static DuplicateHandler<java.lang.String>`	`DUPLICATES_AS_CSV`	Converts duplicates to a comma-separated `String`.
`static DuplicateHandler<?>`	`USE_FIRST_VALUE`	Will use the first (old) value.
`static DuplicateHandler<?>`	`USE_LAST_VALUE`	Will use the last (new) value.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

T resolve(T pOld, T pNew)
Resolves duplicates according to a certain strategy.

- Field Detail
  - USE_FIRST_VALUE
```
static final DuplicateHandler<?> USE_FIRST_VALUE
```
    Will use the first (old) value. Any new values will be discarded.
    
    See Also:
    
    CollectionUtil.invert(java.util.Map, java.util.Map, DuplicateHandler)
  - USE_LAST_VALUE
```
static final DuplicateHandler<?> USE_LAST_VALUE
```
    Will use the last (new) value. Any old values will be discarded (overwritten).
    
    See Also:
    
    CollectionUtil.invert(java.util.Map, java.util.Map, DuplicateHandler)
  - DUPLICATES_AS_ARRAY
```
static final DuplicateHandler<?> DUPLICATES_AS_ARRAY
```
    Converts duplicats to an Object array.
    
    See Also:
    
    CollectionUtil.invert(java.util.Map, java.util.Map, DuplicateHandler)
  - DUPLICATES_AS_CSV
```
static final DuplicateHandler<java.lang.String> DUPLICATES_AS_CSV
```
    Converts duplicates to a comma-separated String. Note that all values should allready be Strings if using this handler.
    
    See Also:
    
    CollectionUtil.invert(java.util.Map, java.util.Map, DuplicateHandler)
- Method Detail
  - resolve
```
T resolve(T pOld,
          T pNew)
```
    Resolves duplicates according to a certain strategy.
    
    Parameters:
    
    pOld - the old value
    
    pNew - the new value
    
    Returns:
    
    the resolved value.
    
    Throws:
    
    java.lang.IllegalArgumentException - is the arguments cannot be resolved for some reason.