FormDesignerSyncPersistBean (FORMCYCLE: BOM 7.0.2 API)

java.lang.Object
- de.xima.fc.gui.designer.form.bean.FormDesignerSyncPersistBean

All Implemented Interfaces:

Serializable
```
@ViewScoped
@Named
public class FormDesignerSyncPersistBean
extends Object
implements Serializable
```
Controller bean for the form designer handling changes to the form persist JSON.

Since:

7.0.0

Author:

XIMA MEDIA GmbH

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

FormDesignerSyncPersistBean()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`syncPersist()`	Remote command that accepts a list of patches to the persist JSON.
`void`	`syncPersistPatches()`	Remote command that accepts a list of patches to the persist JSON.

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

- Constructor Detail
  - FormDesignerSyncPersistBean
```
public FormDesignerSyncPersistBean()
```
- Method Detail
  - syncPersistPatches
```
public void syncPersistPatches()
```
    Remote command that accepts a list of patches to the persist JSON. Takes the JSON patches for the form persist JSON, applies the patches to the JSON, records the modifications, i.e. which form items were changed, and posts an event to the designer conversation event bus.
    Used to sync the client state to the server. We keep a copy of the form persist JSON on the server so all beans can access it. To prevent us from having to send the entire persist JSON on every change, we compute a diff between the last and the current state on the client in the form of JSON patches, and only send those patches to the server. When this fails (such as because patches were sent in the wrong order etc.), we return an error to the client: This in turns causes the client to send a full copy of the persist JSON to the server, see syncPersist().
  - syncPersist
```
public void syncPersist()
```
    Remote command that accepts a list of patches to the persist JSON. See notes in syncPersistPatches(). This is used (a) as a fallback when the patches could not be applied and (b) when the entire form is replaced and the patches would be as large or larger than the persist JSON itself, such as when the user loads a backup persist JSON.