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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,66 +1,74 @@ | ||
| import { Node } from '../snap/Node'; | ||
| import { Path } from '../util/Path'; | ||
|
|
||
| /** | ||
| * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully | ||
| * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g. | ||
| * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks | ||
| * whether a node potentially had children removed due to a filter. | ||
| * | ||
| * @param {!fb.core.snap.Node} node | ||
| * @param {boolean} fullyInitialized | ||
| * @param {boolean} filtered | ||
| * @constructor | ||
| */ | ||
| export class CacheNode { | ||
| export const CacheNode = function(node, fullyInitialized, filtered) { | ||
| /** | ||
| * @param {!fb.core.snap.Node} node_ | ||
| * @param {boolean} fullyInitialized_ | ||
| * @param {boolean} filtered_ | ||
| * @type {!fb.core.snap.Node} | ||
| * @private | ||
| */ | ||
| constructor(private node_: Node, | ||
| private fullyInitialized_: boolean, | ||
| private filtered_: boolean) { | ||
|
|
||
| } | ||
| this.node_ = node; | ||
|
|
||
| /** | ||
| * Returns whether this node was fully initialized with either server data or a complete overwrite by the client | ||
| * @return {boolean} | ||
| * @type {boolean} | ||
| * @private | ||
| */ | ||
| isFullyInitialized(): boolean { | ||
| return this.fullyInitialized_; | ||
| } | ||
| this.fullyInitialized_ = fullyInitialized; | ||
|
|
||
| /** | ||
| * Returns whether this node is potentially missing children due to a filter applied to the node | ||
| * @return {boolean} | ||
| * @type {boolean} | ||
| * @private | ||
| */ | ||
| isFiltered(): boolean { | ||
| return this.filtered_; | ||
| } | ||
| this.filtered_ = filtered; | ||
| }; | ||
|
|
||
| /** | ||
| * @param {!fb.core.util.Path} path | ||
| * @return {boolean} | ||
| */ | ||
| isCompleteForPath(path: Path): boolean { | ||
| if (path.isEmpty()) { | ||
| return this.isFullyInitialized() && !this.filtered_; | ||
| } | ||
| /** | ||
| * Returns whether this node was fully initialized with either server data or a complete overwrite by the client | ||
| * @return {boolean} | ||
| */ | ||
| CacheNode.prototype.isFullyInitialized = function() { | ||
| return this.fullyInitialized_; | ||
| }; | ||
|
|
||
| const childKey = path.getFront(); | ||
| return this.isCompleteForChild(childKey); | ||
| } | ||
| /** | ||
| * Returns whether this node is potentially missing children due to a filter applied to the node | ||
| * @return {boolean} | ||
| */ | ||
| CacheNode.prototype.isFiltered = function() { | ||
| return this.filtered_; | ||
| }; | ||
|
|
||
| /** | ||
| * @param {!string} key | ||
| * @return {boolean} | ||
| */ | ||
| isCompleteForChild(key: string): boolean { | ||
| return (this.isFullyInitialized() && !this.filtered_) || this.node_.hasChild(key); | ||
| /** | ||
| * @param {!fb.core.util.Path} path | ||
| * @return {boolean} | ||
| */ | ||
| CacheNode.prototype.isCompleteForPath = function(path) { | ||
| if (path.isEmpty()) { | ||
| return this.isFullyInitialized() && !this.filtered_; | ||
| } else { | ||
| var childKey = path.getFront(); | ||
| return this.isCompleteForChild(childKey); | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * @return {!fb.core.snap.Node} | ||
| */ | ||
| getNode(): Node { | ||
| return this.node_; | ||
| } | ||
| /** | ||
| * @param {!string} key | ||
| * @return {boolean} | ||
| */ | ||
| CacheNode.prototype.isCompleteForChild = function(key) { | ||
| return (this.isFullyInitialized() && !this.filtered_) || this.node_.hasChild(key); | ||
| }; | ||
|
|
||
| } | ||
| /** | ||
| * @return {!fb.core.snap.Node} | ||
| */ | ||
| CacheNode.prototype.getNode = function() { | ||
| return this.node_; | ||
| }; |
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