DBSTransactionState.ConditionalUpdates (Nuxeo 2021.64.6 API Documentation)

java.lang.Object
- org.nuxeo.ecm.core.storage.dbs.DBSTransactionState.ConditionalUpdates

Enclosing class:

DBSTransactionState
```
public static class DBSTransactionState.ConditionalUpdates
extends Object
```
Logic to get the conditions to use to match and update a change token.
This may be called several times for a single DBS document update, because the low-level storage may need several database updates for a single high-level update in some cases.

Since:

9.1

Field Summary

Fields
Modifier and Type Field Description

protected List<Runnable> callbacks

protected Map<String,Serializable> conditions

protected Map<String,Serializable> updates

Constructor Summary

Constructors
Constructor Description

ConditionalUpdates()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addCallback(Runnable callback)`	Adds a callback.
`void`	`finish()`	To be called by the processor after each update.
`Map<String,Serializable>`	`getConditions()`	Gets the conditions to use to match a change token.
`Map<String,Serializable>`	`getUpdates()`	Gets the updates to make to write the updated change token.
`void`	`put(Map<String,Serializable> condition, Map<String,Serializable> update)`	Puts condition and update.

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

- Field Detail
  - conditions
```
protected final Map<String,Serializable> conditions
```
  - updates
```
protected final Map<String,Serializable> updates
```
  - callbacks
```
protected final List<Runnable> callbacks
```
- Constructor Detail
  - ConditionalUpdates
```
public ConditionalUpdates()
```
- Method Detail
  - put
```
public void put(Map<String,Serializable> condition,
                Map<String,Serializable> update)
```
    Puts condition and update.
  - addCallback
```
public void addCallback(Runnable callback)
```
    Adds a callback.
    The callback is useful to 1. finish updating internal in-memory document state after an update is done, and 2. prepare a new condition/update if the conditional update is used again.
  - getConditions
```
public Map<String,Serializable> getConditions()
```
    Gets the conditions to use to match a change token.
  - getUpdates
```
public Map<String,Serializable> getUpdates()
```
    Gets the updates to make to write the updated change token.
  - finish
```
public void finish()
```
    To be called by the processor after each update.