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[Search] Move reindex function

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Move function used to listen for mutation changes (to trigger
reindexing) up in scope, to avoid retaining references to
domain objects via closure. nasa/openmctweb#141

Also, includes misc. whitespace normalization (provided by
code editor.)
This commit is contained in:
Victor Woeltjen 2015-09-29 10:54:14 -07:00
parent d6fe543c16
commit ad7d3d642e
1 changed files with 45 additions and 43 deletions
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88
platform/search/src/services/GenericSearchProvider.js
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@ -28,13 +28,13 @@ define(
[],
function () {
"use strict";
var DEFAULT_MAX_RESULTS = 100,
DEFAULT_TIMEOUT = 1000,
stopTime;
/**
* A search service which searches through domain objects in
* A search service which searches through domain objects in
* the filetree without using external search implementations.
*
* @constructor
@ -44,7 +44,7 @@ define(
* domain objects can be gotten.
* @param {WorkerService} workerService The service which allows
* more easy creation of web workers.
* @param {GENERIC_SEARCH_ROOTS} ROOTS An array of the root
* @param {GENERIC_SEARCH_ROOTS} ROOTS An array of the root
* domain objects' IDs.
*/
function GenericSearchProvider($q, $timeout, objectService, workerService, ROOTS) {
@ -57,11 +57,11 @@ define(
this.$q = $q;
// pendingQueries is a dictionary with the key value pairs st
// the key is the timestamp and the value is the promise
// Tell the web worker to add a domain object's model to its list of items.
function indexItem(domainObject) {
var message;
// undefined check
if (domainObject && domainObject.getModel) {
// Using model instead of whole domain object because
@ -74,15 +74,15 @@ define(
worker.postMessage(message);
}
}
// Handles responses from the web worker. Namely, the results of
// a search request.
// Handles responses from the web worker. Namely, the results of
// a search request.
function handleResponse(event) {
var ids = [],
id;
// If we have the results from a search
// If we have the results from a search
if (event.data.request === 'search') {
// Convert the ids given from the web worker into domain objects
for (id in event.data.results) {
@ -91,7 +91,7 @@ define(
objectService.getObjects(ids).then(function (objects) {
var searchResults = [],
id;
// Create searchResult objects
for (id in objects) {
searchResults.push({
@ -100,8 +100,8 @@ define(
score: event.data.results[id]
});
}
// Resove the promise corresponding to this
// Resove the promise corresponding to this
pendingQueries[event.data.timestamp].resolve({
hits: searchResults,
total: event.data.total,
@ -110,27 +110,44 @@ define(
});
}
}
// Helper function for getItems(). Indexes the tree.
function indexItems(nodes) {
function handleMutation(model) {
if (model && model.composition) {
// If the node was mutated to have children, get the child domain objects
objectService.getObjects(listener.composition).then(function (objectsById) {
var objects = [],
id;
// Get each of the domain objects in objectsById
for (id in objectsById) {
objects.push(objectsById[id]);
}
indexItems(objects);
});
}
}
nodes.forEach(function (node) {
var id = node && node.getId && node.getId();
// If we have already indexed this item, stop here
if (indexed[id]) {
return;
}
// Index each item with the web worker
indexItem(node);
indexed[id] = true;
// If this node has children, index those
if (node && node.hasCapability && node.hasCapability('composition')) {
// Make sure that this is async, so doesn't block up page
$timeout(function () {
// Get the children...
// Get the children...
node.useCapability('composition').then(function (children) {
$timeout(function () {
// ... then index the children
@ -143,41 +160,26 @@ define(
});
}, 0);
}
// Watch for changes to this item, in case it gets new children
if (node && node.hasCapability && node.hasCapability('mutation')) {
node.getCapability('mutation').listen(function (listener) {
if (listener && listener.composition) {
// If the node was mutated to have children, get the child domain objects
objectService.getObjects(listener.composition).then(function (objectsById) {
var objects = [],
id;
// Get each of the domain objects in objectsById
for (id in objectsById) {
objects.push(objectsById[id]);
}
indexItems(objects);
});
}
});
// Watch for changes to this item, in case it gets new children
if (node && node.hasCapability && node.hasCapability('mutation')) {
node.getCapability('mutation').listen(handleMutation);
}
});
}
// Converts the filetree into a list
function getItems() {
// Aquire root objects
objectService.getObjects(ROOTS).then(function (objectsById) {
var objects = [],
id;
// Get each of the domain objects in objectsById
for (id in objectsById) {
objects.push(objectsById[id]);
}
// Index all of the roots' descendents
indexItems(objects);
});
@ -185,7 +187,7 @@ define(
worker.onmessage = handleResponse;
// Index the tree's contents once at the beginning
// Index the tree's contents once at the beginning
getItems();
}
@ -266,4 +268,4 @@ define(
return GenericSearchProvider;
}
);
);