IdTransformer (GraphAware Common 4.2.0.58 API)

Type Parameters:

ID - custom ID type.

E - entity type.

All Known Subinterfaces:

NodeIdTransformer<ID>, RelationshipIdTransformer<ID>

All Known Implementing Classes:

BaseIdTransformer, BaseTrivialIdTransformer, TrivialNodeIdTransformer, TrivialRelationshipIdTransformer
```
public interface IdTransformer<ID,E extends Entity>
```
A transformer of custom IDs to and from internal Neo4j Entity IDs.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ID`	`fromEntity(E entity)`	Transform an internal Neo4j node ID of a `Entity` to a custom ID.
`long`	`toGraphId(ID id)`	Transform a custom ID to internal Neo4j ID.

- Method Detail
  - toGraphId
```
long toGraphId(ID id)
```
    Transform a custom ID to internal Neo4j ID.
    
    Parameters:
    
    id - to transform. Can be null, which represents a new entity not yet persisted to the database.
    
    Returns:
    
    internal Neo4j ID. DetachedEntity.NEW should be returned in case the id parameter is null.
  - fromEntity
```
ID fromEntity(E entity)
```
    Transform an internal Neo4j node ID of a Entity to a custom ID.
    
    Parameters:
    
    entity - to take the ID to transform from. Must not be null.
    
    Returns:
    
    transformed custom ID. Never null.