Package | mx.data |
Class | public class ConflictDetector |
Inheritance | ConflictDetector ![]() |
Language Version: | ActionScript 3.0 |
Product Version: | Adobe Digital Enterprise Platform Data Services for Java EE 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
It has three methods that are used to determine if a conflict exists when
processing a pushed operation, checkCreate()
, checkDelete()
, and
checkUpdate()
.
Each of these methods is called for the corresponding operation with two
parameters, the local and the remote change.
If you want to customize how conflicts are detected on the client, you can extend this class and augment the behavior as needed to match remote assembler logic.
The following code provides examples of how these methods can be used to indicate a conflict has occurred. Conflicts are always indicated on the remoteChange.
Public Properties
Public Methods
Method | Defined By | ||
---|---|---|---|
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Indicates whether an object has a specified property defined. | Object | |
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Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
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Indicates whether the specified property exists and is enumerable. | Object | |
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Sets the availability of a dynamic property for loop operations. | Object | |
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Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
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Returns the string representation of the specified object. | Object | |
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Returns the primitive value of the specified object. | Object |
Constructor Detail
Method Detail
Examples How to use this example
override public function checkCreate(remoteChange:IChangeObject, localChange:IChangeObject):void { // if we have created a local item that is the same item as the remote // change then we have a conflict if (localChange != null && ObjectUtil.compare(remoteChange.identity, localChange.identity) == 0) { remoteChange.conflict("Local created item is in conflict with remotely created item", localChange.changedPropertyNames); } } override public function checkDelete(remoteChange:IChangeObject, localChange:IChangeObject):void { // if we have an update locally for an item that was deleted remotely // that is considered a conflict. if (localChange != null) { if (localChange.isUpdate()) { remoteChange.conflict("Local item was updated and is in conflict with pushed delete.", localChange.changedPropertyNames); } } } override public function checkUpdate(remoteChange:IChangeObject, localChange:IChangeObject):void { // get a list of all of the changed properties var changes:Array = remoteChange.changedPropertyNames; // get the remote state of the item's properties var newVersion:Object = remoteChange.newVersion; var prevVersion:Object = localChange.previousVersion; // properties will be in conflict if the old value of a property on the // local item is different from the same property value of the new version // of the remote item. var conflictingProps:Array = []; for (var i:int=0; i<changes.length; i++) { var prop:Object = changes[i]; // could be a String or QName if (ObjectUtil.compare(prevVersion[prop], newVersion[prop]) != 0) { conflictingProps.push(prop); } } if (conflictingProps.length > 0) { remoteChange.conflict("Local item has changes to properties that conflict with remote change.", conflictingProps); } }
Thu Dec 6 2018, 01:12 PM -08:00