ISequenceDeltaRange Interface

A range that has changed corresponding to a segment modification.

This API is provided for existing users, but is not recommended for new users.

To use, import via fluid-framework/legacy.

For more information about our API support guarantees, see here.

Signature

export interface ISequenceDeltaRange<TOperation extends MergeTreeDeltaOperationTypes = MergeTreeDeltaOperationTypes>

Type Parameters

Parameter	Constraint	Default	Description
TOperation	MergeTreeDeltaOperationTypes	MergeTreeDeltaOperationTypes

Properties

Property	Alerts	Type	Description
operation	Beta	TOperation	The type of operation that changed this range.
position	Beta	number	The index of the start of the range.
propertyDeltas	Beta	PropertySet	Deltas object which contains all modified properties with their previous values. Since undefined doesn't survive a round-trip through JSON serialization, the old value being absent is instead encoded with null.
segment	Beta	ISegment	The segment that corresponds to the range.

Property Details

operation

The type of operation that changed this range.

This API is provided for existing users, but is not recommended for new users.

For more information about our API support guarantees, see here.

Signature

operation: TOperation;

Type: TOperation

Remarks

Consuming code should typically compare this to the enum values defined in MergeTreeDeltaOperationTypes.

position

The index of the start of the range.

This API is provided for existing users, but is not recommended for new users.

For more information about our API support guarantees, see here.

Signature

position: number;

Type: number

propertyDeltas

Deltas object which contains all modified properties with their previous values. Since undefined doesn't survive a round-trip through JSON serialization, the old value being absent is instead encoded with null.

This API is provided for existing users, but is not recommended for new users.

For more information about our API support guarantees, see here.

Signature

propertyDeltas: PropertySet;

Type: PropertySet

Remarks

This object is motivated by undo/redo scenarios, and provides a convenient "inverse op" to apply to undo a property change.

Example

If a segment initially had properties { foo: "1", bar: 2 } and it was annotated with { foo: 3, baz: 5 }, the corresponding event would have a propertyDeltas of { foo: "1", baz: null }.

segment

The segment that corresponds to the range.

This API is provided for existing users, but is not recommended for new users.

For more information about our API support guarantees, see here.

Signature

segment: ISegment;

Type: ISegment