GraphHolder (omero-model 5.7.0 API)

java.lang.Object
- ome.model.internal.GraphHolder

```
public final class GraphHolder
extends java.lang.Object
```
holds information regarding the graph to which an IObject belongs. hasToken(), tokenMatches(Token), and setToken(Token, Token) are final so that subclasses cannot intercept tokens.

Since:

3.0

Constructor Summary

Constructors
Constructor Description

GraphHolder()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IObject`	`getReplacement()`	a replacement is a managed entity instance which has the same primary key as this instance.
`boolean`	`hasToken()`	tests if this `GraphHolder` contains a `Token` reference.
`void`	`setReplacement(IObject replacement)`	used mostly by `ome.api.IUpdate`.
`void`	`setToken(Token previousToken, Token newToken)`	set the `Token` for this `GraphHolder` but only if you posses the current `Token`.
`boolean`	`tokenMatches(Token token)`	check the `Token` for the `IObject` represented by this `GraphHolder`.

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

- Constructor Detail
  - GraphHolder
```
public GraphHolder()
```
- Method Detail
  - getReplacement
```
public IObject getReplacement()
```
    a replacement is a managed entity instance which has the same primary key as this instance. Storing this value here allows for several optimizations.
    
    Returns:
    
    entity
  - setReplacement
```
public void setReplacement(IObject replacement)
```
    used mostly by ome.api.IUpdate. Improper use of this method may cause erratic behavior.
    
    Parameters:
    
    replacement -
  - hasToken
```
public final boolean hasToken()
```
    tests if this GraphHolder contains a Token reference.
  - tokenMatches
```
public final boolean tokenMatches(Token token)
```
    check the Token for the IObject represented by this GraphHolder. This can be seen to approximate "ownership" of this Object within the JVM.
    
    Returns:
    
    true only if the two instances are identical.
  - setToken
```
public final void setToken(Token previousToken,
                           Token newToken)
```
    set the Token for this GraphHolder but only if you posses the current Token. The first call to setToken(Token, Token) will succeed when token is null.
    
    Parameters:
    
    previousToken -
    
    newToken -